Non-oriented electrical steel sheet and manufacturing method therefor
US-2018355450-A1 · Dec 13, 2018 · US
Punch processing method for electrical steel sheets and method for manufacturing laminated core
US11005345B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11005345-B2 |
| Application number | US-201716335949-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 22, 2017 |
| Priority date | Sep 29, 2016 |
| Publication date | May 11, 2021 |
| Grant date | May 11, 2021 |
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- Title
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Abstract
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A punch processing method for electrical steel sheets to manufacture core segments includes: stacking a plurality of electrical steel sheets; and punching out the plurality of electrical steel sheets in a stacked state simultaneously to manufacture the core segments, wherein in a case where the core segments are applied to a stator core in which a maximum magnetic flux density at a tooth portion is to be higher than a maximum magnetic flux density at a back yoke portion, degrees of Vickers hardness of an electrical steel sheet located second from a bottom side and above in the stacked state are set to 180 HV or higher, and 10 HV or higher than a value of degree of Vickers hardness of an electrical steel sheet located on the bottom side in the stacked state.
First claim
Opening claim text (preview).
The invention claimed is: 1. A punch processing method for electrical steel sheets to manufacture core segments comprising: stacking a plurality of electrical steel sheets; and punching out the plurality of electrical steel sheets in a stacked state simultaneously to manufacture the core segments, wherein in a case where the core segments are applied to a stator core in which a maximum magnetic flux density at a tooth portion is to be higher than a maximum magnetic flux density at a back yoke portion, degrees of Vickers hardness of an electrical steel sheet located second from a bottom side in the stacked state and an electrical steel sheet located above the electrical steel sheet located second from the bottom side in the stacked state are set to 180 HV or higher, and 10 HV or higher than a value of degree of Vickers hardness of an electrical steel sheet located on the bottom side in the stacked state. 2. A method of manufacturing a laminated core, the method comprising: laminating the core segments manufactured by the punch processing method according to claim 1 ; and integrating the laminated core segments.
Assignees
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Classifications
Electric machine technologies in electromobility · CPC title
Method of mechanical manufacture · CPC title
- H02K15/02Primary
of stator or rotor bodies · CPC title
Manufacturing of magnetic circuits made from sheets (magnetic cores made from sheets H01F27/245; soft magnetic alloys in the form of sheets H01F1/16) · CPC title
Machines characterised by numerical values, ranges, mathematical expressions or similar information · CPC title
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- What does patent US11005345B2 cover?
- A punch processing method for electrical steel sheets to manufacture core segments includes: stacking a plurality of electrical steel sheets; and punching out the plurality of electrical steel sheets in a stacked state simultaneously to manufacture the core segments, wherein in a case where the core segments are applied to a stator core in which a maximum magnetic flux density at a tooth portio…
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification H02K15/02. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 11 2021 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).