Preparation method and electroplating process of cyanide-free alkaline rack-plating galvanizing bath

Application number 201510738808. 4

Application date 2015. 11. 03

Applicant Jiangsu Mengde Electroplating Chemical Co., Ltd. Address 212300 Yannan, Yanling Town, Danyang City, Zhenjiang City, Jiangsu Province

Inventor Hang Dongliang

Name of invention

A cyanide-free alkaline rack plating zinc plating plating solution preparation method and electroplating process

Summary

The present invention relates to a preparation method and electroplating process for rack galvanizing bath, especially a preparation method and electroplating process for cyanide-free alkaline rack galvanizing. The specific process flow is (1) preparing zinc oxide (2) Prepare the zinc melting tank, when the zinc content is 30g/L, stop adding zinc oxide to the tank; (3) add softener, brightener, impurity remover, purifying agent, anti-scorch opener, this The plating solution prepared by the invention does not contain cyanide plating solution, and allows a wide use temperature range and can be used in the range of 20-4CTC. During electroplating, a bright and beautiful coating can be obtained in a wide range of current density. The coating thickness is uniform, the dispersion ability is good, the coating is soft, and the trivalent chromium passivation is easy. After plating, it can be processed and deformed. The plating solution is simple and stable

A non-cyanide Alkaline rack plating galvanizing bath preparation method and electroplating process.pdf