论述了复合型壳精密铸造工艺的特点以及用其生产抛丸器高铬铸铁耐磨件的优势,并对高铬铸铁耐磨件的微观组织结构和力学性能进行了分析,研究了不同热处理方式对其微观组织结构和硬度的影响。采用复合型壳精铸工艺生产的抛丸器高铬铸铁耐磨件,经空淬+低温回火后,硬度达64.2 HRC,抗拉强度达450 MPa,冲击韧度达9 J/cm2. The characteristics of composite shell precision casting process and the advantages of using it to produce high chromium cast iron abrasives for shot blasting are discussed. The microstructure and mechanical properties of high chromium cast iron wear parts are analyzed. The effects of different heat treatment methods Its microstructure and hardness effects. The high-chromium cast iron abrasives of the shot blasting device produced by the composite shell casting process have a hardness of 64.2 HRC, an impact strength of 450 MPa and an impact toughness of 9 J / cm 2 after being subjected to air quenching and low-temperature tempering.