Steel sheet inspection device, steel sheet inspection method, and steel sheet manufacturing method
US-2015253242-A1 · Sep 10, 2015 · US
Electron gun abnormality detecting device and electron gun abnormality detecting method
US9304078B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9304078-B2 |
| Application number | US-201314431221-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 25, 2013 |
| Priority date | Sep 28, 2012 |
| Publication date | Apr 5, 2016 |
| Grant date | Apr 5, 2016 |
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Abstract
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An electron gun abnormality detecting device for detecting an abnormality in first and second electron guns of a magnetic domain refining device for an electrical steel sheet includes: a magnetooptic element configured to contact with and separate from an inspection region set to include a boundary between a magnetic domain discontinuity generated by irradiation of a surface of the electrical steel sheet with an electron beam by the first electron gun and a magnetic domain discontinuity generated by irradiation thereof with an electron beam by the second electron gun, and configured to detect a steel sheet magnetic domain structure in the inspection region as an optical property; a light source configured to irradiate the magnetooptic element with linearly polarized light; and a detector configured to detect polarized light rotated by the steel sheet magnetic domain structure transferred to the magnetooptic element.
First claim
Opening claim text (preview).
The invention claimed is: 1. An electron gun abnormality detecting device for detecting an abnormality in electron guns of a magnetic domain refining device for an electrical steel sheet, the magnetic domain refining device including at least a first electron gun and a second electron gun, and the electron gun abnormality detecting device comprising: a magnetooptic element configured to contact with and separate from an inspection region set to include a boundary between a magneti…
Assignees
Inventors
Classifications
- G01N21/21Primary
Physics · mapped topic
Physics · mapped topic
Electricity · mapped topic
- G01R33/032Primary
Physics · mapped topic
Physics · mapped topic
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- What does patent US9304078B2 cover?
- An electron gun abnormality detecting device for detecting an abnormality in first and second electron guns of a magnetic domain refining device for an electrical steel sheet includes: a magnetooptic element configured to contact with and separate from an inspection region set to include a boundary between a magnetic domain discontinuity generated by irradiation of a surface of the electrical s…
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification G01N21/21. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 05 2016 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).