EP1388378A1 - Procédé de fabrication d'un bloc creux en matériau métallique - Google Patents

Procédé de fabrication d'un bloc creux en matériau métallique Download PDF

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Publication number
EP1388378A1
EP1388378A1 EP03016131A EP03016131A EP1388378A1 EP 1388378 A1 EP1388378 A1 EP 1388378A1 EP 03016131 A EP03016131 A EP 03016131A EP 03016131 A EP03016131 A EP 03016131A EP 1388378 A1 EP1388378 A1 EP 1388378A1
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EP
European Patent Office
Prior art keywords
starting material
punching
cross
rolling mill
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.)
Granted
Application number
EP03016131A
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German (de)
English (en)
Other versions
EP1388378B1 (fr
Inventor
Jürgen Pietsch
Thomas Leisten
Frank Salomon
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.)
SMS Group GmbH
Original Assignee
SMS Meer GmbH
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Filing date
Publication date
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Application filed by SMS Meer GmbH filed Critical SMS Meer GmbH
Priority to SI200330417T priority Critical patent/SI1388378T1/sl
Publication of EP1388378A1 publication Critical patent/EP1388378A1/fr
Application granted granted Critical
Publication of EP1388378B1 publication Critical patent/EP1388378B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/466—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B3/02—Rolling special iron alloys, e.g. stainless steel

