EP3313591A1 - Verfahren zum herstellen eines werkstoffverbundes in einer walzanlage und verwendung der walzanlage - Google Patents

Verfahren zum herstellen eines werkstoffverbundes in einer walzanlage und verwendung der walzanlage

Info

Publication number
EP3313591A1
EP3313591A1 EP16730365.0A EP16730365A EP3313591A1 EP 3313591 A1 EP3313591 A1 EP 3313591A1 EP 16730365 A EP16730365 A EP 16730365A EP 3313591 A1 EP3313591 A1 EP 3313591A1
Authority
EP
European Patent Office
Prior art keywords
rolling
composite
workpiece
provisional
temporary
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.)
Withdrawn
Application number
EP16730365.0A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jens-Ulrik Becker
Stefan Myslowicki
Roland Wunderlich
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.)
ThyssenKrupp Steel Europe AG
ThyssenKrupp AG
Original Assignee
ThyssenKrupp Steel Europe AG
ThyssenKrupp 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 ThyssenKrupp Steel Europe AG, ThyssenKrupp AG filed Critical ThyssenKrupp Steel Europe AG
Publication of EP3313591A1 publication Critical patent/EP3313591A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B47/00—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/04—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a rolling mill
    • 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
    • B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B21B1/026—Rolling
    • 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
    • B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B21B1/04—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing in a continuous process
    • 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
    • B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/24—Preliminary treatment
    • 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
    • B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B21B2001/028—Slabs
    • 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
    • B21B1/22—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 plates, strips, bands or sheets of indefinite length
    • B21B2001/225—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 plates, strips, bands or sheets of indefinite length by hot-rolling
    • 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
    • B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
    • B21B2001/386—Plates

