Structure and fabrication method of a multilayer overlay for plain bearings
US-2015369287-A1 · Dec 24, 2015 · US
Method for heat-treating ring-shaped member and method for producing ring-shaped member
US9181599B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9181599-B2 |
| Application number | US-201214354816-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 16, 2012 |
| Priority date | Oct 28, 2011 |
| Publication date | Nov 10, 2015 |
| Grant date | Nov 10, 2015 |
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Abstract
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A method for heat-treating a ring-shaped member includes the steps of: forming, by relatively rotating an coil along the circumferential direction of the formed body, an annular heated region in the formed body, the heated region having the steel austenitized therein; and simultaneously cooling a whole of the heated region to a temperature of not more than an M s point. In the step of forming the heated region, the heating is performed to repeatedly change over for a plurality of times between a state in which each region of the rolling contact surface has a temperature exceeding a temperature of an A 1 point and a state in which each region of the rolling contact surface has a temperature that is less than the temperature of the A 1 point and that maintains a supercooled austenite state.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for heat-treating a ring-shaped member comprising the steps of: forming, by relatively rotating an induction heating member arranged to face part of a circumferential surface of a ring-shaped member made of steel for induction-heating said ring-shaped member along the circumferential direction of said ring-shaped member, an annular heated region in said ring-shaped member, said heated region having said steel austenitized therein; and simult…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9181599B2 cover?
- A method for heat-treating a ring-shaped member includes the steps of: forming, by relatively rotating an coil along the circumferential direction of the formed body, an annular heated region in the formed body, the heated region having the steel austenitized therein; and simultaneously cooling a whole of the heated region to a temperature of not more than an M s point. In the step of forming …
- Who is the assignee on this patent?
- Ohki Chikara, Ntn Toyo Bearing Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C21D9/40. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 10 2015 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).