《Table 1 Double-pulse MIG welding parameters》

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《焊接顺序对6061-T6铝合金汽车结构件焊接残余应力及变形的影响（英文）》

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The double-pulse MIG welding method was used to weld the aluminum alloy bumper.The bumper and the crash boxes were 2 mm-thick 6061-T6 aluminum alloy thin-plate sections.ER5356 aluminum alloy welding wire with a diameter of 1.2 mm was used as the consumable electrode.The chemical composition and mechanical properties of the welded sections and the welding wire were in accordance with the preliminary study[11].During the welding，the wire extension was17 mm，the shielding gas was 99.999%argon and the gas flow rate was 25 L/min.The specific technological parameters of the double-pulse MIG welding are shown in Table 1.