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What are the factors affecting the galvanizing of metal stamping parts
In order to make metal stamping parts beautiful and prevent corrosion, stamping parts manufacturers usually choose to galvanize the surface of the product. The application fields of electro-galvanization are very wide, including machinery manufacturing, 3C electronics, precision instruments, chemical industry, medical industry, aerospace and so on. In the actual production process of the stamping plant, what factors will affect the quality of electrogalvanized? Precision will give you a specific analysis. 1. The surface of metal stamping parts is not thoroughly cleaned, and a curing film is formed on the surface of the stamping parts, which affects the normal deposition of electro-galvanized parts; 2. The carbon content of stamping parts is high. High-carbon steel and cast iron parts will reduce the hydrogen evolution potential, accelerate the hydrogen precipitation on the surface of the workpiece, and reduce the efficiency of electroplating; 3. The stamping parts are bound too tightly, and part of the surface is not electroplated in place during the galvanizing process. 4. Additives in the galvanizing solution The content is low. If the additive content is low, it will affect the zinc dispersion ability, and the coating will appear too thin in some parts; 5. Surface corrosion will also reduce the hydrogen precipitation potential, the hydrogen precipitation on the surface of the stamping parts will accelerate, the current efficiency will decrease, and the zinc deposition rate will be affected. ; 6. Low sodium hydroxide content. If the content of sodium hydroxide is low, the current density will decrease and anode passivation will occur; 7. Anode passivation will reduce the effective area, which will affect the normal distribution of current; [Recommended recommendation] Learn more: There are methods for polishing the surface of stainless steel. Which ones? Learn more: Manufacturing characteristics of automobile stamping parts molds Learn more: Points to note in the design of continuous stamping dies (2)