EP1388378A1 - Verfahren zur Herstellung eines Hohlblocks aus metallischem Material - Google Patents
Verfahren zur Herstellung eines Hohlblocks aus metallischem Material Download PDFInfo
- 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
- Authority
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000007769 metal material Substances 0.000 title claims abstract description 5
- 238000005096 rolling process Methods 0.000 claims abstract description 51
- 239000007858 starting material Substances 0.000 claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000009749 continuous casting Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 34
- 238000004080 punching Methods 0.000 claims description 30
- 230000008569 process Effects 0.000 claims description 10
- 230000009467 reduction Effects 0.000 description 14
- 230000008901 benefit Effects 0.000 description 6
- 239000011162 core material Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000003292 diminished effect Effects 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000002436 steel type Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
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)
- Superconductors And Manufacturing Methods Therefor (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)
Abstract
Description
- 1
- Hohlblock
- 2
- Ausgangsmaterial
- 3
- Walze des Schrägwalzwerks
- 4
- Walze des Schrägwalzwerks
- 5
- Lochdorn
- 6
- Achse der Walze 3
- 7
- Achse der Walze 4
- R
- Walzrichtung
Claims (10)
- Verfahren zur Herstellung eines Hohlblocks (1) aus metallischem Material, insbesondere aus Wälzlagerstahl, bei dem zylindrisch geformtes Ausgangsmaterial (2) in einem Schrägwalzwerk (3, 4) unter Einsatz eines axial feststehenden Lochdorns (5) zu einem rohrförmigen Hohlblock (1) umgeformt wird,
dadurch gekennzeichnet, dass das Ausgangsmaterial (2) aus nicht vorumgeformtem Material besteht, das durch Direktstrangguss hergestellt wird, und dass das Ausgangsmaterial (2) vor der Zuführung in das Schrägwalzwerk (3, 4) keinem Vorwalzvorgang unterzogen wird. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass das Ausgangsmaterial (2) im Schrägwalzwerk (3, 4) beim Lochen nur einem Walzvorgang mit definiert vermindertem Umformgrad unterzogen wird. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass das Ausgangsmaterial in einem Drei-Walzen-Schrägwalzwerk (3, 4) umgeformt wird. - Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass die Querschnittsabnahme des Ausgangsmaterials (2) während des Lochungsvorgangs im Schrägwalzwerk (3, 4) maximal 71 % bei konvergentem Lochen und maximal 60 % bei divergentem Lochen beträgt. - Verfahren nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass die Einschnürung des Ausgangsmaterials (2) beim Lochungsvorgang mindestens 75 %, vorzugsweise mindestens 87 %, vom Ausgangsdurchmesser beträgt. - Verfahren nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass die maximale Streckung des Ausgangsmaterials (2) bei konvergentem Lochen 3,5, vorzugsweise 3,0, und bei divergentem Lochen 2,5, vorzugsweise 2,0, beträgt. - Verfahren nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass die Durchmesserabnahme des Ausgangsmaterials (2) beim Massiworreduzieren im Drei-Walzen-Schrägwalzwerk (3, 4) maximal 42 % beträgt. - Verfahren nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass das Ausgangsmaterial (2) vor dem Lochen auf eine Temperatur zwischen 1.050 °C und 1.140 °C, vorzugsweise auf eine Temperatur zwischen 1.060 °C und 1.080 °C, erwärmt wird. - Verfahren nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, dass der Lochungsvorgang mit divergent ausgerichteten Walzen (3, 4) erfolgt. - Verfahren nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, dass als metallisches Material ein Wälzlagerstahl des Typs 100 Cr 6 umgeformt wird.
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 (de) | 2004-02-11 |
EP1388378B1 EP1388378B1 (de) | 2006-06-07 |
Family
ID=30128821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03016131A Expired - Lifetime EP1388378B1 (de) | 2002-08-10 | 2003-07-16 | Verfahren zur Herstellung eines Hohlblocks aus metallischem Material |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1388378B1 (de) |
AT (1) | ATE328675T1 (de) |
DE (2) | DE10236757B4 (de) |
ES (1) | ES2266691T3 (de) |
PT (1) | PT1388378E (de) |
SI (1) | SI1388378T1 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006133696A1 (de) * | 2005-06-16 | 2006-12-21 | V & M Deutschland Gmbh | Vorrichtung zum herstellen eines nahtlosen hohlkörpers aus stahl |
EP2127767A1 (de) * | 2006-12-28 | 2009-12-02 | Sumitomo Metal Industries Limited | Verfahren zur herstellung eines aus einem legierungsstahl mit hohem chrom- und nickelgehalt hergestellten nahtlosen stahlrohrs |
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)
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)
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 (de) * | 1998-03-04 | 1999-09-08 | MANNESMANN Aktiengesellschaft | Verfahren zur Herstellung eines nahtlosen Rohres |
Family Cites Families (2)
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 |
-
2002
- 2002-08-10 DE DE10236757A patent/DE10236757B4/de not_active Revoked
-
2003
- 2003-07-16 EP EP03016131A patent/EP1388378B1/de not_active Expired - Lifetime
- 2003-07-16 AT AT03016131T patent/ATE328675T1/de active
- 2003-07-16 DE DE50303653T patent/DE50303653D1/de not_active Expired - Lifetime
- 2003-07-16 PT PT03016131T patent/PT1388378E/pt unknown
- 2003-07-16 ES ES03016131T patent/ES2266691T3/es not_active Expired - Lifetime
- 2003-07-16 SI SI200330417T patent/SI1388378T1/sl unknown
Patent Citations (3)
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 (de) * | 1998-03-04 | 1999-09-08 | MANNESMANN Aktiengesellschaft | Verfahren zur Herstellung eines nahtlosen Rohres |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 007, no. 250 (M - 254) 8 November 1983 (1983-11-08) * |
Cited By (13)
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 (de) * | 2005-06-16 | 2006-12-21 | V & M Deutschland Gmbh | Vorrichtung zum herstellen eines nahtlosen hohlkörpers aus stahl |
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 (de) * | 2006-12-28 | 2009-12-02 | Sumitomo Metal Industries Limited | Verfahren zur herstellung eines aus einem legierungsstahl mit hohem chrom- und nickelgehalt hergestellten nahtlosen stahlrohrs |
EP2127767A4 (de) * | 2006-12-28 | 2012-08-29 | Sumitomo Metal Ind | Verfahren zur herstellung eines aus einem legierungsstahl mit hohem chrom- und nickelgehalt hergestellten nahtlosen stahlrohrs |
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 |
DE10236757A1 (de) | 2004-02-19 |
DE50303653D1 (de) | 2006-07-20 |
EP1388378B1 (de) | 2006-06-07 |
PT1388378E (pt) | 2006-09-29 |
SI1388378T1 (sl) | 2006-10-31 |
DE10236757B4 (de) | 2004-08-12 |
ATE328675T1 (de) | 2006-06-15 |
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