公开(公告)号：US4567343A

公开(公告)日：1986-01-28

申请号：US710000

申请日：1985-03-13

申请人： Eric C. Sullivan ,  Daniel W. Allford

发明人： Eric C. Sullivan ,  Daniel W. Allford

IPC分类号： B23K9/173 ,  B23K9/16

CPC分类号： B23K9/173

摘要： A welding torch is shown with a dual shield gas flow for preventing flux buildup on the weld area for welds in confined spaces. The torch has a wire conduit for receiving an advancing supply of welding wire. The wire conduit has a curved end portion for guiding the welding wire toward the weld area and has an opening through which the welding wire extends for welding. A primary gas conduit directs the flow of primary shield gas and has an open, gas dispensing end adjacent the wire conduit opening. A secondary shield gas source located rearward of the gas dispensing end directs the flow of secondary shield gas in the direction of the weld area. The secondary shield gas flow is arranged to surround the primary gas flow in the direction of the weld. The orientation of the primary gas exiting the primary gas conduit induces the flow of secondary gas to change direction to provide additional gas shielding for the weld area.

摘要翻译： 焊枪显示有双重屏蔽气流，用于防止在密封空间焊缝处焊接区域的焊剂积聚。 手电筒具有用于接收焊丝进给的电线的导线管。 导线管具有用于将焊丝引向焊接区域的弯曲端部，并且具有开口，焊丝通过该开口延伸用于焊接。 主气体导管引导主屏蔽气体的流动，并且在导线管开口附近具有开放的气体分配端。 位于气体分配端的后方的辅助屏蔽气体源引导辅助屏蔽气体在焊接区域的方向上的流动。 辅助屏蔽气体流被布置成围绕沿着焊接方向的主气流。 离开主要气体管道的主要气体的取向引起二次气体的流动改变方向，为焊接区域提供额外的气体屏蔽。