Sliding member
US-2016333932-A1 · Nov 17, 2016 · US
Sintered bearing
US2016348722A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016348722-A1 |
| Application number | US-201615236913-A |
| Country | US |
| Kind code | A1 |
| Filing date | Aug 15, 2016 |
| Priority date | Mar 7, 2012 |
| Publication date | Dec 1, 2016 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
Provided is a sintered bearing ( 1 ) including an inner layer ( 2 ) and an outer layer ( 3 ) formed by integral molding, the sintered bearing ( 1 ) having a bearing surface (A) formed on an inner peripheral surface ( 2 a) of an inner layer ( 2 ). The inner layer ( 2 ) is made of sintered metal containing Fe and a hardness increasing element (such as Ni or Mo). The outer layer ( 3 ) is made of sintered metal containing Fe and no hardness increasing element. A concentration gradient of the hardness increasing element is present at an interface between the inner layer ( 2 ) and the outer layer ( 3 ).
First claim
Opening claim text (preview).
1 - 7 . (canceled) 8 . A manufacturing method for a sintered bearing comprising: molding a green compact having a cylindrical shape, the green compact having an inner layer and an outer layer provided on a radially outer side of the inner layer; and sintering the green compact to obtain a sintered compact having an inner layer and an outer layer provided on a radially outer side of the inner layer, a bearing surface is provided on an inner peripheral surface of the inner layer of the sintered compact, wherein the inner layer of the green compact is made of Fe and a hardness increasing element, and the outer layer of the green compact is made of Fe and no hardness increasing element. 9 . The manufacturing method for the sintered bearing according to claim 8 , wherein the hardness increasing element comprises at least one kind selected from among Ni, Mo, Mn, and Cr. 10 . The manufacturing method for the sintered bearing according to claim 8 , wherein the inner layer of the green compact is made of Fe, Cu, C, Ni, Mo, and inevitable impurities as the balance, and the outer layer of the green compact is made of Fe, Cu, C, and inevitable impurities as the balance. 11 . The manufacturing method for the sintered bearing according to claim 8 , wherein at least one of the inner layer and the outer layer contains Cu. 12 . The manufacturing method for the sintered bearing according to claim 11 , wherein a mixing ratio of the Cu in the outer layer is lower than a mixing ratio of the Cu in the inner layer. 13 . A manufacturing method for a sintered bearing comprising: molding a green compact having a cylindrical shape, the green compact having an inner layer and an outer layer provided on a radially outer side of the inner layer; and sintering the green compact to obtain a sintered compact having an inner layer and an outer layer provided on a radially outer side of the inner layer, a bearing surface is provided on an outer peripheral surface of the outer layer of the sintered compact, wherein the outer layer of the green compact is made of Fe and a hardness increasing element, and the inner layer of the green compact is made of Fe and no hardness increasing element. 14 . The manufacturing method for the sintered bearing according to claim 13 , wherein the hardness increasing element comprises at least one kind selected from among Ni, Mo, Mn, and Cr. 15 . The manufacturing method for the sintered bearing according to claim 13 , wherein the outer layer of the green compact is made of Fe, Cu, C, Ni, Mo, and inevitable impurities as the balance, and the inner layer of the green compact is made of Fe, Cu, C, and inevitable impurities as the balance. 16 . The manufacturing method for the sintered bearing according to claim 13 , wherein at least one of the inner layer and the outer layer contains Cu. 17 . The manufacturing method for the sintered bearing according to claim 16 , wherein a mixing ratio of the Cu in the inner layer of the green compact is lower than a mixing ratio of the Cu in the outer layer of the green compact.
Assignees
Inventors
Classifications
Ferrous alloys, e.g. steel alloys · CPC title
containing nickel {(C22C38/105 takes precedence)} · CPC title
of sintered porous bearings · CPC title
Strength or rigidity · CPC title
Iron · CPC title
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- What does patent US2016348722A1 cover?
- Provided is a sintered bearing ( 1 ) including an inner layer ( 2 ) and an outer layer ( 3 ) formed by integral molding, the sintered bearing ( 1 ) having a bearing surface (A) formed on an inner peripheral surface ( 2 a) of an inner layer ( 2 ). The inner layer ( 2 ) is made of sintered metal containing Fe and a hardness increasing element (such as Ni or Mo). The outer layer ( 3 ) is made of s…
- Who is the assignee on this patent?
- Mouri Toshihiko, Yoshizuka Noriyoshi, Sugai Yousuke, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification F16C33/128. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Dec 01 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).