JPS5671523A - Detect display method to steel sheet coil - Google Patents
Detect display method to steel sheet coilInfo
- Publication number
- JPS5671523A JPS5671523A JP14815379A JP14815379A JPS5671523A JP S5671523 A JPS5671523 A JP S5671523A JP 14815379 A JP14815379 A JP 14815379A JP 14815379 A JP14815379 A JP 14815379A JP S5671523 A JPS5671523 A JP S5671523A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- flaw
- marks
- magnetic
- magnetizers
- 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.)
- Pending
Links
Abstract
PURPOSE: To attach defect marks sanitarily and improve practicability by disposing flaw detectors etc. to a coiling process of steel sheets, disposing magnetizers in the predetermined position in the width direction of the steel sheet behind these and putting magnetic marks near a flaw or the like when such is detected.
CONSTITUTION: In a process of winding, for example, a steel sheet 1 for food cans alternately to a plurality of reels 24, 25, flaw-detecting mirrors 4a, 4b are opposed to the steel plate 1, and a pinhole detector 7 is disposed. In the predetermined positions in the width direction of the steel sheet 1 behind these, magnetizers 5, 8 operated by a switch 6a are disposed. When any flaw or pinhole is detected, the magnetizers 5, 8 are operated by the switch 6a to put magnetic marks in the predetermined positions (side edge parts of the sheet) near the flaw or pinhole position of the steel sheet 1. In addition, as a measure for erasing the magnetic marks in the magnetomotive force part of a magnet roller or the like, the magnetic marks are detected just before the magnetic roll and are rewritten in the steel sheet after this rolling work, whereby the jumping of the magnetic roll by the magnetic marks is accomplished and the marks are stabilized.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14815379A JPS5671523A (en) | 1979-11-15 | 1979-11-15 | Detect display method to steel sheet coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14815379A JPS5671523A (en) | 1979-11-15 | 1979-11-15 | Detect display method to steel sheet coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5671523A true JPS5671523A (en) | 1981-06-15 |
Family
ID=15446439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14815379A Pending JPS5671523A (en) | 1979-11-15 | 1979-11-15 | Detect display method to steel sheet coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5671523A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63180323A (en) * | 1987-01-22 | 1988-07-25 | Daiwa Can Co Ltd | Method for display and discharge of defective part of metal coil thin plate for can making |
| JPS6453418A (en) * | 1987-04-14 | 1989-03-01 | Gen Signal Corp | Wafer aligning system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49111659A (en) * | 1973-02-21 | 1974-10-24 |
-
1979
- 1979-11-15 JP JP14815379A patent/JPS5671523A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49111659A (en) * | 1973-02-21 | 1974-10-24 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63180323A (en) * | 1987-01-22 | 1988-07-25 | Daiwa Can Co Ltd | Method for display and discharge of defective part of metal coil thin plate for can making |
| JPS6453418A (en) * | 1987-04-14 | 1989-03-01 | Gen Signal Corp | Wafer aligning system |
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