JPS5747517A - Method and apparatus for controlling rolling speed of mandrel mill - Google Patents

Method and apparatus for controlling rolling speed of mandrel mill

Info

Publication number
JPS5747517A
JPS5747517A JP55122688A JP12268880A JPS5747517A JP S5747517 A JPS5747517 A JP S5747517A JP 55122688 A JP55122688 A JP 55122688A JP 12268880 A JP12268880 A JP 12268880A JP S5747517 A JPS5747517 A JP S5747517A
Authority
JP
Japan
Prior art keywords
detecting
arithmetic unit
rolling
mandrel bar
mandrel mill
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
JP55122688A
Other languages
Japanese (ja)
Inventor
Hisashi Honjo
Heiji Kato
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.)
IHI Corp
Original Assignee
IHI 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 IHI Corp filed Critical IHI Corp
Priority to JP55122688A priority Critical patent/JPS5747517A/en
Publication of JPS5747517A publication Critical patent/JPS5747517A/en
Pending 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
    • B21B37/78—Control of tube rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
    • B21B17/04—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length in a continuous process

Abstract

PURPOSE:To prevent the generation of the bulging phenomenon in a rolled pipe, and to perform a rolling work under a good condition, by controlling the rotational speed of each rolling roll of each rolling stand of a mandrel mill so as to make the friction force between a mandrel bar and the rolled pipe. CONSTITUTION:A detector 41-8 for detecting the drop-out of the pipe end is installed in each rolling stand 31-8, and its detecting signal A is inputted to an arithmetic unit 5. A pulling force detector 9 for detecting the pulling force of a mandrel bar 1 is installed, and its detecting signal B, as a friction signal for the friction force between the mandrel bar 1 and the rolled pipe, is inputted to the arithmetic unit 5. Then, the rotational speed of each rolling roll 11 is separately controlled according to a speed setting output C operated by the arithmetic unit 5.
JP55122688A 1980-09-04 1980-09-04 Method and apparatus for controlling rolling speed of mandrel mill Pending JPS5747517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55122688A JPS5747517A (en) 1980-09-04 1980-09-04 Method and apparatus for controlling rolling speed of mandrel mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55122688A JPS5747517A (en) 1980-09-04 1980-09-04 Method and apparatus for controlling rolling speed of mandrel mill

Publications (1)

Publication Number Publication Date
JPS5747517A true JPS5747517A (en) 1982-03-18

Family

ID=14842156

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55122688A Pending JPS5747517A (en) 1980-09-04 1980-09-04 Method and apparatus for controlling rolling speed of mandrel mill

Country Status (1)

Country Link
JP (1) JPS5747517A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63188896A (en) * 1987-01-31 1988-08-04 Toshiba Corp Nonvolatile semiconductor memory
JPH05237515A (en) * 1991-11-15 1993-09-17 Mannesmann Ag Method for longitudinally rolling seamless pipe
CN113996659A (en) * 2020-07-27 2022-02-01 大冶特殊钢有限公司 Steel feeding method applicable to Assel pipe rolling mill

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63188896A (en) * 1987-01-31 1988-08-04 Toshiba Corp Nonvolatile semiconductor memory
JPH05237515A (en) * 1991-11-15 1993-09-17 Mannesmann Ag Method for longitudinally rolling seamless pipe
CN113996659A (en) * 2020-07-27 2022-02-01 大冶特殊钢有限公司 Steel feeding method applicable to Assel pipe rolling mill
CN113996659B (en) * 2020-07-27 2023-09-29 大冶特殊钢有限公司 Steel feeding method for asel pipe mill

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