JPS564308A - Rolling mill for steel rod and bar - Google Patents
Rolling mill for steel rod and barInfo
- Publication number
- JPS564308A JPS564308A JP8056379A JP8056379A JPS564308A JP S564308 A JPS564308 A JP S564308A JP 8056379 A JP8056379 A JP 8056379A JP 8056379 A JP8056379 A JP 8056379A JP S564308 A JPS564308 A JP S564308A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- speed
- cutting
- rolling
- cutting machine
- 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
- 238000005096 rolling process Methods 0.000 title abstract 7
- 229910000831 Steel Inorganic materials 0.000 title 1
- 239000010959 steel Substances 0.000 title 1
- 238000009749 continuous casting Methods 0.000 abstract 2
- 238000004904 shortening Methods 0.000 abstract 1
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
- 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
- B21B1/46—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 metal immediately subsequent to continuous casting
- B21B1/466—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 metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Control Of Metal Rolling (AREA)
Abstract
PURPOSE:To restrict the temperature drop of the material before being fed into the rolling work to the minimum, and to carry out the rolling work, by increasing the rolling speed of the rolling mill after cutting the material by the cutting machine installed on the material run-out side of the continuous casting apparatus, and by shortening the travelling time between the cutting machine and the rolling mill. CONSTITUTION:The material 21 is running out of the continuous casting apparatus 1 at the specified speed; the biting speed for this material 21 into the rolling stand 12 is shown by the continuous signal S16. And if the signal 16 is given to the cutting machine control circuit 17, the cutting command signal of small time interval as shown by S17 is given to the cutting machine 6 at the rise-up point t1 of the signal 16, that is the moment as the tip of the material 21 is bitten into the stand 12; hereby, the material 21 is cut. Then thus cut preceding material is rolled at a free speed being unrestricted by above stated material speed. Hereupon, if the cutting finish signal S6 of the cutting machine 6 and the signal S16 are given to the speed-up control circuit 7, the speed-up control signal S7 is produced, and this signal is given to the speed reference circuit 9. Then, the signal S7 is linearly increased from the time t2 of finishing the cutting work, and is made maximum at the time t3 when the cut material 21 passes over the position of the detector 16, and is returned to zero before the next fed material is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8056379A JPS564308A (en) | 1979-06-26 | 1979-06-26 | Rolling mill for steel rod and bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8056379A JPS564308A (en) | 1979-06-26 | 1979-06-26 | Rolling mill for steel rod and bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS564308A true JPS564308A (en) | 1981-01-17 |
Family
ID=13721800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8056379A Pending JPS564308A (en) | 1979-06-26 | 1979-06-26 | Rolling mill for steel rod and bar |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS564308A (en) |
-
1979
- 1979-06-26 JP JP8056379A patent/JPS564308A/en active Pending
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