JPS5722809A - Method for controlling rolling of pipe - Google Patents

Method for controlling rolling of pipe

Info

Publication number
JPS5722809A
JPS5722809A JP9548780A JP9548780A JPS5722809A JP S5722809 A JPS5722809 A JP S5722809A JP 9548780 A JP9548780 A JP 9548780A JP 9548780 A JP9548780 A JP 9548780A JP S5722809 A JPS5722809 A JP S5722809A
Authority
JP
Japan
Prior art keywords
pipe
diameter
bar
mandrel
mandrel bar
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
JP9548780A
Other languages
Japanese (ja)
Inventor
Takeo Yamada
Chihiro Hayashi
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP9548780A priority Critical patent/JPS5722809A/en
Publication of JPS5722809A publication Critical patent/JPS5722809A/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 efficiently suppress the variance in the length or wall thickness of a pipe by setting and controlling roll gaps and roll peripheral speeds based on the average diameter of a mandrel bar and the weight of a material to be rolled in a continous elongator. CONSTITUTION:A blank pipe 1 having the wall thickness of a round ingot pierced with a piercer is passed therein with a mandrel bar 2, and in this state it is passed through the pairing rolling rolls 31a-38a in respective stands 31-38 of mandrel mills. It is then rolled by the rolling rolls 31a-38a which are set and controlled of their roll gaps and roll peripheral speeds by a control part NC. In this case, the weight of a round ingot which is a material for the pipe 1 is measured by a known method prior to the piercing with the piercer. Also, the diameter of the mandrel bar 2 is actually measured and its average diameter is obtained prior to the insertion into the blank pipe. Since the diameter of the bar 2 changes with abrasion, it is actually measured at every use or is empirically determined based on use hystories.
JP9548780A 1980-07-11 1980-07-11 Method for controlling rolling of pipe Pending JPS5722809A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9548780A JPS5722809A (en) 1980-07-11 1980-07-11 Method for controlling rolling of pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9548780A JPS5722809A (en) 1980-07-11 1980-07-11 Method for controlling rolling of pipe

Publications (1)

Publication Number Publication Date
JPS5722809A true JPS5722809A (en) 1982-02-05

Family

ID=14138953

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9548780A Pending JPS5722809A (en) 1980-07-11 1980-07-11 Method for controlling rolling of pipe

Country Status (1)

Country Link
JP (1) JPS5722809A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5942293U (en) * 1982-09-11 1984-03-19 松下電工株式会社 multi-layer joinery
JPS5966909A (en) * 1982-10-12 1984-04-16 Nippon Steel Corp Controlling method of set value in mandrel mill
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
JP2021171806A (en) * 2020-04-28 2021-11-01 Ｊｆｅスチール株式会社 Rolling support model generation method, rolling support method, seamless steel pipe manufacturing method, machine learning device, and rolling support device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5942293U (en) * 1982-09-11 1984-03-19 松下電工株式会社 multi-layer joinery
JPS5966909A (en) * 1982-10-12 1984-04-16 Nippon Steel Corp Controlling method of set value in mandrel mill
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
JP2021171806A (en) * 2020-04-28 2021-11-01 Ｊｆｅスチール株式会社 Rolling support model generation method, rolling support method, seamless steel pipe manufacturing method, machine learning device, and rolling support device

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