Powder flow and catchment during coaxial laser cladding

Jehmming Lin; William M. Steen

doi:10.1117/12.281111

18 August 1997 Powder flow and catchment during coaxial laser cladding

Jehmming Lin, William M. Steen

Proceedings Volume 3097, Lasers in Material Processing; (1997) https://doi.org/10.1117/12.281111
Event: Lasers and Optics in Manufacturing III, 1997, Munich, Germany

Abstract

The blown powder laser cladding process has recently been greatly enhanced by the development of a coaxial powder feed system. This system is described in this paper together with some of the new applications arising from it. The powder feeder depends on various gas flow streams. The effect of these streams on the focus of the powder stream is discussed from experiments using image analysis. The thermal behavior of the powder particles as they fall in a laser heated stream is also analyzed theoretically and experimentally. The effect of the powder focus and preheat on the catchment efficient of the resulting clads is mathematically modelled and compared to the experimental results for a stainless steel clad on a mild steel substrate.

Citation Download Citation

Jehmming Lin and William M. Steen "Powder flow and catchment during coaxial laser cladding", Proc. SPIE 3097, Lasers in Material Processing, (18 August 1997); https://doi.org/10.1117/12.281111

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