JPS5791812A - Changing method of drooping quantity for speed controller of rolling mill - Google Patents

Changing method of drooping quantity for speed controller of rolling mill

Info

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
Application number
JP55169411A
Other languages
Japanese (ja)
Inventor
Hifumi Tsukuda
Akishige Yoshida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP55169411A priority Critical patent/JPS5791812A/en
Publication of JPS5791812A publication Critical patent/JPS5791812A/en
Pending legal-status Critical Current

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  • 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
JP55169411A 1980-12-01 1980-12-01 Changing method of drooping quantity for speed controller of rolling mill Pending JPS5791812A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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