Method for Stitch-Welding a Front Flange Joint

摘要: The invention relates to a method by which stitch welds ( 5 ) can be produced on the front faces of metal sheets (preferably flanges) means laser welding. In order produce weld seam, following steps are repeated cyclically: pre-heating joining partners 1, 2 in an area seam produced, producing short section 7 at relatively low resulting welding speed, and without as result each case intermediate space 9 is formed between neighbouring sections ). ratio lengths 6, 8 spaces selected such way that degassing achieved extent high quality achieved. particularly suitable for welded joints galvanized, heat-treated steel sheets, often used automobile manufacture/vehicle body construction.