| 摘要 |
PROBLEM TO BE SOLVED: To provide a high speed TIG (Tungsten Inert-Gas) welding method with which heating with a welding arc only to the welding center part can be performed by preventing the diffusion of the welding arc heat and an undercut is not generated when the high speed TIG welding to a thin aluminum sheet is performed without using a backing material. SOLUTION: The aluminum having the chemical composition composed by wt% of≤0.11% silicon, 1.15-1.35% iron,≤0.01% copper, 0.40-0.60% manganese,≤0.003% magnesium,≤0.01% chromium,≤0.02% zinc,≤0.03% titanium and≤0.05% individual component and≤0.15% total content of the other component content except aluminum and the balance aluminum, is formed as a sheet-state or a foil-state having 0.1-1.2 mm thickness, and≥5 m/min welding speed and 105-135 ampere welding current value are applied. COPYRIGHT: (C)2005,JPO&NCIPI |
