JPS57190722A - Correcting device for steel pipe - Google Patents

Correcting device for steel pipe

Info

Publication number
JPS57190722A
JPS57190722A JP7445381A JP7445381A JPS57190722A JP S57190722 A JPS57190722 A JP S57190722A JP 7445381 A JP7445381 A JP 7445381A JP 7445381 A JP7445381 A JP 7445381A JP S57190722 A JPS57190722 A JP S57190722A
Authority
JP
Japan
Prior art keywords
rolls
steel pipe
stands
bending
curvature
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
JP7445381A
Other languages
Japanese (ja)
Other versions
JPS6033567B2 (en
Inventor
Shinji Akita
Megumi Tanaka
Haruyuki Nakanishi
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 Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP7445381A priority Critical patent/JPS6033567B2/en
Publication of JPS57190722A publication Critical patent/JPS57190722A/en
Publication of JPS6033567B2 publication Critical patent/JPS6033567B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
    • B21D3/04—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes skew to the path of the work

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE:To correct bending of the pipe end and speed up the work by making at least one unit of plural stands provided with concave rolls on the pass line special shape different in radius of curvature of roll profile. CONSTITUTION:Plural units of stands having concave rolls on the pass line are arranged longitudinally to correct bending generated during working of a steel pipe P etc. sent out from a rolling mill. At this time, for instance, rolls 1, 2, 7, 8 of the first and fourth stands are kept as before and the radii of curvature of roll profile of upper rolls 9, 11 and lower rolls 10, 12 of the second and third stands are changed. The contact length (l) between the steel pipe P and rolls 9-12 made long and bending is applied to the steel pipe P. Thus, bending of the pipe end is corrected and the speed of correction is increased.
JP7445381A 1981-05-18 1981-05-18 Steel pipe straightening device Expired JPS6033567B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7445381A JPS6033567B2 (en) 1981-05-18 1981-05-18 Steel pipe straightening device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7445381A JPS6033567B2 (en) 1981-05-18 1981-05-18 Steel pipe straightening device

Publications (2)

Publication Number Publication Date
JPS57190722A true JPS57190722A (en) 1982-11-24
JPS6033567B2 JPS6033567B2 (en) 1985-08-03

Family

ID=13547669

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7445381A Expired JPS6033567B2 (en) 1981-05-18 1981-05-18 Steel pipe straightening device

Country Status (1)

Country Link
JP (1) JPS6033567B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0352716A (en) * 1989-07-19 1991-03-06 Daido Steel Co Ltd Two-roll straightening machine
KR100394398B1 (en) * 2000-08-03 2003-08-09 조청조 Straightening roll device for tube mill pipe
US8006528B2 (en) * 2007-01-16 2011-08-30 Sumitomo Metal Industries, Ltd. Method for producing duplex stainless steel pipe, method for straightening, method for regulating strength, and method for operating straightener

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0352716A (en) * 1989-07-19 1991-03-06 Daido Steel Co Ltd Two-roll straightening machine
KR100394398B1 (en) * 2000-08-03 2003-08-09 조청조 Straightening roll device for tube mill pipe
US8006528B2 (en) * 2007-01-16 2011-08-30 Sumitomo Metal Industries, Ltd. Method for producing duplex stainless steel pipe, method for straightening, method for regulating strength, and method for operating straightener

Also Published As

Publication number Publication date
JPS6033567B2 (en) 1985-08-03

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