EP2358485B1 - Verfahren zur herstellung nahtloser rohre mittels eines drei-walzen-stangenwalzwerks - Google Patents

Verfahren zur herstellung nahtloser rohre mittels eines drei-walzen-stangenwalzwerks Download PDF

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Publication number
EP2358485B1
EP2358485B1 EP09805676A EP09805676A EP2358485B1 EP 2358485 B1 EP2358485 B1 EP 2358485B1 EP 09805676 A EP09805676 A EP 09805676A EP 09805676 A EP09805676 A EP 09805676A EP 2358485 B1 EP2358485 B1 EP 2358485B1
Authority
EP
European Patent Office
Prior art keywords
rolling mill
stand
setting
bar
bar rolling
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.)
Active
Application number
EP09805676A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2358485A2 (de
Inventor
Rolf Kümmerling
Manfred Bellmann
Winfried Braun
Hidenori Kinugasa
Sasaki Kenichi
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.)
Vallourec Deutschland GmbH
Nippon Steel Corp
Original Assignee
V&M Deutschland GmbH
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 V&M Deutschland GmbH, Sumitomo Metal Industries Ltd filed Critical V&M Deutschland GmbH
Priority to PL09805676T priority Critical patent/PL2358485T3/pl
Publication of EP2358485A2 publication Critical patent/EP2358485A2/de
Application granted granted Critical
Publication of EP2358485B1 publication Critical patent/EP2358485B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B21B27/024—Rolls for bars, rods, rounds, tubes, wire or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
    • B21B17/04—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length in a continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills

