钢厂导卫板激光增材修复层的组织与性能研究
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摘要
利用激光增材再制造技术,以M2高速钢作为合金粉末,在45钢导卫板表面进行激光修复工艺试验,分别使用扫描电镜、能谱仪、显微硬度计对修复层的微观组织、成分及硬度进行分析,并对修复层进行摩擦磨损试验。结果表明:导卫板熔覆层组织均匀致密、晶粒细小,无裂纹、气孔等缺陷,与基体结合良好;导卫板熔覆层硬度及耐磨性相较于基体均有所提高,能有效提高使用寿命,具有很好的使用效果。
High-speed steel M2 served as the alloy powder, the laser additive remanufacturing technology was applied to laser remanufacturing test for the surface of steel 45 foreplate. The microstructure, component and hardness of the recovered layer were analyzed separately by SEM, EDS and microhardness tester, and the wear test for the recovered layer was conducted. The results showed: the cladding layer of the foreplate was characterized by uniform and compact microstructure, tiny grain without cracks and pores or other defects, and well bonded with substrate; both the hardness and the wear resistance properties of the cladding layer of the foreplate enhanced compared with the substrate, thus the service life effectively increased and excellent service effects were achieved.
High-speed steel M2 served as the alloy powder, the laser additive remanufacturing technology was applied to laser remanufacturing test for the surface of steel 45 foreplate. The microstructure, component and hardness of the recovered layer were analyzed separately by SEM, EDS and microhardness tester, and the wear test for the recovered layer was conducted. The results showed: the cladding layer of the foreplate was characterized by uniform and compact microstructure, tiny grain without cracks and pores or other defects, and well bonded with substrate; both the hardness and the wear resistance properties of the cladding layer of the foreplate enhanced compared with the substrate, thus the service life effectively increased and excellent service effects were achieved.
引文
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[2]姚利松,范群.厚板轧机导卫装置受力分析[J].重型机械,2017(3):64-68.
[3]路王珂,谢敬佩,邵星海,等.纳米TiC颗粒增强导卫板表面合金的耐磨性能[J].河南科技大学学报(自然科学版),2014,35(1):1-3.
[4]谢敬佩,郭正,邵星海,等.纳米TiN增强导卫板铸渗层的组织研究[J].河南科技大学学报(自然科学版),2012,33(5):1-3.
[5]肖国伟.高线轧机滚动导卫寿命的提高[J].天津冶金,2012(3):19-21.
[6]裴洋,张巨银.轧钢机导卫板材料的研究现状及展望[J].装备制造技术,2011(12):106-108.
[7]李国平,李罡.轧钢导卫板堆焊修复材料试验研究[J].新技术新工艺,2010(1):72-74.
[8]凤平,李罡,李国平.轧钢导卫板堆焊材料研究与应用[J].粉末冶金工业,2009,19(5):34-36.
[9]王海棠.导卫板负压铸渗法表面改性组织及性能的研究[D].兰州:兰州理工大学,2009:1-4.
[10]王宏.铬镍钼合金在导卫耐磨件上的应用[J].冶金设备,2009(增刊1):75-76.
[11]王海斗,徐滨士,魏世丞,等.导卫板失效分析及表面喷涂层的耐磨性能[J].金属热处理,2005,30(8):39-41.
[12]闫灿斌,何利杰,杨俊.基于激光增材技术的船舶主轴铜套修复应用研究[J].焊接技术,2018,47(8):79-85.
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