采用加外箍(如图)的方法代替过去用补焊的方法来修复岩芯管或取粉管接头,可以延长使用寿命约一倍. 外箍尺寸如图所示.加工时,车好岩芯管接头后,不更动车床小刀架的角度,接着加工外 The use of additional hoop (Figure) instead of using the method of repair welding in the past to repair the core pipe or take the powder tube connector, you can extend the service life of about double the outer hoop size shown in the figure, After the core pipe joints, do not change the angle of the lathe knife holder, followed by processing