Upon analysis of the screw thread damage on the dismantling screw,new dismounting kit and hollow screw have been designed and made by the plant independently a.

• 针对这种情况,分析了拆卸螺杆上螺纹发生损坏的原因,自行设计制作了新的拆卸套具及空心螺杆,取得了很好的效果。