SHIELDING GAS FOR WELDING

摘要

PROBLEM TO BE SOLVED: To provide a shielding gas with a new composition, which gas is low in a running cost and can show a high welding performance. SOLUTION: The shielding gas is used for gas shielded arc welding for mild steel and low alloy steel. The shielding gas is a two-composition mixed gas of nitrogen gas and carbon dioxide gas. The mixed gas contains 6-70 vol.% of nitrogen gas and the balance being carbon dioxide gas. COPYRIGHT: (C)2006,JPO&NCIPI