Laser Welding of Hardenable Steel

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...

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Bibliographische Detailangaben
Hauptverfasser: CREMERIUS ROLF, PULLEN THOMAS
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung: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.