JPS5791812A - Changing method of drooping quantity for speed controller of rolling mill - Google Patents
Changing method of drooping quantity for speed controller of rolling millInfo
- Publication number
- JPS5791812A JPS5791812A JP55169411A JP16941180A JPS5791812A JP S5791812 A JPS5791812 A JP S5791812A JP 55169411 A JP55169411 A JP 55169411A JP 16941180 A JP16941180 A JP 16941180A JP S5791812 A JPS5791812 A JP S5791812A
- Authority
- JP
- Japan
- Prior art keywords
- drooping
- speed
- rolling
- controlling
- stand
- 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
Landscapes
- Control Of Metal Rolling (AREA)
Abstract
PURPOSE: To prevent a slip in continuous rolling and to operate threading smoothly, by controlling the rolling speed with a previously set drooping quantity at the biting of rolling material, and controlling the speed with a normal value when the material reaches a prescribed position.
CONSTITUTION: When a rolling material 5 is bitten into a stand B froma stand A, a drooping quantity ZB is computed by an operator 24, from a previously inputted sectional area A and a correcting factor K for respective kinds of steel of the rolling material 5, to output it to a speed controlling device 2B, thereby controlling the speed of a motor 1B based on the drooping quantity ZB. When the tip of material 5 reaches a prescribed position just before a stand C, the drooping quantity is changed to a normal value Zb. Similarly, stands C and D are controlled, and further tA, tB and tC indicating the timing for changing droop, are set to approximately 0.3sec. before the biting of the material at the stands B and C.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55169411A JPS5791812A (en) | 1980-12-01 | 1980-12-01 | Changing method of drooping quantity for speed controller of rolling mill |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55169411A JPS5791812A (en) | 1980-12-01 | 1980-12-01 | Changing method of drooping quantity for speed controller of rolling mill |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5791812A true JPS5791812A (en) | 1982-06-08 |
Family
ID=15886095
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55169411A Pending JPS5791812A (en) | 1980-12-01 | 1980-12-01 | Changing method of drooping quantity for speed controller of rolling mill |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5791812A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110052498A (en) * | 2019-04-25 | 2019-07-26 | 首钢集团有限公司 | A kind of method and device judging planisher jockey pulley skidding position and time |
-
1980
- 1980-12-01 JP JP55169411A patent/JPS5791812A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110052498A (en) * | 2019-04-25 | 2019-07-26 | 首钢集团有限公司 | A kind of method and device judging planisher jockey pulley skidding position and time |
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