JPS5725207A - Rolling mill for making pipe - Google Patents

Rolling mill for making pipe

Info

Publication number
JPS5725207A
JPS5725207A JP9846280A JP9846280A JPS5725207A JP S5725207 A JPS5725207 A JP S5725207A JP 9846280 A JP9846280 A JP 9846280A JP 9846280 A JP9846280 A JP 9846280A JP S5725207 A JPS5725207 A JP S5725207A
Authority
JP
Japan
Prior art keywords
signals
bar
screw
diameter
rolling
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
JP9846280A
Other languages
Japanese (ja)
Inventor
Hisashi Honjo
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 JP9846280A priority Critical patent/JPS5725207A/en
Publication of JPS5725207A publication Critical patent/JPS5725207A/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

Landscapes

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

Abstract

PURPOSE:To control wall thickness surely by feeding the signals for the longitudinal movement extent of a mandrel bar measured with measuring devices to an arithmetic setting circuit, and controlling the rolling reduction of rolling rolls with the arithmetic setting device based on these signals. CONSTITUTION:In a device of rolling and making pipe by inserting a mandrel bar 2, the longitudinal movement extent of the bar 2 is detected with sensors 12, and the signals 9 based on this movement extent are fed to an arithmetic setting device 10. The device 10 operates the screw-down positions of roll screw-down cylinders 5 and adjust the screw-down of the cylinders 5 via servovalves 7 by the control signals 15 comparing said signals with set values. Therefore, the wall thickness of a pipe material 1 is automatically and uniformly controlled. In some cases, the diameter of the bar 2 is measured with a diameter measuring device 16, and the signal thereof is introduced into the device 10 which corrects the signal 15 according to the change in said diameter.
JP9846280A 1980-07-18 1980-07-18 Rolling mill for making pipe Pending JPS5725207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9846280A JPS5725207A (en) 1980-07-18 1980-07-18 Rolling mill for making pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9846280A JPS5725207A (en) 1980-07-18 1980-07-18 Rolling mill for making pipe

Publications (1)

Publication Number Publication Date
JPS5725207A true JPS5725207A (en) 1982-02-10

Family

ID=14220355

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9846280A Pending JPS5725207A (en) 1980-07-18 1980-07-18 Rolling mill for making pipe

Country Status (1)

Country Link
JP (1) JPS5725207A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60162518A (en) * 1984-01-31 1985-08-24 Sumitomo Metal Ind Ltd Pipe rolling controlling method
JPS6114010A (en) * 1984-06-29 1986-01-22 Nippon Kokan Kk <Nkk> Method for controlling rolling with mandrel mill

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60162518A (en) * 1984-01-31 1985-08-24 Sumitomo Metal Ind Ltd Pipe rolling controlling method
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

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