JPS61137612A - Skew rolling method of metallic pipe and plug used for rolling - Google Patents

Skew rolling method of metallic pipe and plug used for rolling

Info

Publication number
JPS61137612A
JPS61137612A JP25977684A JP25977684A JPS61137612A JP S61137612 A JPS61137612 A JP S61137612A JP 25977684 A JP25977684 A JP 25977684A JP 25977684 A JP25977684 A JP 25977684A JP S61137612 A JPS61137612 A JP S61137612A
Authority
JP
Japan
Prior art keywords
rolling
plug
skew
roll
rolled
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
JP25977684A
Other languages
Japanese (ja)
Inventor
Yutaka Kano
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 JP25977684A priority Critical patent/JPS61137612A/en
Publication of JPS61137612A publication Critical patent/JPS61137612A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B25/00Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B19/00Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling Diescher mills, Stiefel disc piercers, Stiefel rotary piercers
    • B21B19/04Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills

Abstract

PURPOSE:To prevent the wall-thickness deviation of a metallic pipe by rolling again a part, rolled by a roll of one side and a reeling part of plug, by a roll of the other side and the reeling part of plug, in piercing the pipe by skew rolls. CONSTITUTION:With respect to a plug 2 used for skew rolling, the length LR of a reeling part 22 in the axial direction of plug 2 is decided by the relation between the outer diameter DS of a stock B after rolling and the slant angle betaof skew rolls 1(l), 1(r). In case of piercing the stock B; the rolled part, rolled by the roll 1(l) of one side and the part 22, is rolled again by the other roll 1(r) and the part 22. In this way, a metallic pipe having uniform wall thickness is obtained regardless of its circumferential position.
JP25977684A 1984-12-07 1984-12-07 Skew rolling method of metallic pipe and plug used for rolling Pending JPS61137612A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25977684A JPS61137612A (en) 1984-12-07 1984-12-07 Skew rolling method of metallic pipe and plug used for rolling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25977684A JPS61137612A (en) 1984-12-07 1984-12-07 Skew rolling method of metallic pipe and plug used for rolling

Publications (1)

Publication Number Publication Date
JPS61137612A true JPS61137612A (en) 1986-06-25

Family

ID=17338810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25977684A Pending JPS61137612A (en) 1984-12-07 1984-12-07 Skew rolling method of metallic pipe and plug used for rolling

Country Status (1)

Country Link
JP (1) JPS61137612A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63140713A (en) * 1986-12-04 1988-06-13 Kawasaki Steel Corp Plug of skew roll rolling mill
JPH04147706A (en) * 1990-10-12 1992-05-21 Kawasaki Steel Corp Plug for producing seamless steel pipe
EP0743106A1 (en) * 1995-05-19 1996-11-20 Nkk Corporation Method for manufacturing seamless pipe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63140713A (en) * 1986-12-04 1988-06-13 Kawasaki Steel Corp Plug of skew roll rolling mill
JPH04147706A (en) * 1990-10-12 1992-05-21 Kawasaki Steel Corp Plug for producing seamless steel pipe
EP0743106A1 (en) * 1995-05-19 1996-11-20 Nkk Corporation Method for manufacturing seamless pipe
US5778714A (en) * 1995-05-19 1998-07-14 Nkk Corporation Method for manufacturing seamless pipe
US6073331A (en) * 1995-05-19 2000-06-13 Nkk Corporation Method for manufacturing seamless pipe

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