CNC laser cutting machine, operating system

Posted on May 17, 2012 by admin

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      In recent years, with the continuous development of the industrial system, CNC laser cutting machine began extensive application of them. Is combined with a variety of thermal cutting technology and CNC technology, CNC laser cutting machine when applied to the processing of industrial equipment operability will be stronger, so all processing staff, rather than professional personnel can easily operate, In addition, the advantages of laser cutting, such as: positioning speed, cutting speed, high cutting efficiency, acceleration large.

      Chutian CNC laser to remind you: In addition to want to keep some of the hot-cutting technology in the process of thermal cutting and CNC technology, also must be CNC automated functional integration, therefore, in the device operation, the CNC operating system should be streamlining of civilians. The rapid development of these years, CNC cutting technology, resulting in more and more enterprises to take into account the exchange processing equipment, but most of the CNC to operate the equipment is too complex to use only professional operators, has greatly increased the labor costs. Therefore, the current CNC laser cutting machine programming needs more consideration to the operator, more close to hearts of the people faster.

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CNC laser cutting machine operating system

Posted on May 17, 2012 by admin

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  In recent years, with the continuous development of the industrial system, CNC laser cutting machine began extensive application of them. Is combined with a variety of thermal cutting technology and CNC technology, CNC laser cutting machine when applied to the processing of industrial equipment operability will be stronger, so all processing staff, rather than professional personnel can easily operate, In addition, the advantages of laser cutting, such as: positioning speed, cutting speed, high cutting efficiency, acceleration large.

      Chutian CNC laser to remind you: In addition to want to keep some of the hot-cutting technology in the process of thermal cutting and CNC technology, also must be CNC automated functional integration, therefore, in the device operation, the CNC operating system should be streamlining of civilians. The rapid development of these years, CNC cutting technology, resulting in more and more enterprises to take into account the exchange processing equipment, but most of the CNC to operate the equipment is too complex to use only professional operators, has greatly increased the labor costs. Therefore, the current CNC laser cutting machine programming needs more consideration to the operator, more close to hearts of the people faster.

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Screw pump technologys to highlight the increasing production and efficiency to boost environmental protection

Posted on May 17, 2012 by admin

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In oil field development at this stage, the screw pump is an advanced mechanical recovery process. In the wells of oil, hydraulic lifting process, with the pumping power, pressure, swabbing the role of strong, stable performance, low shear stress. Applies to both land-based oil well production, and is also suitable for the far from land

Offshore oil demand. Plays an important role of security, security, protection of the environment, increase production, increase efficiency, favored by the mine operator in the oil, gas, mining fluid operation.
Screw pump highlights the increase, efficiency
Xianhe Oil Factory of the victory bold use of the screw pump extracts by mining, and achieved remarkable increase in efficiency gains. Grass ancient one block, one of the Lok oil field on the main production block, with the years of rapid development, strata the end of water wells caused by "violent" flooding have become increasingly prominent, conventional mining methods and re-

Together to block the effect of governance bottom water year to year variation. Extract oil production test by the large displacement screw pump, the control of the water stable oil mining "to" large displacement approach "; oil well production rate by optimizing the technical parameters, and fully tap the bottom water and oil The Tibet potential.
Large displacement screw, long screw pump extracts, with a large displacement, high pressure, low shear stress, to mention the needs of the fluid of large displacement pumping, can be solved effectively pumping oil rod is easily broken off and the depth of the pump control problems, but also to maintain the differential pressure stable, a constant amount of extract for
stainless steel pipe fittings
The dynamic balance of the oil volume to the full well capacity to play an important role.
Screw pump to boost security, security, environmental protection
Shengli Oilfield Linpan oil extraction plant oil production a mine as "emptying the pump will screw pump into production, only a year to recover the floor more than 1,500 tons of oil to restore the economic losses of $ 2.8 million.
In recent years, with the deterioration of the security environment of the oil region, the activities of lawless elements have become increasingly rampant, single well, multiphase pump pipeline punch Stolen phenomenon occurred frequently. Engineering, geological analysis, mainly due to the emptying way defective. Previously encountered illegal sabotage the pipeline,

The small class officers simply crude efflux to emptying the pool, the formation of the floor oil can not be recovered, Yan has been a lawless elements looting, and a larger contamination, is not conducive to the management of the metering station. "Tasted the sweetness of" criminals driven by economic interests, will more frequently Daoge the pipeline. Therefore
pipe fitting suppliers
, In order to chopped this "cancer", it is necessary to change the vent way to start.
This technology to reduce the efflux caused by the loss of crude oil and environmental pollution, accelerated the progress of pipeline maintenance to improve the well rate. Blocked, due to the emptying of change in the way the the lawless Stolen molecules financial resources to effectively reduce the occurrence of acts of sabotage.
Screw pump wells, oil wells, "longevity" in defense of the introduction of the screw pump technology production is the backbone of the victory Chengdao crude oil production. "95", "15" period, the Chengdao sea "Longevity" screw pump wells is increasing year by year.
Due to the screw pump pumping power, good stability, very suitable for offshore oil needs far from land. Since the Ninth Five-Year Plan, the technical staff of the victory of offshore oil development company, combined with Chengdao oilfield underground developments, the production features, reasonable to introduce the advanced technology of screw pump,

Large area. With the growing awareness on the screw pump technology and improved operating techniques, the screw pump technology Chengdao oilfield gradually complete and perfect. Field practices and operations in the past six years, the company s technical staff has improved the implementation of the screw pump hollow rod, double-headedstainless steel tee

Screw pumps, progressive cavity pump variable frequency soft-start technology and other technical measures, to form a more perfect sea screw pump technology system, showing the excellent situation of the sea "Longevity" screw pump wells is increasing year by year. Victory Chengdao oil screw pump wells, "longevity" (exemption from a long period) has become a common

Phenomenon for the oil well production rate gains and output growth has laid a solid foundation, screw pump wells, according to statistics Chengdao oilfield exemptions of more than 2 years (up to 802 days), 36 wells, the exemption of more than three years ( 1098 days), 16 wells, the exemption of more than four years (1466 days), nine wells, the exemption of more than

5 years (1826 days), a well made outstanding achievements, but also for the "10th Five-Year Plan" period, the sustained and stable development of the oil field has provided a reliable guarantee for the jump in crude oil production Shengli Oilfield, offshore oil field.

