攀钢轨梁厂型钢 130 0ｍｍ辊式矫直机的关键零部件套环 ,在使用过程中受磨损、挤压、间接冲击 ,内锥孔和外壁磨损而报废。其年消耗量为 32件 ,若制造新品 ,目前攀钢内部还无设备能力锻造80 0ｍｍ的锻件。因此 ,为了降成本、增效益 ,对套环的修复工作具有十分重要的作用。1　? Panzhihua Iron and Steel Co., Ltd. rail beam plant beam 130 0mm roller straightening of the key components of the ring, in the course of wear and tear, extrusion, indirect impact, taper hole and outer wall wear and scrapped. Its annual consumption of 32 pieces, if the manufacture of new products, there is no current capacity of Pangang forging  80 0mm forgings. Therefore, in order to reduce costs and increase efficiency, the restoration of the collar has a very important role. 1 ?