Oxygen and Nitrogen Contamination during Arc Welding.

Abstract

The sources, mechanisms, and expected levels of oxygen and nitrogen contamination during gas tungsten arc, gas metal arc, shielded metal arc, self-shielded metal arc, and submerged arc welding are reviewed. Calculations indicating the importance of decomposition of SiO2 into silicon monoxide and oxygen are presented, indicating that silicon transfer between the slag and metal occurs by a gas-metal rather than a slag-metal reaction mechanism. A model suggesting that arc stabilizing additions to fluxes should provide volatile subspecies upon heating is also discussed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1978
Accession Number
ADA063857

Entities

People

  • T. W. Eagar

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Absorption
  • Air Pollution
  • Arc Welding
  • Arc Welds
  • Chemistry
  • Contamination
  • Elements
  • Engineering
  • Gases
  • Materials
  • Materials Science
  • Metals
  • Plasma Jets
  • Submerged Arc Welding
  • Weld Metal
  • Welding
  • Welds

Fields of Study

  • Materials science

Readers

  • Combustion science or combustion engineering.
  • Metallurgy