电子接插件镍-磷合金中间层电镀工艺

Electroplating process of nickel-phosphorus alloy as medium layer for electronic connectors

介绍了一种电子行业接触件连续电镀生产线所用的卷对卷连续工艺,其流程主要包括化学除油、阳极电解除油、活化、镀氨基磺酸镍、镀氨基磺酸镍-磷合金、选择性镀金、选择性镀亮锡、锡防变色、金封孔和烘干。说明了氨基磺酸盐体系电镀镍-磷合金中间层工艺中镀液成分及操作条件对镀层结构和物性的影响,给出了工艺维护以及杂质处理的方法。

A continuous roll-to-roll process for electroplating production of connectors in electronic industry was introduced.The process flow includes chemical degreasing,anodic electro-degreasing,activating,sulfamate Ni electroplating,sulfamate Ni-P alloy electroplating,selective Au electroplating,selective bright Sn electroplating,anti-tarnishing for Sn layer,sealing for Au layer,and drying.The effects of bath composition and operation conditions on the electroplating of Ni-P alloy as medium layer from a sulfamate bath were described.The technological maintenance and methods for treating impurities were given.