JPS57193214A - Rolling controlling method of continuous mill - Google Patents
Rolling controlling method of continuous millInfo
- Publication number
- JPS57193214A JPS57193214A JP56076625A JP7662581A JPS57193214A JP S57193214 A JPS57193214 A JP S57193214A JP 56076625 A JP56076625 A JP 56076625A JP 7662581 A JP7662581 A JP 7662581A JP S57193214 A JPS57193214 A JP S57193214A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- stand
- speed
- fault
- controlling
- 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.)
- Granted
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
- B21B37/46—Roll speed or drive motor control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B33/00—Safety devices not otherwise provided for; Breaker blocks; Devices for freeing jammed rolls for handling cobbles; Overload safety devices
- B21B2033/005—Cobble-freeing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2275/00—Mill drive parameters
- B21B2275/02—Speed
- B21B2275/04—Roll speed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Stopping Of Electric Motors (AREA)
- Control Of Multiple Motors (AREA)
Abstract
PURPOSE:To prevent cobbling and breaking of a material, which are caused in a rolling material, by decelerating and controlling a motor of a normal stand, too, in the event of stopping one of driving motors of each stand due to occurrence of a fault of its electric system. CONSTITUTION:To a multiple continuous mill, a speed pattern switching device 12 is added. For instance, in case when a fault has occurred in an electric system of the third stand 3, a motor controlling panel 8-3 is immediately separated from a speed controller 10-3. Subsequently, to a motor 6-3, a generator control panel 9-3 is immediately connected, and it is decelerated and stopped. As for each other stand, a speed is controlled by a device 10 in accordance with an output signal of a pilot generator 7 coupled with each motor 6. When said fault has occurred, however, a speed controlling signal is switched to an output signal of a generator 7-3 since a speed pattern switching signal 5 has already been set to the device 12. As a result, each other motor 6 follows a deceleration pattern of the stand 3, decelerates and stops.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56076625A JPS57193214A (en) | 1981-05-22 | 1981-05-22 | Rolling controlling method of continuous mill |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56076625A JPS57193214A (en) | 1981-05-22 | 1981-05-22 | Rolling controlling method of continuous mill |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57193214A true JPS57193214A (en) | 1982-11-27 |
JPS6211926B2 JPS6211926B2 (en) | 1987-03-16 |
Family
ID=13610536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56076625A Granted JPS57193214A (en) | 1981-05-22 | 1981-05-22 | Rolling controlling method of continuous mill |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57193214A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0527609Y2 (en) * | 1987-10-15 | 1993-07-14 |
-
1981
- 1981-05-22 JP JP56076625A patent/JPS57193214A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6211926B2 (en) | 1987-03-16 |
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