Understanding the matters of high-temperature tension testing machine

high temperatureTension testerThe internal structural parts of the system are different from those of ordinary tensile testing machines. The following is a detailed description of the precautions for high-temperature tensile testing machines.

1. The test can be maintained at the specified test temperature for at least 10 minutes before the test can be started. Until the sample breaks, the temperature meets the temperature deviation (1).

2. Temperature ≤600, temperature allowable deviation ±3; >600-800, temperature deviation ±4; >800-1100, temperature deviation ±5

3. The temperature of the thermocouple reference end should be kept constant, and the deviation should not exceed ±0.5℃.

4. The original gauge distance of the sample is less than or equal to 50mm, and a thermocouple is tied to each end; if it is greater than 50mm, a thermocouple is tied to each end and in the middle.

5. The resolution of the temperature measuring instrument should not exceed 1℃, and the error should not exceed ±2℃.

6. Test rate, find Rp0.2 and yield. From the beginning of the test to the end of the yield stage, the strain rate of the parallel length of the sample should be kept constant. Between 0.001/min-0.005/min. Can also be usedTesting machineThe no-load movement rate of the chuck is 0.002Lc/min (Lc is a parallel length) only needs to be the constant value between 0.02/min and 0.20/min after tensile strength or yield. The test machine chuck can also be used to move the no-load movement rate of 0.1Lc/min (Lc is parallel length)

7. Changes from one test rate to another test rate should be continuously and without impact.

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