天气预报 > 其他 > 合格的焊点其外观应具备哪些要求
合格的焊点其外观应具备哪些要求
更新时间: 2020-08-16 00:00:00  

牢接要牢固,锡点方圆满,光亮,不能有拉尖,毛刺现象。焊接时不能有连锡短路,冷焊,虚焊,假焊现象。表面润湿程度:熔融焊料在被焊金属表面上应铺展,并形成完整、均匀、连续的焊料覆盖层,其接触角应不大于90度。焊料量:焊料量应适中,避免过多或过少。

关键词: 合格 外观 具备 哪些 要求

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