JPS57168715A - Method and device for tension controller of mandrel mill - Google Patents

Method and device for tension controller of mandrel mill

Info

Publication number
JPS57168715A
JPS57168715A JP56052451A JP5245181A JPS57168715A JP S57168715 A JPS57168715 A JP S57168715A JP 56052451 A JP56052451 A JP 56052451A JP 5245181 A JP5245181 A JP 5245181A JP S57168715 A JPS57168715 A JP S57168715A
Authority
JP
Japan
Prior art keywords
tension
mandrel
rolling
shell
detected
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
JP56052451A
Other languages
Japanese (ja)
Other versions
JPH0212641B2 (en
Inventor
Akihiro Tanaka
Makoto Miyashita
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 JP56052451A priority Critical patent/JPS57168715A/en
Publication of JPS57168715A publication Critical patent/JPS57168715A/en
Publication of JPH0212641B2 publication Critical patent/JPH0212641B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

PURPOSE:To control the tension applied to a shell with high precision, by detecting the tensions applied to a mandrel and stand respectively and obtaining the friction coefficient during the rolling and the contact force between the mandrel and the shell after the rolling quantitatively. CONSTITUTION:The tension applied to a mandrel 11 is detected by a mandrel tension detector 14, and at the same time the tension applied to a stand is detected by stand tension detectors 15-1-15-n respectively. Furthermore the rolling load is detected by rolling load detecting load cells 10-1-10-n, and the rolling torque is calculated by a computer 17 and from the voltage and current of motors 19-1-19-n plus the output values of revolving speed detectors 16-1-16-n. The friction coefficient is calculated and stored by the computer 17 from those values of detection. Then the rotational frequency of motors 19-1-19-n is controlled via speed controllers 18-1-18-n in order to set the tension of a shell 12 between stands at a prescribed value.
JP56052451A 1981-04-09 1981-04-09 Method and device for tension controller of mandrel mill Granted JPS57168715A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56052451A JPS57168715A (en) 1981-04-09 1981-04-09 Method and device for tension controller of mandrel mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56052451A JPS57168715A (en) 1981-04-09 1981-04-09 Method and device for tension controller of mandrel mill

Publications (2)

Publication Number Publication Date
JPS57168715A true JPS57168715A (en) 1982-10-18
JPH0212641B2 JPH0212641B2 (en) 1990-03-23

Family

ID=12915083

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56052451A Granted JPS57168715A (en) 1981-04-09 1981-04-09 Method and device for tension controller of mandrel mill

Country Status (1)

Country Link
JP (1) JPS57168715A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147707A (en) * 1983-02-14 1984-08-24 Nippon Kokan Kk <Nkk> Method for controlling tension of mandrel mill
JPH01284408A (en) * 1988-05-11 1989-11-15 Nkk Corp Method for improving bar stripping capability in restrained mandrel mill

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05256721A (en) * 1991-02-27 1993-10-05 Mito Kogyo Kk Checking apparatus for hydraulic circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147707A (en) * 1983-02-14 1984-08-24 Nippon Kokan Kk <Nkk> Method for controlling tension of mandrel mill
JPH01284408A (en) * 1988-05-11 1989-11-15 Nkk Corp Method for improving bar stripping capability in restrained mandrel mill

Also Published As

Publication number Publication date
JPH0212641B2 (en) 1990-03-23

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