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采用Pro/E三维建模,通过ProCAST软件模拟了模铸法制备3.1t的GCr15扁锭的凝固过程,分析了钢锭充型过程中温度场及固相率,预测了钢锭可能产生缩松和缩孔缺陷的位置,研究了其宏观铸造组织。利用扫描电镜(SEM)观察了其微观组织,使用屏显式材料端面高温摩擦磨损试验机研究了微观组织结构对摩擦磨损特性的影响。结果表明,钢锭的凝固顺序:轴向上由钢锭底部向钢锭帽头处推进,径向上从型壁向钢锭的中心逐步进行;钢锭的缩孔集中在帽头部位,钢锭中心易产生缩松;条状、六方棱柱状的M7C3型碳化物对GCr15铸锭的耐磨性影响显著。
ProCAST software was used to simulate the solidification process of 3.1t GCr15 slab by ProCAST software. The temperature field and solid fraction in the ingot filling process were analyzed. It is predicted that the slab may produce shrinkage and shrinkage Hole defect position, the study of its macro-cast organization. The microstructure was observed by scanning electron microscopy (SEM), and the effect of microstructure on the tribological properties was investigated by using the high temperature friction and wear tester. The results show that the order of solidification of the steel ingot is that the axial direction is promoted from the bottom of the steel ingot to the top of the steel ingot and radially from the wall to the center of the steel ingot. The shrinkage of the steel ingot is concentrated on the head of the steel ingot, ; Strip, hexagonal prismatic M7C3 type carbide GCr15 ingot wear resistance significantly.