JPS57149016A - Edge wave preventing and forming method for electric welded steel pipe - Google Patents

Edge wave preventing and forming method for electric welded steel pipe

Info

Publication number
JPS57149016A
JPS57149016A JP3501981A JP3501981A JPS57149016A JP S57149016 A JPS57149016 A JP S57149016A JP 3501981 A JP3501981 A JP 3501981A JP 3501981 A JP3501981 A JP 3501981A JP S57149016 A JPS57149016 A JP S57149016A
Authority
JP
Japan
Prior art keywords
rolls
forming
eta
steel pipe
welded steel
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
JP3501981A
Other languages
Japanese (ja)
Inventor
Takaaki Toyooka
Eiichi Yokoyama
Akio Ejima
Yoshitomi Onoda
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP3501981A priority Critical patent/JPS57149016A/en
Priority to DE8282101751T priority patent/DE3274724D1/en
Priority to EP82101751A priority patent/EP0059957B1/en
Priority to CA000397991A priority patent/CA1176086A/en
Publication of JPS57149016A publication Critical patent/JPS57149016A/en
Priority to US06/664,103 priority patent/US4568015A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08—Making tubes with welded or soldered seams

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

PURPOSE:To manufacture an electric welded steel pipe excellent in shape and quality of the weld zone in cage roll forming accompanied by downhill forming, by preventing occurrence of edge wave of joint edge part of the blank pipe by combining press forming conditions properly. CONSTITUTION:A strip 10 undergoes initial and intermediate forming by a break down rolls 12, edge forming rolls 14, outside cage rolls 16 and inside cage rolls 18 and further finish formed by fin pass rolls 20, 22, 24 to become a blank pipe 26. This is upset welded by squeeze rolls 28 to obtain an electric welded steel pipe 29. In these processes, the blank pipe is formed under following conditions: downhill coefficient eta is within the range of 0.3-1.3; fin pass total reduction R is within the range of 0.4-1.5 with the lower limit rising to a peak of eta=0.8 and the upper limit lowering making eta=1.05 a peak; the first fin pass reduction distribution ratio delta is >=50% and the lower limit rises making eta=0.8 a peak.
JP3501981A 1981-03-11 1981-03-11 Edge wave preventing and forming method for electric welded steel pipe Pending JPS57149016A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP3501981A JPS57149016A (en) 1981-03-11 1981-03-11 Edge wave preventing and forming method for electric welded steel pipe
DE8282101751T DE3274724D1 (en) 1981-03-11 1982-03-05 Method of forming electric welded steel tube
EP82101751A EP0059957B1 (en) 1981-03-11 1982-03-05 Method of forming electric welded steel tube
CA000397991A CA1176086A (en) 1981-03-11 1982-03-10 Method of forming electric welded steel tube
US06/664,103 US4568015A (en) 1981-03-11 1984-10-24 Method of forming electric welded steel tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3501981A JPS57149016A (en) 1981-03-11 1981-03-11 Edge wave preventing and forming method for electric welded steel pipe

Publications (1)

Publication Number Publication Date
JPS57149016A true JPS57149016A (en) 1982-09-14

Family

ID=12430351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3501981A Pending JPS57149016A (en) 1981-03-11 1981-03-11 Edge wave preventing and forming method for electric welded steel pipe

Country Status (1)

Country Link
JP (1) JPS57149016A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59125214A (en) * 1982-12-29 1984-07-19 Ishikawajima Harima Heavy Ind Co Ltd Forming method of pipe
JP2009119483A (en) * 2007-11-13 2009-06-04 Jfe Steel Corp Method for manufacturing electric resistance welded tube excellent in characteristic of weld zone

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59125214A (en) * 1982-12-29 1984-07-19 Ishikawajima Harima Heavy Ind Co Ltd Forming method of pipe
JPH0440085B2 (en) * 1982-12-29 1992-07-01 Ishikawajima Harima Heavy Ind
JP2009119483A (en) * 2007-11-13 2009-06-04 Jfe Steel Corp Method for manufacturing electric resistance welded tube excellent in characteristic of weld zone

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