Hydrogen induced cracking HIC detection mechanism
Tianjin Rong Da Testing Co., Ltd. contact: Wang Jingfu
Cell phone: 13102238283 QQ:3144667033
Telephone: 022-23892103
Large capacity testing and testing experience, corrosion testing is complete welcome advice!
HIC anti hydrogen induced cracking test procedure:
1: according to the standard requirements of the preparation of samples
2: the use of distilled water and analysis of pure grade chemical preparation of the test solution of this trial.
3: test, test C Tong degreasing, then rinse with alcohol, processing (degreasing, grinding) good specimen clamping in organic glass test frame on the special test, into the container, the container after the test solution was injected into the container.
4: the test pressure is normal pressure, the test temperature is 25 + 3
5: the rate of 100ml per minute per liter of solution through the nitrogen 1H.
6: the closing of nitrogen, at a rate of 200ml per minute per liter of solution into the hydrogen sulfide gas 1 hours, and then reported that the positive pressure of hydrogen sulfide gas, for 96 hours.
7: ventilation is completed, remove the sample cleaning in the water, and cleaned with alcohol and dried in the cold.
8: according to the standard cutting test and metallographic observation