JPS5514136A - Control unit for rolling of steel bar product - Google Patents

Control unit for rolling of steel bar product

Info

Publication number
JPS5514136A
JPS5514136A JP8576578A JP8576578A JPS5514136A JP S5514136 A JPS5514136 A JP S5514136A JP 8576578 A JP8576578 A JP 8576578A JP 8576578 A JP8576578 A JP 8576578A JP S5514136 A JPS5514136 A JP S5514136A
Authority
JP
Japan
Prior art keywords
motor
current
circuit
bite
drawing roll
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
Application number
JP8576578A
Other languages
Japanese (ja)
Other versions
JPS5921243B2 (en
Inventor
Hideki Yamazaki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP53085765A priority Critical patent/JPS5921243B2/en
Publication of JPS5514136A publication Critical patent/JPS5514136A/en
Publication of JPS5921243B2 publication Critical patent/JPS5921243B2/en
Expired legal-status Critical Current

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
    • B21B37/48—Tension control; Compression control
    • B21B37/52—Tension control; Compression control by 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
    • B21B1/463—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 continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/06—Threading
    • B21B2273/08—Threading-in or before threading-in
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/006—Pinch roll sets

Abstract

PURPOSE: To prevent overloading of a drawing roll motor owing to load unbalances by so controlling the motor current of the drawing roll as to become constant by the detection outputs immediately before the leading end of a slab is bitten to the continuous casting and rolling mills and the bite condition.
CONSTITUTION: Immediately before a slab 4 is bitten in a roughing mill 12, the signal from a detector 20 causes the current of the motor 11 of a drawing roll 5 to be read in a current read circuit 22 for a fixed time and to be stored in a circuit 24. Next, a detector 21 detects the bite and has the current of the motor 11 immediately after the bite stored in the circuit 24. These go through a comparator 25 and judgement circuit 26 and when the difference thereof exceeds the specified range, a correction signal is applied via speed correcting circuit 27 to an adder 15 which in turn corrects the speed of the drive motor 13 of the roughing mill 12, whereby the current of the motor 11 is so controlled as to become the same before and after the bite.
COPYRIGHT: (C)1980,JPO&Japio
JP53085765A 1978-07-14 1978-07-14 Slab rolling control device Expired JPS5921243B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53085765A JPS5921243B2 (en) 1978-07-14 1978-07-14 Slab rolling control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53085765A JPS5921243B2 (en) 1978-07-14 1978-07-14 Slab rolling control device

Publications (2)

Publication Number Publication Date
JPS5514136A true JPS5514136A (en) 1980-01-31
JPS5921243B2 JPS5921243B2 (en) 1984-05-18

Family

ID=13867956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53085765A Expired JPS5921243B2 (en) 1978-07-14 1978-07-14 Slab rolling control device

Country Status (1)

Country Link
JP (1) JPS5921243B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59193709A (en) * 1983-04-19 1984-11-02 Toshiba Corp Speed control device of rolling mill
KR100368237B1 (en) * 1998-12-22 2003-03-17 주식회사 포스코 Apparatus for protecting abnormal drive of billet guide lift
JP2010253550A (en) * 2009-04-01 2010-11-11 Nippon Steel Engineering Co Ltd Method for controlling motor for driving rolls of rolling stand
CN107716564A (en) * 2017-10-27 2018-02-23 宝钢特钢韶关有限公司 Wire and rod continuous rolling rolled piece detection method and detection means

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59193709A (en) * 1983-04-19 1984-11-02 Toshiba Corp Speed control device of rolling mill
JPH0424122B2 (en) * 1983-04-19 1992-04-24 Tokyo Shibaura Electric Co
KR100368237B1 (en) * 1998-12-22 2003-03-17 주식회사 포스코 Apparatus for protecting abnormal drive of billet guide lift
JP2010253550A (en) * 2009-04-01 2010-11-11 Nippon Steel Engineering Co Ltd Method for controlling motor for driving rolls of rolling stand
CN107716564A (en) * 2017-10-27 2018-02-23 宝钢特钢韶关有限公司 Wire and rod continuous rolling rolled piece detection method and detection means

Also Published As

Publication number Publication date
JPS5921243B2 (en) 1984-05-18

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