JPS55106611A - Determining method for piercing condition of skew roll piercer - Google Patents

Determining method for piercing condition of skew roll piercer

Info

Publication number
JPS55106611A
JPS55106611A JP1480179A JP1480179A JPS55106611A JP S55106611 A JPS55106611 A JP S55106611A JP 1480179 A JP1480179 A JP 1480179A JP 1480179 A JP1480179 A JP 1480179A JP S55106611 A JPS55106611 A JP S55106611A
Authority
JP
Japan
Prior art keywords
giving
generation
prevent
formula
condition
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
JP1480179A
Other languages
Japanese (ja)
Other versions
JPS5944927B2 (en
Inventor
Yasuhiro Sayama
Fusao Togashi
Akio Ejima
Kichizaemon Nakagawa
Hideo Abe
Shohei Kanari
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 JP54014801A priority Critical patent/JPS5944927B2/en
Publication of JPS55106611A publication Critical patent/JPS55106611A/en
Publication of JPS5944927B2 publication Critical patent/JPS5944927B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/78—Control of tube rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-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 or Stiefel rotary piercers
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills

Abstract

PURPOSE:To prevent the generation of operational troubles, at manufacturing the seamless pipe from the raw material like as the round billet, etc., with the skew roll piercer, by suitably controlling the piercing conditions like as the roll gap, the plug diameter, the forward slip of plug, the guide shoes clearance, etc. CONSTITUTION:The hollow bloom 18 as the seamless pipe is manufactured from the round billet 10 as the raw material, by the skew roll piercer. Hereupon, the gap E of rolls 12, 12, the diameter Dp of plug 14, the forward slip L of plug 14, and the clearance H of guide shoes 16, 16, are determined so as to satisfy formulas I, II, III, IV, V, and VI; where the formula I is for giving the condition to prevent the contact between the rolled material 10 and the end plane of the roll 12; the formula II is for giving the condition to prevent the generation of incorrect biting; the formula III is for giving the condition to prevent the generation of rear jamming; the formula IV is for giving the condition to prevent the generation of flaws in the inner surface; and the formula V, VI, are for giving conditions to lessen the generation of thickness deviation. (Besides, A and B in formulas are constants determined from the skew angle alpha of the roll, and the diameter Db of the raw material 10).
JP54014801A 1979-02-09 1979-02-09 Method for determining drilling conditions for inclined roll drilling machine Expired JPS5944927B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54014801A JPS5944927B2 (en) 1979-02-09 1979-02-09 Method for determining drilling conditions for inclined roll drilling machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54014801A JPS5944927B2 (en) 1979-02-09 1979-02-09 Method for determining drilling conditions for inclined roll drilling machine

Publications (2)

Publication Number Publication Date
JPS55106611A true JPS55106611A (en) 1980-08-15
JPS5944927B2 JPS5944927B2 (en) 1984-11-02

Family

ID=11871137

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54014801A Expired JPS5944927B2 (en) 1979-02-09 1979-02-09 Method for determining drilling conditions for inclined roll drilling machine

Country Status (1)

Country Link
JP (1) JPS5944927B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57115907A (en) * 1981-01-09 1982-07-19 Kawasaki Steel Corp Method for controlling rolling of inclined roll piercing machine
JPS5976602A (en) * 1982-10-26 1984-05-01 Sumitomo Metal Ind Ltd Production of seamless pipe
JPS613605A (en) * 1984-06-15 1986-01-09 Sumitomo Metal Ind Ltd Piercing method with cross helical roll piercer
JPS613606A (en) * 1984-06-15 1986-01-09 Sumitomo Metal Ind Ltd Method for controlling piercing and rolling in cross helical roll piercer
JPH09300006A (en) * 1996-05-15 1997-11-25 Nkk Corp Manufacture of seamless steel tube difficult to be worked
EP1637244A1 (en) * 2003-05-21 2006-03-22 Sumitomo Metal Industries, Ltd. Method of manufacturing seamless tube

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57115907A (en) * 1981-01-09 1982-07-19 Kawasaki Steel Corp Method for controlling rolling of inclined roll piercing machine
JPS5976602A (en) * 1982-10-26 1984-05-01 Sumitomo Metal Ind Ltd Production of seamless pipe
JPS613605A (en) * 1984-06-15 1986-01-09 Sumitomo Metal Ind Ltd Piercing method with cross helical roll piercer
JPS613606A (en) * 1984-06-15 1986-01-09 Sumitomo Metal Ind Ltd Method for controlling piercing and rolling in cross helical roll piercer
JPH0338001B2 (en) * 1984-06-15 1991-06-07 Sumitomo Metal Ind
JPH0342123B2 (en) * 1984-06-15 1991-06-26
JPH09300006A (en) * 1996-05-15 1997-11-25 Nkk Corp Manufacture of seamless steel tube difficult to be worked
EP1637244A1 (en) * 2003-05-21 2006-03-22 Sumitomo Metal Industries, Ltd. Method of manufacturing seamless tube
EP1637244A4 (en) * 2003-05-21 2007-03-28 Sumitomo Metal Ind Method of manufacturing seamless tube

Also Published As

Publication number Publication date
JPS5944927B2 (en) 1984-11-02

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