Electric arc welding gun

Patent · Sun Jan 01 00:00:00 EST 1978

OSTI ID:863149

Luttrell, Edward ^[1]; Turner, Paul W ^[2]

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1. Clinton, TN
2. Idaho Falls, ID

This invention relates to improved apparatus for arc welding an interior joint formed by intersecting tubular members. As an example, the invention is well suited for applications where many similar small-diameter vertical lines are to be welded to a long horizontal header. The improved apparatus includes an arc welding gun having a specially designed welding head which is not only very compact but also produces welds that are essentially free from rolled-over solidified metal. The welding head consists of the upper end of the barrel and a reversely extending electrode holder, or tip, which defines an acute angle with the barrel. As used in the above-mentioned example, the gun is positioned to extend upwardly through the vertical member and the joint to be welded, with its welding head disposed within the horizontal header. Depending on the design of the welding head, the barrel then is either rotated or revolved about the axis of the vertical member to cause the electrode to track the joint.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: W-7405-ENG-26
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4104499
• OSTI ID: 863149
• Country of Publication: United States
• Language: English

Related Subjects

electric
welding
gun
relates
improved
apparatus
interior
joint
formed
intersecting
tubular
example
suited
applications
similar
small-diameter
vertical
lines
welded
horizontal
header
specially
designed
head
compact
produces
welds
essentially
free
rolled-over
solidified
metal
consists
upper
barrel
reversely
extending
electrode
holder
tip
defines
acute
angle
above-mentioned
positioned
extend
upwardly
disposed
depending
design
rotated
revolved
axis
track
acute angle
essentially free
specially designed
improved apparatus
solidified metal
extend upwardly
electrode holder
vertical lines
head disposed
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