US20230106710A1 - Method of producing metal beams with a top-hat profile - Google Patents

Method of producing metal beams with a top-hat profile Download PDF

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Publication number
US20230106710A1
US20230106710A1 US17/910,184 US202117910184A US2023106710A1 US 20230106710 A1 US20230106710 A1 US 20230106710A1 US 202117910184 A US202117910184 A US 202117910184A US 2023106710 A1 US2023106710 A1 US 2023106710A1
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Prior art keywords
roll stands
rolling
hot rolling
carried out
section
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Pending
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US17/910,184
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English (en)
Inventor
Thomas Kosak
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SMS Group GmbH
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SMS Group GmbH
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Publication date
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Assigned to SMS GROUP GMBH reassignment SMS GROUP GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KOSAK, THOMAS
Publication of US20230106710A1 publication Critical patent/US20230106710A1/en
Pending legal-status Critical Current

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    • 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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/095—U-or channel sections
    • 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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/12—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 structural sections, i.e. work of special cross-section, e.g. angle steel in a continuous process, i.e. without reversing stands
    • 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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/14—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 structural sections, i.e. work of special cross-section, e.g. angle steel in a non-continuous process, i.e. at least one reversing stand

Definitions

  • the disclosure relates to a method of producing metal beams having a top-hat profile by hot rolling a metal primary material.
  • a method of producing metal beams having a top-hat profile is generally known, for example from CN 102431568 A. This method relates to the production of a center longitudinal beam by hot rolling a three-part arrangement of different semifinished products.
  • the top-hat profile is assembled from two U-shaped profiles and an upper cover plate to form a downward-opening U-shape, wherein the individual parts are produced by hot rolling.
  • the material may warp during welding.
  • the weld seam causes stability problems at the beginning and end of the seam. By joining several parts, the errors are added up, such that higher error tolerances ultimately result. Finally, material differences of different Z-profiles from different batches are also problematic.
  • WO 2007/008152 A1 describes a method for cold rolling a top-hat profile in a single work operation in a rolling device provided for this purpose.
  • the rolling device for producing the desired profile is known from EP1 339 508 B1.
  • the top-hat profile is rolled or edged, as the case may be, from a flat sheet as primary material. This method is only suitable for processing relatively thin sheets as primary material.
  • the invention is based on the object of providing a simplified method for the production of top-hat profiles that avoids the disadvantages described above.
  • a method for producing metal beams having a top-hat profile by hot rolling a one-piece semifinished product comprises hot rolling of slabs, ingots, billets or similar semifinished products in a rolling train.
  • the rolling train comprises at least two roll stands.
  • substantially means that the exiting cross section of the hot-rolled section corresponds to the geometry and dimensions of the finished product except for minor angular deviations of the individual legs of the profile.
  • the method is carried out without any further intermediate steps by hot rolling relatively thick semifinished products as primary materials up to the substantially finished product in a hot-rolling train.
  • forming a one-piece semifinished product uses at least two shaping passes during a single rolling process in a plurality of rolling stations at hot-rolling temperature.
  • the exiting cross section of the top-hat profile is preferably generated with simple irregular pass design by shaping rolls or shaping passes/precise shaping rolls, as the case may be.
  • Precise shaping is understood to mean profile rolling for producing a profile of a defined finished cross section from a defined initial cross section with a defined number of rolling passes, wherein a simple irregular pass design is understood to mean a precise shaping with which the distribution of the height change over the profile width has at least one plane of symmetry.
  • Hot-rolling temperature refers to a temperature of the rolled material that is above the recrystallization temperature of the material. In the case of steel as the primary material, this is a temperature well above 900° C. Forming at hot-rolling temperature also means that the rolled material or the semifinished products, as the case may be, are only at hot-rolling temperature or have been heated to hot-rolling temperature before the first pass or before the first forming pass. The other forming passes can be carried out at a correspondingly lower rolling temperature.
  • the rolled material can be heated before and/or after the individual rolling steps or passes, as the case may be, for example by using heating devices in the form of induction furnaces or the like.
  • the temperature when carrying out the first forming pass or at the first roll stand is between 950° C. and 1300° C.
  • Examples of semifinished products are slabs with a rectangular cross section and dimensions of 500 mm to 1200 mm ⁇ 150 mm to 450 mm, so-called “blooms” with dimensions of 400 mm to 700 mm ⁇ 150 mm to 450 mm or so-called “beam blanks” (pre-profiles).
  • the latter can, for example, have a width of 400 mm to 750 mm and a height of 400 mm to 500 mm.
  • the entering cross section of the semifinished product has a rectangular cross section whose material distribution corresponds approximately to the material distribution to be produced with a first pass of the rolling process.
  • the hot rolling process can be carried out with a wide variety of stand configurations and rolling methods.
  • provision can be made to form the entering cross section of the semifinished product to the exiting cross section using seven to thirteen shaping passes.
  • the rolling process is carried out with an open arrangement of at least two, preferably from three to eight, roll stands arranged side by side.
  • an open rolling train is described, for example, in DE 39 02 889 C2.
  • the rolling process is carried out using four to eight roll stands arranged one behind the other.
  • a tandem arrangement is generally understood to mean several roll stands moved together, through which the rolled material passes one or more times.
  • the finishing roll stands can be operated in reversing mode.
  • the rolling process can be carried out using four to ten roll stands arranged one behind the other, comprising roughing roll stands, finishing roll stands in tandem arrangement operated in reversing mode, and finishing roll stands operated in continuous mode.
  • the rolling process can be carried out using seven to eighteen roll stands using roughing roll stands and/or roll stands in tandem arrangement, which are operated in reversing mode, and finishing roll stands, which are operated continuously.
  • the rolling process can be carried out completely continuously using seven to twenty roll stands arranged one behind the other, for example in a continuous rolling train.
  • a universal roll stand is understood to mean a roll stand with four rolls per stand, wherein two of the rolls are arranged horizontally and two rolls are arranged vertically.
  • a geometric measurement of the rolled material is carried out prior to and/or after each rolling station or forming pass, as the case may be.
  • a measurement can be performed by laser and can interact with a hydraulic adjustment of the rolls of the individual roll stands.
  • a cooling treatment of the top-hat profile produced or the rolled material, as the case may be, for microstructure adjustment can be provided, preferably using a simulation model and/or a microstructure detector.
  • Microstructure detection can be performed by means of laser or ultrasound.
  • the inclination of the flanges of the top-hat profile is between 0.1 and 15 degrees relative to a perpendicular to the axis of symmetry of the top-hat profile.
  • the rolling process is followed by a bending process, preferably with a straightening machine or a bending device.
  • the bending process transforms the profile into its final shape, in which the legs and crossbars of the top-hat profile are substantially perpendicular to each other.
  • the bending operation can be carried out by means of a bending device after the last roll stand of the hot-rolling train or with an additional universal roll stand.
  • the rolling process can be operated in “batch or semi-endless mode (hot charging).”
  • the invention is explained below with reference to a forming process illustrated in the drawing.
  • the drawing shows alternative semifinished products and profiles after successive forming passes.
  • the entering cross section of the semifinished product to be hot-rolled is designated by reference numeral 10 .
  • This entry cross section 10 is rectangular and has a material distribution that roughly corresponds to the material distribution of the first forming pass.
  • the semifinished product to be formed is, for example, a block 11 (bloom) with rectangular dimensions between 400 mm and 700 mm ⁇ 150 to 450 mm, which is formed into the top-hat profile designated with reference character A using ten successive forming passes.
  • the successive forming passes of the calibration for producing the top-hat profile are designated with reference numerals 1 to 10 .
  • Reference characters H to A thereby designate the successively generated profiles.
  • ten shaping passes are required, which passes can be carried out, for example, in ten duo roll stands arranged one behind the other.
  • the finished top-hat profile A after the forming pass 10 it still exhibits slight angular deviations from a strictly rectangular geometry.
  • the finished top-hat profile A is, for example, the top-hat profile of a center longitudinal beam.
  • the angular deviations after the last forming pass 10 are eliminated by a bending operation, for example by means of a straightening machine or by means of an additional universal roll stand after the last forming pass.
  • the inclination of the flanges 12 of the top-hat profile A relative to a horizontal line is approximately between 0.1 and 15 degrees.
  • the primary material for the forming process or the semifinished product to be formed can be the slab 13 also shown in the drawing with rectangular dimensions between 500 mm and 1200 mm ⁇ 150 mm to 450 mm or the preliminary profile 14 with dimensions between 400 mm and 750 mm ⁇ 400 mm to 500 mm.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
US17/910,184 2020-03-11 2021-01-20 Method of producing metal beams with a top-hat profile Pending US20230106710A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102020203094.4 2020-03-11
DE102020203094.4A DE102020203094A1 (de) 2020-03-11 2020-03-11 Verfahren zur Herstellung von metallenen Trägern mit einem Hutprofil
PCT/EP2021/051117 WO2021180387A1 (de) 2020-03-11 2021-01-20 Verfahren zur herstellung von metallenen trägern mit einem hutprofil

