Ⅰ、Main Functions:

This machine is specifically designed for the relaxation testing of materials such as steel strands, galvanized steel wires, and notched steel wires. The mainframe adopts a horizontal structure with an adjustable working space through a screw rod. The transmission system is housed inside the base, ensuring high rigidity and accuracy of the test results.

The PC-based control system supports closed-loop control modes, such as constant test force and constant displacement, along with program control during testing. These control modes can seamlessly switch without impact. The computer can calculate 1,000-hour test results from data obtained within 100 or 200 hours, or perform continuous 1,000-hour tests. Real-time displays of test force and test curves, as well as storage and printing of test results, curves, and reports, are supported. The machine complies with GB/T 10120-2013 and GB/T 5224-2014 testing standards.

Ⅱ、 Main Features:

1.Specialized Sensors: Sensors are specifically designed for relaxation tests, offering minimal zero-point drift under long-term loading and strong resistance to relaxation and creep.

2.Control Modes: Supports closed-loop controls, including constant test force and constant displacement.

3.High Precision Transmission: Utilizes a servo motor with a specialized gearbox, ensuring high transmission precision and efficiency.

4.Power Outage Protection: Test data is retained during power outages, allowing the test to continue once power is restored.

III、Main Technical Parameters:

1.Maximum Test Force: 300 kN

2.Test Force Measurement Range: 3–300 kN

3.Test Force Resolution: 1/500,000, unchanged throughout the range

4.Deformation Measurement Range: 1%–100%, unchanged throughout the range

5.Deformation Resolution: 1/500,000, unchanged throughout the range

6.Test Force Accuracy: ≤ ±1% of the indicated value

7.Loading Speed: 100–5,000 N/s (adjustable)

8.Maximum Distance Between Grips: 2,050 mm

9.Rate Control Adjustment Range: 0.01–50 mm/min (stepless adjustment)

10.Grip Displacement Speed Accuracy: ±0.5%

11.Displacement Resolution: 0.001 mm

12.Maximum Tensile Stroke: 150 mm

13. Test Fixtures: φ12.70 and φ15.20, one set each

14. Temperature Sensor Resolution: 0.1°C

15.Control Software: Specialized software based on Windows operating system

16.Dimensions (L×W×H): 2,100 × 700 × 1,210 mm

17.Mainframe Weight: 1,300 kg

18.Mainframe Power Supply: Three-phase 380 V, 50 Hz, 3 kW

IV、 Working Conditions:

1.Ambient Temperature: 20°C ± 2°C

2.Relative Humidity: ≤80%

3.Environmental Requirements: No vibration, corrosive media, or strong magnetic interference

4.Power Supply Voltage: 380 V, with fluctuations not exceeding ±10% of the rated voltage

5.Installation Requirements: Installed horizontally on a stable foundation, with a levelness of 0.2/1,000

6.Grounding: Standard grounding with reliable grounding for control components   

Ⅴ、 Basic Configuration:

1.Testing Machine Mainframe (Manufactured by Jinan Tianchen): 1 unit         

2. Fully Digital Multi-Channel Closed-Loop Control System (Jinan Tianchen): 1 unit

3.Special Relaxation Sensor (300kN): 1 unit

4. Servo Motor Dedicated Reducer: 1 unit

5.Lenovo Computer: 1 unit

6.HP Printer: 1 unit

7.Specialized Control Software (Jinan Tianchen): 1 set

8.Temperature Recording Module: 3 units

9.Temperature Recording Module: 3 units

10. Specialized Steel Strand Clamps (φ12.70, φ15.20): 1 set

11.Steel Strand Deformation Measurement Device: 1 set