Research About Microstructure and Wear Resistance of Hardfacing Layer on Cast Iron

材料保护, 2004, 37(z2): 170-172.

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1.College of Mechanical & Electrical Engineering, East China Jiaotong University, Nanchang, 330013, P. R. China

2.College of Mechanical & Electrical Engineering, East China Jiaotong University, Nanchang, 330013, P. R. China

3.College of Mechanical & Electrical Engineering, East China Jiaotong University, Nanchang, 330013, P. R. China

基金项目: 机械工业部自然科学基金 Project(95251214)

Research About Microstructure and Wear Resistance of Hardfacing Layer on Cast Iron

It's simple technology to manufacture big trimming die by hardfacing on the base metal of cast iron. The chemical composition, microstructure, hardness, wear resistance and wear mechanism of the hardfacing layer were studied.The experimental results indicate that the hardfacing technology has much more advantages and cheaper than that of traditional process. The chemical composition, microstructure, hardness of the hardfacing metal are all satisfied for manufacturing the big trimming die by welding on cast iron. The wear resistant test of hardfacing layers were carried out by using two different electrodes. The wear resistance of new electrode hardfacing layer is higher than that of normal hardfacing electrode D322. The wear mechanism of hardfacing layer is belongs to abrasive wear model.

参考文献

[1]	Zhou Z F;Zhang W.Weld metallurgy and weldability of metal[M].Bejing:Publishing company of mechanical industry,1992
[2]	何柏林,于影霞,张建新,魏兴宝.大型冷冲模铸铁镶块堆焊焊条的研制及应用[J].热加工工艺,2004(02):4-6.
[3]	HeBL;QiaoXX;ZhangJX .Development of A New Hardfacing Electrodefor Cold Die Insert[J].Journal of Luoyang Institution of Technology,2002,23:12-15.

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Research About Microstructure and Wear Resistance of Hardfacing Layer on Cast Iron

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