Definitions

  • the present invention relates to a method for producing a material composite in a rolling mill and to a rolling mill.
  • Hot rolling leads to bonding defects that reduce the quality of the manufactured composite material.
  • the even heating of the provisional composite is made more difficult by separations between the workpieces arranged one above the other in the temporary composite, ie. H. the slabs and the bands, since the heat transfer in the region of such a separation is limited by the comparatively limited heat transfer by radiation and convection. Therefore, in order to provide the desired homogeneous temperature distribution, it is necessary to increase the waiting time in a reheating furnace, with which the provisional composite is tempered for rolling, which ultimately increases the total time required for the production of the composite material.
  • the object is achieved by a method for producing a composite material in a rolling mill comprising the method steps:
  • the method according to the invention has the advantage that a heat-transferring connection is formed by the first planar connection between the first and second workpieces arranged in the provisional composite.
  • This heat-transferring compound provides improved heating of the provisional assembly by means of heat transfer mechanisms, which are relied upon to transfer the heat along a separation or minimum air gap (radiation and convection).
  • the temporary composite is preferably a slab package, in particular a TriBond® slab package, in which a first workpiece is arranged between two second workpieces.
  • a five-layer system is conceivable in which a third workpiece is arranged in each case between the first and the second workpiece.
  • the first workpiece, the second workpiece and the third workpiece preferably differ, for example, with respect to their material composition, ie their material, or their thickness.
  • welds are provided, which extend circumferentially along the circumference of the provisional composite between the first and the second workpiece.
  • the total thickness of the provisional composite is reduced by about 20%, for example from 285 mm to 230 mm, by the rough rolling, in particular without leaving the dimension spectrum of the slab package. It is provided that the provisional composite in two to three rolling passes, ie in two to three rolling passes, is pre-rolled to achieve the desired surface connection. Furthermore, it is clear to the person skilled in the art that the areal connection between the first and the second workpiece does not have to extend over the entire possible contact area.
  • the rolling is realized by a hot rolling.
  • the provisional bond is heated before and / or after rough rolling, preferably to a temperature of more than 1200 'zeit.
  • the temperature required for forming the laminar connection or the composite material during roughing or hot rolling is advantageously achieved.
  • the provisional bond is cooled in time after the rough rolling, preferably to a maximum of 500 ° C.
  • the probability of the flat connection between the first workpiece and the second workpiece tearing apart after roughing is advantageously reduced.
  • the provisional bond with the planar connection is temporarily stored on a Abschiebebett after pre-rolling.
  • a flow obstacle for example in the form of a further slab, is guided or moved spatially in front of the provisional composite during heating.
  • the welds between the first workpiece and the second workpiece can be advantageously protected, which would otherwise be jeopardized by the combustion gases occurring in a furnace provided for heating the provisional composite.
  • the provisional composite is moved in the lee of the other slab, preferably during rough rolling.
  • the further slab, in the slipstream of which the provisional composite is moved is thicker than the provisional composite, in particular at a point in time before the rough rolling.
  • the first work piece for forming the temporary bond is arranged between a plurality of second workpieces and / or wherein the rough rolling is performed when a portion of the first work piece on the temporary join falls below a limit value.
  • the limit value is determined as a function of a thickness of the individual workpieces, their material composition and a number of layers of the workpieces arranged in multiple layers. It has been found in a surprising and not to be expected for the expert way that for a three-layer slab package as a provisional composite at a proportion of the first workpiece on the entire provisosorische composite the limit preferably between 40% and 80%, preferably 45% to 60%, and more preferably 50%.
  • the limit value is determined by the number of layers of workpieces arranged one above the other in the temporary composite.
  • the limit value for the workpiece 1 in a five-layer slab package is set as a provisional bond below 50%.
  • the rough rolling is carried out in a roughing train, in particular in a roughing stand, the rolling mill and the rolling both in the roughing mill and in a production line of the rolling mill.
  • the rough rolling and the rolling can be decoupled from each other in such a way that no time delay in the manufacture of the composite material in the production line is created by the rough rolling.
  • the provisional composite is reversibly rolled in the roughing stand. Whether the number of rolling passes is selected to be even or odd depends, among other things, on whether the provisional composite is pushed off in front of or behind the roughing stand after rough rolling on the Abschiebebett.
  • the temporary composite is provided by means of a preheating furnace, preferably at 300 ' ⁇ to 500' vor, preheated and for heating, preferably at least 1220 ' ⁇ in a reheating furnace, preferably in a walking beam furnace, a three-hearth furnace or a tunnel furnace is arranged.
  • a blast furnace is reluctant used to avoid that separated by the mechanical forces acting in the blast furnace on the provisional composite, the surface connection.
  • the material is coiled in time after rolling.
  • Another object of the present invention is to use a rolling mill for performing a method according to the invention, wherein in the rolling mill, a preheating furnace for preheating, a reheating furnace for heating, a roughing for roughing and a production line for rolling is provided, wherein the roughing for forming a flat connection between the first workpiece and the second workpiece is used.
  • the method will be incorporated into a production line, i. H. into an existing production flow.
  • the present invention has the advantage that by using the rolling mill according to the invention a flat connection in the provisional composite can be realized.
  • This compound increases the thermal conductivity and thus allows, in the desired time a homogeneous, d. H. to be able to adjust uniform temperature distribution in the temporary composite
  • FIG. 1 shows a temporary composite produced by a method according to the invention, according to an exemplary embodiment of the present invention.
  • FIG. 2 shows in a flow chart a method for producing a composite material according to the exemplary embodiment of the present invention.
  • FIGS. 3a and 3b schematically show sections of a rolling mill according to a first and a second exemplary embodiment of the present invention.
  • the temporary composite 10 is a slab package in which the first workpiece 1 is sandwiched by two second workpieces 2 and thereby forms a multi-layer, in particular a three- or five-layer, system of different workpieces.
  • a weld seam is provided for transporting the provisional composite 10, which connects and holds together the first workpiece 1 and the second workpiece 2 along the circumference of the provisional composite 10.
  • the multi-layer provisional composite 10 is preferably provided to produce from it by means of a roller 104, in particular by means of a hot rolling process, a composite material, in particular in the form of a band.
  • a homogeneous temperature distribution over the entire provisional composite 10 is advantageous for successful hot rolling.
  • the temporary composite 10 For heating the temporary composite 10, it is placed in a reheating furnace 4.
  • the temporary composite 10 in the reheat oven 4 should assume the desired temperature, for example at least 1200 ° C.
  • separations existing between the first workpiece 1 and the second workpiece 2 after assembly of the provisional composite 10 prevent the first workpiece 1 and the second workpiece 2 from permanently abutting each other, thereby forming a heat conductive contact.
  • the first workpiece 1 and the second workpiece 2 arranged in the temporary composite 10 are connected to one another in a flat manner.
  • This allows one realize thermally conductive contact between the first workpiece 1 and the second workpiece 2, which provides for such an improvement in the thermal conductivity that the provisional composite 10 can be heated in the core area, without significantly extending the waiting time.
  • the realization of the planar connection is made dependent on a percentage, in particular volume fraction, of the first workpiece 1 on the entire temporary composite 10 and / or the number of layers of workpieces in the multilayer temporary composite.
  • a planar connection is positive in terms of Task on the waiting time affects when the proportion of the first workpiece 1 is less than 60%, preferably less than 55% and more preferably less than 50% of the entire provisional composite 10.
  • a limit value for the percentage of the first workpiece is set, wherein the limit value determines whether the surface connection between the first workpiece 1 and the second workpiece 2 is to be realized by a rough rolling.
  • the surface connection is realized when the percentage is below the limit.
  • the limit value is adapted to the number of layers. For example, the limit for a five-layer temporary composite 10 is increased over the limit for a three-layer temporary composite 10. By using such a limit value, it can be advantageously avoided that the formation of a planar connection is unnecessarily generated.
  • FIG. 2 shows a flowchart of a method for producing a material composite according to the exemplary embodiment of the present invention.
  • the provisional composite 10 is first preheated to, for example, in a preheating furnace 3, up to 500 ° C.
  • a rough rolling 103 of the temporary composite 10 is provided in a roughing stand 5.
  • the surface bonding improves the heat input such that without significantly lengthening the lay-up time, the core portion of the temporary composite can be placed on the for the rolling 104 provided temperature, for example at least 1200 ° C, is warmed up.
  • rough rolling 103 care is taken to ensure that a dimension spectrum of the provisional composite 10 is not left, while the material composite, for example in FIG Shape of a 3 mm thick sheet, manufactured and finally provided by a reel 105 for further processing.
  • FIGS 3a and 3b are shown schematically sections of a rolling mill for the production of a composite material according to a first and a second exemplary embodiment of the present invention.
  • Figures 3a and 3b are respectively illustrated the preheating furnace 3, the reheating furnace 4 and the roughing stand 5 along which the temporary composite 10 is conveyed in front of the production line along a conveying direction.
  • the provisional composite 10 after cooling of the provisional composite 10 to a maximum
  • the temporary composite 10 is returned to the reheating furnace 4 after a single rolling pass, ie after a single rolling operation, while reversibly rolling in FIG. 3b and the reheating furnace 4 is returned after an even number of rolling passes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
EP16730365.0A 2015-06-26 2016-06-16 Verfahren zum herstellen eines werkstoffverbundes in einer walzanlage und verwendung der walzanlage Withdrawn EP3313591A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015110361.3A DE102015110361B4 (de) 2015-06-26 2015-06-26 Verfahren zum Herstellen eines Werkstoffverbundes in einer Walzanlage und Verwendung der Walzanlage
PCT/EP2016/063947 WO2016207063A1 (de) 2015-06-26 2016-06-16 Verfahren zum herstellen eines werkstoffverbundes in einer walzanlage und verwendung der walzanlage

