JPS5717305A - Continuous rolling installation for seamless pipe - Google Patents

Continuous rolling installation for seamless pipe

Info

Publication number
JPS5717305A
JPS5717305A JP9177780A JP9177780A JPS5717305A JP S5717305 A JPS5717305 A JP S5717305A JP 9177780 A JP9177780 A JP 9177780A JP 9177780 A JP9177780 A JP 9177780A JP S5717305 A JPS5717305 A JP S5717305A
Authority
JP
Japan
Prior art keywords
mandrel
shell
rolls
less
distance
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
JP9177780A
Other languages
Japanese (ja)
Inventor
Masahiro 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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9177780A priority Critical patent/JPS5717305A/en
Publication of JPS5717305A publication Critical patent/JPS5717305A/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
    • 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 minimize the quantity of heat input to a mandrel to be inserted into the shell of a material to be rolled, and continuously roll a seamless pipe of superior durability by controlling the moving speed and moving distance in the rolling direction of said mandrel. CONSTITUTION:A shell 21 of a material to be rolled is fed into between rolls 10- 17, and a mandrel 22 is inserted into the shell 21. The respective rolls 10-17 are disposed with alternate inclinations of 45 deg.. The mandrel 22 is controlled of its speed and position freely by a driving device having a rack 23 and a pinion 24. The moving distance of this mandrel 22 is set not at the distance D between adjacent rolls for finish rolling but at less than the distance E up to the next roll, and the times when part of the mandrel 22 contacts with the rolls via the shell 21 are limited to twice or less. Thereby, the quantity of heat input to the mandrel 22 is reduced to less than a constant value.
JP9177780A 1980-07-07 1980-07-07 Continuous rolling installation for seamless pipe Pending JPS5717305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9177780A JPS5717305A (en) 1980-07-07 1980-07-07 Continuous rolling installation for seamless pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9177780A JPS5717305A (en) 1980-07-07 1980-07-07 Continuous rolling installation for seamless pipe

Publications (1)

Publication Number Publication Date
JPS5717305A true JPS5717305A (en) 1982-01-29

Family

ID=14036010

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9177780A Pending JPS5717305A (en) 1980-07-07 1980-07-07 Continuous rolling installation for seamless pipe

Country Status (1)

Country Link
JP (1) JPS5717305A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4991949A (en) * 1972-09-08 1974-09-03

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4991949A (en) * 1972-09-08 1974-09-03

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