JPS5650726A - Etching method of plate material - Google Patents
Etching method of plate materialInfo
- Publication number
- JPS5650726A JPS5650726A JP12514579A JP12514579A JPS5650726A JP S5650726 A JPS5650726 A JP S5650726A JP 12514579 A JP12514579 A JP 12514579A JP 12514579 A JP12514579 A JP 12514579A JP S5650726 A JPS5650726 A JP S5650726A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- plate
- plate material
- vertical
- reduction
- 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 apply screw-down only to the central portion of a plate material, decrease width reduction and improve the yield of products by setting the roll gap at such a gap at which the rolling reduction of vertical rolls becomes zero near the front and rear ends of the plate material.
CONSTITUTION: In broadside screw down rolling of a plate material with vertical rolling mills, the vertical roll gap is set at a fixed gap in such a manner that the rolling reduction becomes substantially zero in the width reduction areas near the front end and rear end of the plate. Rolling is then performed in such a manner that screw-down is applied more than once only in the central portion of the plate of large width, whereby the extent of width reduction at the front and rear ends of the plate are decreased. In rolling with the vertical rolling mills in succession to this, the roll gap is changed during rolling so that the plate assumes a constant width from its leading end up to the trailing end.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12514579A JPS5650726A (en) | 1979-09-28 | 1979-09-28 | Etching method of plate material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12514579A JPS5650726A (en) | 1979-09-28 | 1979-09-28 | Etching method of plate material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5650726A true JPS5650726A (en) | 1981-05-08 |
Family
ID=14902973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12514579A Pending JPS5650726A (en) | 1979-09-28 | 1979-09-28 | Etching method of plate material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5650726A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05180070A (en) * | 1991-12-27 | 1993-07-20 | Isuzu Motors Ltd | Cylinder body for engine |
-
1979
- 1979-09-28 JP JP12514579A patent/JPS5650726A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05180070A (en) * | 1991-12-27 | 1993-07-20 | Isuzu Motors Ltd | Cylinder body for engine |
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