Shanghai Linpin analysis of salt spray test chamber test pieces how to pretreat

The salt spray test chamber should be pre-treated before the test. The following is a detailed introduction to the precautions.

1. The sample to be tested must be carefully cleaned before the test to remove as much impurities (dust, oil or other impurities) as possible that may affect the test results. The cleaning method used shall depend on the nature of the material of the test piece. When cleaning the surface of the test piece and the dirt, the abrasive material or solvent that may erode the surface of the sample shall not be used;

2. Thoroughly clean the sample to be tested using a suitable organic solvent (hydrocarbons boiling between 60 and 120 ° C) and a clean soft brush or ultrasonic cleaning device. After washing, rinse the sample with a new solvent and then dry;

3. The sample after cleaning should be prevented from being contaminated again by inadvertent touch;

4. Samples intentionally coated with a protective organic film layer shall not be cleaned before the test;

If the specimen is cut from a larger coated workpiece, the coating near the cutting zone should not be damaged. Unless otherwise specified, the cutting zone must be protected with a suitable coating that is stable under the test conditions, such as paint, paraffin or tape.

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