JPS57149017A - Forming method for preventing warping of electric welded steel pipe - Google Patents

Forming method for preventing warping of electric welded steel pipe

Info

Publication number
JPS57149017A
JPS57149017A JP3502081A JP3502081A JPS57149017A JP S57149017 A JPS57149017 A JP S57149017A JP 3502081 A JP3502081 A JP 3502081A JP 3502081 A JP3502081 A JP 3502081A JP S57149017 A JPS57149017 A JP S57149017A
Authority
JP
Japan
Prior art keywords
zeta
steel pipe
welded steel
forming
electric welded
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
JP3502081A
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 JP3502081A priority Critical patent/JPS57149017A/en
Priority to DE8282101751T priority patent/DE3274724D1/en
Priority to EP82101751A priority patent/EP0059957B1/en
Priority to CA000397991A priority patent/CA1176086A/en
Publication of JPS57149017A publication Critical patent/JPS57149017A/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 prevent occurrence of warping of a blank pipe in longitudinal direction and manufacture an electric welded steel pipe excellent in shape and dimensional accuracy stably in cage roll forming accompanied by downhill forming by combining the press forming conditions properly. CONSTITUTION:A strip 10 is formed to cylindrical form by various rolls while descending the amount of down holl DH and finished by fin pass rolls 20, 22, 24, and further welded by a squeeze roll 28 to become an electric welded steel pipe 26. In these processes, by forming the strip under conditions within the range where relations R>=-0.542eta+1.104, R<=1.750eta+0.875, R<=-0.444eta+ 1.533, R<=-6.00eta+8.20, and zeta>=-250eta+125, zeta>=75, zeta>=250eta-225 where eta is downhill coefficient (=DH/D D: outer diameter of the tube) R is fin pass total reduction, zeta is first fin pass reduction, hold, a blank pipe free from occurrence of warping in longitudinal direction can be obtained.
JP3502081A 1981-03-11 1981-03-11 Forming method for preventing warping of electric welded steel pipe Pending JPS57149017A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP3502081A JPS57149017A (en) 1981-03-11 1981-03-11 Forming method for preventing warping of 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
JP3502081A JPS57149017A (en) 1981-03-11 1981-03-11 Forming method for preventing warping of electric welded steel pipe

Publications (1)

Publication Number Publication Date
JPS57149017A true JPS57149017A (en) 1982-09-14

Family

ID=12430376

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3502081A Pending JPS57149017A (en) 1981-03-11 1981-03-11 Forming method for preventing warping of electric welded steel pipe

Country Status (1)

Country Link
JP (1) JPS57149017A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01241324A (en) * 1988-03-23 1989-09-26 Sumitomo Metal Ind Ltd Manufacture of electric welded tube at high temperature

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01241324A (en) * 1988-03-23 1989-09-26 Sumitomo Metal Ind Ltd Manufacture of electric welded tube at high temperature

Similar Documents

Publication Publication Date Title
JPS55156618A (en) Manufacture of thick-walled steel pipe
JPS6415216A (en) Grooving method for inner surface of metallic pipe
SU724078A3 (en) Sleeve for making seamless tubes
JPS57149017A (en) Forming method for preventing warping of electric welded steel pipe
JPS55156619A (en) Manufacture of thick-walled steel pipe
GB909319A (en) Solderable composite aluminium wire
IL68762A (en) Forming of extrusion dies
JPS57187114A (en) Manufacture of square steel pipe
JPS54130462A (en) Cold drawing method for steel pipe with fin of irregular shape
JPS5717340A (en) Method for working of screwless coupling
JPS57149016A (en) Edge wave preventing and forming method for electric welded steel pipe
SU1234023A1 (en) Gauge for transverse rolling of hollow work on mandrel
US3537289A (en) Method of producing webbed steel pipes
JPS56121988A (en) Manufacture of heat pipe
SU575155A1 (en) Pipe-making die set
JPS55141323A (en) Edge forming method in manufacturing electric resistance welded steel pipe
JPH04197513A (en) Method for drawing core of coil like steel tube
JPS5711717A (en) Manufacture of laminated metallic pipe
JPS5881517A (en) Continuous forming method for long halved pipe
JPS56111535A (en) Production of rolled lead fin tube
JPS5750212A (en) Manufacture of square metallic blank pipe
JPS55112131A (en) Forming method of thick-walled uo steel pipe
JPS57165118A (en) Manufacture of double tube coated with metal of different kind
SU1024129A1 (en) Pilgrim roll groove
JPS5736092A (en) Method and device for production of metallic welded pipe