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The working principles and classification of the relief valve

Posted on May 17, 2012 by admin

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The use of the relief valve
Constant pressure overflow effect: dosing pumps throttle system, the dosing pumps provide a constant flow. When the system pressure increases, make the traffic demand decreases. The relief valve opens, the excess flow to the overflow back to the tank to ensure that the relief valve inlet pressure, the pump outlet pressure constant (valve port, often with the pressure

Fluctuations open).
Security role: the system work properly, the valve closes. Open only when the load exceeds the specified limit (the system pressure exceeds the set pressure) overflow, overload protection system, no further increase in pressure (usually 10% to 20% higher than the maximum working pressure relief valve set pressure

).
For the unloading valve with
For remote pressure regulator
For high and low pressure control valve
For sequence valve
Used to generate backpressure (string back to the oil on the road).
A direct-acting relief valve
1), the cone valve direct acting relief valve
The cone valve direct-acting type relief valve
Icon cone valve direct-acting relief valve. The left end of the poppet valve with bias plate one lift up the the quell spring 5, the right end of the poppet valve has a damping piston (damping piston on the one hand, when the poppet valve open or closed from the damping effect to improve the stability of the poppet valve; on the one hand is used to ensure that the poppet valve opens

Will tilt). Imports of oil pressure (pressure P) which the piston radial clearance to enter the piston at the bottom of the formation of a left hydraulic pressure F = P (A is the bottom of the piston area). F is greater than the spring force when acting on the fluid pressure at the bottom of the cone valve, mouth open, fluid from the mouth of the poppet valve by reflux population overflow

Back to the tank. The valve port open, oil flows through the relief valve, relief valve inlet pressure remained constant. , You can adjust the overflow pressure adjustment lever 4 to change the regulator spring preload Ft.
Poppet valve is open, (5-21)
Where K and X0 spring stiffness and pre-compression (m); weight G for the spool (spool positioned vertically to take into account weight, without regard to the level of placement weight) (N); Ff spool and the valve suite the friction (the direction of the spool in the opposite direction) (N); F5 for the steady-state flow force

Cone due to the damping piston and the poppet valve connections, and the symmetry with the poppet valve in the poppet valve opens into the oil flow and oil flow in steady-state flow force balance each other, so F5 = 0; Fj jet force in bias plate on the end of the poppet valve to open an annular groove, to change the poppet valve to the mouth of the stream flow direction, production

Birth to a jet the opposite direction of the force of the spring force, when the increased flow through the relief valve, although the population increases because the cone valve caused an increase in spring force, but opposite to the direction of the spring force jet force at the same time, the results offset spring force increment.
Taking into account the F5 = 0 and Fj = Kx, then (5-21) becomes
(5-22)stainless steel pipe fittings
We can see by the formula (5-22), this valve inlet pressure P from the impact of changes in flow, that is, P from x the size of the valve opening. Charged with little change of pressure P, at constant pressure and high precision.
2), ball valve straight acting relief valve
The ball valve-type direct-acting relief valve
Icon for the ball valve type, direct acting relief valve. It also has a damping piston 3, but with the poppet valve structure between the piston and ball valve 1 is not a rigid connection, but through the damping spring 4 so that the piston in contact with the ball valve (piston at both ends of the fluid pressure balance). Due to the damping effect of the piston, can always

Smooth ball valve movement connected with the piston.
(Pa) (5-23)
Where A is the ball valve seat hole area (m2); K1, K2, the main spring 2 and damping spring stiffness (N / m); x10, x20, respectively, the main spring and damping spring 4 pre-compression (m); x is the ball valve opening (m). Known by the formula (5-23), due to the increase of the damping spring
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Equivalent to the main spring stiffness of K2, the pre-compression reduces the K2x20/K1 help to improve the static characteristics of the valve.
The pilot-type relief valve
Consists of two parts of the main valve and pilot valve. The pilot valve is similar to the direct-acting relief valve, but more generally for the poppet valve (or ball) shaped seat structure. The main valve can be divided into a concentric structure, two concentric structure and three concentric structure.
Figure 1, the pilot-type relief valve
Figure 1 is a pilot operated relief valve. The main spool valve cover, valve body 4 and the main valve seat 7 three concentric with the requirements, it belongs to the three concentric structure. Pressure oil from the valve body 4 in central inlet P to enter, and to enter the main spool cavity through the orifice of the main spool 6, the oil valve cover on the channel

a and cone seat 2, the hole on the role of the poppet valve 1. When the inlet pressure p1 is less than the setting value for the pilot valve regulator spring, the pilot valve closed, and because the main spool and lower sides of the effective area ratio (A2/A1) of 1.03 to 1.05, the upper side pressure on the larger, the role of the main spool and the main valve

The spring force of the main valve port Bijin does not overflow. When the oil inlet pressure exceeds the set pressure of pilot valve, pilot valve is opened, causing the funds Ports P Well the main spool orifice 5 of the pilot valve port, 4 lower part of the center hole to the body of the main spool (overflow outlet orifice) O flow. Orifice at flow loss so that the main
stainless steel reduce
The spool, the oil generated in the inferior vena an increase with the pilot valve flow increases the pressure difference when the total pressure difference in the main spool, under the effect of the surface to produce enough to overcome the main valve spring force, the main valve weight G and friction Ff, the main spool is turned on. The inlet P outlet (overflow port) O straight

Then the same, resulting in overflow to keep the system pressure.
Chart of Figure 2, two concentric pilot relief valve
Figure 2 is the structure diagram of the two concentric pilot relief valve, the main spool with a cylindrical surface of the poppet valve. A good seal when the main valve to close, the main spool a cylindrical guide surface and the conical surface and the valve sleeve tie the concentricity of the two demanding, it said two concentric. The main spool

Orifice, three orifice 2, 3, 4 are located in the valve body 10 and the pilot valve body 6. The working principle is the same, with three concentric pilot relief valve only oil from the main valve of the inferior vena to the main valve chamber and subject to three orifice. Orifice 2 and 4, the main valve of the inferior vena pilot valve cavity to produce pressure

Is weak and the main valve chamber through the orifice 3 role to control the main spool open. Orifice to increase the stability of the main spool. Pressure of relief valve import and export
(Pa) (5-24)
, Ac, the pilot valve seat hole area (m2); Ky, Kx, respectively, the main valve and pilot valve spring stiffness (N / m); y0, x0, respectively, the main valve and pilot valve pre-compressed volume (m The); y, x, respectively, the main valve and pilot valve port opening (m); Ff-based friction between the valve and the valve body (

N); the G main spool weight (N).

