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本文用“平百铺展试验”和“Ｔ型接头试验”，研究了６０６３铝合金采用ＡＩ－Ｓｔ钎料和氟化物钎剂（ＱＦ钎剂）钎焊时的钎焊性和钎缝质量。结果表明：在相同条件下，用ＱＦ针剂钎焊６０６３铝合金和钎焊纯铝及ＬＦ２１铝合金相比，钎料的流动性下降，钎剂高温活性降低，焊后钎缝中易产生气孔等缺陷。进一步的研究指出：６０６３铝合金中的合金元素Ｍｇ是使钎剂失效和恶化钎缝质量的主要原因。为了解决现有ＱＦ钎剂在钎焊６０６３铝合金时存在的上述问题，通过大量试验，研制了一种新型的纯氟化物钎剂，使用该钎剂配合Ａｌ－Ｓｉ共晶钎料钎焊６０６３铝合金时，钎料具有良好的流动性，焊后钎缝成形好，无气孔、夹渣等缺陷。
In this paper, the brazing properties and brazing seam quality of 6063 aluminum alloy brazed with AI-St solder and fluoride flux (QF flux) were studied using “Flattening Spread Test” and “T-Joint Test”. The results show that under the same conditions, the flowability of brazing filler metal decreases with the use of QF in brazing aluminum alloy 6063 and brazing pure aluminum and LF21 aluminum alloy, and the brazing flux reduces at high temperature. defect. Further research pointed out: Alloying elements in 6063 aluminum alloy is the main cause of flux failure and deterioration of solder joint quality. In order to solve the above problems existing in the current QF flux brazing 6063 aluminum alloy, a new type of pure fluoride flux was developed through a large number of tests, and the flux was brazed with Al-Si eutectic solder 6063 Aluminum alloy, the solder has good fluidity, welding brazing good shape, no porosity, slag and other defects.