Aluminum-copper dissimilar metal friction stir welding device with preset welding wire and welding method

• Main Authors: LIU SHIXI, ZHAO BOBO, RU LILI, GAO YUNXI, CHEN FURONG
• Format: Patent
• Language: Chinese; English
• Published: 15.09.2023
• 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 discloses an aluminum-copper dissimilar metal friction stir welding device with a preset welding wire and a welding method. The welding process is completed by arranging an angle mold with a chamfer size at the inner angle of a T-shaped joint, placing the preset welding wire in advance, and inserting a stepped stirring head into a wall plate metal and then into a rib plate metal; the effective bearing area of the T-shaped joint is increased, the material flow at the chamfer is improved, and the defects of the T-shaped joint are reduced, so that the welded joint with better formability and mechanical property is obtained. 本发明公开了一种预置焊丝的铝铜异种金属搅拌摩擦焊装置及焊接方法，通过在T型接头内角设置带倒角尺寸的角模具，提前放置预置焊丝，采用阶梯状搅拌头从壁板金属插透再入到筋板金属内部，来完成焊接过程，增加T型接头有效承载面积，改善倒角处材料流动，减少T接头缺陷，从而获得成型性及力学性能较好的焊接接头。