Laser-assisted wire cladding using a retrofitted laser welding system

ABSTRACT

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.

KEYWORDS:

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

Acknowledgements

This work would not have been possible without the support of the Canada Research Chairs (CRC) Program. We acknowledge the support of the Natural Sciences and Engineering Research Council (NSERC) of Canada. The authors gratefully acknowledge the FAPESP (São Paulo Research Foundation) for financial support. This work was also supported by the State Scholarship Fund of China.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Funding

This project was supported with funding from the Canada Research Chairs, the Natural Sciences and Engineering Research Council (NSERC) Canada [547491-2020], FAPESP [2018 / 26425-1], and SSFC [No.201906065031].