公开(公告)号：US5256856A

公开(公告)日：1993-10-26

申请号：US869463

申请日：1992-04-15

申请人： Hideaki Takano ,  Jitsuo Nakata ,  Yuji Nakahara ,  Keizoh Nanba ,  Yoshihiko Sugiyama

发明人： Hideaki Takano ,  Jitsuo Nakata ,  Yuji Nakahara ,  Keizoh Nanba ,  Yoshihiko Sugiyama

IPC分类号： B23K9/173 ,  B23K9/23 ,  B23K35/28 ,  C22C21/00

CPC分类号： B23K35/286 ,  B23K9/173 ,  B23K9/23

摘要： This invention involves a MIG welding method for aluminum alloys to prevent the formation and deposition of black powder on or around the weldment's bead. By using pure aluminum wire or aluminum alloy wire containing less than 2.5 wt% the base of alloying components as the consumable electrode wire and using aluminum alloy wire as the filler wire 3, the consumable electrode wire 2 and the filler wire 3 are fed into the a metal bath under a certain weight ratio, so that the alloy composition of the molten metal bath is equivalent to that of the base of the black powder on the both sides of the weldment's bead can be is avoided.