Method for laser welding ultra-thin metal foils

Title: Method for laser welding ultra-thin metal foils

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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.

Inventors:

Pernicka, John C. ^[1]; Benson, David K. ^[2]; Tracy, C. Edwin ^[2]

(Fort Collins, CO)
(Golden, CO)

Issue Date:: 1996-01-01

OSTI Identifier:: 870355

Assignee:: Midwest Research Institute (Kansas City, MO) NREL

Patent Number(s):: US 5502292

Contract Number:: AC36-83CH10093

Research Org:: Midwest Research Institute

Country of Publication:: United States

Language:: English

Subject:: 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/

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