Title:
SUBMERGED ARC WELDING METHOD FOR HIGH STRENGTH CR-MO STEEL AND WELD METAL
Document Type and Number:
Japanese Patent JP3258190
Kind Code:
B2
Abstract:
PURPOSE: To provide a submerged arc welding method for high strength Cr--Mo steel capable of the weld metal with excellent characteristics.
CONSTITUTION: In the submerged arc welding method where the high strength Cr-Mo steel containing, by weight, 2.00-3.25% Cr, 0.90-1.10% Mo, and V as the indispensable constituents is submerged arc welded using the solid wire and the bond flux, the welding heat input is 20-50kJ/cm, and the wire has the composition consisting of 0.09-0.19% C, ≤0.30% Si, 0.70-1.60% Mn, 2.00-3.80% Cr, and 0.90-1.20% Mo. The flux contains 5-20% SiO2, 20-40% MgO, 5-25% Al2O3, 1.5-11% metallic fluoride (in terms of F), 3-15% metallic carbide (in terms of CO2). The welding is achieved so that the weld metal may have the composition consisting of 0.08-0.15% C, 0.05-0.30% Si, 0.50-1.30% Mn, ≤0.010% P, 0.10-0.50% V, ≤0.40% Ni, ≤0.012% Ti, 0.001-0.015% B, ≤0.015% N, and 0.0035-0.065% O.
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Inventors:
Goto Akinobu
Takeshi Nakagawa
Takeshi Nakagawa
Application Number:
JP3558095A
Publication Date:
February 18, 2002
Filing Date:
February 23, 1995
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
B23K9/18; B23K9/23; B23K35/30; B23K35/362; C22C38/00; C22C38/24; (IPC1-7): B23K35/362; B23K9/18; B23K35/30
Domestic Patent References:
| JP62259695A | ||||
| JP63238978A | ||||
| JP2182378A | ||||
| JP1271096A | ||||
| JP6328292A |
Attorney, Agent or Firm:
Masanori Fujimaki
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