宋刚

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:材料科学与工程学院

学科:材料连接技术

办公地点:材料学院铸造工程中心406

联系方式:0411-84707817

电子邮箱:songgang@dlut.edu.cn

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Laser-assisted wire cladding using a retrofitted laser welding system

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论文类型:期刊论文

发表时间:2021-05-12

发表刊物:SURFACE ENGINEERING

卷号:37

期号:5,SI

页面范围:634-641

ISSN号:0267-0844

关键字:Laser cladding; wire deposition mode; low alloy steel; Inconel wire; Ytterbium-doped fibre laser welding; analysis of variance; process optimization; wire cladding

摘要:Laser-assisted wire cladding has emerged as a popular method for the surface modification and repair of components as it provides cleaner processing environments, reduced costs with higher material deposition rates, and better surface finish. However, the high capital cost of laser cladding systems can be detrimental to their adoption in industry. This work presents a favourable option for industry by using a traditional 6 kW Ytterbium-doped fibre laser welder retrofitted with a MIG welder wire-feeding system to obtain laser cladded surfaces without specialized laser cladding equipment. A high dynamic range camera is used to observe material deposition modes, which influence the coating and surface quality. Process-related mechanisms are proposed to explain the observed deposition modes, along with an analysis of the process parameters that influence the clad characteristics. By carefully selecting the process parameters in this non-traditional laser cladding option, defect-free depositions with good surface finish can be achieved.