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Title: Method for laser welding ultra-thin metal foils

A method for simultaneously cutting and welding ultra-thin foils having a thickness of less than 0.002 inches wherein two ultra-thin films are stacked and clamped together. A pulsed laser such as of the Neodymium: YAG type is provided and the beam of the laser is directed onto the stacked films to cut a channel through the films. The laser is moved relative to the stacked foils to cut the stacked foils at successive locations and to form a plurality of connected weld beads to form a continuous weld.
 [1];  [2];  [2]
  1. (Fort Collins, CO)
  2. (Golden, CO)
Issue Date:
OSTI Identifier:
Midwest Research Institute (Kansas City, MO) NREL
Patent Number(s):
US 5502292
Contract Number:
Research Org:
Midwest Research Institute
Country of Publication:
United States
method; laser; welding; ultra-thin; metal; foils; simultaneously; cutting; thickness; 002; inches; films; stacked; clamped; pulsed; neodymium; yag; type; provided; beam; directed; cut; channel; moved; relative; successive; locations; form; plurality; connected; weld; beads; continuous; weld bead; laser welding; pulsed laser; metal foil; moved relative; laser weld; stacked films; simultaneously cutting; metal foils; ultra-thin foil; ultra-thin films; welding ultra-thin; stacked film; simultaneously cut; /219/