JPS57187114A - Manufacture of square steel pipe - Google Patents

Manufacture of square steel pipe

Info

Publication number
JPS57187114A
JPS57187114A JP7282281A JP7282281A JPS57187114A JP S57187114 A JPS57187114 A JP S57187114A JP 7282281 A JP7282281 A JP 7282281A JP 7282281 A JP7282281 A JP 7282281A JP S57187114 A JPS57187114 A JP S57187114A
Authority
JP
Japan
Prior art keywords
pipe
rolls
roll
rolling
steel pipe
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
JP7282281A
Other languages
Japanese (ja)
Other versions
JPH0417727B2 (en
Inventor
Ryosuke Kuramoto
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.)
Nakata Manufacturing Co Ltd
Original Assignee
Nakata Manufacturing 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 Nakata Manufacturing Co Ltd filed Critical Nakata Manufacturing Co Ltd
Priority to JP7282281A priority Critical patent/JPS57187114A/en
Publication of JPS57187114A publication Critical patent/JPS57187114A/en
Publication of JPH0417727B2 publication Critical patent/JPH0417727B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D15/00Corrugating tubes
    • B21D15/02Corrugating tubes longitudinally

Abstract

PURPOSE:To prevent a square steel pipe from deformation by pressing rolls at the corner positions in the inside of the pipe and to improve the shape accuracy of the pipe, by inserting a mandrel, arranged with plural rolls, into the pipe axis on the way of forming in a continuous roll forming process. CONSTITUTION:An internal roll 20 is provided to the same position, being the axial lines of driving rolls 13 and side rolls 14, in the pipe of the 1st stand of a group of rolling rolls 7. Then, a steel pipe, passed through a sizing roll stand 6, is rolled, first, by a prescribed rolling by the driving rolls 13 and is pressed on the side rolls 14, immediately after the rolling, and rolled from all directions. At this time, each roll 29 of the roll 20 in the pipe is pressed from the inside at the adjacent position of the corner part of the square pipe. Thus, the determination of driving position of the pipe circumference is promoted to prevent the generation of the deformation, etc. by the rolling forces of rolls 13 and 14.
JP7282281A 1981-05-13 1981-05-13 Manufacture of square steel pipe Granted JPS57187114A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7282281A JPS57187114A (en) 1981-05-13 1981-05-13 Manufacture of square steel pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7282281A JPS57187114A (en) 1981-05-13 1981-05-13 Manufacture of square steel pipe

Publications (2)

Publication Number Publication Date
JPS57187114A true JPS57187114A (en) 1982-11-17
JPH0417727B2 JPH0417727B2 (en) 1992-03-26

Family

ID=13500484

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7282281A Granted JPS57187114A (en) 1981-05-13 1981-05-13 Manufacture of square steel pipe

Country Status (1)

Country Link
JP (1) JPS57187114A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07284844A (en) * 1994-02-28 1995-10-31 Toyo Tokushu Kogyo Kk Method and device for manufacturing special shaped tube
JP2002035847A (en) * 2000-07-19 2002-02-05 Sekisui House Ltd Roll forming device
US8020422B2 (en) * 2007-03-14 2011-09-20 Kabushiki Kaisha Kunitec Tubular product and manufacturing method and manufacturing device thereof
JP2018023980A (en) * 2016-08-08 2018-02-15 日鐵住金建材株式会社 Manufacturing device and method of grooved metal pipe
JP2018089633A (en) * 2016-11-30 2018-06-14 日鐵住金建材株式会社 Manufacturing device and manufacturing method for grooved metal pipe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07284844A (en) * 1994-02-28 1995-10-31 Toyo Tokushu Kogyo Kk Method and device for manufacturing special shaped tube
JP2002035847A (en) * 2000-07-19 2002-02-05 Sekisui House Ltd Roll forming device
US8020422B2 (en) * 2007-03-14 2011-09-20 Kabushiki Kaisha Kunitec Tubular product and manufacturing method and manufacturing device thereof
JP2018023980A (en) * 2016-08-08 2018-02-15 日鐵住金建材株式会社 Manufacturing device and method of grooved metal pipe
JP2018089633A (en) * 2016-11-30 2018-06-14 日鐵住金建材株式会社 Manufacturing device and manufacturing method for grooved metal pipe

Also Published As

Publication number Publication date
JPH0417727B2 (en) 1992-03-26

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