EP0809545A1 - Systeme de calibrage de cylindres pour laminoir a retreindre les tubes - Google Patents

Systeme de calibrage de cylindres pour laminoir a retreindre les tubes

Info

Publication number
EP0809545A1
EP0809545A1 EP96901717A EP96901717A EP0809545A1 EP 0809545 A1 EP0809545 A1 EP 0809545A1 EP 96901717 A EP96901717 A EP 96901717A EP 96901717 A EP96901717 A EP 96901717A EP 0809545 A1 EP0809545 A1 EP 0809545A1
Authority
EP
European Patent Office
Prior art keywords
roller
pipe
caliber
roll
flanks
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
EP96901717A
Other languages
German (de)
English (en)
Other versions
EP0809545B1 (fr
Inventor
Hans-Joachim Pehle
Peter Thieven
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0809545A1 publication Critical patent/EP0809545A1/fr
Application granted granted Critical
Publication of EP0809545B1 publication Critical patent/EP0809545B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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 roll caliber for the roll sets, each consisting of three rolls, of a multi-stand mandrel-less tube-reducing roll mill, in which the concave caliber contours of the rolls on each side of the caliber
  • corner or polygon formation can describe quadrangular and when using a three-roll caliber as a hexagonal cross-sectional shape with rounded edges
  • the proposal of the invention has the advantage that the local bulge increases the local contact pressure in each frame, so that a thickening of material in the middle of the caliber flank is counteracted. In the event of polygon formation, the finished tube is therefore without application of the invention. this point in the wall thickness increased compared to the rest of the tube circumference.
  • the proposed measures of the invention counteract this thickening According to a favorable proposal of the invention it is provided that the increase in the bulge corresponds to 1 to 5% of the tube wall thickness of the tubes to be rolled in the caliber
  • Wall thickening leads If the vertex of the protrusion is shifted towards the caliber jump according to the proposals of the invention, ie the protrusion is arranged asymmetrically in the flank of the calf, this disruptive effect is compensated for
  • FIG. 1 denotes the section from a roll of a roll set consisting of three rolls, the basic caliber 2 of which is shown concave or, in the present case, in the form of a circular arc, deviating from this basic caliber 2 and in In line with the teaching of German Patent 24 48 158, the two flank regions 4 of the basic calf 2 adjacent to the Ka 3 background are convexly curved, the size of the protrusion 5 being indicated by a.
  • the vertex 6 of each protrusion 5 is at an angle ⁇ to the center of Kahber 7 and measured from Kahberground 3 and is 30 to 35 degrees
  • the size of the protrusion a increases from the scaffold site i on the subsequent adjacent scaffold sites i + 1, i + 2, i + 3, i + 4, etc. by a constant or percentage-equal amount Mit i to i + n are the scaffolding places of a number of working scaffolds, of which a maximum of 12 are usefully provided with the increase in the size of the protrusion 5 according to the invention

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Control Of Metal Rolling (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

L'invention concerne un système de calibrage des cylindres pour les ensembles de trois cylindres montés dans un laminoir à rétreindre les tubes, sans mandrin et à plusieurs cages. Afin d'améliorer le calibrage des cylindres de sorte qu'il se produise un épaississement local plus faible dans la paroi du tube, en des points critiques de la périphérie du tube, pendant la réduction, il est proposé que la taille (a) de la courbure préliminaire (b) des flancs de calibre (4) d'au moins une pluralité de jeux de cylindres disposés les uns après les autres dans le sens de laminage augmente selon des valeurs constantes ou proportionnellement égales.
EP96901717A 1995-02-14 1996-02-02 Systeme de calibrage de cylindres pour laminoir a retreindre les tubes Expired - Lifetime EP0809545B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19506858A DE19506858C1 (de) 1995-02-14 1995-02-14 Walzenkalibrierung für ein Rohrreduzierwalzwerk
DE19506858 1995-02-14
PCT/DE1996/000205 WO1996025249A1 (fr) 1995-02-14 1996-02-02 Systeme de calibrage de cylindres pour laminoir a retreindre les tubes

Publications (2)

Publication Number Publication Date
EP0809545A1 true EP0809545A1 (fr) 1997-12-03
EP0809545B1 EP0809545B1 (fr) 1999-04-14

Family

ID=7755188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96901717A Expired - Lifetime EP0809545B1 (fr) 1995-02-14 1996-02-02 Systeme de calibrage de cylindres pour laminoir a retreindre les tubes

Country Status (10)

