我矿在使用颚式破碎机过程中，发现由于动鄂体内腔中轴承更换不及时，导致了轴承体的内腔磨损，不能继续使用，只好更新。1997年初，我们采用补焊后加工的方法，由于保温措施不良和焊补层太薄，出现“脱层”现象。1997年2月，我们采用了轴承体内腔扩孔镇套的方法，通过一年多来 During the process of using the jaw crusher, I found that the inner cavity of the bearing body could not be used because of the failure to replace the bearing in the inner cavity of the moving body in time, so it had to be renewed. At the beginning of 1997, we adopted the method of repairing after welding. Due to poor insulation measures and too thin welding layer, “delamination” occurred. In February 1997, we adopted a method of expanding the bore sleeve of the bearing body cavity through more than a year