过去焊接硬质合金刀具,用铜片硼砂作为焊药,用乙炔氧焰铜焊法。这一方法比较简单。在焊接时先用四氯化炭(CCl4)将刀杆焊接部分洗刷,在洗刷後加上一层硼砂,剪铜皮一块放在刀片下,然後加热刀杆部分(图Ⅰ)因为刀杆体积较大,吸收热量较剧。铜将熔解时,再在刀片上加热(图2),使刀杆焊 In the past welding cemented carbide tools, copper borax as flux, acetylene oxygen flame brazing method. This method is relatively simple. In the welding first with carbon tetrachloride (CCl4) will be welded parts of the arbor after washing, add a layer of borax, cut a piece of copper under the blade, and then heated arbor part (Figure I) because the arbor volume Larger, more heat absorption. When the copper will melt, it is then heated on the blade (Figure 2) to allow the holder to be welded