Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Electron gun anomaly detection device and electron gun anomaly detection method

An anomaly detection, electron gun technology, applied in the direction of the electrode device and related components, the size/direction of the magnetic field, the use of magneto-optical equipment for magnetic field measurement, etc., can solve the problems of reduced yield and long time

Active Publication Date: 2017-08-18
JFE STEEL CORP
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, even when a defect occurs in the magnetic domain refinement process, it takes a long time to detect the defect, and the continued production of defective products leads to a decrease in yield.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electron gun anomaly detection device and electron gun anomaly detection method
  • Electron gun anomaly detection device and electron gun anomaly detection method
  • Electron gun anomaly detection device and electron gun anomaly detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0062] Next, an operation example of a production line in which abnormality detection processing of the electron gun 3 of the magnetic domain refining device 2 is performed by the electron gun abnormality detection method according to the embodiment of the present invention will be described. Figure 10 as well as Figure 11 It is a graph of the minimum value of the width of the magnetic domain discontinuity detected by the electron gun abnormality detection method according to the embodiment of the present invention.

[0063] Figure 10 Indicates the inspection results of a production line for two days, Figure 11 is from Figure 10 The two-day inspection results of the production line 3 months after the inspection started. The inspection is performed at the time of stop when replacing the coil of the steel sheet S in the production line. in addition, Figure 10 as well as Figure 11 Example combination of diagrams figure 2 Assignment of reference symbols in the inspe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An electron gun abnormality detection device (1) of the present invention detects abnormality of an electron gun (3) of a magnetic domain refinement device (2) of an electrical steel sheet provided with a plurality of electron guns (3a), (3b), (3c), (3d) , which has: a magneto-optical element (5), and a magnetic domain discontinuity (L ) The inspection areas (R1), (R2), (R3) set in the manner of the boundary of the inspection area (R1), (R2), (R3) contact or break away and detect the magnetic domain structure of the steel plate (S) in the inspection area (R1), (R2), (R3) as Optical properties; the light source (7) irradiates linearly polarized light on the magneto-optical element; the detector (12) uses the magnetic domain structure of the steel plate (S) transferred by the magneto-optic element (5) to detect the rotated polarized light.

Description

technical field [0001] The invention relates to an electron gun (electron gun) anomaly detection device and an electron gun anomaly detection method. Background technique [0002] Electrical steel sheet (electrical steel sheet) is a steel sheet with high magnetic permeability, low iron loss and excellent magnetic properties. For example, a grain oriented electrical steel sheet is often used for a magnetic core of a transformer. The alternating current flowing through the electric wire wound around the magnetic core of the transformer generates an alternating magnetic field inside the magnetic core. Generally, when an AC magnetic field is applied in a steel sheet, eddy current loss and hysteresis loss occur. These eddy current losses and hysteresis losses are required to be reduced in electrical steel sheets. [0003] It is inevitable to generate eddy current loss when an AC magnetic field is applied to the steel plate, and the higher the frequency, the greater the eddy cu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/72G01R33/032
CPCG01R33/032G01N27/72G01N21/21G01N2201/062H01J29/48
Inventor 伊藤友彦四辻淳一高城重宏山口广花泽和浩古贺泰成
Owner JFE STEEL CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com