Country Link
US (1) US5816092A (fr)
EP (1) EP0809545B1 (fr)
CN (1) CN1070394C (fr)
AT (1) ATE178816T1 (fr)
CZ (1) CZ286696B6 (fr)
DE (2) DE19506858C1 (fr)
ES (1) ES2129953T3 (fr)
RU (1) RU2117540C1 (fr)
UA (1) UA45991C2 (fr)
WO (1) WO1996025249A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112007951A (zh) * 2019-05-31 2020-12-01 宝山钢铁股份有限公司 高频直缝焊管的精成型圆管孔型的成型方法

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19758107A1 (de) * 1997-12-17 1999-06-24 Mannesmann Ag Mehrgerüstiges dornloses Streckreduzierwalzwerk
CN100534653C (zh) * 2004-01-21 2009-09-02 住友金属工业株式会社 管的减径轧制装置及减径轧制装置用轧辊
JP4650747B2 (ja) * 2004-03-29 2011-03-16 住友金属工業株式会社 管の製造方法及び定径圧延装置
CN1695839B (zh) * 2004-08-17 2010-07-07 江苏包罗铜材集团股份有限公司 铸锭冷穿、冷扩孔的三辊斜轧方法
RU2270066C1 (ru) * 2004-08-19 2006-02-20 Станислав Александрович Баранов Технологический калибрующий инструмент
RU2288060C2 (ru) * 2004-08-25 2006-11-27 ОАО "Челябинский трубопрокатный завод" Способ подготовки и калибровки валков пилигримовых станов
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
BRPI0810055B1 (pt) * 2007-02-08 2016-10-18 Nippon Steel & Sumitomo Metal Corp rolo raiado para um redutor e redutor
RU2398642C2 (ru) * 2008-08-05 2010-09-10 Александр Михайлович Лютов Технологический калибрующий инструмент
AT507596B1 (de) * 2008-11-20 2011-04-15 Voestalpine Tubulars Gmbh & Co Kg Verfahren und vorrichtung zur herstellung von stahlrohren mit besonderen eigenschaften
JP5849895B2 (ja) * 2012-08-21 2016-02-03 新日鐵住金株式会社 絞り圧延装置及び絞り圧延装置用ロール
CN104550263B (zh) * 2014-12-18 2017-05-10 天津商业大学 一种利用五机架连轧机生产无缝钢管的孔型设计方法
CN113996663B (zh) * 2021-12-31 2022-03-11 太原科技大学 无缝管张力减径工艺减径率分配修正方法及系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE342403C (de) * 1919-09-06 1921-10-18 Verfahren der Herstellung von ungebrannten Baustoffen
DE2333916C2 (de) * 1973-07-04 1986-01-09 Kocks Technik Gmbh & Co, 4010 Hilden Kalibrierung der Walzen einer Reduzierwalzstraße für Rohre
DE2448158C3 (de) * 1974-10-07 1980-09-04 Mannesmannroehren-Werke Ag, 4000 Duesseldorf Auf die Verringerung der Polygonbildung im Rohrinneren ausgerichtete Walzenkalibrierung eines Rohrreduzierwalzwerkes
IT1078828B (it) * 1975-06-25 1985-05-08 Mannesmann Roehren Werke Ag Calibratura di un laminatoio riduttore a tre cilindri per evitare la formazione di poligoni nell interno dei tubi in occasione della laminazione riduttrice dei tubi
DE2753267C3 (de) * 1977-11-30 1980-09-18 Kocks Technik Gmbh & Co, 4000 Duesseldorf Stoßbank zum Herstellen von Rohrluppen
SU1183211A1 (ru) * 1982-06-11 1985-10-07 Uralsky Nii Trubnoj Promy Технологический инструмент редукционного стана
SU1071335A1 (ru) * 1982-11-03 1984-02-07 Уральский научно-исследовательский институт трубной промышленности Технологический инструмент редукционного стана

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9625249A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112007951A (zh) * 2019-05-31 2020-12-01 宝山钢铁股份有限公司 高频直缝焊管的精成型圆管孔型的成型方法

Also Published As

Publication number Publication date
CN1174527A (zh) 1998-02-25
DE19506858C1 (de) 1996-01-18
ES2129953T3 (es) 1999-06-16
CZ244797A3 (en) 1997-11-12
WO1996025249A1 (fr) 1996-08-22
US5816092A (en) 1998-10-06
CN1070394C (zh) 2001-09-05
UA45991C2 (uk) 2002-05-15
RU2117540C1 (ru) 1998-08-20
EP0809545B1 (fr) 1999-04-14
ATE178816T1 (de) 1999-04-15
CZ286696B6 (en) 2000-06-14
DE59601666D1 (de) 1999-05-20

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