刀具的钎焊,在小量生产时,往往采用氧乙炔焰加热、螺纹夹具。因刀具被加热,体积膨胀,尺寸a增大,当加热到一定程度时,焊料熔化后溢出,尺寸a减少,从而使夹具的夹紧力难以控制。夹松 Tool brazing, in a small amount of production, often using oxyacetylene flame heating, threaded fixture. Because the tool is heated, the volume expansion, size a increases, when heated to a certain extent, the solder overflows after melting, the size of a reduced, so that the grip of the clamping force is difficult to control. Loose