US4561888A
Expired / Lapsed
US
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Welding wire for use in submerged arc welding of Cr-Mo steels
Assignee: KOBE SEIKO SHO WAKINOHAMA-CHO 1-CHOME CHUO-KU KOBE 651 JAPAN KK
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Filing: 1983-10-25
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Granted: 1985-12-31
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Expires: 2003-10-25
Abstract
Abstract A welding wire for use in submerged arc welding of Cr-Mo steels comprising less than 0.25% C, less than 0.60% Si, 0.15-1.50% Mn, 0.50-10.0% Cr and 0.40-2.50% Mo on the basis of the weight ratio comprises 0.05-0.19% C, less than 0.60% Si, less than 1.6% Mn, 0.50-10.5% Cr and 0.30-2.50% Mo as the basic elements boron and nitrogen added thereto as the essential elements each in the range of 0.0001-0.25% B and 0.010-0.040% N; and at least one of titanium, zirconium and aluminum further incorporated therein each in the range of 0.01-0.30% Ti, 0.05-0.30% Zr and less than 0.40% Al, while being adjusting such that the sum of the elements: Ti+Al+Zr+10B lies within a range between 0.003-0.40% on the basis of the weight ratio. The welding wire of the novel composition can provide weld alloy steels with high strength and excellent toughness even at low temperature.
Inventors
- 👤 Naoki Okuda
- 👤 Minoru Yamada
- 👤 Fumito Yoshino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:02
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053; B23K35/308
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
131 words
A welding wire for use in submerged arc welding of Cr-Mo steels comprising, in weight percent, less than 0.25% C, less than 0.60% Si, 0.15-1.50% Mn, 0.50-10.0% Cr, 0.40-2.50% Mo and the balance Fe, Wherein the welding wire consists essentially of, in weight percent, 0.05-0.19% C, less than 0.60% Si, less than 1.6% Mn, 1.43-10.5% Cr and 0.30-2.50% Mo as the basic elements, Boron and nitrogen being incorporated to said wire as essential elements each in the range of 0.0001-0.025% B and 0.010-0.040% N; and at least one of titanium, zirconium and aluminum further incorporated therein each in the range of 0.01-0.30% Ti, 0.05-0.30% Zr and less than 0.40% Al, while being adjusted such that the sum of the elements Ti+Al+Zr+10B lies within a range between 0.003-0.40% and, the balance Fe.
Claim 2
Dependent Claim
131 words
A welding wire for use in submerged arc welding of Cr-Mo steels comprising, in weight percent, less than 0.25% C, less than 0.60% Si, 0.15-1.50% Mn, 0.50-10.0% Cr, 0.40-2.50% Mo and the balance Fe, Wherein the welding wire consists essentially of, in weight percent, 0.05-0.19% C, less than 0.60% Si, less than 1.6% Mn, 1.43-10.5% Cr and 0.30-2.50% Mo as the basic elements, Boron and nitrogen being incorporated to said wire as essential elements each in the range of 0.0001-0.025% B and 0.010-0.040% N; and at least one of titanium, zirconium and aluminum further incorporated therein each in the range of 0.01-0.30% Ti, 0.05-0.30% Zr and less than 0.40% Al, while being adjusted such that the sum of the elements Ti+Al+Zr+10B lies within a range between 0.003-0.40% and, the balance Fe.
Claim 3
Dependent Claim
17 words
The welding wire as defined in claim 1, wherein 0.1-1.2% Ni is added to the welding wire.
Claim 4
Dependent Claim
31 words
The welding wire as defined in claim 1 or 2, wherein at least one of 0.01-0.3% V and 0.01-0.3% Nb are added and the sum of V+Nb is adjusted to 0.01-0.4%.
Claim 5
Dependent Claim
12 words
The welding wire as defined in claim 1 which contains 0.05-0.15% C.
Claim 6
Dependent Claim
14 words
The welding wire as defined in claim 1 which contains less than 0.20% Si.
Claim 7
Dependent Claim
12 words
The welding wire as defined in claim 1 which contains 0.4-1.6% Mn.
Claim 8
Dependent Claim
12 words
The welding wire as defined in claim 1 which contains 1.43-9.5% Cr.
Claim 9
Dependent Claim
12 words
The welding wire as defined in claim 1 which contains 0.4-2.0% Mo.
Claim 10
Dependent Claim
12 words
The welding wire as defined in claim 1 which contains 0.0003-0.01% B.
Claim 11
Dependent Claim
12 words
The welding wire as defined in claim 1 which contains 0.010-0.035% N.
Claim 12
Dependent Claim
12 words
The welding wire as defined in claim 1 which contains 0.02-0.30% Ti.
Claim 13
Dependent Claim
12 words
The welding wire as defined in claim 1 which contains 0.05-0.20% Al.
Claim 14
Dependent Claim
20 words
The welding wire as defined in claim 1 in which the sum of Ti+Al+Zr+10B lies within a range between 0.003-0.30%.
References Cited (Backward Citations)
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Cited
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Cited
US3664830A
Cited
US3847600A
Cited
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Cited
JPS5550023A
Cited
US4461811A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |