Effect of total heat input on coaxiality of rotor shaft in laser cladding

IF 2.4 4区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Testing Pub Date : 2024-01-08 DOI:10.1515/mt-2023-0152

Shirui Guo, Junhao Yu, Lujun Cui, Yinghao Cui, Xiaolei Li, Yongqian Chen, Bo Zheng

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Abstract

Abstract The total heat input by the laser directly affects the temperature distribution of the rotor shaft during the cladding process, and then affects its coaxiality. This article uses ANSYS for numerical simulation to study the effect of laser heat input on the deformation of the rotor shaft during laser cladding process. Simulate and analyze the temperature and stress fields inside the rotor shaft using thermal coupling. The results show that by changing the pitch, axial cladding width and laser irradiation duration to change the laser induced total heat input, a more uniform temperature distribution can be generated in the rotor shaft. The increase of temperature distribution uniformity can reduce the deformation of rotor shaft during cladding. Using a cladding equipment, iron based customized alloy powder was coated on the 45 steel rotor shaft for cladding experiments. And the mechanical properties and coaxiality of the rotor shaft after cladding were measured. The results showed that the hardness and wear resistance of the cladding layer were significantly improved compared to the substrate, and the changes in coaxiality of the rotor shaft were consistent with the simulation results, with relatively small errors. It is of great significance for repairing damaged rotor shafts.

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总热量输入对激光熔覆转子轴同轴度的影响

摘要激光输入的总热量直接影响熔覆过程中转子轴的温度分布，进而影响其同轴度。本文使用 ANSYS 进行数值模拟，研究激光熔覆过程中激光输入热量对转子轴变形的影响。利用热耦合模拟和分析转子轴内部的温度场和应力场。结果表明，通过改变螺距、轴向熔覆宽度和激光照射时间来改变激光诱导的总热量输入，可以在转子轴上产生更均匀的温度分布。温度分布均匀度的提高可减少熔覆过程中转子轴的变形。使用熔覆设备在 45 钢转子轴上涂覆铁基定制合金粉末，进行熔覆实验。并测量了包覆后转子轴的机械性能和同轴度。结果表明，与基体相比，包覆层的硬度和耐磨性均有明显提高，转子轴同轴度的变化与模拟结果一致，误差相对较小。这对修复损坏的转子轴具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Testing 工程技术-材料科学：表征与测试

CiteScore

4.20

自引率

36.00%

发文量

165

审稿时长

4-8 weeks

期刊介绍： Materials Testing is a SCI-listed English language journal dealing with all aspects of material and component testing with a special focus on transfer between laboratory research into industrial application. The journal provides first-hand information on non-destructive, destructive, optical, physical and chemical test procedures. It contains exclusive articles which are peer-reviewed applying respectively high international quality criterions.