1、引言随着散热器的不断铝化,铝的硬钎焊也取得了发展。现在使用钎剂的浸渍钎焊,炉焊与无钎剂钎焊技术都被采用。虽然钎剂可取得良好的流动性,但还存在残余钎剂的去除,钎剂清洗不净而造成的母材的腐蚀,污水排水管道及夹具的损坏等问题。近年来,无钎剂钎焊的研究得到了发展。真空钎焊与有钎剂钎焊一样,可以说,母材及焊缝表面存在着氧化膜还原和清除的强度决定了钎焊的性质。 1, Introduction With the continuous aluminum radiator, aluminum brazing has also made development. Immersion brazing with flux now, furnace and fluxless brazing are all used. Although the flux can achieve good fluidity, but there are still residual flux removal, flux cleaning is not net caused by corrosion of the parent material, sewage pipes and fixtures damage and other issues. In recent years, research on fluxless brazing has been developed. Vacuum brazing, as with brazing fluxes, can be said that the strength of the reduction and removal of the oxide film on the surface of the base metal and the weld determines the properties of brazing.