US4177324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hard facing of metal substrates using material containing V, W, Mo, C
Assignee: US TUNGSTEN Corp A CORP OF
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Filing: 1978-06-30
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Granted: 1979-12-04
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Expires: 1998-06-30
Abstract
Abstract Hard-facing of iron and iron base alloy substrates is disclosed using a hard facing material in the form of granules consisting essentially of grains of chemically combined vanadium, tungsten, molybdenum, and carbon bonded by a binder metal of nickel-molybdenum alloy.
Inventors
- 👤 Harry J. Brown
- 👤 Kuldip S. Chopra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:49
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/327; C; C22; C22C; C22C29/00; C22C29/02; C22C29/06; C23; C23C; C23C4/00; C23C4/04; C23C4/06; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/932; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12576; Y10T428/12771; Y10T428/12861; Y10T428/12937; Y10T428/12944
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 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 hard-facing material solid particles consisting essentially of grains of vanadium carbide having in solid solution from about 10 to 50% by weight tungsten and about 1 to 4% by weight molybdenum and having about 1 to 4% by weight of binder metal between said grains, said binder metal consisting essentially of 90 to 99.98% nickel and 0.02 to 10% molybdenum.
Claim 2
Dependent Claim
93 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 hard-facing material solid particles consisting essentially of grains of vanadium carbide having in solid solution from about 10 to 50% by weight tungsten and about 1 to 4% by weight molybdenum and having about 1 to 4% by weight of binder metal between said grains, said binder metal consisting essentially of 90 to 99.98% nickel and 0.02 to 10% molybdenum.
Claim 3
Dependent Claim
91 words
A hard faced metal surface formed by providing molten iron or iron base alloy on a portion of an 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 about 1 to 4% by weight molybdenum and having about 1 to 4% by weight of binder metal between said grains, said binder metal consisting essentially of about 90 to 99.98% nickel and 0.02 to 10% molybdenum.
Claim 4
Dependent Claim
91 words
A hard faced metal surface formed by providing molten iron or iron base alloy on a portion of an 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 about 1 to 4% by weight molybdenum and having about 1 to 4% by weight of binder metal between said grains, said binder metal consisting essentially of about 90 to 99.98% nickel and 0.02 to 10% molybdenum.
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) | 1982-12-03 | 1983-06-04 | 1983-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-03 | 1987-06-04 | 1987-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-03 | 1991-06-04 | 1991-12-04 | $7700.00 | Window Closed / Lapsed |