The invention relates to a welding aluminum coil continuous plating process is characterized in that the process comprises the following steps: (1) preparation of alkali, acid, zinc alloy liquid, dezincifying solution, nickel plating and tin plating solution; (2) removing oil; (3) a washing; (4) alkaline etching; (5) two (6) washing; pickling; (7) washing three times; (8) the first zinc alloy; (9) nitrate dezincifying; (10) second (11) zinc alloy; nickel plating: Nickel Electroplating on aluminum sheet zinc alloy treated by second times. And the current density of nickel plating is 2~10A/cm2; (12): on the tin plating nickel plated aluminum coil after the tin plating, electric current density of tin is 2~15A/cm2, bath temperature is 30 to 60 DEG C. The invention ensures that the bonding ability of the electroplated tin layer and the aluminum material is good, thereby no foaming, no peeling or peeling, low cost and less pollution. ?
【技術實現步驟摘要】
【技術保護點】
一種可焊性鋁卷材連續電鍍工藝,其特征是:包括以下工藝步驟:(1)配制堿液、酸液、鋅合金液、退鋅溶液、鍍鎳液和鍍錫液,待用;所述堿液的配制:氫氧化鈉5~100g/L、碳酸鈉10~50g/L、磷酸鈉10~50g/L、氟化鈉1~10g/L、十二烷基硫酸鈉0.1~2g/L,其余為水;將上述氫氧化鈉、碳酸鈉、磷酸鈉、氟化鈉、十二烷基硫酸鈉在常溫下與水混合配制成堿液;所述酸液的配制:硝酸30~40g/L,硫酸5~10g/L,余量為水,單位為質量百分數;將上述硝酸、硫酸在常溫下與水混合配制成酸液;所述鋅合金液的配制:氫氧化鈉30~300g/L、氧化鋅10~70g/L、硫酸鎳10~60g/L、酒石酸鉀鈉10~300g /L、葡萄酸鈉10~300g/L、硝酸鈉0.1~10g/L,其余為水;將上述氫氧化鈉、氧化鋅、硫酸鎳、酒石酸鉀鈉、葡萄酸鈉、硝酸鈉在常溫下與水混合配制成鋅合金液;所述退鋅溶液的配制:300~400g/L硝酸、60~80g/L硫酸,其余為水;將上述硝酸、硫酸在常溫下與水混合配制成退鋅溶液;所述鍍鎳液的配制:硫酸鎳100~500g/L、硼酸10~100g/L、氯化鎳10~100g/L、十二烷 ...
【技術特征摘要】
【專利技術屬性】
技術研發人員:周明華,
申請(專利權)人:無錫新大中薄板有限公司,
類型:發明
國別省市:32
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