多道激光熔覆Fe基涂层搭接率对温度场与流场的影响

王博¹, 马志豪¹, 丁紫远¹, 刘军军¹, 叶之晨²

1. 郑州升达经贸管理学院
2. 海南大学物理与光电工程学院
通信作者: 丁紫远 (1995-), 硕士, 中级工程师, 主要从事可靠性分析、三维工程制图的研究, 邮箱: shengdajidianding@163.com

Effect of Lap Rate of Multiple Laser Cladding Fe-Based Coatings on Temperature Field and Flow Field

WANG Bo¹, MA Zhihao¹, DING Ziyuan¹, LIU Junjun¹, YE Zhichen²

1.Zhengzhou Shengda University
2.School of Physics and Optoelectronic Engineering, Hainan University
Corresponding Author: DING Ziyuan (1995-), Master's Degree, Intermediate Engineer, Research Focus: Reliability Analysis and 3D Engineering Drawing, E-mail: shengdajidianding@163.com

文章历史: 收稿日期: 2025-09-16

摘    要
多道激光熔覆过程中，搭接率的变化会引起熔池内部传热的变化，进而影响熔覆层的质量。基于多相流理论建立了Fe基合金粉末在20钢基板上的多道熔覆模型，模拟熔覆涂层成型过程，揭示多道熔覆过程中温度场和流场的演变规律，讨论了不同搭接率对熔覆温度场、流场以及Marangoni效应的影响。结果表明，多道熔覆时，温度场的热积累效应尤为显著，搭接率增大，同一道次熔池的温度增大。熔池中存在2个稳定的Marangoni流，随着搭接率增大，熔池中流体的流速增大，Marangoni效应更加显著。

Abstract
In the process of multi-laser cladding, the change of lap rate will cause changes in heat transfer inside the melt pool, which in turn affects the quality of the cladding layer. Based on the multiphase flow theory, a multi-pass cladding model of Fe-based alloy powder on 20 steel substrate was established, the forming process of cladding coating was simulated, the evolution of temperature field and flow field in the process of multi-pass cladding was revealed, and the effects of different lap rates on the cladding temperature field, flow field and Marangoni effect were discussed. Results showed that there were two stable Marangoni flows in the melt pool, and the Marangoni effect was more significant as the flow rate of the fluid in the melt pool increases with the increase of the lap rate.

关键词
激光熔覆; 搭接率; 温度场; 流场; Marangoni效应

Keywords
laser cladding; lap rate; temperature field; flow field; Marangoni effect

引用文本
王博, 马志豪, 丁紫远, 等. 多道激光熔覆Fe基涂层搭接率对温度场与流场的影响[J]. 表面工程与再制造, 2026, 26(1): 1-7. DOI:10.26935/j.issn.2097-5317.2026.0001.

WANG Bo, MA Zhihao, DING Ziyuan, et al. Effect of Lap Rate of Multiple Laser Cladding Fe-Based Coatings on Temperature Field and Flow Field[J]. Surface Engineering & Remanufacturing, 2026, 26(1): 1-7. DOI:10.26935/j.issn.2097-5317.2026.0001.

中图分类号
TG174.4; TG665

基金项目
无

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