gas-shielded arc welding

gas-shielded arc welding

[′gas ‚shēl·dəd ′ärk ‚weld·iŋ]
(metallurgy)
Use of a gas atmosphere to shield the molten metal from air in arc welding.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.