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一般钢材的铜钎焊工艺历来都使用铜焊粉(即“粉301”)作焊剂。在焊接过程中,一面要加热母材金属及铜焊丝,一面还要用铜焊丝蘸焊剂,然后送到焊接部位。焊后会形成一层焊渣,覆盖于钎焊缝表面。从强度上讲,这种工艺已达到我公司轿车生产的要求,这一层焊渣虽然对母材无多大腐蚀作用,但却极难除尽。焊渣中绝大部分仍为硼的化合物。桑塔纳轿车车壳拼焊后的下道工序是清
Copper brazing process of steel has always been the use of copper powder (ie, “powder 301”) as a flux. In the welding process, one side to heat the base metal and copper wire, but also with a copper wire dipped in flux, and then sent to the welding parts. After welding will form a layer of welding slag, covering the surface of the brazing seam. From the strength of speaking, this process has reached my company car production requirements, although this layer of slag on the base metal corrosion is not much, but extremely difficult to eliminate. Most of the slag is still boron compounds. Santana sedan car welding the next procedure is clear