Main Functions and Features

       1. This testing machine uses a microcomputer-controlled high-precision electro-hydraulic servo valve to drive a precision hydraulic cylinder, enabling automatic control in multiple modes such as constant rate of test force, constant rate of displacement, and constant rate of deformation. It can perform tensile, compression, flexural and bending tests on specimens, meeting the requirements of the national standard GB/T228-2021 Metallic Materials - Tensile Testing at Ambient Temperature. Additional fixtures can be added to meet the testing requirements of various other materials.

2. The main machine of the testing machine adopts a lower-mounted hydraulic cylinder design: The hydraulic cylinder is located at the lower part of the testing machine. The piston moves upward under hydraulic pressure, enabling compression, bending, and shear tests on specimens. The upper and lower jaw seats feature a fully open structure, making specimen clamping convenient and ensuring good stability. This structural design is reasonable, simple, stable, reliable, and easy to maintain. The hydraulic servo loading system ensures high precision, high efficiency, low noise, and fast response of the system, enabling automatic control loading and direction changing during the test.

Microcomputer Control and Processing System:
a: Electro-hydraulic servo control system: Accurately completes the setting of test parameters during the test process, automatic control of the test process, data acquisition, processing, analysis, storage, and display (test data includes: upper and lower yield points, tensile strength, breaking strength, elastic modulus, elongation at various points, non-proportional elongation, etc.). In addition to the basic closed-loop control functions of test force, specimen deformation, piston displacement, and test process, as well as control functions such as constant stress rate, constant strain rate, constant test force rate, constant displacement rate, test force holding, and displacement holding, it also has a convenient and fast open-loop control function.
b: Screen display functions for test force, peak value, specimen deformation, piston displacement, and test curves. Full keyboard input operation and an intelligent control mode setting expert system enable arbitrary setting of control modes and smooth switching between various control methods, maximizing the flexibility of the system. Loading and unloading are smooth. During the test, program control can be performed, and at the same time, there are "shortcut keys" for fixed programs. The test speed can also be flexibly adjusted using the mouse.

c: It can automatically collect and process test data in accordance with the requirements of national standards such as GB228-2021 Metallic Materials - Tensile Testing at Ambient Temperature. (The data panel is equipped with various test methods and standards, enabling experiments on a variety of materials.) The test process can be simulated and reproduced, and the test data can be re-analyzed. Test curves can be enlarged, compared, and traversed. The test curves allow for arbitrary selection of coordinate axes and can be freely enlarged or reduced.

d: The test software based on the Windows operating system. The zero adjustment of the amplifier and sensor calibration adopt a combination of reliable hardware support and software support to achieve better quality; it can implement permission-based management for users, with multiple graphic display windows and unit conversion functions.

e: Test data is managed in a database format, enabling network database communication and management.

f: The testing machine has expansion and update capabilities.

1. Protection Functions:
a) Cylinder limit protection;
b) Hydraulic system overload overflow protection;
c) Test force overload protection;
d) Overcurrent and overvoltage protection;
e) Safety protection when the specimen breaks;
Automatic protection at the end of the test.

Main Technical Indicators

1. Maximum test force: 1000kN

2. Test force measurement range and accuracy: 0-1000kN
Test force accuracy: better than ±1%

3. Deformation measurement range and accuracy: 1

4. Displacement measurement range and accuracy: 250mm; better than 0.01mm

5. Maximum distance between tensile jaws (including piston stroke): 650mm (heightened version can be customized)

6. Maximum distance between upper and lower pressure plates: 600mm

7. Clamping diameter for round specimens: Ф13-φ40mm

8. Clamping width and thickness for flat specimens: 70mm; 0-30mm

9. Size of upper and lower pressure plates: 203*203mm

10. Distance between bending test supports: 10-500mm

11. Maximum piston stroke: 250mm

12. Stress rate range: 1MPa/s-25MPa/s

13. Strain rate range: 0.00025/s-0.0025/s

14. Tensile speed: 0.5-50mm/min

15. Test space adjustment speed: 120mm/min

16. Main machine dimensions (length × width × height, including piston stroke, mm): 900×620×2300mm (net size)

17. Console dimensions (length × width × height, mm): 1110×650×870mm

18. Total power: 3.0kW

19. Technical parameters of the control part:
〈1〉Test force measurement and display part:
(1) Measurement method: High-precision oil pressure sensor is used to measure test force
(2) Range conversion mode: Automatic switching
(3) Test force display mode: Microcomputer screen display
〈2〉Deformation measurement and display part:
(1) Measurement method: High-precision extensometer is used to measure specimen deformation
(2) Range conversion mode: Automatic switching
(3) Deformation display mode: Microcomputer screen
〈3〉Displacement measurement and display part:
(1) Measurement method: High-precision photoelectric encoder is used to measure piston displacement
(2) Displacement display mode: Microcomputer screen
〈4〉Automatic control part:
(1) Control mode: Microcomputer automatic control
(2) Automatic control valve: High-precision high-frequency electro-hydraulic servo valve
(3) Control modes:
a. Constant rate piston stroke control:
Constant speed setting range: 0.5-70mm/min
Control range: Piston zero point - maximum piston stroke point
b. Constant rate test force control:
Speed setting range: 0.1-2.0 full range/min
Control range: 5-100% of full range
c. Constant rate strain control:
Speed setting range: 0.1-50%/min
Control range: 5-100% of full elongation range
Full elongation range: 0.1-100mm
d. Automatic tensile test control for metal materials:
Stress rate control: 1-50MPa/sec
Constant rate piston stroke control: 0.5-50mm/min
With automatic stop function when specimen breaks
(4) Test condition setting mode: Man-machine dialogue: Microcomputer input type
(5) Test condition setting items:
Specimen cross-sectional area, control speed, holding point, holding time, etc.

Basic Configuration of the Testing

1. Lower-mounted testing machine main unit (1000kN) - 1 set

2. Integrated operation console - 1 set

3. Hydraulic specimen clamping system (inside the console) - 1 set
Main components:
3.1 Hydraulic pump unit - 1 set
3.2 Solenoid directional valve - 1 set
3.3 Stacked relief valve - 1 set

4. Hydraulic servo loading system - 1 set

5. High-precision oil pressure sensor - 1 set

6. Deformation measuring extensometer (50/10) - 1 piece

7. Displacement measuring device - 1 set

8. Fixtures:
8.1 Tensile fixtures (round jaws: Ф13-φ26mm; φ26-φ40mm; flat jaws: 0-15mm) - 1 set each
8.2 Compression fixture  - 1 set
8.3 Bending fixture - 1 set

9. Microcomputer (desktop with LCD screen) - 1 set

10. A4 inkjet printer - 1 set

11. Testing machine software (Windows Chinese version) - 1 copy

Quality Assurance

The three guarantees period for the equipment is one year from the date of formal delivery. Within the three guarantees period, the supplier shall provide timely and free maintenance services for any faults of the equipment, and promptly and freely replace any parts damaged due to non-human causes. If the equipment breaks down during use after the warranty period, the supplier shall arrive at the purchaser's place in a timely manner to provide services and actively assist the purchaser in completing the maintenance tasks.