JPS5775209A - Pipe piercing mill and its tension controlling method - Google Patents

Pipe piercing mill and its tension controlling method

Info

Publication number
JPS5775209A
JPS5775209A JP55152682A JP15268280A JPS5775209A JP S5775209 A JPS5775209 A JP S5775209A JP 55152682 A JP55152682 A JP 55152682A JP 15268280 A JP15268280 A JP 15268280A JP S5775209 A JPS5775209 A JP S5775209A
Authority
JP
Japan
Prior art keywords
rolling
mandrel
pipe
tension
rolls
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
JP55152682A
Other languages
Japanese (ja)
Other versions
JPH029881B2 (en
Inventor
Akihiro Tanaka
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 JP55152682A priority Critical patent/JPS5775209A/en
Publication of JPS5775209A publication Critical patent/JPS5775209A/en
Publication of JPH029881B2 publication Critical patent/JPH029881B2/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 interstand tension with a high accuracy in a pipe pirecing mill constituted of a mandrel and grooved many rolls, by controlling the rotational speed of motors for driving grooved rolls on the basis of a preset control model for the rolling process. CONSTITUTION:A mandrel 3 is inserted into a pipe blank 11 to be rolled, and a rolling process for reducing the wall thickness is appllied to the pipe blank 11 by many grooved rolls r1-rn; hereupon, the tension acting on the mandrel 3 is detected by a load cell 12 attached to the mandrel 3 or the driving mechanism of the mandrel 3. Then, the rolling load and rolling torque acting on the grooved rolls r1-rn are detected; the rotational speed of grooved rolls is controlled according to these detected values of rolling load and rolling torque on the basis of a preset control model for the rolling process; hereby, the tension or compression force acting on the pipe blank 11 is high accurately controlled to a proper value corresponding to the rolling condition, and a product pipe with uniform and exact diameter, wall thickness and roundness is manufactured.
JP55152682A 1980-10-30 1980-10-30 Pipe piercing mill and its tension controlling method Granted JPS5775209A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55152682A JPS5775209A (en) 1980-10-30 1980-10-30 Pipe piercing mill and its tension controlling method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55152682A JPS5775209A (en) 1980-10-30 1980-10-30 Pipe piercing mill and its tension controlling method

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP18178889A Division JPH0252108A (en) 1989-07-14 1989-07-14 Method for deciding changing time of mandrel

Publications (2)

Publication Number Publication Date
JPS5775209A true JPS5775209A (en) 1982-05-11
JPH029881B2 JPH029881B2 (en) 1990-03-05

Family

ID=15545803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55152682A Granted JPS5775209A (en) 1980-10-30 1980-10-30 Pipe piercing mill and its tension controlling method

Country Status (1)

Country Link
JP (1) JPS5775209A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5961507A (en) * 1982-09-30 1984-04-07 Toshiba Corp Method for controlling tension of mandrel bar
JPS5976609A (en) * 1982-10-22 1984-05-01 Toshiba Corp Method for controlling tension of mandrel bar in piercing mill
JPS6114010A (en) * 1984-06-29 1986-01-22 Nippon Kokan Kk <Nkk> Method for controlling rolling with mandrel mill
JPS61296914A (en) * 1985-06-24 1986-12-27 Fuji Electric Co Ltd Control apparatus for mandrel pipe rolling
CN101972778A (en) * 2010-09-09 2011-02-16 西北工业大学 Method for determining stable formation domain for radial-axial ring rolling

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5354931U (en) * 1976-10-13 1978-05-11
JPS53149858A (en) * 1977-06-03 1978-12-27 Hitachi Ltd Controlling method for wall thickness of seamless pipe in rolling mill
JPS54126654A (en) * 1978-03-15 1979-10-02 Mitsubishi Heavy Ind Ltd Method and apparatus for hot rolling of seamless pipe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5354931U (en) * 1976-10-13 1978-05-11
JPS53149858A (en) * 1977-06-03 1978-12-27 Hitachi Ltd Controlling method for wall thickness of seamless pipe in rolling mill
JPS54126654A (en) * 1978-03-15 1979-10-02 Mitsubishi Heavy Ind Ltd Method and apparatus for hot rolling of seamless pipe

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5961507A (en) * 1982-09-30 1984-04-07 Toshiba Corp Method for controlling tension of mandrel bar
JPS5976609A (en) * 1982-10-22 1984-05-01 Toshiba Corp Method for controlling tension of mandrel bar in piercing mill
JPS6114010A (en) * 1984-06-29 1986-01-22 Nippon Kokan Kk <Nkk> Method for controlling rolling with mandrel mill
JPH0569606B2 (en) * 1984-06-29 1993-10-01 Nippon Kokan Kk
JPS61296914A (en) * 1985-06-24 1986-12-27 Fuji Electric Co Ltd Control apparatus for mandrel pipe rolling
CN101972778A (en) * 2010-09-09 2011-02-16 西北工业大学 Method for determining stable formation domain for radial-axial ring rolling

Also Published As

Publication number Publication date
JPH029881B2 (en) 1990-03-05

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