JPS57187101A - Rolling method for reducing edge drop in hot rolling - Google Patents
Rolling method for reducing edge drop in hot rollingInfo
- Publication number
- JPS57187101A JPS57187101A JP7064381A JP7064381A JPS57187101A JP S57187101 A JPS57187101 A JP S57187101A JP 7064381 A JP7064381 A JP 7064381A JP 7064381 A JP7064381 A JP 7064381A JP S57187101 A JPS57187101 A JP S57187101A
- Authority
- JP
- Japan
- Prior art keywords
- thickness
- rolled
- end parts
- parts
- plate
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
Abstract
PURPOSE:To reduce edge drops and center crowns by increasing the plate thicknesses in both broadside end parts of a material to be rolled in accordance with specific conditions on the upper stream than the final stand of hot finishing stages then screwing down both end parts gradually. CONSTITUTION:Plate thickness increasing parts are so formed as to increase the thicknesses in the broadside thickness parts of a material to be rolled in the plate end parts on the upper stream than the final stand of hot finishing stages, and this material is flat rolled in the subsequent passes. Here, the thickness increasing in the plate end parts is so limited as to satisfy the equationI(H: the thickness in the central part of the material to be rolled, B: the width of the material to be rolled, the difference between the thickness in the end parts and the thickness in the central parts, that is, the height of the thickness increased part alpha, W: the width of the thickness increased part alpha, S: WXh, that is, the sectional area of the thickness increased part alpha). According to this method, not only edge drops are reduced effectively, but also center crowns are reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7064381A JPS57187101A (en) | 1981-05-13 | 1981-05-13 | Rolling method for reducing edge drop in hot rolling |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7064381A JPS57187101A (en) | 1981-05-13 | 1981-05-13 | Rolling method for reducing edge drop in hot rolling |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57187101A true JPS57187101A (en) | 1982-11-17 |
Family
ID=13437526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7064381A Pending JPS57187101A (en) | 1981-05-13 | 1981-05-13 | Rolling method for reducing edge drop in hot rolling |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57187101A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6186003A (en) * | 1984-10-02 | 1986-05-01 | Nippon Steel Corp | Rolling method of strip |
-
1981
- 1981-05-13 JP JP7064381A patent/JPS57187101A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6186003A (en) * | 1984-10-02 | 1986-05-01 | Nippon Steel Corp | Rolling method of strip |
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