Method and device for controlling plume during laser welding

Patent · Tue Feb 12 00:00:00 EST 1991

OSTI ID:5929341

Fuerschbach, P W; Jellison, J L; Keicher, D M; Oberkampf, W L

This patent describes a method and apparatus for enhancing the weldment of a laser welding system. The laser weld plume control device includes a cylindrical body defining an upside-down cone cavity; the upper surface of the body circumscribes the base of the cone cavity, and the vertex of the cone cavity forms an orifice concentrically located with respect to the laser beam and the plume which forms as a result of the welding operation. According to the method of the invention, gas is directed radially inward through inlets in the upper surface of the body into and through channels in the wall of the body and finally through the orifice of the body, and downward onto the surface of the weldment.

• Assignee: Dept. of Energy, Washington, DC (USA)
• Patent Number(s): US 4992643; A
• Application Number: PPN: US 7-398577
• OSTI ID: 5929341
• Resource Relation: Patent File Date: 25 Aug 1989
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
54 ENVIRONMENTAL SCIENCES
LASER WELDING
CONTROL SYSTEMS
PLUMES
AIR POLLUTION CONTROL
BEAM OPTICS
METALS
PARTICULATES
PROCESS CONTROL
THERMAL POLLUTION
VAPOR CONDENSATION
CONTROL
ELEMENTS
FABRICATION
JOINING
PARTICLES
POLLUTION
POLLUTION CONTROL
WELDING
665300* - Interactions Between Beams & Condensed Matter- (1992-)
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
540140 - Environment
Atmospheric- Thermal Effluents Monitoring & Transport- (1990-)