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一、概况 我厂电镀车间的碱性锌酸盐镀锌工艺是1974年初投入生产的,由于此工艺氢氧化钠的含量很高,致使胺系添加剂(添加剂见《材料保护》1975年第2期)EQD——Ⅲ消耗较快,特别是热天更甚。同时,若连续生产,溶液温度上升快,温度范围狭窄。当温度升高时,分散能力和深镀能力明显下降(有的零件甚至有镀不上的部位),严重影响了生产和产品质量。在气温高时尽管采用过用自来水循环冷却的措施,但效果仍不够理想,另外,还由于氢氧化钠的浓度高,阳极溶解较快,锌离子迅速增
First, the general situation I plant electroplating shop alkaline zincate zinc coating process was put into production in early 1974, due to the high content of sodium hydroxide in this process, resulting in amine additives (see additives, “Material Protection” No. 2, 1975 EQD - Ⅲ consumes faster, especially on hot days. At the same time, if the continuous production, the solution temperature rises quickly, the temperature range is narrow. When the temperature increases, the dispersion capacity and deep plating capacity decreased significantly (and some parts even have plating on the site), seriously affecting the production and product quality. Although the use of high temperatures when circulating water cooling measures, but the effect is still not good enough, in addition, but also because of the high concentration of sodium hydroxide, the anode dissolved faster zinc ions rapidly increased