Definitions

  • the invention relates to a method for producing a hollow block of metallic Material, in particular bearing steel, in which cylindrically shaped Starting material in a cross rolling mill using an axially fixed Lochdorns is formed into a tubular hollow block.
  • a procedure This type is known for example from EP 0 940 193 A2.
  • cylindrically shaped starting material is a Slanting mill supplied, which is equipped with an axially fixed hole dome is.
  • the starting material is rolled over the perforated dome.
  • the advantages of the Schrägwalzvons are mainly the low eccentricity of Hollow blocks and a high operating weight of the blocks, d. H. it can be relatively long Tubes are manufactured.
  • a disadvantage of the known Schrägwalz compiler that tensile stresses occur in the material core zone, whereby the risk of Internal fault formation by tearing exists; Furthermore, here is a relatively high Preliminary material quality necessary, which is why usually in materials with reduced Formability only pre-rolled material can be processed.
  • the advantages of the press hole are above all the occurrence of compressive stresses in the material core zone, whereby there is no danger of internal defects, even with steel types with limited forming capacity.
  • the disadvantage is here the relatively high eccentricity of the hollow blocks and their lower operating weight.
  • the invention is therefore an object of the invention to provide a method with Hollow blocks made of bearing steel by the Schrägwalz compiler economically let produce.
  • the starting material for the production of Tubes as a starting product for the production of bearing rings are cheaper.
  • the starting material Made from non-pre-formed material produced by direct extrusion is, and that the starting material before feeding into the cross rolling mill is not subjected to a Vorwalzvorgang.
  • the starting material is preferred in the cross rolling then only one rolling process defined during punching diminished, d. H. subjected to low degree of deformation; the forming parameters are then so limited, so that only a small deformation takes place.
  • directly extruded starting material is used used for making seamless pipes without performing a Pre-rolling process is fed to the cross rolling mill.
  • the material is only one rolling process defined diminished, d. H. low degree of deformation compared with the possibilities of known Schrägwalz compiler. It takes place during the oblique rolling Therefore, no massive reduction before or during punching instead, as in previously known Procedure is common. In this way, the manufacturing process for seamless tubes, especially from bearing steel, much easier and thus made more economical.
  • the cross rolling mill is preferably designed as a three-roll cross rolling mill; cone tapered rollers are preferably used here.
  • constriction in the punching process should be at least 75%, preferably at least 87% of the initial diameter.
  • constriction is here the diameter reduction at the narrowest point, the high point, too understand; it thus results as a quotient of the diameter at the high point based on the initial diameter.
  • the high point is the narrowest point between the rollers, d. H. where the material diameter is the smallest.
  • the maximum elongation of the starting material is convergent Punch 3.5, preferably 3.0, and in divergent punching 2.5, preferably 2.0.
  • the extension results as a ratio of the tube length after the Transformation to the original block or pipe length or ratio of Cross-sectional area before forming to the reshaped cross-sectional area.
  • the diameter decrease of the starting material in the cross rolling mill should if a Massiworredump is made, so in the case of a Vorumformung - Maximum 42%, preferably a maximum of 15%. It is defined as Difference between the diameter before forming and the diameter after forming relative to the starting diameter, i. before forming.
  • the process can be used particularly advantageously if the starting material before punching to a temperature between 1050 ° C and 1140 ° C, preferably at a temperature between 1060 ° C and 1080 ° C, is heated.
  • the punching operation is performed with divergent aligned rollers.
  • divergent rolling the roll axes move away in the rolling direction while in convergent rolling, the roll axes in Increasingly approach rolling direction.
  • the proposed method is particularly preferred in processing of bearing steel type 100 Cr 6 is used.
  • bearing steel in direct casting was manufactured to process without prereduction and the hollow block reshape.
  • the core area of the material are advantageous compressive stresses in front.
  • the hollow block substantially cheaper Be prepared as compared with the Schrägwalz Kunststoffmaschinen according to the state of the art.
  • the method according to the invention therefore combines the advantages of the cross rolling method in terms of good concentricity, high application weight and lower Material losses with the advantages of the press hole in terms of predominant Compressive stresses in the core area of the material while avoiding the disadvantages both procedural principles.
  • quality improvements of the hollow block in addition to economic benefits also quality improvements of the hollow block.
  • hollow block 1 In the figure is denoted by 1 to be produced hollow block, which then to a seamless tube is reshaped.
  • This consists in the embodiment Rolling bearing steel of the type 100 Cr 6.
  • the hollow block 1 is made of starting material 2 manufactured with circular cylindrical cross section. The transformation of the starting material 2 to the hollow block 1 takes place in a three-roll cross-rolling mill; shown are two rolls 3 and 4 of the cross rolling mill.
  • the rollers 3, 4 have a conical section on.
  • the axes 6 and 7 of the rollers 3 and 4 are removed in Rolling direction R from each other, d. H. There is a divergent punching.
  • an axially fixed Piercing pin 5 is provided, via which the starting material 2 through the rollers. 3 and 4 is rolled.
  • the Starting material 2 consists of non-preformed material by direct casting will be produced. Before the feed of the starting material 2 in the Slanting mill 3, 4, the material is not subjected to a pre-rolling. in the Beveling mill 3, 4 itself, when punching the starting material 2, with a only defined diminished, d. H. rolled low degree of deformation.
  • constriction of the starting material 2 during the punching process at least 75%, more preferably at least 87%.
  • the punching process is employed according to the embodiment with divergent Rolling performed.
  • the maximum stretch of the starting material 2.5.
  • the method is preferably applicable to the processing of low alloy steels of non-pre-formed continuous casting material and high alloy steels while avoiding significant internal defects and end losses at low eccentricity.
  • the feedstock may be specially melted, pan-treated and potted, such that it has a fine-grained, homogeneous microstructure with finely dispersed primary carbide and high purity distribution, with particularly limited O 2 and S contents.
  • An example of this is a mother block with a diameter of 120 mm, rolled from the hollow blocks with a diameter of 127 to 144 mm become.
  • the mother block before, d. H. before carrying out the invention Method by skew rolling on z. B. 100 mm or 80 mm vorreduish, From the blocks thus formed hollow blocks with a diameter from 106 to 120 mm and 85 to 96 mm, respectively.
  • the degree of deformation or the stretch can be used in a cone slanting mill with 2 Rolls up to 6.0.
  • the Value up to 4.0 In a barrel rolling mill with 2 rollers, the Value up to 4.0.
  • the three-roll cross rolling mill In the three-roll cross rolling mill is in the use of Barrel rollers, depending on the diameter change, a maximum value of 2.8 to 3.5 possible, a value of 2.3 is usual. It proposes a maximum value of 2.5 up to 3.5, depending on the roller position.
  • the stretching area for cross-rolling mills lies between 1.2 and 6.0.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
EP03016131A 2002-08-10 2003-07-16 Procédé de fabrication d'un bloc creux en matériau métallique Expired - Lifetime EP1388378B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200330417T SI1388378T1 (sl) 2002-08-10 2003-07-16 Postopek izdelave votlega bloka iz kovinskega materiala

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10236757 2002-08-10
DE10236757A DE10236757B4 (de) 2002-08-10 2002-08-10 Verfahren zur Herstellung eines Hohlblocks aus metallischem Material

Publications (2)

Publication Number Publication Date
EP1388378A1 true EP1388378A1 (fr) 2004-02-11
EP1388378B1 EP1388378B1 (fr) 2006-06-07

Family

ID=30128821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03016131A Expired - Lifetime EP1388378B1 (fr) 2002-08-10 2003-07-16 Procédé de fabrication d'un bloc creux en matériau métallique

Country Status (6)