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Optical design of LED systems

Posted on May 17, 2012 by admin

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Optical design of LED systems
    At present, the optical design of LED systems are divided into the scattering and condenser, and a mixture of both in three ways.
◆ Scattering
    LEDs, mostly concentrating lighting. To a large area lighting or display, must pass
By increasing the scatter plate.
    The principle of the scatter plate trapezoidal refractive board or cylindrical refractive board, extended beam angle in one direction, while the illumination uniformity. When used as a signal light, can make the light emitting surface shows uniform. Figure 5.19 (b) is a direction of expansion of the beam angle, but its intensity distribution in Figure 5.19 (a) is not the same.

 

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The inverter dynamics braking application analysis

Posted on May 17, 2012 by admin

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1 Introduction
In recent years, and constantly improve the function of the frequency converter itself, the AC variable speed technology has made substantial progress. Conditions, the full development of the drive itself, effectively reducing the cost of the transformation has become an important issue. Compared with normal control, the use of variable

Frequency of DC braking function to achieve accurate stopping of the AC drive system design eliminates the need for the high value of the inverter braking unit / braking resistor, effectively reducing the cost of equipment modification, reliable, high control precision.
Theoretical analysis of VVVF dynamic brakingStainless steel Pipe Fittings
General purpose inverter brake: dynamic braking, regenerative braking, rectifier feedback. Inverter manufacturers in the moment of inertia of the larger working conditions, the proposed general methodology is the regenerative braking mode of an external braking resistor and brake unit can be used depending, in some cases

DC braking. This design concept is basic for the majority of orders accepted by users, and good results obtained in actual use. But the programs need to purchase additional inverter manufacturers provide a special braking unit / braking resistor, potentially increasing the cost of renovation.
The so-called "DC brake" generally refers to when the inverter output frequency is close to zero, the motor speed is reduced to a certain value, the drive offered to the asynchronous motor stator winding pass into the DC, the formation of the static magnetic field, the electric motor is able to consumption of braking and turning the rotor cutting the stationary

Magnetic field to produce a braking torque to the motor to stop quickly. Motor braking, the inverter output frequency is decreased, the synchronous magnetic field within the stator winding speed is lower than the rotor speed, the motor is in regenerative braking process, the rotation system stored kinetic energy into electrical energy heat loss

Consumption in the form of the induction motor rotor circuit, in order to prevent the energy back in the motor deceleration process in the formation of renewable power generation braking and DC braking process, resulting in damage to the inverter and the motor need to string into a dedicated brake unit / braking resistor.
Mechanical properties of the curve shown in Figure 1 for general AC motor braking. Of point A for the normal working point. Synchronous motor rotating magnetic field speed as follows:
Where the motor synchronous speed, the power frequency for the motor pole number.
Figure 1. Mechanical characteristic curve of the asynchronous motor
The usual motor during braking, the motor deceleration, first synchronous motor rotating magnetic field speed is lower than the rotor speed, the operating point at the same speed under curve ② Skip to curve ① at point A point B, namely the transition from the first quadrant The second quadrant is called the jump of the characteristics of the same speed, the motorStainless steel flange

The opposite direction of the braking torque T to enter the power generation braking drag system along the Figure 1 in the curve ② rapid spin-down, when below a certain speed, the DC input to the stator windings to form a fixed magnetic field, resulting in the braking torque moment. In this process, the motor will brake after the brake and power consumption of renewable power generation most

The final stop.
Analyzed theoretically, if we can control the speed of the synchronous motor magnetic field to slow down the motor jump at the same speed characteristics, the characteristic curve is maintained in the first quadrant, as shown in Figure 1 the dotted line group ③ slow spin-down, do not jump Go to the second quadrant of the drag system can slow down the process

Effectively avoid the occurrence of the regenerative braking process. Shown in Figure 1, when the motor speed in less than the critical speed nh access DC braking, and the corresponding control of the size and time of access to DC, in theory, analysis of the motor experienced only a limited dynamic braking phase, do not overheat. The frequency converter
Stainless steel tee
Internal and external features to ensure the satisfaction of the above conditions.
However, this method has some of the necessary prerequisites, the system can not be frequent start / stop, otherwise it will cause the failure of the inverter DC circuit. Secondly, the conditions of the delegation of hoist, elevators and other heavy objects are not suitable. Again, the system deceleration time can not be too short, ie, spin-down can not be over

Fast, otherwise the working point to the second quadrant of the regenerative braking process, caused by overheating of the motor.
3 Conclusion
The theoretical analysis can be shown that the design ideas is entirely reasonable. In practice, the inverter DC braking with DC braking time, the start frequency and braking Level motor brake effect is more obvious.

