US4596692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for forming a wear-resistant layer on a substrate
Assignee: Mazda Motor Corp
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Filing: 1985-02-19
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Granted: 1986-06-24
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Expires: 2005-02-19
Abstract
Abstract A process for forming a wear-resistant, sintered layer on an iron based substrate which comprises steps of providing a first alloy sheet containing 94 to 99 weight % of Fe-Cr type alloy particles and 6 to 1 weight % of acryl binder and a second alloy sheet containing 94 to 99 weight % of eutectic alloy particles and 6 to 1 weight % of acryl binder, placing the first and second alloy sheets in a superposed condition on the substrate, and heating in a non-oxidating atmosphere to a temperature which is higher than a solidus temperature of the eutectic alloy but lower than a solidus temperature of the Fe-Cr type alloy.
Inventors
- 👤 Tsuyoshi Morishita
- 👤 Sigemi Osaki
- 👤 Yasuhumi Kawado
- 👤 Yukio Shimizu
- 👤 Toshiharu Konishi
- 👤 Takahumi Sakuramoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:12
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0278; B; B22; B22F; B22F7/00; B22F7/02; B22F7/04; C23; C23C; C23C24/00; C23C24/08; C23C24/10; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/1209; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12931; Y10T428/12951; Y10T428/12958
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
109 words
Process for forming a sintered layer on a metallic substrate comprising steps of providing on a surface of a metallic substrate a particulate alloy layer comprising a first lamina containing 94 to 99 weight % of Fe-Cr type alloy particles and 6 to 1 weight % of acrylic binder, superimposing on said first lamina a second lamina containing 94 to 99 weight % of eutectic alloy particles and 6 to 1 weight % of acryl binder, and heating said substrate in a non-oxidating atmosphere to a temperature which is higher than a solidus temperature of the eutectic alloy but lower than a solidus temperature of the Fe-Cr type alloy.
Claim 2
Dependent Claim
109 words
Process for forming a sintered layer on a metallic substrate comprising steps of providing on a surface of a metallic substrate a particulate alloy layer comprising a first lamina containing 94 to 99 weight % of Fe-Cr type alloy particles and 6 to 1 weight % of acrylic binder, superimposing on said first lamina a second lamina containing 94 to 99 weight % of eutectic alloy particles and 6 to 1 weight % of acryl binder, and heating said substrate in a non-oxidating atmosphere to a temperature which is higher than a solidus temperature of the eutectic alloy but lower than a solidus temperature of the Fe-Cr type alloy.
Claim 3
Dependent Claim
29 words
A process in accordance with claim 1 in which the Fe-Cr type particles contain 5 to 20 weight % of Cr and have a hardness less than Hv 200.
Claim 4
Dependent Claim
26 words
A process in accordance with claim 1 in which the eutectic alloy is of a Fe-M-C type wherein M is selected from Mo, B and P.
Claim 5
Dependent Claim
22 words
A process in accordance with claim 3 in which said Fe-M-C type alloy shows 20 to 100 volume % of liquid phase.
Claim 6
Dependent Claim
21 words
A process in accordance with claim 3 in which said Fe-M-C type alloy contains 3.0 to 5.0 weight % of C.
Claim 7
Dependent Claim
32 words
A process in accordance with claim 3 in which said Fe-M-C type alloy further contains less than 10 weight % of at least one of Cr, V, W, Nb, Ta and Ti.
Claim 8
Dependent Claim
25 words
A process in accordance with claim 1 in which the eutectic alloy is of a Fe-P-C type containing 1.0 to 5.0 weight % of P.
Claim 9
Dependent Claim
25 words
A process in accordance with claim 1 in which the eutectic alloy is of a Fe-Mo-C type containing 5.0 to 20.0 weight % of Mo.
Claim 10
Dependent Claim
25 words
A process in accordance with claim 1 in which the eutectic alloy is of a Fe-B-C type containing 1.0 to 6.0 weight % of B.
Claim 11
Dependent Claim
21 words
A process in accordance with claim 3 in which said Fe-M-C type alloy contains less than 5.0 weight % of Si.
Claim 12
Dependent Claim
27 words
A process in accordance with claim 3 in which said Fe-M-C type alloy contains less than 5.0 weight % of at least one of Ni and Mn.
Claim 13
Dependent Claim
17 words
A process in accordance with claim 1 in which the alloy particles are finer than 150 mesh.
Claim 14
Dependent Claim
42 words
A process in accordance with claim 1 in which said acryl binder is selected from polymers of acryl esters and methacryl esters, copolymers of acryl esters and methacryl esters, copolymers of said esters and monomers having functional groups copolymerizable with said esters.
Claim 15
Dependent Claim
60 words
A process in accordance with claim 1 in which said first and second layers are applied to the substrate by providing sheets of said alloy particles by mixing the particles with the acryl binders with addition of solvents to form mixtures, pouring the mixtures into molds and rolling the mixtures after drying, and then applying the sheets to the substrate.
Claim 16
Dependent Claim
21 words
A process in accordance with claim 14 in which said sheets are applied by using an acryl resin as an adhesive.
Claim 17
Dependent Claim
16 words
A process in accordance with claim 14 in which said sheets are applied by adhesive tapes.
Claim 18
Dependent Claim
27 words
A process in accordance with claim 1 in which said first layer is formed on the substrate and said second layer is formed on the first layer.
Claim 19
Dependent Claim
24 words
A process in accordance with claim 1 in which said non-oxidating atmosphere is provided one of inactive gas atmosphere, reducing gas atmosphere and vacuum.
Claim 20
Dependent Claim
32 words
A process in accordance with claim 1 in which a preheating is carried out at a temperature of 150° to 380° C. for 5 to 120 minutes prior to the heating step.
Claim 21
Dependent Claim
21 words
A process in accordance with claim 19 in which the preheating is carried out at a heating rate of 40° C./min.
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) | 1989-06-23 | 1989-12-23 | 1990-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-23 | 1993-12-23 | 1994-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-23 | 1997-12-23 | 1998-06-24 | $7700.00 | Window Closed / Lapsed |