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Title: Method and apparatus for making instantaneous scarfing cuts
Abstract:
An instantaneous scarfing cut on the surface of a metal workpiece can be made by: (a) causing relative motion between the workpiece and a stream of scarfing oxygen gas, and simultaneously therewith (1) impinging at least one laser beam on the work surface so as to produce a heated path of desired length across said surface relative to its direction of motion, said heated path being produced by the laser beam heating a series of points on said surface to their oxygen ignition temperature, and (2) impinging a stream of scarfing oxygen onto said heated path, thereby causing an instantaneous scarfing cut to begin along said path, and (b) continuing the flow of scarfing oxygen until the desired length of cut has been produced.
Other info: Inventors: Engel, Stephen August (Shenorock, NY, US) Fuhrhop, Ronald Elmer (Suffern, NY, US) Application Number: 789720 Filing Date: 1977-04-25 Publication_date: 1978-04-18 Assignee: Union Carbide Corporation (New York, NY) Primary Class(es): 219/121.67 219/121.68, 219/121.77, 219/121.8, 219/121.84, 266/51 Other Classes: US Patent Ref:
Other Refs: Other References: Adams, M. J., The Use of the CO.sub.2 Laser for Cutting and Welding, Welding Institute Research Bulletin, vol. 9, Sept. 1968. Sullivan, A. B. J. et al., Gas-Jet Laser Cutting, British Welding Journal, Aug. 1967. | |