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石油钻杆采用摩擦焊已有多年了,为了解决去除内外飞边的问题进行了多次探讨,如利用切削法,扩钻法、挤压法及冲剪法等,但均没有成功。目前去除内外飞边仍采用常规办法,即先降低飞边硬度,然后用车床或专用车床将飞边冲剪掉(需第二次加热),这样浪费
Oil drill pipe friction welding has been for many years, in order to solve the problem of removal of inside and outside the flash has been discussed many times, such as the use of cutting method, drilling method, extrusion method and punching method, but no success. The current removal of internal and external flash is still the conventional approach, that is, to reduce the flash hardness, and then lathe or special lathe will be washed off the red edge (second heating), so waste