Publications (1)

Publication Number Publication Date
EP3313591A1 true EP3313591A1 (de) 2018-05-02

Family

ID=56137331

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16730365.0A Withdrawn EP3313591A1 (de) 2015-06-26 2016-06-16 Verfahren zum herstellen eines werkstoffverbundes in einer walzanlage und verwendung der walzanlage

Country Status (6)

Country Link
US (1) US20180185954A1 (zh)
EP (1) EP3313591A1 (zh)
KR (1) KR20180021110A (zh)
CN (1) CN107835721B (zh)
DE (1) DE102015110361B4 (zh)
WO (1) WO2016207063A1 (zh)

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DE102019205673A1 (de) 2019-04-18 2020-10-22 Sms Group Gmbh Verfahren und Vorrichtung zur Herstellung eines mehrschichtigen Verbundmaterials
CN115397665A (zh) 2021-03-05 2022-11-25 江苏康瑞新材料科技股份有限公司 一种手机边框及制造方法
CN115715254A (zh) 2021-03-05 2023-02-24 江苏康瑞新材料科技股份有限公司 一种手机边框及制造方法
KR20230154867A (ko) 2021-03-05 2023-11-09 지앙수 캉루이 뉴 머티리얼 테크놀로지 컴퍼니 리미티드 금속 재료 복합 가공 방법
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CN113732059B (zh) * 2021-09-15 2023-12-05 广东省科学院新材料研究所 镁铝复合板及其制备方法

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Also Published As

Publication number Publication date
CN107835721A (zh) 2018-03-23
CN107835721B (zh) 2020-05-05
KR20180021110A (ko) 2018-02-28
WO2016207063A1 (de) 2016-12-29
US20180185954A1 (en) 2018-07-05
DE102015110361A1 (de) 2016-12-29
DE102015110361B4 (de) 2019-12-24

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