Moldless casting by laser

Marc A. McLean; G. J. Shannon; William M. Steen

doi:10.1117/12.281310

25 September 1997 Moldless casting by laser

Marc A. McLean, G. J. Shannon, William M. Steen

Proceedings Volume 3102, Rapid Prototyping and Flexible Manufacturing; (1997) https://doi.org/10.1117/12.281310
Event: Lasers and Optics in Manufacturing III, 1997, Munich, Germany

Abstract

The principle of laser cladding involves the use of high power carbon-dioxide lasers and powder deposition technology to provide wear and corrosion resistant surface coatings to engineering components. By injecting metal powder into a laser generated melt pool on a moving substrate a solidified metal track can be produced. Deposition of successive tracks produces a multi-layer build. Laser direct casting (LDC) utilizes a coaxial nozzle enabling consistent omnidirectional deposition to produce 3D components from a selection of metal powders. The influence of the principal process parameters over the process features namely, powder catchment efficiency, beam shape and build rates are presented with several successfully generated 3D components. Nickel, stainless steel and satellite powders were deposited at laser powders of 0.4 to 1.4 kW and speeds of 500 to 1000 mm/min achieving build rates of 3 to 9 mm³/s. Fully dense metallurgical structures have been produced with no cracking or porosity and powder catchment efficiencies up to 85% have been achieved.

Citation Download Citation

Marc A. McLean, G. J. Shannon, and William M. Steen "Moldless casting by laser", Proc. SPIE 3102, Rapid Prototyping and Flexible Manufacturing, (25 September 1997); https://doi.org/10.1117/12.281310

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