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Part-geometry independent real time closed loop weld pool temperature control system for multi-layer dmd process

  • US 20060032840A1
  • Filed: 08/28/2003
  • Published: 02/16/2006
  • Est. Priority Date: 08/28/2002
  • Status: Active Grant
First Claim
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1. A method of forming a metal section on a metal substrate by depositing a plurality of superimposed layers using a laser generating a heating beam and a powdered metal source operative to feed metal powder into the beam and moving the substrate relative to the beam under numerical control over a programmed path to provide an advancing melt pool, comprising:

  • sensing parameters of the melt pool at a plurality of selected coordinates during the generation of a plurality of metallic layers, storing the sensed parameters of the pool at each of the selected coordinates, and processing the stored parameters to determine an appropriate laser power for use during the deposition of a subsequent layer.

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