Method and apparatus for determining weldability of thin sheet metal
This patent describes an apparatus for evaluating the hot-cracking sensitivity of a sheet of metal during welding thereof by changes in a preselected stress applied on the sheet of metal prior to the welding to determine weldability of the metal. It comprises: a base, a first jaw support means secured to a planar surface on the base, second jaw support means supported on the planar surface of the base and movable thereon with respect to the first jaw support means, grip means carried by the first and second jaw support means for securing a sheet of metal to be autogenously welded thereacross between the first and second jaw means along a plane coplanar with the planar surface, load inducing means coupled to the second jaw support means for urging the second jaw support means away from the first jaw support means to stress the sheet of metal in a direction transverse to the direction of welding of the sheet of metal, adjusting means associated with the load inducing means for applying a preselected stress on the sheet of metal prior to welding, and load cell means coupled to the load inducing means for providing a signal indicative of change sin the preselected stress during welding of the sheet of metal.
- Assignee:
- Martin Marietta Energy Systems, Inc., Oak Ridge, TN
- Patent Number(s):
- US 4763521; A
- Application Number:
- PPN: US 6-846529A
- OSTI ID:
- 5636098
- Country of Publication:
- United States
- Language:
- English
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