Laser Welding of Hardenable Steel
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United States of America Patent
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app pub date -
Sep 10, 2004
filing date -
Sep 10, 2004
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Abstract
Process for producing a weld seam (1) in hardenable steel, comprising at least the following steps: a) positioning a laser beam (2) with respect to a weld line (3); b) heating subregions (4) of the steel by means of the laser beam (2), with the laser beam (2) being guided along a welding track (5) which is longer than the weld line (3); c) cooling the heated subregions (4) of the steel.This welding process produces crack-free welded joins without the need for secondary heating of the hardenable steel. A preferred application area for weld seams of this type is to join components of the drive train of automobiles.
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