Apparatus for maintaining alignment of a shrinking weld joint in an electron-beam welding operation

Patent · Thu Jan 01 00:00:00 EST 1981

OSTI ID:863996

Trent, Jett B ^[1]; Murphy, Jimmy L ^[2]

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1. Knoxville, TN
2. Oak Ridge, TN

The present invention is directed to an apparatus for automatically maintaining a shrinking weld joint in alignment with an electron beam during an electron-beam multipass-welding operation. The apparatus utilizes a biasing device for continually urging a workpiece-supporting face plate away from a carriage mounted base that rotatably supports the face plate. The extent of displacement of the face plate away from the base is indicative of the shrinkage occuring in the weld joint area. This displacement is measured and is used to move the base on the carriage a distance equal to one-half the displacement for aligning the weld joint with the electron beam during each welding pass.

• 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 4291219
• OSTI ID: 863996
• Country of Publication: United States
• Language: English

Related Subjects

apparatus
maintaining
alignment
shrinking
weld
joint
electron-beam
welding
operation
directed
automatically
electron
beam
multipass-welding
utilizes
biasing
device
continually
urging
workpiece-supporting
plate
carriage
mounted
base
rotatably
supports
extent
displacement
indicative
shrinkage
occuring
measured
move
distance
equal
one-half
aligning
pass
weld joint
apparatus utilizes
beam welding
biasing device
electron beam
distance equal
welding operation
shrinking weld
carriage mounted
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