US4648903A
Expired / Lapsed
US
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Iron base sintered, wear-resistant materials and method for producing the same
Assignee: Resonac Corp
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Filing: 1985-02-28
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Granted: 1987-03-10
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Expires: 2005-02-28
Abstract
Abstract An iron base sintered, wear-resistant material consisting substantially of, in weight ratio, 3-25% of Cr, 0.1-2% of P, 0.5-3% of C, 1-13% of at least two elements selected from the group consisting of 0.5-7% Mo, 0.1-8% W, 0.1-3V and 0.5-2% Ni, 10-25% of Cu and the balance being essentially Fe.
Inventors
- 👤 Yutaka Ikenoue
- 👤 Hiroyuki Endoh
- 👤 Kei Ishii
- 👤 Keitaro Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:47
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0278; C22C33/0285
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
49 words
A iron base sintered, wear-resistant powder compact, consisting essentially of: 10-25% of Cu, 3-25% of Cr, 0.1-2% of P, 0.5-3% of C, 1-13% of at least two elements selected from the group consisting of 0.5-7% Mo, 0.1-8% W, 0.1-3% V and 0.5-2% Ni, and the balance being essentially Fe.
Claim 2
Dependent Claim
49 words
A iron base sintered, wear-resistant powder compact, consisting essentially of: 10-25% of Cu, 3-25% of Cr, 0.1-2% of P, 0.5-3% of C, 1-13% of at least two elements selected from the group consisting of 0.5-7% Mo, 0.1-8% W, 0.1-3% V and 0.5-2% Ni, and the balance being essentially Fe.
Claim 3
Dependent Claim
23 words
The wear-resistant powder compact as defined in claim 1, in which said copper is substituted with the same amount of a copper alloy.
Claim 4
Dependent Claim
18 words
The wear-resistant powder compact as defined in claim 2, in which said copper alloy is a Cu-Sn alloy.
Claim 5
Dependent Claim
18 words
The wear-resistant powder compact as defined in claim 2, in which said copper alloy is a Cu-Ni alloy.
Claim 6
Dependent Claim
31 words
The compact of claim 1, consisting essentially of: 10-25% of Cu, 3-25% of Cr, 0.1-2% of P, 0.5-3% of C, 0.1-3% V and 0.5-2% Ni, and the balance being essentially Fe.
Claim 7
Dependent Claim
82 words
A process for the production of iron base sintered, wear-resistant alloys, in which 10-25 weight % of copper or copper alloy powders and 0.5-3 weight % of carbon powders are added to the powders of an alloy consisting essentially of, in weight ratio, 3-25% of Cr, 0.1-2% of P, 1-13% of at least two elements selected from the group consisting of 0.5-7% Mo, 0.1-8% W, 0.1-3% V and 0.5-2% Ni and the balance being essentially Fe, and the resulting powders is sintered.
Claim 8
Dependent Claim
82 words
A process for the production of iron base sintered, wear-resistant alloys, in which 10-25 weight % of copper or copper alloy powders and 0.5-3 weight % of carbon powders are added to the powders of an alloy consisting essentially of, in weight ratio, 3-25% of Cr, 0.1-2% of P, 1-13% of at least two elements selected from the group consisting of 0.5-7% Mo, 0.1-8% W, 0.1-3% V and 0.5-2% Ni and the balance being essentially Fe, and the resulting powders is sintered.
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US3986867A
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US4268309A
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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) | 1990-03-09 | 1990-09-08 | 1991-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-09 | 1994-09-08 | 1995-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-09 | 1998-09-08 | 1999-03-10 | $7700.00 | Window Closed / Lapsed |