JPS5739028A - Forming method of blank pipe for electric welded steel pipe - Google Patents

Forming method of blank pipe for electric welded steel pipe

Info

Publication number
JPS5739028A
JPS5739028A JP11428980A JP11428980A JPS5739028A JP S5739028 A JPS5739028 A JP S5739028A JP 11428980 A JP11428980 A JP 11428980A JP 11428980 A JP11428980 A JP 11428980A JP S5739028 A JPS5739028 A JP S5739028A
Authority
JP
Japan
Prior art keywords
rolls
edge
forming
blank pipe
outside
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
JP11428980A
Other languages
Japanese (ja)
Other versions
JPS6315043B2 (en
Inventor
Takaaki Toyooka
Eiichi Yokoyama
Michio Saito
Akio Ejima
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 JP11428980A priority Critical patent/JPS5739028A/en
Publication of JPS5739028A publication Critical patent/JPS5739028A/en
Publication of JPS6315043B2 publication Critical patent/JPS6315043B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE: To prevent sudden compressive deformation at the edge, and to produce electric welded steel pipes of high quality and good appearnace of the welded part, by forming the outside of the seam edge by a continuous embracing and bearing means.
CONSTITUTION: A steel strip S is successively formed to shape a cylinder by breakdown rolls 1, edge forming rolls 2, outside edge rolls 3 and inside cage rolls 4, and after passing through final outside cage rolls 3e, it is formed to a blank pipe P while being continuously embraced and supported of its seaming edge Pe in the blank pipe P by plural groups of edge guide rolls 6 which are installed between the final outside cage rolls 3e and the No.1 fin pass rolls 5. Therefore the forming of the edge Pe in the blank pipe P just before the No.1 fin pass rolls 5 is made stabilized and the forming load of the No.1 fin pass rolls 5 is reduced.
COPYRIGHT: (C)1982,JPO&Japio
JP11428980A 1980-08-20 1980-08-20 Forming method of blank pipe for electric welded steel pipe Granted JPS5739028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11428980A JPS5739028A (en) 1980-08-20 1980-08-20 Forming method of blank pipe for electric welded steel pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11428980A JPS5739028A (en) 1980-08-20 1980-08-20 Forming method of blank pipe for electric welded steel pipe

Publications (2)

Publication Number Publication Date
JPS5739028A true JPS5739028A (en) 1982-03-04
JPS6315043B2 JPS6315043B2 (en) 1988-04-02

Family

ID=14634116

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11428980A Granted JPS5739028A (en) 1980-08-20 1980-08-20 Forming method of blank pipe for electric welded steel pipe

Country Status (1)

Country Link
JP (1) JPS5739028A (en)

Also Published As

Publication number Publication date
JPS6315043B2 (en) 1988-04-02

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