The salt spray test chamber should pre-treat the test pieces before the test. Below I will give you a detailed introduction of what matters should be paid attention to in the pre-treatment.
1. The sample to be tested must be carefully cleaned before the test, as far as possible to remove impurities (dust, oil or other impurities) that may affect the test results. The cleaning method used should depend on the material properties of the test piece. When cleaning the surface and dirt of the test piece, abrasive materials or solvents that may attack the surface of the sample should not be used;
2. Use an appropriate organic solvent (hydrocarbon with a boiling point between 60 and 120 ° C) and a clean soft brush or ultrasonic cleaning device to thoroughly clean the test sample. After cleaning, rinse the sample with a new solvent and then dry it; how to pretreat the sample in the salt spray test chamber
3. The cleaned samples should avoid being contaminated by inadvertent touch again;
4. The samples intended to be coated with a protective organic film should not be washed out before the test;
If the specimen is cut from a larger coated workpiece, the covering layer near the cutting area should not be damaged. Unless otherwise specified, an appropriate coating that is stable under the test conditions, such as paint, paraffin, or tape, must be used to protect the cutting area.
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