目前我国广泛用于黄铜钎料的钎剂是硼砂或在硼砂中加入适量的硼酸,还有些钎剂是在硼砂与硼酸的混合物中加入适量的盐类。但这些钎剂在某些焊接条件下,对焊接接头的保护效果方而仍有不足之处,且焊后残渣为不溶于水的玻璃状物,多用机械方法或热酸溶液浸泡来去除。从某些国外化工产品报导中得知,五硼酸钾可作为铜焊钎剂。由于钾盐比钠盐价格贵,我们将该组成的钠盐试用于黄铜钎焊,以求在钎剂使用效果上得到改善,结果表明确有许多优点。经过试验,研制 At present, China is widely used brass brazing flux is borax or borax by adding the right amount of boric acid, and some flux is in the borax and boric acid mixture by adding the right amount of salt. But these flux in some welding conditions, the effect of the protective effect of the welded joints and there are still inadequacies, and welding residue is insoluble in water glass, and more mechanical methods or hot acid solution soak to remove. From some foreign chemical products reported that potassium pentaborate can be used as brazing flux. Since potassium salt is more expensive than sodium salt, we tried the brazing of this sodium salt for brass brazing in order to improve the effect of flux. The results show that there are indeed many advantages. After testing, research and development