Country Link
EP (1) EP1388378B1 (fr)
AT (1) ATE328675T1 (fr)
DE (2) DE10236757B4 (fr)
ES (1) ES2266691T3 (fr)
PT (1) PT1388378E (fr)
SI (1) SI1388378T1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006133696A1 (fr) * 2005-06-16 2006-12-21 V & M Deutschland Gmbh Dispositif destine a la fabrication d'un corps creux sans soudure en acier
EP2127767A1 (fr) * 2006-12-28 2009-12-02 Sumitomo Metal Industries Limited Procédé de production de tube en acier sans soudure fait en acier allié à teneur élevée en chrome et à teneur élevée en nickel
CN102699104A (zh) * 2012-06-11 2012-10-03 常熟市旋力轴承钢管有限公司 G20CrNiMo轴承钢管的制备方法
CN105170653A (zh) * 2015-09-15 2015-12-23 鑫鹏源智能装备集团有限公司 具有二次穿孔功能辊型的多功能轧机
DE102010047868B4 (de) * 2009-10-26 2017-01-05 Sms Group Gmbh Verfahren und Vorrichtung zum Herstellen eines Hohlblocks aus einem Block
CN111589869A (zh) * 2020-01-09 2020-08-28 西北工业大学 一种2219铝合金管的高强韧二辊斜轧穿孔方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008028711B4 (de) * 2007-10-15 2009-07-09 V&M Deutschland Gmbh Verfahren und Vorrichtung zur Messung der Exzentrizität eines warmgefertigten, nahtlosen Rohres bei der Herstellung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58135708A (ja) * 1982-02-05 1983-08-12 Kawasaki Steel Corp 継目無鋼管用ホロ−ブル−ムの連続製造方法および製造設備
DE19520833A1 (de) * 1994-06-16 1995-12-21 Mannesmann Ag Verfahren zur Herstellung eines nahtlosen warmgefertigten Rohres
EP0940193A2 (fr) * 1998-03-04 1999-09-08 MANNESMANN Aktiengesellschaft Procédé de fabrication d'un tube sans soudure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326946C1 (de) * 1983-07-22 1985-03-21 Mannesmann AG, 4000 Düsseldorf Vorrichtung zum Herstellen eines Hohlkörpers durch Schrägwalzen
DE3530343A1 (de) * 1985-08-24 1987-02-26 Kocks Technik Verfahren zum hohlwalzen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58135708A (ja) * 1982-02-05 1983-08-12 Kawasaki Steel Corp 継目無鋼管用ホロ−ブル−ムの連続製造方法および製造設備
DE19520833A1 (de) * 1994-06-16 1995-12-21 Mannesmann Ag Verfahren zur Herstellung eines nahtlosen warmgefertigten Rohres
EP0940193A2 (fr) * 1998-03-04 1999-09-08 MANNESMANN Aktiengesellschaft Procédé de fabrication d'un tube sans soudure

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 250 (M - 254) 8 November 1983 (1983-11-08) *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8316680B2 (en) 2005-06-16 2012-11-27 V&M Deutschland Gmbh Method of making a seamless hollow body from steel
EA013888B1 (ru) * 2005-06-16 2010-08-30 Ф Унд М Дойчланд Гмбх Способ изготовления бесшовного полого изделия из стального круглого слитка (варианты)
AU2006257519B2 (en) * 2005-06-16 2011-01-27 V & M Deutschland Gmbh Device for production of a seamless hollow body from steel
WO2006133696A1 (fr) * 2005-06-16 2006-12-21 V & M Deutschland Gmbh Dispositif destine a la fabrication d'un corps creux sans soudure en acier
CN101198419B (zh) * 2005-06-16 2019-08-13 V&M德国有限公司 用于制造钢制无缝的空心管坯的方法
EP2127767A1 (fr) * 2006-12-28 2009-12-02 Sumitomo Metal Industries Limited Procédé de production de tube en acier sans soudure fait en acier allié à teneur élevée en chrome et à teneur élevée en nickel
EP2127767A4 (fr) * 2006-12-28 2012-08-29 Sumitomo Metal Ind Procédé de production de tube en acier sans soudure fait en acier allié à teneur élevée en chrome et à teneur élevée en nickel
DE102010047868B4 (de) * 2009-10-26 2017-01-05 Sms Group Gmbh Verfahren und Vorrichtung zum Herstellen eines Hohlblocks aus einem Block
CN102699104A (zh) * 2012-06-11 2012-10-03 常熟市旋力轴承钢管有限公司 G20CrNiMo轴承钢管的制备方法
CN105170653A (zh) * 2015-09-15 2015-12-23 鑫鹏源智能装备集团有限公司 具有二次穿孔功能辊型的多功能轧机
CN105170653B (zh) * 2015-09-15 2018-02-06 鑫鹏源智能装备集团有限公司 具有二次穿孔功能辊型的多功能轧机
CN111589869A (zh) * 2020-01-09 2020-08-28 西北工业大学 一种2219铝合金管的高强韧二辊斜轧穿孔方法
CN111589869B (zh) * 2020-01-09 2023-08-18 安徽汉正轴承科技有限公司 一种2219铝合金管的高强韧二辊斜轧穿孔方法

Also Published As

Publication number Publication date
ES2266691T3 (es) 2007-03-01
SI1388378T1 (sl) 2006-10-31
ATE328675T1 (de) 2006-06-15
DE10236757B4 (de) 2004-08-12
DE50303653D1 (de) 2006-07-20
DE10236757A1 (de) 2004-02-19
EP1388378B1 (fr) 2006-06-07
PT1388378E (pt) 2006-09-29

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