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US-11981152-B2 · May 14, 2024 · US
Magnet Manufacturing Method And Magnet
US2016307697A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016307697-A1 |
| Application number | US-201615094373-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 8, 2016 |
| Priority date | Apr 16, 2015 |
| Publication date | Oct 20, 2016 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A magnet manufacturing method has a step of preparing mixed powder of magnetic powder of a hard magnetic material, which includes one or more of an Fe—N-based compound and an R—Fe—N-based compound and a lubricant that allows formation of an adsorption film on a surface of the magnetic powder, a step of heating the mixed powder at a temperature that is equal to or higher than a melting point of the lubricant and that is lower than a decomposition temperature of the magnetic powder to form the adsorption film of the lubricant on the surface of the magnetic powder, a step of pressurizing and molding the magnetic powder in order to obtain a primary molding, and a step of heating the primary molding at a temperature that is lower than the decomposition temperature of the magnetic powder.
First claim
Opening claim text (preview).
What is claimed is: 1 . A magnet manufacturing method comprising: preparing mixed powder of magnetic powder of a hard magnetic material, which includes one or more of an Fe—N-based compound and an R—Fe—N-based compound, and a lubricant that allows formation of an adsorption film on a surface of the magnetic powder; heating the mixed powder at a temperature that is equal to or higher than a melting point of the lubricant and that is lower than a decomposition temperature of the magnetic powder to form the adsorption film of the lubricant on the surface of the magnetic powder; pressurizing and molding the magnetic powder in order to obtain a primary molding; and heating the primary molding at a temperature that is lower than the decomposition temperature of the magnetic powder. 2 . The magnet manufacturing method according to claim 1 , wherein the lubricant is a metal soap-based lubricant. 3 . The magnet manufacturing method according to claim 1 , wherein pressurization is performed a plurality of times. 4 . The magnet manufacturing method according to claim 1 , wherein the heating of the primary molding is performed at a temperature equal to or higher than a melting point of the lubricant. 5 . A magnet manufactured by the magnet manufacturing method according to claim 1 .
Assignees
Inventors
Classifications
Metallic powder coated with organic material · CPC title
- B22F1/10Primary
Metallic powder containing lubricating or binding agents; Metallic powder containing organic material · CPC title
Processes characterised by the sequence of their steps · CPC title
Nitride · CPC title
Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product · CPC title
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- What does patent US2016307697A1 cover?
- A magnet manufacturing method has a step of preparing mixed powder of magnetic powder of a hard magnetic material, which includes one or more of an Fe—N-based compound and an R—Fe—N-based compound and a lubricant that allows formation of an adsorption film on a surface of the magnetic powder, a step of heating the mixed powder at a temperature that is equal to or higher than a melting point of …
- Who is the assignee on this patent?
- Jtekt Corp
- What technology area does this patent fall under?
- Primary CPC classification B22F1/10. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Oct 20 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).