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Title: Gas tungsten arc welder

Abstract

A welder for automated closure of fuel pins by a gas tungsten arc process in which a rotating length of cladding is positioned adjacent a welding electrode in a sealed enclosure. An independently movable axial grinder is provided in the enclosure for refurbishing the used electrode between welds.

Inventors:
;
OSTI Identifier:
5322848
Application Number:
ON: DE84005929
Assignee:
EDB-84-027165
DOE Contract Number:
AC06-76FF02170
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; FBR TYPE REACTORS; FUEL PINS; CLOSURES; AUTOMATION; ELECTRODES; FUEL CANS; GAS TUNGSTEN-ARC WELDING; ARC WELDING; BREEDER REACTORS; EPITHERMAL REACTORS; FABRICATION; FAST REACTORS; FUEL ELEMENTS; JOINING; REACTOR COMPONENTS; REACTORS; WELDING; 050700* - Nuclear Fuels- Fuels Production & Properties; 210500 - Power Reactors, Breeding

Citation Formats

Christiansen, D.W., and Brown, W.F.. Gas tungsten arc welder. United States: N. p., Web.
Christiansen, D.W., & Brown, W.F.. Gas tungsten arc welder. United States.
Christiansen, D.W., and Brown, W.F.. . "Gas tungsten arc welder". United States. doi:.
@article{osti_5322848,
title = {Gas tungsten arc welder},
author = {Christiansen, D.W. and Brown, W.F.},
abstractNote = {A welder for automated closure of fuel pins by a gas tungsten arc process in which a rotating length of cladding is positioned adjacent a welding electrode in a sealed enclosure. An independently movable axial grinder is provided in the enclosure for refurbishing the used electrode between welds.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {},
month = {}
}
  • A welder for automated closure of fuel pins by a gas tungsten arc process in which a rotating length of cladding is positioned adjacent a welding electrode in a sealed enclosure. An independently movable axial grinder is provided in the enclosure for refurbishing the used electrode between welds.
  • A welder for automated closure of fuel pins by a gas tungsten arc process is claimed. A rotating length of cladding is positioned adjacent a welding electrode in a sealed enclosure. An independently movable axial grinder is provided in the enclosure for refurbishing the used electrode between welds.
  • A gas-tungsten arc welding method for joining together structures formed of aluminum alloy with these structures disposed contiguously to a heat-damagable substrate of a metal dissimilar to the aluminum alloy. The method of the present invention is practiced by diamond machining the fay surfaces of the aluminum alloy structures to provide a mirror finish thereon having a surface roughness in the order of about one microinch. The fay surfaces are aligned and heated sufficiently by the tungsten electrode to fuse the aluminum alloy contiguous to the fay surfaces to effect the weld joint. The heat input used to provide anmore » oxide-free weld is significantly less than that required if the fay surfaces were prepared by using conventional chemical and mechanical practices.« less
  • A gas-tungsten arc welding method for joining together structures formed of aluminum alloy with these structures disposed contiguously to a heat-damagable substrate of a metal dissimilar to the aluminum alloy. The method of the present invention is practiced by diamond machining the fay surfaces of the aluminum alloy structures to provide a mirror finish thereon having a surface roughness in the order of about one micro-inch. The fay surfaces are aligned and heated sufficiently by the tungsten electrode to fuse the aluminum alloy contiguous to the fay surfaces to effect the weld joint. The heat input used to provide anmore » oxide-free weld is significantly less than that required if the fay surfaces were prepared by using conventional chemical and mechanical practices.« less
  • An improved process for Gas Tungsten Arc welding maximizes the depth/width ratio of the weld pool by adding a sufficient amount of a surface active element to insure inward fluid flow, resulting in deep, narrow welds. The process is especially useful to eliminate variable weld penetration and shape in GTA welding of steels and stainless steels, particularly by using a sulfur-doped weld wire in a cold wire feed technique.