JPS55133813A - Controlling method for sheet breadth at hot roughing pass - Google Patents
Controlling method for sheet breadth at hot roughing passInfo
- Publication number
- JPS55133813A JPS55133813A JP3836179A JP3836179A JPS55133813A JP S55133813 A JPS55133813 A JP S55133813A JP 3836179 A JP3836179 A JP 3836179A JP 3836179 A JP3836179 A JP 3836179A JP S55133813 A JPS55133813 A JP S55133813A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- breadth
- middle point
- contraction
- tip
- 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
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
PURPOSE: To roll the coil into the same breadth through the finishing pass, by calculating the roll gap of the edger in the roughing mill group at the coil tip and coil end according to the set value for the middle point of the coil, and by carrying out the timing rolling.
CONSTITUTION: At the first, the set vale B0 of the roll gap to make breadth at the middle point of the coil to be the aim breadth is calculated. Next, the breadth contraction at the coil tip due to the interstand tension different according to the product size and the steel grade is specified, and the corrective amount bT of the finishing tension is calculated. Then, the breadth contraction at the coil end is specified, and the corrective amount bE is calculated. From these values, the set values for the coil tip and coil end are obtained by adding bT, bE, to the set value B0 for the middle point of the coil. Each of set values for the coil is inputted to CPU by the timing register attached to the horizontal roll 6, and the output of CPU is inputted to APC. Hereby, the breadth contraction at the coil tip due to the tension between finishing stands is corrected at the roughing pass, and the sheet breadth on the feed side of the finishing stand is spread as far as the breadth contraction than that of the middle point of the coil, and then, the sheet breadth at the tip and middle point of the coil are equalized. Further, the breadth at the coil end is also equalized to that at the middle point of the coil.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3836179A JPS55133813A (en) | 1979-04-02 | 1979-04-02 | Controlling method for sheet breadth at hot roughing pass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3836179A JPS55133813A (en) | 1979-04-02 | 1979-04-02 | Controlling method for sheet breadth at hot roughing pass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55133813A true JPS55133813A (en) | 1980-10-18 |
Family
ID=12523135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3836179A Pending JPS55133813A (en) | 1979-04-02 | 1979-04-02 | Controlling method for sheet breadth at hot roughing pass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55133813A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59150609A (en) * | 1983-02-17 | 1984-08-28 | Toshiba Corp | Sheet width controlling device in hot rolling installation |
-
1979
- 1979-04-02 JP JP3836179A patent/JPS55133813A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59150609A (en) * | 1983-02-17 | 1984-08-28 | Toshiba Corp | Sheet width controlling device in hot rolling installation |
| JPH0472606B2 (en) * | 1983-02-17 | 1992-11-18 | Tokyo Shibaura Electric Co |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS53112253A (en) | Controlling method for interstand tension in continuous rolling mill | |
| JPS55133813A (en) | Controlling method for sheet breadth at hot roughing pass | |
| JPS56168906A (en) | Method and apparatus for controlling breadth of steel sheet rolled by rolling mill | |
| JPS5584207A (en) | Rolling equipment row of hot strip | |
| JPS5680310A (en) | Controlling method for plane shape of thick plate | |
| JPS5630018A (en) | Shape controlling method for sheet rolling work | |
| JPS566701A (en) | Rolling method for deformed steel bar | |
| JPS54139864A (en) | Broadside rolling mill for slab | |
| JPS55109502A (en) | Rolling method | |
| JPS5662606A (en) | Controlling method of cold rolling mill | |
| JPS5577927A (en) | Preventing method for meandering motion of strip in hot leveler | |
| JPS574304A (en) | Method and apparatus for rough rolling with differential roll speeds | |
| JPS57103706A (en) | Method for decreasing plate crown | |
| ES479449A1 (en) | Process and circuit for interstand tension control in a continuous rolling mill having individual drives. | |
| JPS6440102A (en) | Method for hot edging of metal slab | |
| JPS5750209A (en) | Controlling method for sheet breadth in hot roughing process | |
| JPS56128602A (en) | Cold rolling method for steel sheet | |
| JPS56163012A (en) | Calculating method for rolling schedule of tandem mill | |
| JPS5619915A (en) | Controlling method for electric current of continuous rolling mill | |
| JPS5680311A (en) | Controlling method for rolling mill | |
| JPS5695402A (en) | Manufacture of rough shaped billet for h-beam | |
| JPS55100801A (en) | Manufacture of h-beam with extremely wide breadth | |
| JPS56144813A (en) | Controlling method for thickness of tail end of strip | |
| JPS5736006A (en) | Rolling system | |
| JPS5443862A (en) | Deciding method for roll gap in rolling mill |