Displaced electrode process for welding
A method is described for the butt-welding of a relatively heavy mass to a relatively small mass such as a thin-wall tube. In butt-welding heat is normally applied at the joint between the two pieces which are butt-welded together. The application of heat at the joint results in overheating the tube which causes thinning of the tube walls and porosity in the tube material. This is eliminated by displacing the welding electrode away from the seam toward the heavier mass so that heat is applied to the heavy mass and not at the butt seam. Examples of the parameters used in welding fuel rods are given. The cladding and end plugs were made of Zircalloy. The electrode used was of 2 percent thoriated tungsten. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-33-009811
- Assignee:
- to U.S. Energy Research and Development Administration
- Patent Number(s):
- PAT-APPL-490,446.; US 3902038
- OSTI ID:
- 4124450
- Resource Relation:
- Patent File Date: 1974 Jul 22; Other Information: B23K31/06. Orig. Receipt Date: 30-JUN-76
- Country of Publication:
- United States
- Language:
- English
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