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US-2024301561-A1 · Sep 12, 2024 · US
Sintered friction material
US11534829B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11534829-B2 |
| Application number | US-201716603520-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 7, 2017 |
| Priority date | Apr 7, 2017 |
| Publication date | Dec 27, 2022 |
| Grant date | Dec 27, 2022 |
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Abstract
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A sintered friction material is formed by pressure sintering mixed powder at 800° C. or above, the mixed powder consisting of, in mass %, Cu and/or Cu alloy: 40.0 to 80.0%, Ni: 0% or more and less than 5.0%, Sn: 0 to 10.0%, Zn: 0 to 10.0%, VC: 0.5 to 5.0%, Fe and/or Fe alloy: 2.0 to 40.0%, lubricant: 5.0 to 30.0%, metal oxide and/or metal nitride: 1.5 to 30.0%, and the balance being impurity.
First claim
Opening claim text (preview).
The invention claimed is: 1. A sintered friction material formed by pressure sintering mixed powder at 800° C. or above, the mixed powder consisting of, in mass %: Cu and/or Cu alloy: 40.0 to 80.0%; Ni: 0% or more and less than 5.0%; Sn: 0 to 10.0%; Zn: 0 to 10.0%; VC: 0.5 to 5.0%; Fe alloy and optionally Fe: 2.0 to 40.0%; lubricant: 5.0 to 30.0%; metal oxide and/or metal nitride: 1.5 to 30.0%; and the balance being impurity, wherein the Fe alloy includes stainless steel, wherein the metal oxide and/or metal nitride includes one or more kinds selected from zircon sand, silica, mullite, and silicon nitride. 2. The sintered friction material according to claim 1 , wherein the lubricant contains one or more kinds selected from graphite: 5.0 to 15.0%, hexagonal boron nitride: 3.0% or less, molybdenum disulfide: 3.0% or less, mica: 3.0% or less, and one or more kinds selected from tungsten disulfide, iron sulfide, chromium sulfide, copper sulfide, and copper matte: 10.0% or less. 3. The sintered friction material according to claim 1 , wherein the Fe alloy includes one or more kinds selected from ferrochromium, ferrotungsten, and ferromolybdenum. 4. The sintered friction material according to claim 2 , wherein the Fe alloy includes one or more kinds selected from ferrochromium, ferrotungsten, and ferromolybdenum.
Assignees
Inventors
Classifications
- B22F7/008Primary
characterised by the composition · CPC title
Iron · CPC title
Low melting point metals, i.e. Zn, Pb, Sn, Cd, In, Ga · CPC title
Copper · CPC title
Oxide · CPC title
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- What does patent US11534829B2 cover?
- A sintered friction material is formed by pressure sintering mixed powder at 800° C. or above, the mixed powder consisting of, in mass %, Cu and/or Cu alloy: 40.0 to 80.0%, Ni: 0% or more and less than 5.0%, Sn: 0 to 10.0%, Zn: 0 to 10.0%, VC: 0.5 to 5.0%, Fe and/or Fe alloy: 2.0 to 40.0%, lubricant: 5.0 to 30.0%, metal oxide and/or metal nitride: 1.5 to 30.0%, and the balance being impurity.
- Who is the assignee on this patent?
- Nippon Steel Corp, Fine Sinter Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B22F7/008. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 27 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).