Melting furnace with simultaneously rotatable and movable electrode rod
US-11371779-B2 · Jun 28, 2022 · US
Method for manufacturing forged steel roll
US10144057B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10144057-B2 |
| Application number | US-201314378763-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 1, 2013 |
| Priority date | Feb 21, 2012 |
| Publication date | Dec 4, 2018 |
| Grant date | Dec 4, 2018 |
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- Title
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Abstract
Official abstract text for this publication.
A method for manufacturing a forged steel roll comprises: casting, by the ESR method, a steel ingot which contains, by mass %, C: 0.3% or more, Si: 0.2% or more, Cr: 2.0-13.0% and Mo: 0.2% or more, and further contains Bi at 10-100 ppm by mass; and forging the steel ingot to manufacture the roll. According to this method, since freckle defects can be sealed near the center of the steel ingot, the roll can be stably used over a long period of time.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for manufacturing a forged steel roll, comprising: casting, by an electroslag remelting method, a steel ingot which contains, by mass %, C: 0.3% or more, Si: 0.2% or more, Cr: 2.0-13.0% and Mo: 0.2% or more, and further contains Bi at 10-38 ppm by mass; and forging the steel ingot into a roll.
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Classifications
affecting grain orientation · CPC title
- B22D23/10Primary
Electroslag casting {(electroslag remelting C22B9/18)} · CPC title
balls, rolls, or rollers, e.g. for bearings · CPC title
with molybdenum or tungsten · CPC title
- B22D7/00Primary
Casting ingots, {e.g. from ferrous metals}(equipment for conveying molten metal B22D35/00) · CPC title
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- What does patent US10144057B2 cover?
- A method for manufacturing a forged steel roll comprises: casting, by the ESR method, a steel ingot which contains, by mass %, C: 0.3% or more, Si: 0.2% or more, Cr: 2.0-13.0% and Mo: 0.2% or more, and further contains Bi at 10-100 ppm by mass; and forging the steel ingot to manufacture the roll. According to this method, since freckle defects can be sealed near the center of the steel ingot, t…
- Who is the assignee on this patent?
- Nippon Steel & Sumitomo Metal Corp
- What technology area does this patent fall under?
- Primary CPC classification B22D23/10. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 04 2018 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).