Definitions

  • the invention relates to a method for producing seamless pipes by means of a three-roll bar rolling mill according to the preamble of claim 1.
  • Bar rolling mills e.g. Working according to the tube contour method are used for the production of seamless tubes. They have the task to strip a previously produced by means of oblique rolling hot hollow block to a mother tube. This mother tube is then reduced in a rectifier- or stretch-reducing mill to the desired final size.
  • bar rolling mills are very sensitive to variations in the wall thickness and the diameter of the incoming hollow block. However, such variations can not always be avoided in the cross rolling process, over which the hollow block is normally made.
  • cross-rolling mills with Diescherrionn as a guide produce hollow blocks with diameters that differ in the head and foot from the "fillet". In the rod rolling process, these deviations can lead to caliber underfill, wall thickening, holes and caliber overfilling.
  • a disadvantage of known Hohlblockreduziergerüsten is that change the rolling conditions in the bar mill at different diameters of the hollow block yet.
  • Object of the present invention is for a three-roll bar mill, the calibration and the driving of Void Reduction Stand (VRS) set so that even with different diameters of the hollow block almost the same rolling conditions apply to the forming in bar mill.
  • VRS Void Reduction Stand
  • a method is used to solve this problem, in which the rolls of the upstream scaffold up and shut down to the same extent as the deformation stands of the bar rolling mill, the Kalibergroundradius the rolls of the upstream scaffold extends over 60 ° and this a flank radius follows with a tangential transition, which is so dimensioned that even with maximum infeed of the rolls in the region of the edge almost no reduction in diameter of the largest expected hollow block diameter takes place.
  • the great advantage of the present invention is that with the proposed procedure and the corresponding calibration on the one hand the fluctuation range of the diameter of the incoming into the bar mill hollow block can be significantly reduced, on the other hand, it is possible by the calibration of the invention, even at different diameters of the hollow block tube almost same conditions for to adjust the bar rolling, which manifests itself in a much more uniform quality in the geometry of the tube.
  • the employment of the upstream scaffold is adjusted according to the employment of the first stand of the rod rolling mill, that the average game to the rod for the employment of the 1st scaffold remains the same in its absolute size.
  • a constant rod clearance at the outlet of the hollow block reducing framework leads to uniform deformation conditions during rolling and thus to a significantly improved tube quality.
  • all stands of the bar rolling mill can be employed for a given rod diameter to achieve the desired wall thickness behind the bar mill by the same amount, this amount also corresponds to the setting of the upstream scaffold.
  • the employment of the upstream scaffold corresponds only to the employment of the first stand of the rod rolling mill in its absolute size.
  • the cooperation of hollow block reduction scaffolding and subsequent 1st scaffolding is crucial for the quality of the rolling process.
  • the employment of the upstream scaffold corresponds to the employment of the first stand of the rod rolling mill in its relative size.
  • the employment in its relative size has the advantage that in addition to the almost constant input conditions for the rod rolling mill and the wear is taken into account (wear compensation) and so the maturities are improved.
  • the caliber base radius has an eccentricity which is dimensioned so that it becomes zero at maximum acceleration of the upstream framework.
  • so-forming contact surface roller rolling has a positive effect on the roller wear on the calibration jump. Furthermore, this has the positive effect of reducing outer surface imperfections, such as caliber strips.
  • a Kaibergroundradius Al is defined, which is constantly enlarging into a Kaliberflankenradius BI passes.
  • a round calibration is proposed, in which a basic radius R1 transitions tangentially into an edge radius over an angular length of 60 °, whose working area per flank is 30 ° ( FIG. 1a ).
  • the advantage of this calibration is that it can halve the variation in the hollow block diameter from the hollow block reduction frame (VRS) compared to the oval calibration.
  • the size BI is used for the distance between the roll axis and the caliber base
  • the size AI is used for the distance between the roll axis and the caliber flank.
  • the hollow blocks produced by the cross rolling mill generally have a tolerance in the outer diameter of z. B. 2.5%.
  • the VRS should be able to record the maximum hollow block diameter x 0.99 to 1.00 (2 x AI).
  • the diameter in the center of the caliber (2 x BI) should correspond to the minimum hollow block diameter x 0.99 to 1.00.
  • the mean caliber diameter is 2 x (BI + (AI - BI) / 2)
  • VRS diameter min. 2 x BI 97.50 mm
  • VRS diameter min. 2 x BI 97.50 mm
  • VRS diameter max. 2 x (48.75 + (51.25 - 48.75) / 4) 98.75 mm
  • the oval calibration achieves a tolerance improvement from 5 to 2.5% (50%) and the round calibration improves from 5 to 1.25% (75%).
  • FIG. 1b shows the VRS framework (left) and the 1st framework of the bar rolling mill (right).
  • c and c ' correspond to the nominal position VRS stand and 1st stand of the three-roll bar mill, where c' is the opening gauge of the caliber of the VRS and c is the opening gauge of the caliber of the bar mill at nominal position.
EP09805676A 2008-12-09 2009-11-20 Verfahren zur herstellung nahtloser rohre mittels eines drei-walzen-stangenwalzwerks Active EP2358485B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09805676T PL2358485T3 (pl) 2008-12-09 2009-11-20 Sposób wytwarzania rur bez szwu za pomocą trójwalcowej walcarki do prętów

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008061141A DE102008061141B4 (de) 2008-12-09 2008-12-09 Verfahren zur Herstellung nahtloser Rohre mittels eines Drei-Walzen-Stangenwalzwerks
PCT/DE2009/001685 WO2010066230A2 (de) 2008-12-09 2009-11-20 Verfahren zur herstellung nahtloser rohre mittels eines drei-walzen-stangenwalzwerks

Publications (2)

Publication Number Publication Date
EP2358485A2 EP2358485A2 (de) 2011-08-24
EP2358485B1 true EP2358485B1 (de) 2012-09-26

Family

ID=42145697

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09805676A Active EP2358485B1 (de) 2008-12-09 2009-11-20 Verfahren zur herstellung nahtloser rohre mittels eines drei-walzen-stangenwalzwerks

Country Status (19)

