Method and device for controlling plume during laser welding
Abstract
A method and apparatus for enhancing the weldment of a laser welding system is provided. 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. The gas flow is then converted by the orifice of the device from radial flow to an axisymmetric gas jet flowing away from the weldment surface in a direction perpendicular to the surface and opposite to that of the laser.
- Inventors:
-
- Tijeras, NM
- Albuquerque, NM
- Issue Date:
- Research Org.:
- AT&T
- OSTI Identifier:
- 867705
- Patent Number(s):
- 4992643
- Assignee:
- United States Department of Energy (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING
- DOE Contract Number:
- AC04-76DP00789
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; device; controlling; plume; laser; welding; apparatus; enhancing; weldment; provided; weld; control; cylindrical; defining; upside-down; cone; cavity; upper; surface; circumscribes; base; vertex; forms; orifice; concentrically; located; respect; beam; result; operation; according; gas; directed; radially; inward; inlets; channels; wall; finally; downward; flow; converted; radial; axisymmetric; jet; flowing; direction; perpendicular; opposite; direction perpendicular; radially inward; gas jet; laser welding; upper surface; control device; gas flow; laser beam; radial flow; welding operation; laser weld; concentrically located; /219/
Citation Formats
Fuerschbach, Phillip W, Jellison, James L, Keicher, David M, and Oberkampf, William L. Method and device for controlling plume during laser welding. United States: N. p., 1991.
Web.
Fuerschbach, Phillip W, Jellison, James L, Keicher, David M, & Oberkampf, William L. Method and device for controlling plume during laser welding. United States.
Fuerschbach, Phillip W, Jellison, James L, Keicher, David M, and Oberkampf, William L. Tue .
"Method and device for controlling plume during laser welding". United States. https://www.osti.gov/servlets/purl/867705.
@article{osti_867705,
title = {Method and device for controlling plume during laser welding},
author = {Fuerschbach, Phillip W and Jellison, James L and Keicher, David M and Oberkampf, William L},
abstractNote = {A method and apparatus for enhancing the weldment of a laser welding system is provided. 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. The gas flow is then converted by the orifice of the device from radial flow to an axisymmetric gas jet flowing away from the weldment surface in a direction perpendicular to the surface and opposite to that of the laser.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1991},
month = {Tue Jan 01 00:00:00 EST 1991}
}