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. ?
【技术实现步骤摘要】
【技术保护点】
一种可焊性铝卷材连续电镀工艺,其特征是:包括以下工艺步骤:(1)配制碱液、酸液、锌合金液、退锌溶液、镀镍液和镀锡液,待用;所述碱液的配制:氢氧化钠5~100g/L、碳酸钠10~50g/L、磷酸钠10~50g/L、氟化钠1~10g/L、十二烷基硫酸钠0.1~2g/L,其余为水;将上述氢氧化钠、碳酸钠、磷酸钠、氟化钠、十二烷基硫酸钠在常温下与水混合配制成碱液;所述酸液的配制:硝酸30~40g/L,硫酸5~10g/L,余量为水,单位为质量百分数;将上述硝酸、硫酸在常温下与水混合配制成酸液;所述锌合金液的配制:氢氧化钠30~300g/L、氧化锌10~70g/L、硫酸镍10~60g/L、酒石酸钾钠10~300g /L、葡萄酸钠10~300g/L、硝酸钠0.1~10g/L,其余为水;将上述氢氧化钠、氧化锌、硫酸镍、酒石酸钾钠、葡萄酸钠、硝酸钠在常温下与水混合配制成锌合金液;所述退锌溶液的配制:300~400g/L硝酸、60~80g/L硫酸,其余为水;将上述硝酸、硫酸在常温下与水混合配制成退锌溶液;所述镀镍液的配制:硫酸镍100~500g/L、硼酸10~100g/L、氯化镍10~100g/L、十二烷 ...
【技术特征摘要】
【专利技术属性】
技术研发人员:周明华,
申请(专利权)人:无锡新大中薄板有限公司,
类型:发明
国别省市:32
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