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1、铝及铝合金直接化学镀锡液铝及铝合金直接化学镀锡液(2011-02-25 19:49:58) 铝及铝合金电镀一般都要经过除油、出光、浸锌、预镀、电镀工序，即使化学镀There are five procedures that aluminum and aluminum alloy plating usually havedegreasing, bright dipping，zinc dipping，pre-plating and electroplating.镍，也要经过除油、出光、浸锌。如果要镀锡，那么必须经过除油、出光、浸锌、Even if the chemical nickel plati
2、ng, it also has the procedure of degreasing, bright dipping and zinc dipping. If the aluminum and aluminum alloy needs to be tin plated, it needs degreasing, bright dippingzinc dipping, 预镀、电镀工序。非常麻烦，对于尺寸要求较高的工件就更加麻烦，如铝合金活塞镀锡。pre-plating, and electroplating. That would be very trouble, especially for
3、 the work piece with high dimensions requirements, such as aluminum alloy piston tin plating.采用化学镀锡就可避免以上麻烦，经过的工序为：除油清洗-出光-清洗-化学镀锡-清洗-钝化。 溶液为浓缩液，按比例稀释后即可用于生产，可用于铝及铝合金高温快速化学镀锡，镀层白亮到乳 白，附着力好，不易变色，不含重金属，可镀 130u 厚纯锡。用于改善和提高铝及铝合金制品的可 焊性、耐磨性、装饰性等。操作简便，每升溶液产量大，成本低，可用于各种电子产品、汽配、建 材、等各种铝及铝合金制品快速化学镀锡。其导电性及可焊性
4、优良，在空气中能长久保持色泽白亮。 高温 400 度，10 分钟不变色、不起泡，恒温 120 度、两小时不鼓泡，高温摩擦后附着力优于常规铜 -镍-锡镀层 Chemical tin plating is simple, which only needs degrease - cleaning- bright dipping- cleaning- chemical tin plating- cleaning- passivating. The solution is the concentrated one, which can be produced after dilution with a
5、certain proportion. The coating is milky white, with good adhesion, not easily discolored(400, within 10 minutes) and bubbling(120, within 2 hours), and doesnt consist of heavy metals, and can be coated up to 130u thick of pure tin. The coating has good weldability, electroconductibility, abrasive r
6、esistance, and decoration. The operation of chemical tin plating is simple and the cost is low. The adhesion is better than the normal CU-NI-SN electrical tin coating after rubbed under high temperature. 一、工艺参数Tech IndexHA 铝及铝合金化学镀锡液Tin Plating Solution 500ml/L温度Temperature 6585时间Time 530 分钟沉积速度Sedi
7、mentation Velocity 11.5u/分钟 二、配置方法Collocation Method1. 在槽中放入 1/2 体积的纯净水，加入 HA 铝及铝合金化学镀锡液，搅拌均匀。Put in the tin plating solution in a groove with 1/2 volume of purified water and stir evenly.2. 加温至 80，即可生产。Warming up to 80 and then can be produced.3. 使用一段时间后浓度降低，镀速减慢，可补加 HA 铝及铝合金化学镀锡液，浓度控制可根据 锡离子化验或比重控制。If the concentration is reduced and the plating rate slows down, the tin plating solution can be added again. 三、铝及铝合金件化学镀锡工艺流程Technological Process除油清洗除锈清洗化学镀锡清洗浸锡保护剂清洗吹干或晾干Degreasing-Cleaning-Derusting-Cleaning-Chemical Tin Plating-Cleaning-Protect Agent-Cleaning-Drying
