Electroplated galvanized wire before the need for cleaning
Compared with other galvanizing process, when cyanide zinc plating on the substrate before the cleaning requirements of the standard is low.
Compared with other galvanizing process, when cyanide zinc plating on the substrate before the cleaning requirements of the standard is low. However, in the current continuously for greater cyanide zinc coating quality level trend, small plating tank into certain contaminants. Harmful things become apparent. Since the zinc coating cleaning waste a lot of time and reduces the yield, therefore, of the substrate before plating appropriate cleaning is very important and effective rinsing operation.
To partially remove the surface for a wide film, the surface defects such as inclusions can be found on the outer layer is deposited by conventional techniques and processed; excessive foaming due to surfactant soap and saponification of fats into the bath and the like is formed. Moderate foam-forming speed may be harmless. In the bath with the presence of a large number of tiny particles that can stabilize the foam layer, but the excessive accumulation of solid particles can cause an explosion. With activated carbon to remove the seats of surface-active substances. Or through a filter so that the foam is not stable, which are effective measures; should also take other measures to make the surface of the active substance into the minus minimum. Can significantly reduce organics into the plating speed. Although the chemical formulation in favor of a high deposition rate, but the organic matter with people, so that the coating thickness can not meet the requirements, and therefore available activated carbon treatment bath.
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