应用焊料热界面材料的过程通常包括在焊料预型件上涂抹助焊剂，并将其回流到两个基底之间的夹层中。 当预型件上涂有助焊剂时，如何在预型件上涂抹助焊剂就不难理解了。它已经为您完成。
这种助焊剂配方通常是Tacflux®，使用助焊剂的关键是不要过量。
上周，我做了一个焊接实验，将 121 合金（96.5Sn3.5Ag）的 1 个预型件焊接到铜上，我想使用TacFlux® 023，因为它是专门为将无铅焊料焊接到标准焊接金属（如铜）而配制的。我知道在焊接过程中，助焊剂需要与焊接的整个基底接触，但我不知道助焊剂会润湿多远，也不知道应该涂抹多少助焊剂。我进行了几次试验，测试了各种涂抹方法和用量。最后我发现，只需在基板中心点上一点助焊剂，就能去除表面氧化物，使焊料润湿整个表面
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