Magnetic core and coil component using same
US-2016336104-A1 · Nov 17, 2016 · US
Machine component made of ferrous sintered metal
US12146208B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12146208-B2 |
| Application number | US-202117313438-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 6, 2021 |
| Priority date | Sep 12, 2012 |
| Publication date | Nov 19, 2024 |
| Grant date | Nov 19, 2024 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Raw material powder containing iron powder, copper powder, and tin powder is compressed to form a green compact. The green compact is sintered in a temperature range of from 750 to 900° C., to bond iron structures to each other with copper and tin.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of manufacturing a machine part, the method comprising the steps of: compressing raw material powder containing 1 to 10 wt % of copper powder, 0.5 to 2 wt % of tin powder, and 0.1 wt % or more and less than 0.5 wt % of graphite powder, with the balance being iron powder to form green compacts; and sintering the green compacts in a temperature range of 750° C. or more and less than 900° C. in a non-aligned state in which directions and postures of the green compacts are not uniformized, to bond iron structures to each other with copper and tin and obtain sintered compacts, wherein the sintered compacts are not subjected further sintering. 2. The method of manufacturing of the machine part according to claim 1 , wherein the iron structures are bonded to each other with a copper-tin alloy. 3. The method of manufacturing of the machine part according to claim 1 , wherein the iron-based sintered metal comprises free graphite. 4. The method of manufacturing of the machine part according to claim 1 , wherein the raw material powder has a blending ratio of tin to copper of 1/5 or more and 1 or less in terms of weight ratio. 5. The method of manufacturing of the machine part according to claim 1 , wherein the temperature range for sintering the green compacts is from 800 to 850° C.
Assignees
Inventors
Classifications
Camshafts · CPC title
Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product · CPC title
Both compacting and sintering (by forging B22F3/17) · CPC title
containing inorganic lubricating or binding agents, e.g. metal salts · CPC title
Tools for producing, mounting or adjusting, e.g. some part of the distribution · CPC title
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- What does patent US12146208B2 cover?
- Raw material powder containing iron powder, copper powder, and tin powder is compressed to form a green compact. The green compact is sintered in a temperature range of from 750 to 900° C., to bond iron structures to each other with copper and tin.
- Who is the assignee on this patent?
- Mouri Toshihiko, NAGATA Hiroharu, Ntn Toyo Bearing Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C22C33/0257. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 19 2024 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).