为了提高矿山与工程机械易损件的使用寿命和利用率,向使用部门提供硬度高,耐磨性良好的备件,沈阳冶金机械修造厂根据冶金部的指示,于1973年开始试验一种铬锰硅钢,以逐步取代原采用的高锰钢材料。在党厂委领导下,组织了三结合小组,依靠群众,深入矿山,进行调查研究,并在材料的化学成分、物理性能和制造工艺等方面做了多次试验,取得 In order to improve the service life and utilization rate of the wearing parts of mines and construction machinery and to provide high hardness and good abrasion-resistant spare parts to the users, Shenyang Metallurgical Machinery Repair Factory started to test a chromium-manganese Silicon steel, to gradually replace the original high manganese steel material. Under the leadership of the Party Committee and Factory Committee, we have organized a three-in-one team to rely on the masses, go deep into the mines and carry out investigations and studies. We have also conducted many tests on the chemical composition, physical properties and manufacturing processes of the materials to obtain