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51问答网 > 印制电路板焊接后的残留物大致可分为那几类？

印制电路板焊接后的残留物大致可分为那几类？

2025-03-15 10:15:02

推荐回答（1个）

回答1：

印制电路板焊接后的残留物大致可分为三类：
A、颗粒性污染物——灰尘、棉绒和焊锡球。焊锡球是一种焊接缺陷，如果设备的振动使大量小焊锡球聚集到一个部位上，便可能引起电短路。焊锡球是可以通过清洗去除的。
B、非极性污染物——松香树脂、石蜡及波峰焊上使用的抗氧化油，还有操作者遗留下的或洗手剂。
C、极性沾污物——卤化物、酸和盐。

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