引用本文:韩玉勇，鲁俊杰，李剑峰，孙杰，刘云辉.基于激光熔覆的车床主轴再制造[J].中国表面工程,2015,28(6):147~153
HAN Yuyong, LU Junjie, LI Jianfeng, SUN Jie, LIU Yunhui.Lathe Spindle Remanufacturing Based on Laser Cladding Technology[J].China Surface Engineering,2015,28(6):147~153
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基于激光熔覆的车床主轴再制造
韩玉勇，鲁俊杰，李剑峰，孙杰，刘云辉1,2
1.山东大学 机械工程学院;2. 枣庄科技职业学院 机械工程系
摘要:
随着我国可持续发展重大战略的推进，蕴含着高附加值的损伤、退役机床再制造研究越来越受到重视，作为机床的核心部件之一，损伤主轴再制造成为机床再制造的关键。使用Nd∶YAG固体激光熔覆设备及FeCr合金粉料对损伤45钢主轴进行修复再制造研究，使用扫描电镜观察了熔覆层组织结构，通过显微硬度测试、摩擦磨损试验分析了熔覆层硬度及耐磨性，使用磨床对主轴熔覆层进行精密磨削加工。结果表明所得熔覆层无气孔裂纹等缺陷，其硬度达547 HV0.1，相同负载条件下熔覆层耐磨性为基体材料的3.7倍；磨削加工后再制造主轴完全恢复至设计尺寸，经过相同服役时间后再制造主轴磨损量小于新品主轴磨损量，说明了车床主轴激光熔覆再制造的可行性及有效性。
关键词:  车床主轴  激光熔覆  再制造  磨削  耐磨性
DOI：10.11933/j.issn.1007-9289.2015.06.020
分类号:
基金项目:
Lathe Spindle Remanufacturing Based on Laser Cladding Technology
HAN Yuyong, LU Junjie, LI Jianfeng, SUN Jie, LIU Yunhui1,2
1.School of Mechanical Engineering, Shandong University;2. Department of Mechanical Engineering, Zaozhuang Vocational College of Science and Technology
Abstract:
With the promotion of the sustainable development strategy, remanufacturing research on damaged and retired machine tool containing high additional value is getting increasing attention. As one of the core components of the machine tool, damage lathe spindle remanufacturing becomes the key issue for machine tool remanufacture. The FeCr alloy was deposited on 45 steel spindle used Nd∶YAG laser by laser cladding technology. The microstructure, phase constitution, hardness and wear resistance of the cladding layer were investigated by scanning electron microscope, Xray diffractometer,Vickers digital microhardness and sliding wear tester. The laser cladding layer on spindle was ground by the grinder. The results shows that the cladding layer is free of cracks, presents a remarkable hardness up to 547 HV0.1, and has excellent wear resistance which is 3.7 times of the substrate. Remanufacturing spindle restore the design size, and has less amount of wear compared with that of a new spindle after the same service time. It illustrates that laser cladding is a promising technology for lathe spindle remanufacturing.
Key words:  lathe spindle  laser cladding  remanufacturing  grinding  wear resistance
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