一、问题的提出目前我国焊接自行车前叉大都采用盐浴钎焊,这种焊接工艺存在很多问题如:工序多、占用设备多,且接头结构复杂,焊缝间隙不易填满,盐炉控温困难,接头大面积遭受高温加热,焊后盐难除净严重影响烤漆质量。不但劳动强度高、返修率高而且还耗用了大量的能龄及材料。目前西德库勒斯特 First, the problem raised At present, most of our welding bike fork salt bath brazing, this welding process, there are many problems such as: more processes, equipment and more, and the joint structure is complex, the weld gap is not easy to fill, salt furnace temperature control Difficulties, the joint suffered a large area of ​​high temperature heating, salt after welding not only seriously affect the quality of paint net. Not only high labor intensity, high repair rate but also consume a large amount of age and materials. Currently West de Curest