在低压电器部分分产品中,如按钮、接触器、小容量自功开关,由于触头的焊接质量问题,直接影响到产品的使用寿命。现在一般厂家对于触头的焊接,大都采用火焰钎焊或平面接触焊。但由于火焰钎焊工艺加热时间较长,烧伤面积较大,在焊接过程中等于使零件退了一次火,对 Part of the low-voltage electrical products, such as buttons, contactors, small-capacity self-power switch, due to the quality of the contact welding, a direct impact on product life. Now the general factory for the contact welding, mostly flame brazing or flat contact welding. However, due to the flame brazing process heating a longer time, a larger burn area, in the welding process is equal to the parts back a fire, the