JPS57127525A - Manufacture of metallic tube - Google Patents

Manufacture of metallic tube

Info

Publication number
JPS57127525A
JPS57127525A JP1364081A JP1364081A JPS57127525A JP S57127525 A JPS57127525 A JP S57127525A JP 1364081 A JP1364081 A JP 1364081A JP 1364081 A JP1364081 A JP 1364081A JP S57127525 A JPS57127525 A JP S57127525A
Authority
JP
Japan
Prior art keywords
rolls
band steel
side edges
central part
edge
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
JP1364081A
Other languages
Japanese (ja)
Other versions
JPS644853B2 (en
Inventor
Takeshi Masui
Takeo Yamada
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
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP1364081A priority Critical patent/JPS57127525A/en
Publication of JPS57127525A publication Critical patent/JPS57127525A/en
Publication of JPS644853B2 publication Critical patent/JPS644853B2/ja
Granted 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

Abstract

PURPOSE:To prevent occurrence of waving and buckling of edge and reduce defective butting and welding sharply by peviously giving an extensional deformation larger than the edge to the central part of a band steel. CONSTITUTION:Variable crown rolls 1, 1 give the amount of roll crown by a hydraulic device so that an extensional deformation larger than both side edges E, E is given to the central part of a band steel B. Then, the band steel B is bent from C-shaped section to nealy O-shaped section in which two side edges E, E are opposed through side rolls 2, break down rolls 3 and fin pass rolls 4 that constitute forming roll group for bending the band steel B. Finally, both edges E, E are passed through squeeze rolls 5 while being heated and molten, and the both side edges E, E are butted and welded to form a tube P.
JP1364081A 1981-01-30 1981-01-30 Manufacture of metallic tube Granted JPS57127525A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1364081A JPS57127525A (en) 1981-01-30 1981-01-30 Manufacture of metallic tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1364081A JPS57127525A (en) 1981-01-30 1981-01-30 Manufacture of metallic tube

Publications (2)

Publication Number Publication Date
JPS57127525A true JPS57127525A (en) 1982-08-07
JPS644853B2 JPS644853B2 (en) 1989-01-27

Family

ID=11838831

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1364081A Granted JPS57127525A (en) 1981-01-30 1981-01-30 Manufacture of metallic tube

Country Status (1)

Country Link
JP (1) JPS57127525A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5370066A (en) * 1976-12-04 1978-06-22 Nippon Steel Corp Roller forming method of tubular substance

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5370066A (en) * 1976-12-04 1978-06-22 Nippon Steel Corp Roller forming method of tubular substance

Also Published As

Publication number Publication date
JPS644853B2 (en) 1989-01-27

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