Patent US4446196A successfully refreshed from Google Patents.
US4446196A
Expired / Lapsed
US
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Hard facing composition for iron base alloy substrate using VC, W, Mo, Mn, Ni and Cu and product
Assignee: US TUNGSTEN Corp A CORP OF
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Filing: 1982-06-28
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Granted: 1984-05-01
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Expires: 2002-06-28
Abstract
Abstract Method for hard facing iron or iron base alloy substrates using as a hard facing material a solid composition consisting essentially of grains of vanadium carbide having in solid solution from about 10 to 50% by weight tungsten, and containing from about 0.5 to 5% by weight manganese and 0 to 3% by weight copper in the grain boundaries.
Inventors
- 👤 Harry J. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:06
CPC Classifications
C; C23; C23C; C23C30/00; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/327; B23K35/02; B23K35/0255; B23K35/0261; B23K35/0266; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12097; Y10T428/12104; Y10T428/12111; Y10T428/12139; Y10T428/12146; Y10T428/12493; Y10T428/12771; Y10T428/12778
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
99 words
In a method for hard facing a surface of an iron or iron base alloy substrate by forming a bond between said surface and a hard facing material, the improvement which comprises employing as a hard facing material a composition consisting essentially of grains of vanadium carbide having in solid solution from about 10 to 50% by weight tungsten and from about 1 to 4% by weight molybdenum, and containing from about 0.5 to 5% by weight manganese, from about 1 to 3% by weight nickel and from about 1 to 5% by weight copper in the grain boundaries.
Claim 2
Dependent Claim
99 words
In a method for hard facing a surface of an iron or iron base alloy substrate by forming a bond between said surface and a hard facing material, the improvement which comprises employing as a hard facing material a composition consisting essentially of grains of vanadium carbide having in solid solution from about 10 to 50% by weight tungsten and from about 1 to 4% by weight molybdenum, and containing from about 0.5 to 5% by weight manganese, from about 1 to 3% by weight nickel and from about 1 to 5% by weight copper in the grain boundaries.
Claim 3
Dependent Claim
25 words
A method according to claim 1 in which said hard facing composition contains from about 1 to 3% by weight manganese in the grain boundaries.
Claim 4
Dependent Claim
16 words
A method according to claim 1 in which said hard facing composition is in particulated form.
Claim 5
Dependent Claim
19 words
A method according to claim 1 in which said hard facing composition is a sintered material in particulated form.
Claim 6
Dependent Claim
92 words
A hard faced metal surface formed by providing molten iron or iron base alloy on a portion of iron or iron base alloy metal substrate, applying to the molten metal a solid composition consisting essentially of grains of vanadium carbide having in solid solution from about 10 to 50% by weight tungsten and from about 1 to 4% by weight molybdenum, and containing from about 0.5 to 5% by weight manganese, from about 1 to 3% by weight nickel and from about 1 to 5% by weight copper in the grain boundaries.
Claim 7
Dependent Claim
92 words
A hard faced metal surface formed by providing molten iron or iron base alloy on a portion of iron or iron base alloy metal substrate, applying to the molten metal a solid composition consisting essentially of grains of vanadium carbide having in solid solution from about 10 to 50% by weight tungsten and from about 1 to 4% by weight molybdenum, and containing from about 0.5 to 5% by weight manganese, from about 1 to 3% by weight nickel and from about 1 to 5% by weight copper in the grain boundaries.
Claim 8
Dependent Claim
89 words
A hard facing rod comprising a metal sheath consisting essentially of a material selected from the group consisting of iron, steel, aluminum and copper and containing a hard facing composition consisting essentially of grains of vanadium carbide having in solid solution from about 10 to 50% by weight tungsten and from about 1 to 4% by weight molybdenum, and containing from about 0.5 to 5% by weight manganese, from about 1 to 3% by weight nickel and from about 1 to 5% by weight copper in the grain boundaries.
Claim 9
Dependent Claim
89 words
A hard facing rod comprising a metal sheath consisting essentially of a material selected from the group consisting of iron, steel, aluminum and copper and containing a hard facing composition consisting essentially of grains of vanadium carbide having in solid solution from about 10 to 50% by weight tungsten and from about 1 to 4% by weight molybdenum, and containing from about 0.5 to 5% by weight manganese, from about 1 to 3% by weight nickel and from about 1 to 5% by weight copper in the grain boundaries.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |