苏联柳勃林铸造-机械工厂和莫斯科中心修理机械工厂的铸造车间铸造一种具有耐磨表面层的车钩钩锁钢铸件(见下图),重12.1公斤,壁厚达48毫米。车钩钩锁主要遭受磨损,没有大的冲击负载,所以在表面层的组织中可以有过共析钢的过剩的碳化物,这种碳化物可以用喷雾器以密度1.12克/厘米~3、数量为0.30克/厘米~2的自 Soviet Union Thumbering Foundry - Foundry shop at the Machinery Works and Moscow Center Repair Machineries manufactures a hook-and-hitch steel casting with a wear-resistant surface layer (see below) weighing 12.1 kg and a wall thickness of 48 mm. Hooks and hooks are primarily worn and do not have a large impact load, so excess carbide in the surface layer can have eutectoid steel, which can be sprayed at a density of 1.12 g / cm3 in a quantity of 0.30 g / cm ~ 2 since