Simulation and Microstructure of Mould Casting GCr15 Slab during Solidification Process

Cheng Qi; Wan Le; Yu Xiaohua; Liu Jianxiong; Zhan Zhaolin; Zhang Guanqun; Liu Cheng

doi:10.15980/j.tzzz.2017.08.007

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Simulation and Microstructure of Mould Casting GCr15 Slab during Solidification Process
Vol. 37, Issue 8, Pages: 834-837(2017)
Published： 2017 ，
DOI： 10.15980/j.tzzz.2017.08.007

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[1]程琪,万乐,于晓华,刘建雄,詹肇麟,张冠群,刘成.模铸法制备GCr15扁锭模拟与微观组织研究[J].特种铸造及有色合金,2017,37(08):834-837.

Cheng Qi, Wan Le, Yu Xiaohua, et al. Simulation and Microstructure of Mould Casting GCr15 Slab during Solidification Process. [J]. Special Casting & Nonferrous Alloys 37(8):834-837(2017)
[1]程琪,万乐,于晓华,刘建雄,詹肇麟,张冠群,刘成.模铸法制备GCr15扁锭模拟与微观组织研究[J].特种铸造及有色合金,2017,37(08):834-837. DOI： 10.15980/j.tzzz.2017.08.007.

Cheng Qi, Wan Le, Yu Xiaohua, et al. Simulation and Microstructure of Mould Casting GCr15 Slab during Solidification Process. [J]. Special Casting & Nonferrous Alloys 37(8):834-837(2017) DOI： 10.15980/j.tzzz.2017.08.007.

摘要

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。

Abstract

The solidification process of GCr15 slab prepared by mould casting method was visualized by means of ProCAST softwave based on Pro/E modeling.The temperature field and solidification fraction of steel ingot were analyzed to visualize the potential shrinkage porosities（holes）position.In addition

the macro-structure was observed.The microstructure of the slab was observed by scanning electron microscopy（SEM）.The effects of microstructure on friction and wear behavior of the slab were analyzed by display material-end high temperature wear-frictional tester.The results reveal that the solidification tendency of the ingot is advanced from the bottom to the top of steel ingot and radially from the mold wall to the center of the ingot.In addition

the shrinkage holes are concentrated in the cap of the ingot

and shrinkage porosities are easily formed in the center of the ingot.The strip-like and hexagonal prismshaped M7C3 carbides have greatly effects on the wear resistance of the GCr15 slab.