JPS56128602A - Cold rolling method for steel sheet - Google Patents
Cold rolling method for steel sheetInfo
- Publication number
- JPS56128602A JPS56128602A JP3305580A JP3305580A JPS56128602A JP S56128602 A JPS56128602 A JP S56128602A JP 3305580 A JP3305580 A JP 3305580A JP 3305580 A JP3305580 A JP 3305580A JP S56128602 A JPS56128602 A JP S56128602A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- roll
- rolling
- rolls
- roll gap
- 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
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
-
- 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
- B21B1/24—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 in a continuous or semi-continuous process
- B21B1/28—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 in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2271/00—Mill stand parameters
- B21B2271/06—Mill spring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/06—Threading
- B21B2273/08—Threading-in or before threading-in
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
PURPOSE:To shorten the time requirement in threading the steel sheet through the rolling stand, and to remarkably improve the rolling efficiency, by previously determining the roll gap in which the finishing size of the steel sheet satisfies the common difference, and by threading the steel sheet through the roll gap kept at the maximum of above predetermined values. CONSTITUTION:The rolling line L, comprising plural cold rolling rolls 1, rolls the steel sheet 2; hereupon, the roll gap So of each roll 1 is preset by the controller 3 before feeding the steel sheet 2. The controller 3 is actuated by the CPU4 which prestores the values of formulas I, II, (a), (b), (c) and the specifications of the steel sheet 2. Besides, the draft percentage of each roll 1 is distributed so as to realize the uniform distribution of draft percentages or the uniform distribution of load factors, and the formula I is applied to the draft percentage of each roll 1. By thus widening the roll gap So of all rolls 1 to the possible maximum, the feeding speed of the steel sheet 2 can be remarkably increased, the rolling load of the roll 1 is lightened, and the steel sheet 2 can be beautifully finished. In the formulas, P is the rolling load, K is the mill stiffness, (h) is the aimed thickness of the steel sheet 2, and alpha is the correction factor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3305580A JPS56128602A (en) | 1980-03-14 | 1980-03-14 | Cold rolling method for steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3305580A JPS56128602A (en) | 1980-03-14 | 1980-03-14 | Cold rolling method for steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56128602A true JPS56128602A (en) | 1981-10-08 |
Family
ID=12376068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3305580A Pending JPS56128602A (en) | 1980-03-14 | 1980-03-14 | Cold rolling method for steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56128602A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332471B (en) | 2008-07-31 | 2012-05-02 | 南京钢铁股份有限公司 | A Dynamic Control Method of Biting Speed of Rolling Mill |
-
1980
- 1980-03-14 JP JP3305580A patent/JPS56128602A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332471B (en) | 2008-07-31 | 2012-05-02 | 南京钢铁股份有限公司 | A Dynamic Control Method of Biting Speed of Rolling Mill |
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