宽温酸性镀锌工艺  

Acidic zinc plating process over wide temperature range

作　　者：郭崇武[1] 

机构地区：[1]广州超邦化工有限公司,广东广州510460

出　　处：《电镀与涂饰》2011年第12期17-19,共3页Electroplating & Finishing

摘　　要：制定了宽温酸性镀酸锌工艺。滚镀的最佳工艺为:氯化锌45～55g/L,氯化钾200～230g/L,硼酸30～35g/L,402主光剂1mL/L,402辅光剂30mL/L,温度15～45℃,pH=4.5～5.5,电压5.5～6.5V。挂镀时只需改氯化锌含量为55～65g/L,电流密度1～3A/dm2。该工艺允许的温度范围宽,镀液稳定,出光快,均镀能力和深镀能力好。所用主光剂和辅光剂都具有较好的抗氧化能力。A technology of acidic zinc plating over wide temperature range was established. The optimal process parameters for barrel zinc plating are as follows： zinc chloride 45-55 g/L, potassium chloride 200-230 g/L, boric acid 30-35 g/L, 402 major brightener 1 mL/L, 402 auxiliary brightener 30 mL/L, temperature 15-45 ℃, pH 4.5-5.5, and voltage 5.5-6.5 V. For rack zinc plating, the mass concentration of zinc chloride and current density are 55-65 g/L and 1-3 A/dm2 respectively while the other parameters are the same as barrel zinc plating. The process has advantages of wide available temperature range, stable plating bath, rapid bright plating, as well as desirable throwing power and covering power. Both the major and auxiliary brighteners have excellent oxidation resistance.

关 键 词：酸性镀锌 温度范围 光亮剂 抗氧化性 

分 类 号：TG153.15[金属学及工艺—热处理]