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ASTM Standard No Ds

Posted on May 17, 2012 by admin

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D5-06e1 bituminous material permeability test methods
D69-06 friction with the test methods
D93-06 Pan Siji – Martins instrument closed cup flash point tester for the determination of flash point test methods
D97-06 oil pour point test method
D116-86 (2006) Electrical equipment glazed ceramic materials test
D226-06 Shop top and waterproof asphalt saturated organic felt
Test methods D228-06 Asphalt roofing membranes, covers, and tile
D245-06 the development of the visual grading of timber structural level and allow the performance of procedures
D256-06 plastics and electrical insulating materials impact resistance of the test method
Insolubles Test Method D269-97 (2006) rosin and rosin derivatives
D287-92 API Gravity of crude oil and petroleum products (2006) test methods (hydrometer method)
D295-99 (2004) electrical insulation Methods of test for varnished fabrics with cotton
D323-06 petroleum products the vapor pressure test methodStainless steel tee
D358-98 (2006) paint resistant to atmospheric old test the wood chip specifications
D380-94 (2006) rubber hose test methods
Dynamic fatigue test method D430-06 Rubber Deterioration
D445-06 of transparent and opaque liquid kinematic viscosity test methods (including the calculation of dynamic viscosity)
D446-06 glass capillary kinematic viscosity meter Specifications and Operating Instructions
D450-96 (2006) Roofing, moisture-proof and waterproof hard coal asphalt
Test method D471-06 liquid rubber properties
D478-02 (2006) zinc yellow (zinc chromate) pigment
D542-06 transparent organic plastic index of refraction of the test methods
Test method D543-06 plastic resistant to chemical reagents
D596-01 (2006) Water analysis report
Inhibited by D609-00 (2006) test of coatings, paints and modified coatings and related paint products with the preparation of cold-rolled steel
D635-06 self-supporting plastics in the spread of the degree of horizontal burning rate or burning and burning time test methods
D648-06 Test Method of Deflection Temperature of Plastics Under Flexural Load
D664-06a potentiometric titration test method for determination of acid value of petroleum products
D665-06 the presence of water suppression under the mineral oil anti-rust characteristics of test methods
D727-96 (2006) vacuum method of determination of value of the test method of roof and floor linoleum, kerosene
D751-06 test method of the coated fabrics
D763-06 raw umber and roasting brown earth pigments
D788-06 methacrylate molding and extrusion compounds classification system
D789-06a polyamide relative viscosity, melting point and water content of the test method
D806-00 (2006) Soil – Cement Cement Content Test Method
D813-06 Determination of the expansion of rubber cracking test method
D816-06 rubber glue test methods
D822-01 (2006) after filtering the Mingguang carbon arc lamp and water exposure apparatus conductivity test on Paint and Related Coatings and Materials
D843-06 nitration xylene
D854-06 Soil proportion of test methods
D874-06 lubricants and additives Sulfated Ash test methods
Standard Test Method D892-06 foaming characteristics of lubricating
D902-06 for electrical insulation flexible resin coated glass cloth and glass cloth with the test method
D914-00 (2006) Ethyl-fiber test methods
D922-00a (2006) non-rigid PVC pipe
D945-06 for determining the mechanical oscilloscope test methods of compression and shear stresses on Rubber Properties
D946-82 (2005) road construction with the paste of press penetration graded asphalt
Test Method D950-03 Impact Strength of Adhesive
D957-06 plastic production model surface temperature determination
D974-06 Standard Test Method for Determination of pH titration with color indicator
D975 for the-06b diesel technical specifications
D979-01 (2006) e1 Asphalt Paving Mixtures of sampling methods
D1006-01 (2006) wood surface coating of outdoor exposure test
Total sulfur test method D1072-06 fuel gas
D1073-06 Asphalt Pavement mixture of fine aggregate
D1076-06 rubber. Concentrated ammonia storage, milky and centrifuged natural rubber latex
D1079-06 Shop roofing materials, waterproof materials and asphalt materials related terms
D1101-97a (2006) Outdoor glue laminated structural wood products, connector integrity test methods
D1129-06a and water-related terms
Test method D1142-95 dew point temperature method (2006) Determination of the vapor content in the fuel gas
D1151-00 (2006) Moisture and Temperature on Adhesive Test Method
D1152-06 methanol (methyl alcohol)Stainless steel Pipe Fittings
D1153-06 methyl isobutyl ketone
Vacuum distillation method D1160-06 petroleum products
Determination of compacted asphalt mixture volume proportion and density of the test methods D1188-96 (2002) e1 samples coated with paraffin
Reagent Water D1193-06 (Federal Test Method No.7916)
D1223-93 (2006) 75 degrees paper and paperboard of specular gloss of the test method
Zinc and Cadmium Test Method D1224-92 (2006) paper
Anti-extraction test method D1239-98 (2006) Chemicals used for the measurement of plastic film
D1240-02 (2006) Rosin, Tall Oil and related products center storage rosin acid content of the test methods
Test method D1259-06 resin solution of the non-volatile matter content
D1316-06 U.S. ink study will grind meter determination of ink grinding fineness of the test method
D1343-95 (2006) test method for determination of viscosity of cellulose derivatives by falling ball method
Permanganate time test method D1363-06 C copper and methanol
Test methods for Proof-06 thin solid electrical insulating materials in the calibration voltage test
D1415-06 rubber characteristics test methods. International Hardness
D1418-06 Rubber and rubber latex. Named
D1441-06 cotton fiber length and length distribution of test methods (array method)
D1442-06 test sample of cotton fiber
D1461-85 (2006) Asphalt paving mixture moisture or volatile distillate content of the test method
Starch substances test method D1488-00 (2006) adhesive
Non-volatile matter content of the test method D1490-01 (2006) Urea-formaldehyde resin solution
D1509-95 (2000) carbon black test methods. Heat loss
D1510-06a carbon black iodine absorption value of the test method
D1511-00 (2006), carbon black test methods. Flake size distribution
D1517-06 definitions of terms and leather
D1523-00 (2006) Operating Temperature 90 ° C wire and cable with synthetic rubber insulation materials
D1525-06 the plastic vicat (Vicat More Instruments Pre) softening temperature of the test method
D1535-06 test method using the Munsell system provides color
D1566-06b and rubber-related terms
D1578-93 (2006) e1 yarn in hank form of the breaking strength test methods
Rosin, tall oil and related products, fatty acid content of the test method D1585-96 (2006) central warehouse
Test method D1613-06 Paints, varnish, paint and related products with volatile solvents and chemical medium acidity
D1630-06 Rubber Property test abrasion resistance (NBS abrasion machine)
Determination of compressive strength of cement-soil test method (Modified Cube Method) D1634-00 (2006) beam bending fracture of
Determination of cement soil flexural strength test method D1635-00 (2006) Using Simple Beam with point load method
D1649-01 (2006) Strontium pigments
D1655-06a aviation turbine fuel
D1668-97a (2006) Roofing and waterproofing glass fabrics (woven and treated)
D1696-95 (2006) cellulose in sodium hydroxide solubility of the test method
D1708-06a test methods of the miniature tensile specimens of plastic tensile properties
The test method D1742-06 storage process Petroleum separation from lubricating greaseStainless steel flange
D1758-06 with stakes field trial assessment of wood preservatives
D1761-06 wooden structure with a test method of mechanical fasteners
D1765-06e1 rubber products, carbon black of the classification system
D1770-94 (2006) e1 wool hair knot, plant material and colored fiber content of the test method
D1784-06 rigid PVC compounds and chlorinated polyvinyl chloride compounds
D1785-06 PVC pipe .40,80 and 120 table
D1786-01 (2006) e1 toluene diisocyanate
D1792-06 emulsion floor polishes long-term decontamination of the test method
D1822-06 test method for tensile impact energy of fracture of plastics and electrical insulating materials
D1838-06 liquefied petroleum gas on the copper corrosion test methods
D1879-06 adhesive samples exposed to high-energy radiation
D1894-06 plastic film and sheet of static and dynamic friction

