摘要
当前,如何有效去除氧化物和获得较高的熔覆层质量是激光熔敷技术在铝合金材料应用中面临的难题。为提高激光熔覆层质量,在铝合金激光熔覆中引入了CJ401气焊熔剂,通过大量实验获得了熔覆层的宏观形貌、稀释率、显微硬度、搭接率、摩擦学性能、耐磨性等物理量与特性,进一步通过比较和分析获得了CJ401气焊熔剂对激光熔覆层质量的影响特性。结果表明,添加CJ401气焊熔剂可改善熔覆层的宏观形貌,增大稀释率;在激光功率1800W,扫描速度3mm/s,光斑直径4mm,搭接系数0.5的最优工艺参数下获得的熔覆层较基体硬度提高了61%,滑动摩擦系数降低了19.7%,耐磨性提高了10.9%。
The alloy powder A186SiCu is used to produce laser cladding on the surface of aluminum alloy YL113. The macro morphology and dilution rate of the laser cladding layer with gas welding flux CJ401 and without gas welding flux CJ401 were respectively investigated. The hardness ,friction and wear properties of the cladding layers are studied under different process parameters. The experimental results show that the macro morphology of cladding layer was im- proved and the dilution rate is increased due to the addition of gas welding flux C J401 ; Under the optimum process pa- rameters of laser power 1800W, scanning speed 3turn/s, spot diameter 4mm and overlapping coefficient 0.5, the re- quired hardness of the cladding layer was improved by 61%, the sliding friction coefficient was reduced by 19.7% and the wear resistance was increased by 10.9%.
出处
《激光杂志》
北大核心
2017年第6期4-7,共4页
Laser Journal
基金
青岛市开发区科技发展项目(2014-1-58)
青岛市民生科技计划项目(15-9-2-124-nsh)
关键词
铝合金
激光熔覆
气焊熔剂
工艺参数
显微组织
aluminum alloy
laser cladding
gas welding flux
laser cladding parameters
microstructure
