Title: Laser welding chamber

Abstract: Apparatus and method for laser welding in a controllably pure gaseous environment at sub-atmospheric as well as high pressures. A workpiece to be welded is contained within a vessel having a light transmitting means which allows passage of a laser beam into the vessel. A gas stream is introduced to the vessel through a gas inlet means and positioned so that the stream deflects ionized particles from impinging on the light transmitting means. The gas stream simultaneously serves to cool the light transmitting means. Weld debris and spent gas are exhausted through a gas exhaust means which preferably is located adjacent to the workpiece. The apparatus is particularly suited to the laser welding of oxide dispersion strengthened alloys.

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Inventors: Kelly, Thomas J. (Suffern, NY, US)

Application Number: 839027
Filing Date: 1977-10-03
Publication_date: 1979-07-24
Assignee: The International Nickel Company, Inc. (New York, NY)
Primary Class(es): 219/121.63 219/121.64, 219/121.84
Other Classes:
US Patent Ref:

2987610	Jun, 1961	Steigerwald	219/121.
3626141	Dec, 1971	Daly	219/121.
3824368	Jul, 1974	Lake	219/121.
3866398	Feb, 1975	Verno, Jr. et al.	219/121.
3965328	Jun, 1976	Locke	219/121.
3992161	Nov, 1976	Cairns et al.	29/182.
4000392	Dec, 1976	Banas et al.	219/121.
4027137	May, 1977	Liedtke	219/121.

Other Refs:
Primary Examiner: Truhe, J. V.
Assistant Examiner: Bell, Fred E.
Attorney: MacQueen; Ewan C., Petersen; Walter A., Leff; Miriam W.