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ASTM Standards No E

Posted on May 17, 2012 by admin

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The relevant terms of the E6-06 Mechanical test methods
E23-06 metal material notched bar impact test method
E29-06 test data figures to determine the adaptability of the specification
The E74-06 test test machine force show the values ​​with the calibration of the dynamometer
E83-06 extensometer testing and classification
E84-06 Building Materials Surface Burning Characteristics of test methods
Manufacture and testing of ultrasonic standard E127-06 aluminum alloy block
E135-06 metals, ores and related materials, analysis of chemical terminology
E136-04 method of material properties in vertical tube furnace at 750 ° C test
E139-06 metal materials Creep, creep rupture and stress rupture test
E168-06 infrared quantitative analysis of the general technical
E176-06 fire safety standard of terminology
E177-06 ASTM Test Method precision and bias in the use of the term
E194-06 copper and iron powder is not soluble in acid material content of the test method
E196-06 roof Peace roof gravity load test
E208-06 test method for the whereabouts of gravity test for the determination of the ferritic steels Neil ductility transition temperature
E228-06 Test Method Determination of linear thermal expansion of solid materials with transparent quartz dilatometer
E235-06 nuclear equipment or other high reliability equipment with guard K-type thermocouple
E252-06 test method for determination of thin foil and film thickness by weighing method
E253-06 materials and products related terms for sensory evaluation
E259-06 hemispherical geometry to suppress the powder white reflection coefficients convert the standard preparation of
E260-96 (2006) packed tower gas chromatography
E274-06 with full-scale tire determination of pavement skid resistance test methods
E284-06a appearance of the term
E288-06 flask
E295-82 (2006) Test methods for measuring the oil diffusion pump speed
E309-95 (2006), magnetic saturation, eddy current testing of tubular steel products
E312-06 Photographing a description of the conditions and selectStainless steel flange
E317-06 without electronic measuring instrument, the ultrasonic pulse-echo test system operation performance assessment therefore
E329-06a construction materials testing and / or inspection bodies
E344-06 temperature and liquid specific gravity measurement, the terms
The relevant terms of the E349-06 space simulator
E351-93 (2006) cast iron chemical analysis methods of various models
E352-93 (2006), tool steel and other similar in alloy steel and high alloy steel for chemical analysis of test methods
E353-93 (2006) stainless steel, refractory steel, martensitic steel, and other similar Inconel of the chemical analysis of test methods
E354-93 (2006) high-temperature steel, electric steel, magnets, and other similar alloys of iron, nickel and cobalt chemical analytical test methods
E372-01 (2006) Mg-Fe-Si alloy chemical analysis of test methods
E381-01 (2006) by the bars, billets, billets and forgings composed of steel products, macro-etch test, inspection and evaluation
E384-06 material microhardness test methods
E390-01 (2006) e1 steel welding connection with Reference Radiographs
E444-06 trial documents involved in the law areas of work instructions
E456-06 statistical term and related terms
E473-06a and thermal analysis of the definition of the term
E477-06a Duct Liner Materials and Prefabricated Silencers materials, audio and airflow characteristics of test methods
E479-91 (2006) Leak test specifications preparation
E490-00a (2006) the solar constant and Zero Air Mass Solar Spectral Irradiance Tables
E493-06 in the inside and outside the test method using the mass spectrometer leak detector for leak test test
E502-06a closed cup method to determine the chemical flash point test methods
Test Method E517-00 (2006) sheet metal, plastic strain ratio γ
E543-06 implementation of the non-destructive testing of the rating agencies
E556-95 (2006) Using a Calibration Platform (User Level) Calibrating a Wheel Force or torque sensing instrument test methods
E557-00 (2006), partitions in the construction and installationStainless steel tee
E564-06 building framework wall shear static load test
E572-02a (2006) stainless steel X-ray emission spectroscopy determination of the analysis of test methods
E574-06 double base metal thermocouple wire insulated with glass fiber or silica fibers
E575-05 report from the procedures of housing construction, components, connections and components test data obtained
E580/E580M-06 install sound-absorbing paneling Ceiling Suspension Systems for applications in the areas in need of shock
E594-96 (2006) by gas chromatography using flame ionization detector test
E603-06e1 laboratory fire test guide
E605-93 (2006) sprayed onto the structure of refractory thickness and density of test methods
E631-06 housing constructed term
E644-06 industrial resistance thermometer test methods
E648-06a using the radiant heat energy on the floor coated with the critical radiant flux test methods
E662-06 by the solid materials produced by the smoke than the optical density of test methods
E682-92 (2006) Liquid Chromatography Terms and the relationship between
E688-94 (2006) test methods as the manufacture of glass containers of raw materials, waste glass
E697-96 (2006) by gas chromatography electron capture detector in use
E708-79 (2006) used for the manufacture of glass raw materials, waste glass
E725-96 (2006) granular carrier and granular pesticide sampling test methods
Test Method E726-01 (2006), granular carrier and granular pesticide particle size distribution
E736-00 (2006) structural components, spray fireproofing material for Cohesion / Adhesion Test Method
E741-00 (2006) Test methods for determination of air changes within a single region using tracer gas dilution method
E754-80 (2006) buried in the crevices of the brick lime rod and anchor pull out pull resistance test methods
Sheathed thermocouple materials, insulation resistance test method E780-06 measurements at room temperature
E793-06 differential scanning calorimetry melting and heat of crystallization trials
E794-06 with the test methods of thermal analysis of melting and crystallization temperature
E800-06 preset or fire in the formation of gas measurement
E805-06 material, color and color measurement instrument to recognize the
Test method E814-06 permeable fireproof material combustion test
E831-06 test methods of thermal analysis of test solid core material linear thermal expansion
E833-06 construction in economic terms
E848-94 (2006) procedures related to exposure to occupational safety and health requirements in the water-insoluble chromate
Air spray fireproofing material corrosion test methods E859-93 (2006) on the structural components
E860-97 (2006), inspection and testing of the project or may be included in product liability litigation
E884-82 (2006) of municipal solid waste processing equipment on the sampling of airborne microorganisms
Standard Test Method E906-06 materials and products, heat and visible smoke release rate (speed)
E935-00 (2006) Building of Permanent Metal Railing Systems and the characteristics of test methods
E939-94 (2006) compound drop method to get rid of the test method for field trials of medically important harmful arthropods (including insects, ticks and mites). I mosquito
E951-94 (2006) applied to non-commercial mosquito repellent formulations on the skin testing of laboratory test methods
E964-06 building and building system benefits and costs, and estimates of savings and investment ratios
E965-96 (2006) measured sand volume measurement test methods of pavement macro-structure depth
E974-00 (2006) geothermal system thermal performance to determine
E984-06 in the determination of chemical effects and matrix effects in the Auger electron spectroscopy method
E985-00 (2006) Buildings with a permanent metal fencing and fence
The classification determination by the buffer level (IIC) E989-06 crash
E991-06 fluorescent sample color measurement
E1009-95 (2006) analysis of the assessment of the carbon and low alloy Optical Emission Vacuum SpectrometerStainless steel Pipe Fittings
E1020-96 (2006) incidents have been reported
E1032-06 weld X-ray radiography inspection
The E1050-98 (2006) Tube, Two Microphones and digital frequency analysis system using the impedance of the sound propagation in materials and absorption of the test methods
E1057-06 building and construction investment, internal rate of return and adjust the internal rate of return is estimated
E1059-91 (2006) non-graphite counter electrode shape and size of the label
E1074-06 estimated net income for investment in buildings and building systems
E1083-00 (2006) heated red pepper sensory evaluation test method
E1112-00 (2006) body temperature regularly checked using the electronic thermometer
E1117-97 (2006) of fuel ethanol manufacturing equipment design
E1142-06 terms related to the thermodynamic properties of
E1151-93 (2006) by ion chromatography terms and related terms
E1162-06 Secondary Ion Mass Spectroscopy (SIMS) reported in the sputtering depth cross-sectional data
E1174-06 evaluation of health care workers wash their hands mode test method
Monitor the use of the E1214-06 reactor core pressure vessel monitoring fuse temperature
E1216-06 extraction with tape sampling of surface particulate contamination
E1221-06 Determination of the Kla ferritic steel plane strain fracture suppression, the fracture toughness test methods
E1231-01 (2006) thermally unstable materials hazard potential sensitive value calculation
E1233-06 using the static pressure of the loop by measuring the difference of Exterior Windows, Curtain Walls and gate structural performance test methods
E1285-06 λ (lambda) phage phenomena or the recognition of its DNA
E1295-01 (2006) textured Daphnia (Dubia) three eggs, recovery of toxicity tests
E1298-06 biological drugs in the determination of purity, dirt and impurities <

