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Title: Method and device for reducing overpenetration at the start of plasma arc welds

Abstract

A shim for improving plasma arc weld quality has ends tapered at about 25.degree. and notches at each end roughly centered over the corner between the tapered ends and main body of the shim. The improved shim allows lower starting plasma arc heat input and reduces the occurrence of sagging, or overpenetration, of the weld.

Inventors:
 [1];  [2];  [3]
  1. (Jackson Township, Stark County, OH)
  2. (Bedford County, VA)
  3. (Washington Township, Stark County, OH)
Issue Date:
Research Org.:
BABCOCK & WILCOX CO
OSTI Identifier:
871666
Patent Number(s):
5773786
Assignee:
McDermott Technology, Inc. (New Orleans, LA) OSTI
DOE Contract Number:  
AC11-95PN38196
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; device; reducing; overpenetration; start; plasma; welds; shim; improving; weld; quality; tapered; 25; degree; notches; roughly; centered; corner; main; improved; allows; starting; heat; input; reduces; occurrence; sagging; heat input; weld quality; /219/

Citation Formats

Sanders, John M., Lehmann, John M., and Ryan, Patrick M. Method and device for reducing overpenetration at the start of plasma arc welds. United States: N. p., 1998. Web.
Sanders, John M., Lehmann, John M., & Ryan, Patrick M. Method and device for reducing overpenetration at the start of plasma arc welds. United States.
Sanders, John M., Lehmann, John M., and Ryan, Patrick M. Thu . "Method and device for reducing overpenetration at the start of plasma arc welds". United States. https://www.osti.gov/servlets/purl/871666.
@article{osti_871666,
title = {Method and device for reducing overpenetration at the start of plasma arc welds},
author = {Sanders, John M. and Lehmann, John M. and Ryan, Patrick M.},
abstractNote = {A shim for improving plasma arc weld quality has ends tapered at about 25.degree. and notches at each end roughly centered over the corner between the tapered ends and main body of the shim. The improved shim allows lower starting plasma arc heat input and reduces the occurrence of sagging, or overpenetration, of the weld.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

Patent:

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