Explanation of poor plating of aviation plugs

In order to make the aviation plug life extension, will be on the aviation plug pin plating treatment, due to the complexity of the plating process, plating process is likely to be some bad situation, this article for the analysis of these situations. Aviation plug plating bad situation analysis 1, skinning, bagging: separation between the plating layer and the base metal. Common reasons are (plating solution PH value is too high, poor pretreatment before plating, cleaning is incomplete, too many organic impurities, plating process power failure, etc.). 2, over-acid washing: plating process will be used in the acid or alkali cleaning of the workpiece, if too many impurities in the workpiece, will be with the cleaning solution acid and alkali chemical reaction, resulting in the phenomenon of surface erosion. 3, point corrosion: commonly used in die-casting shell products, die-casting produced by the pores will remain some of the tank liquid, which will form a local battery effect, resulting in the plating layer is not dense, point corrosion. 4, discoloration: silver plating process when the oxidation, plating layer is too thin, environmental effects. 5、Burning: when plating when the current is too high, it will form a dark, rough and loose deposits. 6、Spongy plating layer: loose and porous buildup produced by poor combination of substrate materials in the plating process. 7, dendritic plating: common in the edge of the aviation plug equipment, plating process is not standardized, resulting in the formation of dendritic or irregular deposits on the cathode.

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