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Title: Gas shielding apparatus

Abstract

An apparatus is disclosed for preventing oxidation by uniformly distributing inert shielding gas over the weld area of workpieces such as pipes being welded together. The apparatus comprises a chamber and a gas introduction element. The chamber has an annular top wall, an annular bottom wall, an inner side wall and an outer side wall connecting the top and bottom walls. One side wall is a screen and the other has a portion defining an orifice. The gas introduction element has a portion which encloses the orifice and can be one or more pipes. The gas introduction element is in fluid communication with the chamber and introduces inert shielding gas into the chamber. The inert gas leaves the chamber through the screen side wall and is dispersed evenly over the weld area. 3 figs.

Inventors:
Issue Date:
OSTI Identifier:
7249455
Patent Number(s):
4562334 A
Application Number:
PPN: US 6-617652
Assignee:
Dept. of Energy, Washington, DC (United States)
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Resource Relation:
Patent File Date: 5 Jun 1984
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; WELDING MACHINES; INERT ATMOSPHERE; DESIGN; SHIELDED METAL-ARC WELDING; SHIELDING; ARC WELDING; FABRICATION; JOINING; WELDING; 360101* - Metals & Alloys- Preparation & Fabrication

Citation Formats

Brandt, D. Gas shielding apparatus. United States: N. p., 1985. Web.
Brandt, D. Gas shielding apparatus. United States.
Brandt, D. Tue . "Gas shielding apparatus". United States.
@article{osti_7249455,
title = {Gas shielding apparatus},
author = {Brandt, D},
abstractNote = {An apparatus is disclosed for preventing oxidation by uniformly distributing inert shielding gas over the weld area of workpieces such as pipes being welded together. The apparatus comprises a chamber and a gas introduction element. The chamber has an annular top wall, an annular bottom wall, an inner side wall and an outer side wall connecting the top and bottom walls. One side wall is a screen and the other has a portion defining an orifice. The gas introduction element has a portion which encloses the orifice and can be one or more pipes. The gas introduction element is in fluid communication with the chamber and introduces inert shielding gas into the chamber. The inert gas leaves the chamber through the screen side wall and is dispersed evenly over the weld area. 3 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {12}
}