The salt spray test is an environmental test that mainly uses artificially simulated salt spray environmental conditions created by the salt spray test chamber equipment to evaluate the corrosion resistance of products or metal materials. It is divided into two categories, one is the natural environment exposure test, and the other is the artificial accelerated simulated salt spray environment test. Artificial salt spray test includes neutral salt spray test, acetate salt spray test, copper accelerated acetate salt spray test, alternating salt spray test. Next, let's talk about copper accelerated acetate spray test.
The Copper Accelerated Acetate Spray Test (CASS) is suitable for evaluating the corrosion performance of decorative copper / nickel / chromium or nickel / chromium coatings designed for rigorous applications on steel, zinc alloys, aluminum alloys, and plastics. It is also suitable for testing anodized aluminum. The CASS experiment is widely used, which is beneficial to accepted specifications, simulation service evaluation, manufacturing control and R & D. The use of salt spray test chamber testing has greatly improved the quality of electroplated parts, and has led to the development of new and excellent electroplating processes.
The copper accelerated acetate salt spray test solution is also different from the salt spray solution of other experimental methods. According to the specifications of D1193, type IV, the salt solution is prepared by 5% by weight of salt, 95% of water, and the salt should be sodium chloride , ASC reagent grade. The pH of this solution should be between 6.0 and 7.0. If the PH exceeds this range (Note 2), suspect salt and water or impurities in salt or water.
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