Hot and cold impact tester test sample operation process
Hot and cold impact tester is widely used in plastics, electronics, metals, rubber and even defense industry, and is one of the common materials testing equipment. Hot and cold impact tester is generally used to test the structure of materials or composite materials, in an instant under the sustained environment of high temperature and low temperature can tolerate. Applicable to scientific research, quality inspection and measurement, schools, factories, military and other units for electrical, electronic products, semiconductors, electronic circuit boards, metal materials, bearings and other materials in the adaptability test under the environment of rapid changes in temperature. Through the equipment test of the thermal shock tester, the product reliability and product quality control can be effectively enhanced.
Although many companies have purchased thermal shock testers, there are still many uncertainties. Now, the operation of the thermal shock tester is briefly described.
Step: Sample preparation: The sample to be tested is placed under normal test atmospheric conditions until a stable temperature is achieved.
Part II: Initial sample detection: The sample to be tested is compared with the standard requirements. After meeting the requirements, the sample is placed directly into the thermal shock tester for testing.
Three Steps: Sample Test: This is a formal test and is an important step in testing the product with a hot and cold impact tester.
First, the test sample of the hot and cold impact tester must be placed in the test box strictly according to the requirements of the implementation standards of the cold and hot shock box, and the temperature in the test box (chamber) should be raised to the specified test point, and be maintained for a sufficient time to the test sample. The temperature is stable and depends on the length of time.
Secondly, be sure to switch the test sample to a low temperature test chamber (chamber) that has been adjusted to -55°C within 5 minutes after the high temperature chamber is tested. Hold it for 1 hour or until the test sample reaches a stable temperature. Take the length of time as quasi.
Again, after the completion of the low-temperature test box, the test sample is transferred within 5 minutes to a high-temperature test chamber (chamber) that has been adjusted to 70°C for 1 hour or until the test sample reaches a stable temperature, whichever is longer.
After that, in order to ensure the accuracy of the material's high and low temperature thermal shock test results, repeat the above method by repeating the above steps for three cycles. Because of the size of the sample and the size of the space, time may be slightly wrong.
Four steps: Recovery: After the test sample is removed from the test chamber, recovery should be performed under normal test atmospheric conditions until the test sample reaches a stable temperature.
Post-testing: The results of the test results were evaluated by the degree of damage in the thermal shock tester against the standard and other methods.
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