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US5403371A
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Iron-based powder, component made thereof, and method of making the component
Assignee: Hoganas AB
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Filing: 1991-05-10
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Granted: 1995-04-04
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Expires: 2011-05-10
Abstract
Abstract PCT No. PCT/SE91/00331 Sec. 371 Date Nov. 10, 1992 Sec. 102(e) Date Nov. 10, 1992 PCT Filed May 10, 1991 PCT Pub. No. WO91/18123 PCT Pub. Date Nov. 28, 1991.An iron-based powder for making wear-resisting and heat-resisting components by compacting and sintering consists of, in addition to Fe, 3-15% by weight of Mo and/or 3-20% by weight of W, the total amount of Mo+W being in the range off 3-20% by weight; 0.2-1.0% by weight of P; 0.5-1.5% by weight of C. A component is powder-metallurgically made of this iron-based powder by compacting the powder into the desired shape and sintering the compact at a temperature below about 1150 DEG C.
Inventors
- 👤 Per Engdahl
- 👤 Dragan Spasic
- 👤 Ralf Johansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:02
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0278; C22C33/0207; C22C33/0214
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
68 words
Iron-based powder for making wear-resisting and heat-resisting components by compacting and sintering, consisting essentially of: Fe, 3-15% by weight Mo and/or 3-20% by weight of W, the total amount of Mo+W being in the range of 3-20% by weight; 0.2-1.0% by weight of P; 0.5-1.5% by weight of C, and whereby said powder contains Cr and/or V in a total amount which is smaller than 2% by weight.
Claim 2
Dependent Claim
68 words
Iron-based powder for making wear-resisting and heat-resisting components by compacting and sintering, consisting essentially of: Fe, 3-15% by weight Mo and/or 3-20% by weight of W, the total amount of Mo+W being in the range of 3-20% by weight; 0.2-1.0% by weight of P; 0.5-1.5% by weight of C, and whereby said powder contains Cr and/or V in a total amount which is smaller than 2% by weight.
Claim 3
Dependent Claim
17 words
The powder as claimed in claim 1 wherein phosphorous is in the form of Fe 3 P.
Claim 4
Dependent Claim
23 words
The powder as claimed in claim 1 wherein said powder contains Cr and/or V in a total amount smaller than 1% by weight.
Claim 5
Dependent Claim
37 words
The powder as claimed in claim 1, wherein said powder essentially consists of 5-14% by weight of Mo and/or 5-16% by weight of W, the total amount of Mo+W being in the range of 5-16% by weight.
Claim 6
Dependent Claim
38 words
A method of powder-metallurgically making iron-based components, comprising the steps of using a powder set forth in claim 1, compacting said powder into a desired shape, and sintering the compacted powder at a temperature below about 1150° C.
Claim 7
Dependent Claim
44 words
The method as claimed in claim 5, characterized in that first powder is made, which consists essentially of Fe, Mo and/or W, and optionally C and/or P, and that the powder made is mixed with a lubricant and, optionally, graphite and/or P before compacting.
Claim 8
Dependent Claim
60 words
Powder-metallurgically manufactured component consisting essentially of: Fe, 3-15% by weight of Mo and/or 3-20% by weight of W, the total amount of Mo+W being in the range of 3-20% by weight; 0.2-1.0% by weight of P; 0.5-1.5% by weight of C, and whereby said powder contains Cr and/or V in a total amount which is smaller than 2% by weight.
Claim 9
Dependent Claim
60 words
Powder-metallurgically manufactured component consisting essentially of: Fe, 3-15% by weight of Mo and/or 3-20% by weight of W, the total amount of Mo+W being in the range of 3-20% by weight; 0.2-1.0% by weight of P; 0.5-1.5% by weight of C, and whereby said powder contains Cr and/or V in a total amount which is smaller than 2% by weight.
Claim 10
Dependent Claim
26 words
The powder metallurgical manufactured component as claimed in claim 7 wherein said powder contains Cr and/or V in a total amount smaller than 1% by weight.
Claim 11
Dependent Claim
20 words
The powder metallurgical manufactured component as claimed in claim 7 wherein phosphorous is in the form of Fe 3 P.
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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) | 1998-04-03 | 1998-10-03 | 1999-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-03 | 2002-10-03 | 2003-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-03 | 2006-10-03 | 2007-04-04 | $7700.00 | Window Closed / Lapsed |