飞机管簧式起落架激光熔覆修复工艺与性能研究
卢俊文1a,1b, 王斌1a, 孙杰1a, 王倩营1a,1c, 周俊2, 吉小超3
1a. 中国民用航空飞行学院航空工程学院
1b. 中国民用航空飞行学院飞机修理厂
1c. 中国民用航空飞行学院空中交通管理中心
2. 成都国营锦江机器厂再制造事业部
3. 佛山大学机电工程与自动化学院
通信作者: 卢俊文 (1985-), 博士, 高级工程师, 研究领域: 航空器关重件绿色制造/再制造、激光增减材复合制造技术, E-mail: awenlu@cafuc.edu.cn
Research on Laser-Cladding Repair Technology and Performance of Aircraft Tube-Spring Landing Gear
LU Junwen1a,1b, WANG Bin1a, SUN Jie1a, WANG Qianying1a,1c, ZHOU Jun2, JI Xiaochao3
1a. College of Aviation Engineering, Civil Aviation Flight University of China
1b. Aircraft Repair & Overhaul Plant, Civil Aviation Flight University of China
1c. Air Traffic Management Center, Civil Aviation Flight University of China
2. Remanufacturing Division, Chengdu State-owned Jinjiang Machine Factory China
3. School of Mechatronic Engineering and Automation, Foshan University
Corresponding Author: LU Junwen (1985-), Ph.D., Senior Engineer, Research Focus: Green Manufacturing/Remanufacturing of Key and Critical Aircraft Components, Laser Additive and Subtractive Hybrid Manufacturing Technology, E-mail: awenlu@cafuc.edu.cn
文章历史: 收稿日期: 2026-03-23
摘 要
针对50CrVA管簧式起落架在服役过程中因腐蚀超标大量报废的问题，采用激光熔覆技术在起落架外表面使用15-5PH粉末进行修复，得到熔覆实验最佳工艺参数：激光功率400 W，扫描速度4 mm/s，送粉速率0.6 r/min。通过XRD、SEM/EDS对最优工艺熔覆层的物相组成与显微组织进行分析，采用摩擦磨损和电化学极化测试系统评价最优工艺熔覆层的耐磨与电化学性能。结果表明：熔覆层腐蚀电流为2.917×10-6 A，较基体降低约72.6%；熔覆层自腐蚀电位为-0.689 V，较基体提高约22.6%；15-5PH熔覆层平均摩擦系数为0.212，较基体降低约31.4%；最优参数下的熔覆层硬度约为441.44 HV0.5。采用15-5PH粉末对50CrVA管簧式起落架进行激光熔覆修复，可显著提升其耐腐蚀与耐磨性能，为起落架的表面修复提供了一种可靠的技术途径。
Abstract
Aiming at the problem of a large number of scraps due to excessive corrosion during the service of 50CrVA tube-spring landing gear, laser cladding technology was used to repair the outer surface of the landing gear with 15-5PH powder. The optimal process parameters of the cladding experiment were obtained: laser power 400 W, scanning speed 4 mm/s, powder feeding rate 0.6 r/min. The phase composition and microstructure of the cladding layer under optimal process were analyzed by XRD and SEM/EDS. The wear resistance and electrochemical properties of the cladding layer under optimal process were evaluated by friction and wear test system and electrochemical polarization test system. The corrosion current of the cladding layer was 2.917×10-6 A, which is about 72.6% lower than that of the substrate; the self-corrosion potential of the cladding layer was-0.689 V, which was about 22.6% higher than that of the substrate; the average friction coefficient of the 15-5PH cladding layer was 0.212, which was about 31.4% lower than that of the substrate; the hardness of the cladding layer under optimal parameters was about 441.44 HV0.5. Laser cladding repair of 50CrVA tube-spring landing gear using 15-5PH powder significantly enhanced its corrosion and wear resistance, offering a reliable technical solution for the surface repair of landing gear components.
关键词
管簧式起落架; 激光熔覆; 15-5PH; 工艺参数; 组织性能
Keywords
tube-spring landing gear; laser cladding; 15-5PHprocess parameters; microstructure and properties
引用文本
卢俊文, 王斌, 孙杰, 等. 飞机管簧式起落架激光熔覆修复工艺与性能研究[J]. 表面工程与再制造, 2026, 26(2): 1-12. DOI:10.26935/j.issn.2097-5317.2026.0006.
LU Junwen, WANG Bin, SUN Jie, et al. Research on Laser-Cladding Repair Technology and Performance of Aircraft Tube-Spring Landing Gear[J]. Surface Engineering & Remanufacturing, 2026, 26(2): 1-12. DOI:10.26935/j.issn.2097-5317.2026.0006.
中图分类号
TG665;V267
基金项目
国家重点研发计划项目 (2024YFC3098103); 国家自然科学基金项目 (52475179); 成都市区域科技创新合作项目 (2026-YF11-00014-HZ)
实验研究
