高锰钢属于难加工材料,其表层具有强烈的加工硬化特性,材料内部具有单相奥氏体组织,其耐磨性及韧性优良,无磁性,故得到广泛应用。为避免高锰钢加工硬化,需要铸造或直接磨削后使用。但是对精度要求较高的零件,就不能达到设计要求。图1所示为大型发电机组的定子压圈法兰盘,材料为ZG40Mn18Cr3高锰奥氏体无磁铸钢。 High manganese steel is difficult to machine materials, the surface has a strong work hardening properties, the material has a single phase austenitic structure, its excellent wear resistance and toughness, non-magnetic, it has been widely used. In order to avoid high manganese steel work hardening, need to use casting or direct grinding. However, the parts that require higher accuracy can not meet the design requirements. Figure 1 shows a large generator stator pressure ring flange, the material is ZG40Mn18Cr3 high manganese austenitic non-magnetic cast steel.