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Chinas industrys standard

Posted on May 17, 2012 by admin

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clamp ferrule – China Manufacturer
Thank you for inquiry my clamp ferrule, TEL：+86-577-86900108, E-MAIL：sales@wzlongze.com
http://www.sanitarypipe-fittings.com/clamp-ferrule.htm

GB2312> GB / T 6419-1986 diving welder qualification test rules
GB / T 10201-1988 heat treatment and reasonable electric conductivity
GB / T 11056-1989 forging production and energy consumption standards for
GB / T 11057-1989 centrifugal type, mixed flow and axial pumps operation and management
GB / T 3-1997 common thread ending, from the shoulder, undercuts and chamfering
GB / T 131-1993 mechanical drawing surface roughness symbols and methods of
GB / T 157-2001 Product Geometrical product specifications (GPS) conical tapers and taper angle seriessanitary pipe fittings
GB / T 192-1981 common thread tooth – GB / T 193-1981 common thread diameter and pitch series (diameter 600 mm)
GB / T 197-1981 basic thread size (diameter 600 mm)
GB / T 197-1981 common thread tolerance and cooperation (diameter 355 mm)
GB / T 324-1988 weld symbol notation
GB / T 1031-1995 surface roughness parameters and their values
GB / T 1167-1996 transition with the thread
GB / T 1181-1998 fit thread
GB / T 1182-1996 shape and position tolerances – Generalities, definitions, symbols and drawings notation
GB / T 1184-1996 shape and position tolerances without individual tolerance indications
GB / T 1414-1978 piping screwed into the side with the common thread size series
GB / T 1415-1992 metric taper thread
GB / T 1570-1990 conical shaft
GB / T 1800.1-1997 Limits and fits the basis of Part 1: Vocabulary
The basic provisions of the basis of GB / T 1800.2-1998 Limits and fits – Part 2: Tolerances, deviations and fits
GB / T 17450-1998 Limits and fits the basis of Part 3: standard tolerances and fundamental deviations numerical tables
GB / T 1800.4-1999 limits and with standard tolerance grades and hole, the axis limits of deviation for
GB / T 1801-1999 limits and tolerances with and cooperate with the choice of
GB / T 1804-1992 tolerances and fits size to 18 mm hole and shaft tolerance zone
GB / T 1804-2000 General tolerances Tolerances for linear and angular dimensions of tolerance
GB / T 1958-1980 shape and location tolerance testing requirements
GB / T 2298-1991 Mechanical vibration and shock term
GB / T 2358-1994 metal material crack tip opening displacement test methodstainless steel clamps
GB / T 2516-1981 common thread deviation table (diameter ~ 355mm)
GB / T 3177-1997 smooth workpiece size test of GB / T 3323-1987 steel fusion welded butt joints radiographic inspection and classification of
Terminology, definitions and parameters of the surface structure of the GB / T 3505-2000 Product Geometrical surface structure contour method
GB / T 4096-2001 Geometrical product specifications (GPS) prism angle and gradient series
GB / T 4133-1984 Morse tapers drive type and size
GB / T 4249-1996 of tolerance principle
GB / T 4380-1984 to determine the roundness error two and three-point method
GB / T 4457.4-2002 Mechanical drawings – Chart GB / T 4457.5-1984 Mechanical Drawing section symbols
GB / T 4458.1-2002 Mechanical drawings – view
GB / T 4458.2-1984 Mechanical Drawing references and its arrangement of parts and components in the assembly drawing
GB / T 4458.3-1984 Mechanical Drawing Axonometric GB / T 4458.4-1984 Mechanical Drawing Dimensioning method
GB / T 4458.5-1984 Mechanical Drawing dimensional tolerances with the injection method
GB / T 4458.6-2002 Mechanical drawings – cutaway view and cross section diagrams
GB / T 4459.1-1995 mechanical drawing screw threads and threaded notation
GB / T – Conventional representation of mechanical drawing of gears
GB / T 4459.3-2000 Mechanical Drawing spline representation
GB / T – Conventional mechanical drawing spring painting
GB / T 4459.5-1999 Mechanical Drawing Center hole notation
GB / T 4459.6-1996 Mechanical drawings – seals, said method GB / T 4459.7-1998 Mechanical Drawing Rolling notation
GB / T 4460-1984 mechanical mapping agency movement diagram symbols
Simplified representation of GB / T 4656.1-2000 Technical Drawing bar, profiles its section
GB / T 4974-1989 compressors, drilling machines and pneumatic tools – Preferred pressures
GB / T 5371-1985 tolerances and with the interference fit calculation and selection
GB / T 5796.1-1986 trapezoidal screw threads
GB / T 5796.2-1986 trapezoidal thread diameter and pitch GB / T 5796.3-1986 trapezoidal thread of basic dimensions
Of GB / T 5796.4-1986 trapezoidal thread tolerance GB / T 5847-1986 dimension chain calculation method
GB / T 5898-1986 drilling machines and pneumatic tools noise measurement method works
GB / T 6075.1-1999 Measurement and evaluation of non-rotating parts of machine vibration – Part 1: General
GB / T 6075.2-2002 in the non-rotating parts, measurement and evaluation of machine vibration – Part 2: Large land 50MW above Turbine
GB / T
6075.3-2001 in the non-rotating parts, measurement and evaluation of machine vibration, Part 3: The rated power is greater than 15kW and nominal speeds between 120r/min to 15000r/min measured in the field of industrial machinery
GB / T 6075.4-2001 in the non-rotating parts, measurement and evaluation of machine vibration – Part 4: does not include the aircraft class gas turbine drive
GB / T 6075.5-2002 Measurement and evaluation of non-rotating parts of machine vibration – Part 5: hydroelectric generating and pumping plants
GB / T 6075.6-2002 in the non-rotating parts, measurement and evaluation of machine vibration, Part 6: power greater than 100kW reciprocating machines
GB / T 6404-1986 gear noise sound power level measurement
GB / T 6444-1995 Mechanical vibration – Balancing terminology GB / T 6557-1999 balance of the flexible rotor mechanical methods and guidelines
GB / T 6567.1-1986 piping system the basic principles of graphic symbols
Of GB / T 6567.2-1986 piping system for graphical symbols pipelineclamp ferrule
GB / T 6567.3-1986 piping system of graphic symbols pipe
GB / T 6567.4-1986 piping systems – Graphical symbols for valves and control components
GB / T 6567.5-1986 piping system of graphic symbols piping, fittings and valves, and other graphic symbols axis side of the drawing method
GB / T 7220-1987 Surface roughness – Terminology parameter measurements
Description and evaluation of GB / T 7221-1987 Field balancing equipment
