Method for laser welding a fin and a tube

Patent · Mon Jan 01 00:00:00 EST 2001

OSTI ID:874045

Fuerschbach, Phillip W ^[1]; Mahoney, A Roderick ^[2]; Milewski, John O ^[3]

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1. Tijeras, NM
2. Albuquerque, NM
3. Santa Fe, NM

A method of laser welding a planar metal surface to a cylindrical metal surface is provided, first placing a planar metal surface into approximate contact with a cylindrical metal surface to form a juncture area to be welded, the planar metal surface and cylindrical metal surface thereby forming an acute angle of contact. A laser beam, produced, for example, by a Nd:YAG pulsed laser, is focused through the acute angle of contact at the juncture area to be welded, with the laser beam heating the juncture area to a welding temperature to cause welding to occur between the planar metal surface and the cylindrical metal surface. Both the planar metal surface and cylindrical metal surface are made from a reflective metal, including copper, copper alloys, stainless steel alloys, aluminum, and aluminum alloys.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• DOE Contract Number: AC04-94AL85000
• Assignee: Sandia Corporation (Albuquerque, NM)
• Patent Number(s): US 6300591
• OSTI ID: 874045
• Country of Publication: United States
• Language: English

Related Subjects

method
laser
welding
tube
planar
metal
surface
cylindrical
provided
placing
approximate
contact
form
juncture
welded
forming
acute
angle
beam
produced
example
yag
pulsed
focused
heating
temperature
occur
reflective
including
copper
alloys
stainless
steel
aluminum
planar metal
acute angle
reflective metal
steel alloy
beam heating
laser welding
metal surface
laser beam
stainless steel
pulsed laser
aluminum alloy
copper alloy
steel alloys
aluminum alloys
cylindrical metal
laser weld
copper alloys
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