粘锡是电镀锡机组软熔导电辊失效的主要原因,应用化学方法脱锡是延长导电辊寿命的重要途径.开发了氢氧化钠(钾)为主要组成,并加入适量亚铅酸钠(钾)和硝酸(亚硝酸)钠配制而成脱锡剂,当脱锡剂温度为40～80℃,导电辊表面温度为40～70℃时,对粘锡导电辊具有很好的脱锡效果.粘锡导电辊脱锡后的表面粗糙度可以恢复到4.0μm以上,导电辊使用寿命提高80%,降低导电辊修复成本90%,并大幅度减少导电辊更换时间,提高电镀锡机组生产作业率.
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