A method to weld together pieces that contain substratum using a focused laser beam

The object of this invention is a method to weld together pieces (5, 13) that contain substratum by focusing a laser beam (10) to their common surface between them and so the focal point (12) energy melts material in both pieces (5, 13) at the same time and the focused laser beam (10) is set to move...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	MAATTANEN, ANTTI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING GLASS MACHINE TOOLS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY MINERAL OR SLAG WOOL PERFORMING OPERATIONS PHYSICS SOLDERING OR UNSOLDERING TESTING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	The object of this invention is a method to weld together pieces (5, 13) that contain substratum by focusing a laser beam (10) to their common surface between them and so the focal point (12) energy melts material in both pieces (5, 13) at the same time and the focused laser beam (10) is set to move in relation of the pieces (5, 13) that do not move in relation to each other with such a velocity that the melted material when getting hard forms a united welded seam. According tothe invention,when the surfaces to be joined together are three-dimensional the height position of the laser beam (10), focal point (12) is altered following the measuring results of a light beam (7a, 7b) that advances in front of the laser beam so that it focuses all the time with a certain accuracy to the common surface.