GB / T 7234-1987 roundness measurement terms, definitions and parameters of GB / T 7235-1987 roundness error radius measurement
GB / T 7306.1-200055 ° sealing pipe threads – Part 1: Parallel internal thread and taper external thread
GB / T 7306.2-200055 ° sealing pipe threads – Part 2: tapered thread and taper external thread
GB / T 7307-200155 ° non-sealing pipe thread GB / T 7559-1987 fiber reinforced plastic laminates bolted joints strength test method
GB / T 7704-1987X-ray stress determination method
GB / T 8069-1998 Functional gauge
GB / T 8540-1987 of vibration and shock isolators to determine the feature requires guidelines
Determination of GB / T 8543-1987 acceptance test the mechanical vibration of gear
GB / T 9145-1988 commodity medium precision fasteners common thread limits of size
Rough level of accuracy of the GB / T 9146-1988 commodity fasteners common thread limits of size
GB / T 9443-1988 cast steel penetrant testing and shows the rating methods of the track marks
GB / T 9444-1988 cast steel magnetic particle inspection and quality rating methodology
GB / T 9445-1999 non-destructive testing – Qualification and certification GB / T 10084-1988 vibration, impact data analysis and representation
GB / T 10609.1-1989 Technical drawing the title bar
GB / T 10609.2-1989 technical drawing Parts List
Folding method of GB / T 10609.3-1989 Technical drawings of GB / T 10609.4-1989 technical drawings on microfilm copy of the original
GB / T 10610-1998 Product Geometrical product specifications surface structure contour method rules and methods for assessment of surface texture
GB / T 10853-1989 machine theory and institutions of academic language
GB / T 11334-1989 cone tolerances
GB / T 11336-1989 straightness error detection
GB / T 11337-1989 flatness error detection
GB / T 11348.1-1999 Mechanical shaft radial vibration measurement and assessment Part 1: General
GB / T 11348.2-1997 rotating mechanical shaft radial vibration measurement and assessment Part 2: Large land turbogenerator
GB / T 11348.3-1999 rotating mechanical shaft radial vibration measurement and evaluation – Part 3: Coupled industrial machines
GB / T 11348.4-1999 rotating mechanical shaft radial vibration measurement and assessment – Part 4: Gas turbine sets
GB / T 11348.5-2002 rotating mechanical shaft radial vibration measurement and evaluation – Part 5: hydroelectric generating and pumping plants
GB / T mobility – mechanical admittance test to determine the basic definitions and sensor
GB / T 11349.2-1989 mechanical admittance testing to determine the exciter for a single excitation measurement
GB / T 11349.3-1992 mechanical admittance testing to determine the impact excitation
GB / T 11852-1989 cone gauge tolerances and technical conditions
GB / T 12212-1990 Technical drawing welding symbols size, scale and simplify the notation
GB / T 12213-1990 Technical drawings for glassware notation
GB / T 12359-1990 trapezoidal screw thread limits of size
GB / T 12360-1990 cone with the
GB / T 12471-1990 wooden tolerance and fit
GB / T 12472-1990 wooden surface roughness parameters and their values
GB / T 12604.7-1995 to NDT term leak detection
GB / T 12604.8-1995 Terminology for Nondestructive Testing neutron detection
GB / T 12604.9-1996 Terminology for nondestructive testing infrared detection
GB / T 12716-200260 ° sealing pipe thread
GB / T 13319-1991 shape and position tolerance Position Tolerance
GB / T 13321-1991 steel hardness the rasp inspection method
The basic criteria of GB / T 13325-1991 machinery and equipment radiation noise operator position noise measurements (engineering grade)
GB / T 13361-1992 Technical drawings in general terms
GB / T 13362.1-1992 mechanical drawing using the computer information exchange commonly used the long fangsongti generation (symbol) of the basic set
GB / T 13362.2-1992 mechanical drawing to exchange common long fangsongti, computer information generation (operator) 16 × 16 dot matrix font set
GB / T 13362.3-1992 mechanical drawing to exchange common long fangsongti, computer information on behalf of (character) No. 16 x 16 dot matrix font data set
GB / T 13362.4-1992 mechanical drawing computer information exchange common long FangSong vector font generation (the character)
GB / T 13362.5-1992 mechanical drawing with computer information exchange common long FangSong vector font generation (character) data sets
GB / T 13362.6-1993 mechanical drawing to exchange common long fangsongti, computer information on behalf of (character), No. 24 × 24 dot matrix font set
GB / T 13362.7-1993 mechanical drawing to exchange common long fangsongti, computer information on behalf of (character) No. 24 x 24 dot matrix font data set
GB / T 13576.1-1992 serrated (3 °, 30 °) screw threads
GB / T 13576.2-1992 serrated (3 °, 30 °) thread diameter and pitch series
GB / T 13576.3-1992 serrated (3 °, 30 °) thread size
GB / T 13576.4-1992 serrated (3 °, 30 °) thread tolerances
GB / T 13823.10-1995 vibration and shock sensor calibration method Secondary shock calibration
GB / T 13921-1992 fixed structures, especially the occupants of the building and marine structures guide the evaluation of the response of horizontal movement of the low-frequency (0.063 to 1Hz)
Mechanical products of GB / T 14091-1993 Classification of environmental parameters and their severities of grading
GB / T 14124-1993 Mechanical vibration and shock measurement and evaluation of vibration effects on buildings and the use of guidelines
GB / T 14125-1993 vibration measurement of the influence and impact on indoor vibration sensitive equipment and data reporting methods
GB / T 14495-1993 mechanical vibration and shock accelerometer mechanical installation
GB / T 14495-1993 wooden surface roughness comparison specimens
GB / T 14665-1998 mechanical engineering CAD drawing rules
GB / T 14689-1993 technical drawing drawing format and format
GB / T 14690-1993 proportion of technical drawings
GB / T 14691-1993 technical drawing font
GB / T 14692-1993 cartographic projection method
GB / T 14791-1993 thread terminology
GB / T 15054.1-1994 small screw threads
GB / T 15054.2-1994 small thread diameter and pitch series
GB / T 15054.3-1994 small basic thread size
GB / T 15054.4-1994 small thread tolerance
GB / T 15054.5-1994 thread limits of size
GB / T 15621-1995 mechanical products environmental technical requirements for mine environment
GB / T 15751-1995 technical product documentation

