ABS塑料与6082铝合金搅拌摩擦点焊工艺及机理

Process and mechanism of friction stir spot welding between ABS plastic and 6082 aluminum alloy

针对2 mm厚的ABS塑料板和6082-T6铝合金进行搅拌摩擦点焊可焊性试验,并将成形较好的试件的横截面的形貌进行了观察分析,并对其进行力学性能的测试.结果表明,将铝合金板放在上,塑料板放在下的搭接方式可以实现良好的连接;最优工艺参数为搅拌头旋转速度为400 r/min,焊接时间为30 s,所得焊接接头的抗拉剪载荷最大为3.31 k N;点焊接头有两种断裂模式.

Weldability test on 2 mm thick ABS plastic and6082-T6 aluminum alloy sheets were conducted by friction stir spot welding.The cross-section of resultant specimen was observed and analyzed,and the mechanical properties of the joint were measured.It is found that good connection could be obtained with aluminum alloy on the top and plastic at the bottom.The optimal welding parameters were rotation speed of 400 r/min and welding time of 30 s.The maximum tensile shear load of the welded joints reached 3.31 kN.The spot joints failed with two fracture modes.