To provide a flux-cored wire for gas shield arc welding which is excellent in high temperature crack resistance for an initial pass of one-side joint welding, and welding workability such as slag detachability and metal drop resistance in an upward and standing position welding, and is excellent in mechanical performance of a weld metal.
The flux-cored wire for gas shield arc welding is characterized in that it contains, by mass% to the total mass of the wire, C:0.04-0.09%, Si: 0.3-0.6%, Mn: 2.5-3.1%, Al: 0.1-0.4%, Mg: 0.3-0.6%, TiO2: 5.1-6.5%, SiO2: 0.3-0.7%, ZrO2: 0.1-0.5%, Al2O3: 0.2-0.5%, Na2O and K2O in total : 0.10-0.25%, fluorine compounds in terms of F: 0.03-0.08%, and iron powders: 2.0-5.0%, and further contains a limited range of P: ≤0.015%, S: ≤0.010%, B: ≤0.0005%, Bi: ≤0.0005%, and iron oxide in terms of FeO: ≤0.09%.
KAMATA MASAO
NAGASHIMA SHUSHIRO
CHIBA RYUTARO
| JP2006289404A | 2006-10-26 | |||
| JP2011025298A | 2011-02-10 | |||
| JP2009148774A | 2009-07-09 | |||
| JP2008087044A | 2008-04-17 | |||
| JP2010253511A | 2010-11-11 | |||
| JPS5639193A | 1981-04-14 |
田中 久喬