Butt joint laser penetration fusion welding method

• Main Authors: ARTEL JENS, DORNSCHEIDT CHRISTIAN, SZORN, J ¨ 1 RGEN, K ¨ 1 MMEL, LUTZ, SEGERS STEFAN
• Format: Patent
• Language: Chinese; English
• Published: 29.07.2022
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The invention relates to a butt joint laser penetration welding method for joining mutually facing end sections of flat steel products, each having a carbon content CS < 0.02%. In order to improve such a method in such a way that the weld quality can be improved in terms of geometry and strength by means of said method, at least one carbon-containing carrier material is introduced into the butt joint gap between the end sections, said carrier material having a carbon content CT > = 20 CS, preferably CT > = 100 CS, and/or carbon is introduced into the butt joint gap or applied to the at least one end section such that the volume of carbon introduced into the butt joint gap corresponds to 1% to 20% of the volume of the melt produced by the butt joint laser penetration welding process. 本发明涉及一种用于接合扁钢产品的彼此朝向的端部部段的对接接头激光深熔焊接方法，所述扁钢产品分别具有的碳含量CS＜0.02％。为了改进这种方法使得可借助其在几何形状和强度方面改进焊缝质量，将至少一种含碳的载体材料引入端部部段之间的对接接头间隙中，所述载体材料的碳含量为CT≥20·CS、优选CT≥100·CS，和/或将碳引入到对接接头间隙中或施加到至少一个端部部段上，使得引入对接接头间隙中的碳的体积相当于通过对接接头激光深熔焊接过程制造的熔体的体积的1％至20