Patent US2145197A successfully refreshed from Google Patents.
Patent US4120440A successfully refreshed from Google Patents.
US4120440A
Expired / Lapsed
US
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Welding, a steel suitable for use therein
Assignee: British Steel PLC
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Filing: 1977-05-11
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Granted: 1978-10-17
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Expires: 1997-05-11
Abstract
Abstract A steel which contains up to 0.15% carbon, 0.5 to 1.5% manganese, 0.03 to 0.10% silicon, less than 0.2% molybdenum, up to 0.05 aluminum, 0.03 to 0.05% titanium and 0.002 to 0.008% boron is particularly suitable as a welding consumable, for example as an electrode for the submerged arc welding of high strength micro-alloyed structural steels. Especially when used with a basic flux, welds can be produced showing excellent notch toughness characteristics.
Inventors
- 👤 Philip R. Kirkwood
- 👤 Allan Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:37
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/002; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053; C22C38/14; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/12917; Y10T428/12924
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
50 words
A consumable welding wire for submerged arc welding under a basic flux, said wire consisting essentially of steel consisting essentially of Carbon 0.15 maximum Manganese: 0.5-1.5 Silicon: 0.03-0.10 Molybdenum: less than 0.2 Aluminium: 0.05 maximum Titanium: 0.03-0.05 Boron 0.002-0.008 Sulphur: 0.04 maximum Phosphorus: 0.04 maximum Iron and incidental impurities: Balance.
Claim 2
Dependent Claim
50 words
A consumable welding wire for submerged arc welding under a basic flux, said wire consisting essentially of steel consisting essentially of Carbon 0.15 maximum Manganese: 0.5-1.5 Silicon: 0.03-0.10 Molybdenum: less than 0.2 Aluminium: 0.05 maximum Titanium: 0.03-0.05 Boron 0.002-0.008 Sulphur: 0.04 maximum Phosphorus: 0.04 maximum Iron and incidental impurities: Balance.
Claim 3
Dependent Claim
21 words
A welding wire as claimed in claim 1 in which the carbon content of said steel is not more than 0.10%.
Claim 4
Dependent Claim
21 words
A welding wire as claimed in claim 1 in which the aluminium content of said steel is not more than 0.025%.
Claim 5
Dependent Claim
21 words
A welding wire as claimed in claim 1 in which the aluminium content of said steel is not more than 0.020%.
Claim 6
Dependent Claim
24 words
A welding wire as claimed in claim 1 in which the sulphur and phosphorus contents of said steel are each not more than 0.03%.
Claim 7
Dependent Claim
24 words
A welding wire as claimed in claim 1 in which uncombined boron of said steel is present in an amount of at least 0.0002%.
Claim 8
Dependent Claim
24 words
A welding wire as claimed in claim 1 provided with a thin coating of copper up to about 0.15% by weight of the wire.
Claim 9
Dependent Claim
26 words
In a method of welding steel the improvement comprising using as the welding consumable for producing a weldment a welding wire as claimed in claim 1.
Claim 10
Dependent Claim
26 words
In a method of submerged arc welding the improvement comprising melting a wire as claimed in claim 1 under a basic flux to provide the weldment.
Claim 11
Dependent Claim
17 words
A method of welding as claimed in claim 9 wherein the formed weld is subsequently stress relieved.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-16 | 1982-04-17 | 1982-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-16 | 1986-04-17 | 1986-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-16 | 1990-04-17 | 1990-10-17 | $7700.00 | Window Closed / Lapsed |