氮碳合金化自保护硬面药芯焊丝堆焊层的组织与性能
Microstructure and Properties of Hardfacing Metal of Carbonitride Alloyed Self-shielded Hardfacing Flux-cored Wire
摘 要
研制出了氮碳合金化自保护硬面药芯焊丝,探讨了回火温度对氮碳合金化自保护硬面药芯焊丝堆焊层硬度和耐磨性能的影响.结果表明:其堆焊层硬度为36.5~45.5 HRC,显微组织为板条马氏体和铬、钛、钒、铌的氮碳化物的复合物,堆焊层中的氮碳化物质点不易分解,有良好的稳定性和抗高温回火性能;回火温度为550 ℃时,堆焊层硬度达到最大值,回火温度高于550 ℃,硬度值基本保持不变;氮碳合金化自保护硬面药芯焊丝堆焊层金属的磨损机理为磨粒切削后塑性磨痕和氮碳化物的块状剥离,堆焊层具有良好耐磨性能的最佳回火温度为480~520 ℃.
氮碳合金化
堆焊层金属
耐磨性能
hardfacing flux-cored wire
carbonitride alloying
hardfacing metal
wear-resisting property
Abstract
The carbonitride alloyed self-shielded hardfacing flux-cored wire had been developed.The influence of the tempering temperature on hardness and wear-resisting property of hardfacing metal had been discussed.The hardness values of hardfacing metal are from 36.5 to 45.5 HRC,the microstructure of hardfacing metal consiste of lath-shaped martensite and carbonitride of Cr,Ti,V and Nb.These carbonitride is hard to be discomposed and had good stability and high temperature temper-resistant property.The hardness could reach the highest when the tempering temperature was 550 ℃ and the hardness is almost constant when the temperature is higher than 550 ℃.The weight loss of wear of carbonitride alloyed self-shielded hardfacing flux-cored wire is plastic grinding crack cut by abrasive particles and block desquamation temperature of carbonitride,and the hardfacing metal had good wear-resisting property in the tempering temperature range of 480-520 ℃.
中图分类号 TG422.3
所属栏目
基金项目 湖北省科技攻关资助项目(2002AA107B03)
收稿日期 2006/7/25
修改稿日期 2006/10/24
网络出版日期
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备注李延娜(1979-),女,河南汝州人,硕士研究生.
引用该论文: LI Yan-na,YU Sheng-fu,YANG Ke,ZHOU Qiang,MA Long. Microstructure and Properties of Hardfacing Metal of Carbonitride Alloyed Self-shielded Hardfacing Flux-cored Wire[J]. Materials for mechancial engineering, 2007, 31(7): 38～41
李延娜,余圣甫,杨可,周强,马龙. 氮碳合金化自保护硬面药芯焊丝堆焊层的组织与性能[J]. 机械工程材料, 2007, 31(7): 38～41
被引情况:
【1】邓 宇,余圣甫,黄林兵,闫 宁, "电弧喷涂新型碳氮合金化马氏体钢涂层的耐磨性能",机械工程材料 40, 25-27(2016)
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参考文献
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【2】Menon R.Recent advances in cored wire for hardfacing[J].Welding Journal,2002,82(11):53-58.
【3】杨可,余圣甫,李延娜,等.自保护硬面药芯焊丝药芯成分对焊接飞溅的影响[J].机械工程材料,2007,31(6):19-21.
【4】余圣甫,焦桂珊,谢明立,等.新型明弧硬面药芯焊丝研制[J].华中科技大学学报,2004,32(11):18-20.
【5】王清宝,刘景凤,沈风刚.超低碳氮强化自保护药芯焊丝的研制及性能分析[J].焊接学报,2006,27(4):81-84.
【6】Hawk J A,Simmons J W,Rawers J C.Effect of nitrogen alloying on the microstructure and abrasive wear of stainless steels[J].Journal of Materials Engineering and Performance,1994,3(2):261-272.
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