Country Link
US (1) US9056341B2 (pt)
EP (1) EP2358485B1 (pt)
JP (1) JP5679981B2 (pt)
KR (1) KR101607585B1 (pt)
CN (1) CN102245321B (pt)
AR (1) AR073952A1 (pt)
AU (1) AU2009326655A1 (pt)
BR (1) BRPI0922639B1 (pt)
CA (1) CA2745586A1 (pt)
DE (1) DE102008061141B4 (pt)
EA (1) EA018319B1 (pt)
ES (1) ES2396424T3 (pt)
HR (1) HRP20120985T1 (pt)
MX (1) MX2011006054A (pt)
PL (1) PL2358485T3 (pt)
TN (1) TN2011000273A1 (pt)
UA (1) UA100933C2 (pt)
WO (1) WO2010066230A2 (pt)
ZA (1) ZA201104275B (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012006941B4 (de) 2012-03-30 2013-10-17 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung eines Bauteils aus Stahl durch Warmumformen
CN104874616B (zh) * 2014-02-28 2018-02-16 中南大学 一种热轧无缝钢管壁厚精度的控制方法及轧辊孔型

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3128055C2 (de) * 1980-07-18 1993-08-19 Sumitomo Kinzoku Kogyo K.K., Osaka Schrägwalzgerüst ohne Dorn für nahtlose Metallrohre
JPS57137009A (en) * 1981-02-17 1982-08-24 Sumitomo Metal Ind Ltd Manufacture of seamless metallic pipe
JPS63144807A (ja) * 1986-12-09 1988-06-17 Kawasaki Steel Corp 円管の絞り圧延方法
IT1238224B (it) * 1989-11-30 1993-07-12 Dalmine S R L C Processo perfezionato di laminazione a caldo di tubi senza saldatura con preventiva riduzione degli sbozzati forati
JP2924523B2 (ja) * 1992-12-11 1999-07-26 住友金属工業株式会社 マンドレルミルによる金属管の延伸圧延方法
JPH09314205A (ja) * 1996-05-31 1997-12-09 Kawasaki Steel Corp 円形鋼管の絞り圧延方法
BRPI0408939B1 (pt) * 2003-03-26 2017-07-18 Nippon Steel & Sumitomo Metal Corporation Method for producing seamless steel pipe
WO2005070574A1 (ja) * 2004-01-21 2005-08-04 Sumitomo Metal Industries, Ltd. 管の絞り圧延装置及び絞り圧延装置用ロール
CN100401257C (zh) * 2005-02-25 2008-07-09 浙江大学 无缝钢管张力减径过程仿真方法
JP4441912B2 (ja) 2005-03-28 2010-03-31 住友金属工業株式会社 マンドレルミル圧延方法
CN101024229A (zh) * 2006-02-20 2007-08-29 李铁铎 一种不锈钢无缝复合管连铸连轧生产方法及设备

Also Published As

Publication number Publication date
CN102245321B (zh) 2014-09-10
AR073952A1 (es) 2010-12-15
WO2010066230A2 (de) 2010-06-17
TN2011000273A1 (en) 2012-12-17
MX2011006054A (es) 2011-09-06
EA201100924A1 (ru) 2011-12-30
ZA201104275B (en) 2012-02-29
PL2358485T3 (pl) 2013-05-31
DE102008061141B4 (de) 2012-08-30
US9056341B2 (en) 2015-06-16
DE102008061141A1 (de) 2010-06-10
ES2396424T3 (es) 2013-02-21
EP2358485A2 (de) 2011-08-24
BRPI0922639A8 (pt) 2018-01-02
AU2009326655A1 (en) 2010-06-17
WO2010066230A3 (de) 2010-09-16
JP2012510902A (ja) 2012-05-17
KR20110102443A (ko) 2011-09-16
UA100933C2 (ru) 2013-02-11
CA2745586A1 (en) 2010-06-17
JP5679981B2 (ja) 2015-03-04
EA018319B1 (ru) 2013-07-30
BRPI0922639A2 (pt) 2017-10-24
US20120125068A1 (en) 2012-05-24
CN102245321A (zh) 2011-11-16
BRPI0922639B1 (pt) 2020-09-29
HRP20120985T1 (hr) 2013-03-31
KR101607585B1 (ko) 2016-03-30

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