Study on Environment-friendly Cyanide-free Zinc Plating Process
The effects of zinc oxide,sodium hydroxide,additive A,and additive B on the quality of the coating were studied through single factor experiments and orthogonal experiments,respectively.Based on the optimal combination of process parameters,a comparative study was conducted on cyanide free and cyanide free zinc plating processes.The results show that when the zinc oxide content is 14 g/L,the sodium hydroxide content is 140 g/L,the additive A content is 8 mL/L,and the additive B content is 1 mL/L,coating quality is the best.The coating and plating solution properties of cyanide free zinc plating are equivalent to those of cyanide plated zinc plating,and can meet the requirements of aerospace QJ452 standard.The wastewater treatment,safety management,and drug procurement cost of cyanide free galvanizing process can save 300000 yuan/year.
cyanide-free zinc platingcyanide zinc platingprocess parameterssafety and environmental protectioncladding material
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