US4552590A
Expired / Lapsed
US
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Ferro-sintered alloys
Assignee: Resonac Corp
•
Filing: 1983-08-12
•
Granted: 1985-11-12
•
Expires: 2003-08-12
Abstract
Abstract A ferro-sintered alloy having wear resistance at elevated temperatures comprising a matrix in which, on a weight basis, 25-75% of an alloying base A of the following composition is irregularly dispersed with 75-25% of an alloying base B of the following composition, the matrix having dispersed therein 3-15% of at least one of the following hard phases C and D, and optionally being impregnated in its pores with lead: -Base A Base B - Cr 2-4% Co 5.5-7.5% - Mo 0.2-0.4% Ni 0.5-3% - V 0.2-0.4% Mo 0.5-3% - C 0.6-1.2% C 0.6%-1.2% - Fe the remainder Fe the remainder -Hard phase C: 45-60% Co - 33-36% Mo. - and remainder Si -Hard phase D: 45-60% Fe - 33-36% Mo - and remainder Si.-
Inventors
- 👤 Tohru Nakata
- 👤 Hiroyuki Endo
- 👤 Masatoshi Harada
- 👤 Tadao Hayasaka
- 👤 Osamu Miyamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:37
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0278; C22C33/0207; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49298; Y10T29/49306; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216; Y10T428/12174
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
136 words
A ferro-sintered alloy having wear resistance at elevated temperatures, comprising a matrix in which 25 to 75 weight % of an alloying base A of the following composition is irregularly dispersed with 75 to 25 weight % of an alloying base B of the following composition, said matrix having 3 to 15 weight % of at least one of the following hard phases C and D dispersed therein: ______________________________________
Base A Base B
______________________________________
Cr 2˜4%
(by weight)
Co 5.5˜7.5%
(by weight)
Mo 0.2˜0.4%
(by weight)
Ni 0.5˜3%
(by weight)
V 0.2˜1.2%
(by weight)
Mo 0.5˜3%
(by weight)
C 0.6˜1.2%
(by weight)
C 0.6˜1.2%
(by weight)
Fe the remainder Fe the remainder
Hard phase C:
45˜69% Co-- 33˜36% Mo--and remainder Si Alloy (by weight)
Hard phase D:
48˜60% Fe--33˜36% Mo--and remainder Si alloy (by
______________________________________
weight).
Claim 2
Dependent Claim
136 words
A ferro-sintered alloy having wear resistance at elevated temperatures, comprising a matrix in which 25 to 75 weight % of an alloying base A of the following composition is irregularly dispersed with 75 to 25 weight % of an alloying base B of the following composition, said matrix having 3 to 15 weight % of at least one of the following hard phases C and D dispersed therein: ______________________________________
Base A Base B
______________________________________
Cr 2˜4%
(by weight)
Co 5.5˜7.5%
(by weight)
Mo 0.2˜0.4%
(by weight)
Ni 0.5˜3%
(by weight)
V 0.2˜1.2%
(by weight)
Mo 0.5˜3%
(by weight)
C 0.6˜1.2%
(by weight)
C 0.6˜1.2%
(by weight)
Fe the remainder Fe the remainder
Hard phase C:
45˜69% Co-- 33˜36% Mo--and remainder Si Alloy (by weight)
Hard phase D:
48˜60% Fe--33˜36% Mo--and remainder Si alloy (by
______________________________________
weight).
Claim 3
Dependent Claim
144 words
A ferro-sintered alloy having wear resistance at elevated temperatures, comprising a matrix in which 25 to 75 weight % of an alloying base A of the following composition is irregularly dispersed with 75 to 25 weight % of an alloying base B of the following composition, said matrix having 3 to 15 weight % of at least one of the following hard phases C and D dispersed therein; and being impregnated in its pores with lead ______________________________________
Base A Base B
______________________________________
Cr 2˜4%
(by weight)
Co 5.5˜7.5%
(by weight)
Mo 0.2˜0.4%
(by weight)
Ni 0.5˜3%
(by weight)
V 0.2˜1.2%
(by weight)
Mo 0.5˜3%
(by weight)
C 0.6˜1.2%
(by weight)
C 0.6˜1.2%
(by weight)
Fe the remainder Fe the remainder
Hard phase C:
45˜69% Co-- 33˜36% Mo--and remainder Si Alloy (by weight)
Hard phase D:
48˜60% Fe--33˜36% Mo--and remainder Si alloy (by
______________________________________
weight).
Claim 4
Dependent Claim
144 words
A ferro-sintered alloy having wear resistance at elevated temperatures, comprising a matrix in which 25 to 75 weight % of an alloying base A of the following composition is irregularly dispersed with 75 to 25 weight % of an alloying base B of the following composition, said matrix having 3 to 15 weight % of at least one of the following hard phases C and D dispersed therein; and being impregnated in its pores with lead ______________________________________
Base A Base B
______________________________________
Cr 2˜4%
(by weight)
Co 5.5˜7.5%
(by weight)
Mo 0.2˜0.4%
(by weight)
Ni 0.5˜3%
(by weight)
V 0.2˜1.2%
(by weight)
Mo 0.5˜3%
(by weight)
C 0.6˜1.2%
(by weight)
C 0.6˜1.2%
(by weight)
Fe the remainder Fe the remainder
Hard phase C:
45˜69% Co-- 33˜36% Mo--and remainder Si Alloy (by weight)
Hard phase D:
48˜60% Fe--33˜36% Mo--and remainder Si alloy (by
______________________________________
weight).
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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) | 1988-11-11 | 1989-05-13 | 1989-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-11 | 1993-05-13 | 1993-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-11 | 1997-05-13 | 1997-11-12 | $7700.00 | Window Closed / Lapsed |