| 摘要 |
An upward gas-shielded arc welding method applied to upward angle welding operation where welding feet are less than 5.0 mm is disclosed. The upward gas-shielded arc welding method is high in arc stability and can obtain a good welding bead shape through a single welding layer. The upward gas-shielded arc welding method employs a gas-shielded arc welding titanium dioxide flux-cored welding wire. The upward gas-shielded arc welding method is characterized in that the gas-shielded arc welding titanium dioxide flux-cored welding wire containing 2:4.5-8.0 mass% of Tio relative to the total mass of the welding wire is adopted under the welding condition that a welding torch inclination angle ranges between 55 degrees to 85 degrees, a welding current ranges between 100 A and 180 A, and welding wire protrusion length ranges between 5 mm to 30 mm. |
