CXWAW-2000S Computer Control Electro-hydraulic Servo Steel Bar Tensile Testing Machine
Application
It is mainly used for tensile, bending, compression, shear, peeling, tearing and other tests of various metallic and non-metallic materials. For example, rebar tensile, tensile bending of high-strength bolts and high hardness metal materials, residual deformation of steel disc mechanical connectors, compression of metal and concrete, etc.
Standard
GB/T228.1 Standard for tensile test methods of metals at room temperature
GB/7314 Metal compression test method
GB/T 50081 Standard for test methods of mechanical properties of ordinary concrete
GB/T 16825 Inspection of tensile testing machine
JIS Z2241 Method of tensile test for metallic materials
GB/T 16826 Electro hydraulic servo universal testing machine
JJG 1063 Verification regulation of electro-hydraulic servo universal testing machine
GB/T 6825 Inspection of static uniaxial testing machine
GB/T General technical requirements for testing machine
JJF 1103 Evaluation of computer data acquisition system for universal testing machine
GB/T 22066 Evaluation of computer data acquisition system for static uniaxial testing machine
GB/T 228.1 Metallic materials -- tensile test at room temperature
GB/T 7314 Metallic materials -- room temperature compression test
JGJ 107 Technical specification for mechanical connection of reinforcement
AC 133 Tensile, compression and fatigue tests
Patents
Utility model patent ZL2017 0 1259588.8
Utility model patent ZL2017 2 1257894.8
Utility model patent ZL2016 2 0017574.4
Main characteristics
- The lower oil cylinder and six column frame structure are adopted, with good rigidity and stable structure.
- The sample is automatically clamped by hydraulic chuck.
- High precision load sensor is used for force measurement, with high measurement accuracy and wide range
- High precision displacement sensor is adopted
- It is controlled by servo motor, silent and energy-saving, and the calorific value of the system is small
- High precision extensometer is used to measure the deformation of the sample
- The double nut reverse clearance elimination structure is adopted to solve the problem of increasing the gap of parts caused by long-term running wear of nuts, and ensure the loading rate, which is far higher than the standard of GB228.
- The built-in structural design is adopted, and the jaw and jaw clamping plate are not exposed to the outside of the jaw seat during the test operation, so that the stress in the jaw of the testing machine is relatively balanced, which can effectively avoid the strain of the testing machine on the jaw, jaw and jaw seat during the long-term operation of the testing machine, so as to solve the problem of reverse edge and deformation of the jaw seat of the testing machine.
- Adjust and process the clearance nut, screw nut, sensor nut, base, piston pull rod and left and right pressing plate nuts to make the testing machine more stable and firm.
- The networked measurement and control system is adopted, which has the functions of gain adjustment and zero full degree, so as to ensure the smooth operation and accurate measurement of the machine.
- It can realize constant rate force control, constant rate stress control, constant rate strain control, constant rate stroke control, low cycle fatigue control and user self programming control.
- It can draw a variety of test curves such as force deformation, force displacement, stress-strain and force time.
- Adopts PCI bus control method
- The main components of the hydraulic system are imported parts, such as imported Siemens motor and imported radial piston oil pump, which makes the testing machine have higher loading accuracy, lower noise and better durability, and enhances the stability of the machine.
- The loading is controlled by computer and electro-hydraulic servo system, which is fully automatic. It can independently complete the test according to the preset stress rate and curve form, and display the dynamic display of load, rate, time and test curve. All tests can be completed by setting parameters only once.
- The force measuring cabinet is equipped with the current advanced industrial embedded tablet computer, which can withstand the voltage range of 85-250v and has stronger anti-interference performance. The computer adopts touch screen technology, which can be used for touch operation or keyboard operation. The whole is more in line with ergonomic design, and the operation is more convenient and simple.
- Using Windows system control software, many technical parameters such as elastic modulus E, upper yield strength Reh, lower yield strength Rel, specified non proportional extension strength RR, tensile strength RM, specified total extension strength RT, maximum force total elongation AGT, yield point elongation can be obtained automatically.
- Computer automatic data acquisition and processing and synchronous screen display of test data and test curve are adopted. The test curve can be locally enlarged and the superposition comparison of multiple curves can be carried out. It has the functions of disk storage of test results, printing test results and test curves, report processing and database management of batch test results, and retains network interface. It has the function of LAN networking and seamless connection of remote data.
Main technical parameters
| Model |
CXWAW-2000S |
| Load frame |
Maximum bearing deformation |
Column deformation ≤0.45mm |
| Coaxiality |
<0.03mm |
| Cylinder layout |
Lower type |
| Maximum bearing capacity of oil cylinder (KN) |
3000 |
Cylinder linearity
|
Ellipticity |
≤ 0.015mm |
| verticality |
≤⊥0.03mm |
| Roughness |
≤Ra0.4um |
Oil source
|
Pump |
Flow |
10.59 l/min |
| Pressure |
20.8mpa |
| Transducer |
Sensitivity coefficient |
2mv/v |
| Nonlinear |
0.2%FS |
| Repeatability |
0.05%FS |
| Maximum test force (KN) |
2000 |
| Force measuring range (KN) |
20-2000 |
| Relative error of test force indication |
≤±0.5% (±1%) |
| Force resolution |
1/300000FS |
| Displacement resolution |
1/300000FS |
| Displacement indication error |
≤±0.5% |
| Deformation resolution |
1/300000FS |
| Deformation indication error |
≤±0.5% |
| Equal rate control range of test force |
0.1%~4%FS/s |
| Displacement constant rate control range |
0.5~90mm/min |
| Strain constant rate control range |
0.00007-0.0025/s |
| Speed control accuracy error |
≤±1% of set value |
| Maximum distance between upper and lower pressure plates (mm) |
590~890 |
| Parallelism of upper and lower pressing plates |
≤0.01mm |
| Flatness of pressing plate |
<0.016mm |
| Hardness of pressing plate |
>55HRC |
| Surface roughness of pressing plate |
<0.8μm |
| Maximum distance between stretching jaws (mm) |
700~1000 |
| Effective distance between columns (mm) |
675 |
| Clamping width of flat specimen (mm) |
≤140 |
| Clamping thickness of flat specimen (mm) |
0-40 |
| Clamping diameter of round specimen (mm) |
20-70 |
| Dimensions of upper and lower pressing plates (mm) |
Φ235 |
| Piston stroke (mm) |
250 |
| Lowe cross beam moving speed (mm/min) |
200 |
| Total power (kW) |
4+1.1 |
| Power supply |
AC380V±10% 50HZ |
| Load frame dimension (mm) |
1100×800×2900(3200) |
| Control cabinet dimension (mm) |
620×450×1400 |
| Load frame weight (Kg) |
7000 |
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