采用氧-乙炔焰焊接铜铝接头,主要的困难是铜、铝的熔点相差很悬殊(铜的熔点为1083℃,铝的熔点为660℃左右),如果将铜和铝直接往一起焊接,会出现互不融合、互不粘接的现象。因此,采用一般的熔融方法是不可能将铜和铝焊接起来的,必须采用与这两种金属粘合,渗透力很强的银铜焊料做媒介,并借助于铜板接触表面上所镀的银铜钎焊料来获得铜与铝的接头。下面将焊接工艺介绍如下: Oxygen-acetylene flame welding of copper and aluminum joints, the main difficulty is copper, aluminum melting point is very different (copper melting point of 1083 ℃, aluminum melting point of about 660 ℃), if the copper and aluminum directly welded together will be There is no mutual fusion, mutual non-bonding phenomenon. Therefore, it is impossible to weld the copper and the aluminum by the ordinary melting method, and it is necessary to use the silver-copper solder which is bonded with both metals and has a strong penetrating power as a medium and by means of the contact of the copper plate with the silver plated on the surface Braze solder to obtain copper and aluminum joints. The following welding process is as follows: