JPS6411009A - Manufacture of seamless steel pipe - Google Patents

Manufacture of seamless steel pipe

Info

Publication number
JPS6411009A
JPS6411009A JP62167101A JP16710187A JPS6411009A JP S6411009 A JPS6411009 A JP S6411009A JP 62167101 A JP62167101 A JP 62167101A JP 16710187 A JP16710187 A JP 16710187A JP S6411009 A JPS6411009 A JP S6411009A
Authority
JP
Japan
Prior art keywords
rolling
pipe end
end part
faulty
thickness
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
JP62167101A
Other languages
Japanese (ja)
Inventor
Kenichi Kanezaki
Masatoshi Murayama
Katsuyoshi Ito
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
Nippon Steel 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP62167101A priority Critical patent/JPS6411009A/en
Publication of JPS6411009A publication Critical patent/JPS6411009A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B23/00Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling

Abstract

PURPOSE:To prevent faulty biting and to obtain a seamless steel pipe having a uniform thickness by rolling a thickness of pipe end part in a tapered shape on a rolling stage through a piercing mill or an elongator of Mannessmann type, then subjecting to elongation rolling and rolling the thickness of the pipe end part in a tapered shape. CONSTITUTION:In the stage of rolling the pipe end part in a tapered shape so that the thickness of the pipe end part becomes thinner toward the pipe end the rolling is performed without causing a faulty biting and a faulty shape of the pipe end. Furthermore, the blank pipe is elongation rolled by a succeeding plug mill and at the time of rolling the pipe end part in a tapered shape, a failing to roll caused by the faulty biting, etc., are not caused and the seamless steel pipe having uniform thickness is obtained in the last drawing roll mill.
JP62167101A 1987-07-06 1987-07-06 Manufacture of seamless steel pipe Pending JPS6411009A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62167101A JPS6411009A (en) 1987-07-06 1987-07-06 Manufacture of seamless steel pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62167101A JPS6411009A (en) 1987-07-06 1987-07-06 Manufacture of seamless steel pipe

Publications (1)

Publication Number Publication Date
JPS6411009A true JPS6411009A (en) 1989-01-13

Family

ID=15843446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62167101A Pending JPS6411009A (en) 1987-07-06 1987-07-06 Manufacture of seamless steel pipe

Country Status (1)

Country Link
JP (1) JPS6411009A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012187625A (en) * 2011-03-14 2012-10-04 Sumitomo Metal Ind Ltd Method of cold-rolling seamless tube
WO2013153794A1 (en) * 2012-04-12 2013-10-17 新日鐵住金株式会社 Cold rolling method for seamless pipe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5520764A (en) * 1978-07-27 1980-02-14 Ugine Kuhlmann Method of obtaining highly pure 1*55dinitroo anthraquinone
JPS59209414A (en) * 1983-05-12 1984-11-28 Kawasaki Steel Corp Pipe end thinning rolling method
JPS6116528A (en) * 1985-06-14 1986-01-24 Hitachi Ltd Cleaning device for wafer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5520764A (en) * 1978-07-27 1980-02-14 Ugine Kuhlmann Method of obtaining highly pure 1*55dinitroo anthraquinone
JPS59209414A (en) * 1983-05-12 1984-11-28 Kawasaki Steel Corp Pipe end thinning rolling method
JPS6116528A (en) * 1985-06-14 1986-01-24 Hitachi Ltd Cleaning device for wafer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012187625A (en) * 2011-03-14 2012-10-04 Sumitomo Metal Ind Ltd Method of cold-rolling seamless tube
WO2013153794A1 (en) * 2012-04-12 2013-10-17 新日鐵住金株式会社 Cold rolling method for seamless pipe
JP5408388B1 (en) * 2012-04-12 2014-02-05 新日鐵住金株式会社 Seamless pipe cold rolling method

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