In order to make the surface of brass sheet more beautiful, cleaner, longer preservation time, usually carry on the surface rust inhibitor treatment, and there are many kinds of treatment, according to different states of different treatment: The first surface mechanical rust preventive treatment method, usually just as rust preventive treatment means, including sandblasting, shotblast, sweeping lines or polishing, providing further surface rust preventive treatment with even, smooth, bright and clean, or lines, beautiful or glossy surface, but surface mechanical rust preventive treatment usually is not the final measures of surface rust preventive treatment. In other words, the surface of brass sheet after mechanical rust inhibitor treatment is not the surface of the state of use.
The second chemical conversion antirust treatment method, such as chromization, phosphorous chromization, chromium-free chemical conversion, may be the bottom of the spray layer, but also a final surface antirust treatment means. Chromic film is still used as a protective film for brass sheets. Electroless nickel plating is also called electroless nickel plating, also can be said to be a metal coating surface chemical rust inhibitor treatment.
The third kind of surface chemical rust inhibitor treatment, generally have chemical pre-rust inhibitor treatment and chemical conversion of rust inhibitor treatment. Chemical pre-rust inhibitor treatment is not the final surface rust inhibitor treatment measures, such as degreasing, alkali washing, pickling, chemical polishing, etc., so that the surface of brass sheet is clean, no oxide film or bright surface state, to ensure and improve the quality of subsequent surface rust inhibitor treatment (such as anodic oxidation).
In addition, for the processing of brass engraving plate and spray polymer (physical rust inhibitor treatment) and other physical rust inhibitor treatment methods and so on.
Post time: Sep-13-2022