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1、铝及铝合金直接化学镀锡液(2011-02-2519:49:58) 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Therearefiveproceduresthataluminumandaluminumalloyplatingusuallyhave—degreasing,brightdipping,zincdipping,pre-platingandelectroplating.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、Evenifthechemicalnickelplating,italsohastheprocedureofd
2、egreasing,brightdippingandzincdipping.Ifthealuminumandaluminumalloyneedstobetinplated,itneedsdegreasing,brightdippingzincdipping,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,andelectroplating.Thatwouldbeverytrouble,especiallyfortheworkpiecewithhighdimensionsrequirements,suchasaluminumall
3、oypistontinplating.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1~30u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 Ch
4、emicaltinplatingissimple,whichonlyneedsdegrease->cleaning->brightdipping->cleaning->chemicaltinplating->cleaning->passivating.Thesolutionistheconcentratedone,whichcanbeproducedafterdilutionwithacertainproportion.Thecoatingismilkywhite,withgoodadhesion,noteasilydiscolored(400℃,within10minutes)a
5、ndbubbling(120℃,within2hours),anddoesn’tconsistofheavymetals,andcanbecoatedupto1~30uthickofpuretin.Thecoatinghasgoodweldability,electroconductibility,abrasiveresistance,anddecoration.Theoperationofchemicaltinplatingissimpleandthecostislow.TheadhesionisbetterthanthenormalCU-NI-SNelectricaltinco
6、atingafterrubbedunderhightemperature.一、工艺参数TechIndex HA铝及铝合金化学镀锡液TinPlatingSolution 500ml/L 温度Temperature 65~85℃ 时间Time 5~30分钟 沉积速度SedimentationVelocity 1~1.5u/分钟 二、配置方法CollocationMethod1.在槽
7、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。Putinthetinplatingsolutioninagroovewith1/2volumeofpurifiedwaterandstirevenly.2.加温至80℃,即可生产。Warmingupto80℃andthencanbeproduced.1.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。Iftheconcentrationisredu