Screw coating adhesion strength inspection and corrosion resistance inspection

May 23,2022 / BY DEVELOPERS

There are many methods for evaluating the adhesion between the coating and the base metal, usually the following.

1. Friction polishing test; 2. File method test; 3. Scratch method; 4. Bending test; 5. Thermal shock test; 6. Extrusion method.

The test methods for corrosion resistance of coatings are: atmospheric exposure test; neutral salt spray test (NSS test); acetate salt spray test (ASS test), copper accelerated acetate spray test (CASS test); and corrosion paste corrosion test (CORR test) and solution spotting corrosion test; immersion test, inter-dipping corrosion test, etc.