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Compression fittings

Posted on May 17, 2012 by admin

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sanitary pump – China Manufacturer
Thank you for inquiry my sanitary pump, TEL：+86-577-86900108, E-MAIL：sales@wzlongze.com
http://www.sanitarypipe-fittings.com/sanitary-pump.htm

Since 1959 compression fittings are used, the people of the world s developed areas and developing countries gradually began to abandon the traditional pipe connection, accept such a reliable, efficient and economic connection.
In the 1970s, people are still accustomed to the threaded pipe fittings, welded pipe connections. Threaded pipe installation up fee reactive and time-consuming and the leakage rate, welded pipe pollution of the environment, pollution, water pipe, but before the new pipe is not large-scale use (although the new pipe

Has been proven to be effective), the use of the new pipe is cautious, after all, pipe fittings, the use of concealed works, chosen the wrong material hidden project will become hidden works.
1980s, solid compression fittings connector and quick to install, no water leakage occurs, reasonable prices and other advantages have been recognized by the people. Combined with the choice of stainless steel, it was found that the choice of compression fittings + stainless steel "is an effective way to solve the hidden project hidden.

Pipes and pipe fittings, and buildings, etc. Life is no longer a dream, the architects can be economic, health, environmental protection, quick installation, sturdy, no project hidden features considered together, without the need for these many factors to make painful trade-offs. Since then, the stainless steel compression fittings in Europe
clamp ferrule
North America, Asia, the Middle East and other regions has been the use of large-scale pipe specifications from DN15 to DN100.
To sum up, stainless steel compression fittings has the following characteristics:
First, it is a maintenance-free, free to update the economic pipe. In water use, it can be the life of the building, etc. and do not need to update and maintain. Typically, the first concern in the selection and use of pipes, pipe fittings, the initial investment costs, with little future maintenance costs

Considered and renovation costs. In fact, many economist estimates over the lifetime of the building, maintenance and update costs is an expensive investment: general building water mains replacement cost is 10 times more than the first pipe investment, service update of the buildings (such as hotels, restaurants)

The cost of pipes for the first time investment of more than 20 times. In this sense, maintenance-free, free update is actually greater savings; terms of life cycle, Stainless steel press fittings in all the fittings, the comprehensive cost is the lowest.
Second, it is a sophisticated design and simple pipe. Simply squeeze the fittings and pipes, you can make the pullout resistance greater than 1000 Newton; hexagonal cross-section makes the pipes and pipe parts can not rotate; contraction of the mouth of the pipe R, and both play a role in sealing ( leakage rate is zero), but also effective anti-
sanitary pipe fittings
Only the aging of the seals. A combination of modern and advanced rubber seal, making the effective life of the rubber seals in more than 100 years (70 degrees Celsius water temperature conditions). This confirms the great thinkers on the design of the evaluation: exquisite designs are often simple, simple is often good.
Third, it is a quick installation, pipe fittings to adapt to the harsh environment. Site does not require threading, welding, installation time is only a quarter of the galvanized pipe; whether it is in the narrow space of the pipe fittings well, are very flexible or seepage trench, compression fittings to connect , the moment can be completed

.
Fourth, it is a healthy and environmentally friendly fittings. Pipe fittings and water pipes will not produce "green water", "red water", "hidden water", the health performance of European drinking water standards, materials can be 100 percent recycled.stainless steel clamps
Fifth, it is a light and beautiful fittings. Third of the overall weight of less than galvanized pipe, smooth surface, never change; connector is compact, a change in the traditional pipe rust, easy to change, bloated size, the image of a "big brain".
Of course, the advanced nature of many, such as: the inner wall of smooth smooth through the water performance; a flexible binding site, excellent seismic performance.

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