JPS5679247A - Defect-indicating apparatus on thin steel plate coil - Google Patents
Defect-indicating apparatus on thin steel plate coilInfo
- Publication number
- JPS5679247A JPS5679247A JP15667879A JP15667879A JPS5679247A JP S5679247 A JPS5679247 A JP S5679247A JP 15667879 A JP15667879 A JP 15667879A JP 15667879 A JP15667879 A JP 15667879A JP S5679247 A JPS5679247 A JP S5679247A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- detector
- magnetizer
- pin
- magnetic mark
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
PURPOSE: To permit the defect position on a steel plate to be readily discriminated without harming it mechanically and chemically by impressing a magnetic mark upon the defect position on a steel plate.
CONSTITUTION: Provided are flaw-detecting mirrors 4a and 4b, a magnetizer 5, a controller 6 for it, a pin-hole detector 7 and a steel-plate moving length detector 8. The pin-hole detector 7 comprises a light projector and a light receiver. The steel- plate moving length detector 8 comprises a magnetizer 8a, a magnetic mark detector 8b and a driver 8c. The magnetizer 8a impresses a magnetic mark upon a steel plate 1, and when the magnetic mark passes under the detector 8b, it sends a signal to the driver 8c. This actuates the magnetizer 8a to impress a magnetic mark upon the steel plate 1. After a pin-hole is detected by the pin-hole detector 7, the fact that the steel plate 1 has moved a certain distance is detected by reading the magnetic marks, and a magnetic mark is impressed upon the pin-hole position by the magnetizer 5.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15667879A JPS5679247A (en) | 1979-12-03 | 1979-12-03 | Defect-indicating apparatus on thin steel plate coil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15667879A JPS5679247A (en) | 1979-12-03 | 1979-12-03 | Defect-indicating apparatus on thin steel plate coil |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5679247A true JPS5679247A (en) | 1981-06-29 |
JPS6310784B2 JPS6310784B2 (en) | 1988-03-09 |
Family
ID=15632921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15667879A Granted JPS5679247A (en) | 1979-12-03 | 1979-12-03 | Defect-indicating apparatus on thin steel plate coil |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5679247A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101453620B1 (en) * | 2012-12-20 | 2014-10-22 | 주식회사 포스코 | Mix of stainless steel sheet and mix of production methods for stainless steel |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4856449A (en) * | 1971-11-16 | 1973-08-08 | ||
JPS4954087A (en) * | 1972-09-26 | 1974-05-25 | ||
JPS4964486A (en) * | 1972-10-19 | 1974-06-21 |
-
1979
- 1979-12-03 JP JP15667879A patent/JPS5679247A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4856449A (en) * | 1971-11-16 | 1973-08-08 | ||
JPS4954087A (en) * | 1972-09-26 | 1974-05-25 | ||
JPS4964486A (en) * | 1972-10-19 | 1974-06-21 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101453620B1 (en) * | 2012-12-20 | 2014-10-22 | 주식회사 포스코 | Mix of stainless steel sheet and mix of production methods for stainless steel |
Also Published As
Publication number | Publication date |
---|---|
JPS6310784B2 (en) | 1988-03-09 |
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