SMT锡膏回温-锡膏搅拌小知识Issuing time:2023-01-02 16:01 SMT锡膏回温-锡膏搅拌小知识
1、锡膏需要冷藏,在使用前需要回温4小时,如没有根据规定冷藏的锡膏,助焊剂会挥发掉,影响焊接;没有回温的锡膏,在焊接过程中,会有水分,在固化的时候有锡爆,产生锡珠,焊锡开裂等问题。 2、锡膏在搅拌前,助焊剂一般在上层,焊锡沉淀在下。并且流动性差,在印刷过程中,会上锡量不均匀。 3、回温后的锡膏需要进行搅拌,可用自动锡膏搅拌机。目的主要是将锡膏与助焊剂充分搅拌,以便后续上锡良好。 以上是广州定昌电子分享的SMT锡膏小知识,定昌专业承接PCBA加工,SMT高精密主板贴片,安卓主板研发等业务,欢迎查询。
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