JPS5527421A - Rolling method - Google Patents

Rolling method

Info

Publication number
JPS5527421A
JPS5527421A JP9906878A JP9906878A JPS5527421A JP S5527421 A JPS5527421 A JP S5527421A JP 9906878 A JP9906878 A JP 9906878A JP 9906878 A JP9906878 A JP 9906878A JP S5527421 A JPS5527421 A JP S5527421A
Authority
JP
Japan
Prior art keywords
strip
plate thickness
rolling
leading
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
JP9906878A
Other languages
Japanese (ja)
Inventor
Yoshihiko Iida
Tsuneo Nakanishi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9906878A priority Critical patent/JPS5527421A/en
Publication of JPS5527421A publication Critical patent/JPS5527421A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16Control of thickness, width, diameter or other transverse dimensions
    • B21B37/18Automatic gauge control
    • B21B37/20Automatic gauge control in tandem mills

Abstract

PURPOSE:To eliminate the off gauge at the leading and trailing ends at the cold rolling and make biting easy by rolling the leading or trailing end of a strip thiner than the normal plate thickness portion in the central part in the longitudinal direction. CONSTITUTION:With a hot strip finishing plant 9, the pass of the leading end of the material is detected with a rolling load detector 7 and the screw down device 8 of the F6 stand is moved upward according to the preset time relation, whereby the roll gap is increased. As a result, the plate thickness at the leading end of the strip becomes subsequently thicker. In the central part in the longitudinal direction, rolling of a constant plate thickness is accomplished. When the trailing end of the strip passes the F1 stand, this is detected with a rolling load detector 6 to lower the screw-down device 8 of the F6 stand and decrease the roll gap. The plate thickness at the trailing end of the strip will then become gradually thinner. This strip coil makes biting to cold rolling rolls good and enables the strip of the plate thickness uniform in the lengthwise direction to be obtained.
JP9906878A 1978-08-16 1978-08-16 Rolling method Pending JPS5527421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9906878A JPS5527421A (en) 1978-08-16 1978-08-16 Rolling method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9906878A JPS5527421A (en) 1978-08-16 1978-08-16 Rolling method

Publications (1)

Publication Number Publication Date
JPS5527421A true JPS5527421A (en) 1980-02-27

Family

ID=14237498

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9906878A Pending JPS5527421A (en) 1978-08-16 1978-08-16 Rolling method

Country Status (1)

Country Link
JP (1) JPS5527421A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008264807A (en) * 2007-04-17 2008-11-06 Nakayama Steel Works Ltd Rolling method
CN112337970A (en) * 2020-10-22 2021-02-09 河南中孚高精铝材有限公司 Double-frame cold rolling mill bottoming thick head control method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008264807A (en) * 2007-04-17 2008-11-06 Nakayama Steel Works Ltd Rolling method
CN112337970A (en) * 2020-10-22 2021-02-09 河南中孚高精铝材有限公司 Double-frame cold rolling mill bottoming thick head control method

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