Publications (1)

Publication Number Publication Date
US20230106710A1 true US20230106710A1 (en) 2023-04-06

Family

ID=74205849

Family Applications (1)

Application Number Title Priority Date Filing Date
US17/910,184 Pending US20230106710A1 (en) 2020-03-11 2021-01-20 Method of producing metal beams with a top-hat profile

Country Status (6)

Country Link
US (1) US20230106710A1 (de)
EP (1) EP4117833A1 (de)
JP (1) JP7476332B2 (de)
CN (1) CN115243805A (de)
DE (1) DE102020203094A1 (de)
WO (1) WO2021180387A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112474794B (zh) * 2020-11-25 2022-07-29 马鞍山钢铁股份有限公司 一种帽型钢轧制方法及帽型钢

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4291564A (en) * 1978-12-21 1981-09-29 Schloemann-Siemag Aktiengesellschaft Method of and apparatus for rolling sheet steel profiles of different cross-sectional shape in universal beam rolling mill trains
US4301670A (en) * 1978-10-12 1981-11-24 Schloemann-Siemag Aktiengesellschaft Rolling mill train
US5904061A (en) * 1996-07-13 1999-05-18 Sms Schloemann-Siemag Aktiengesellschaft Method of rolling finished sections from a preliminary section

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3730471A1 (de) 1987-09-11 1989-03-23 Schloemann Siemag Ag Kompaktwalzwerk und arbeitsverfahren zum walzen von formstahl
JPH0642961B2 (ja) 1988-07-30 1994-06-08 住友金属工業株式会社 溝形材の製造方法
DE3902889C2 (de) 1989-02-01 1995-01-26 Schloemann Siemag Ag Offene Walzstraße mit nebeneinander angeordneten Walzgerüsten
JP2577660B2 (ja) * 1990-12-19 1997-02-05 新日本製鐵株式会社 溝形鋼の熱間圧延方法
TW355149B (en) * 1996-12-04 1999-04-01 Schloemann Siemag Ag A method of rolling pre-formed steel into finished steel using a roller frame device in reciprocating motion
US6293133B1 (en) 1999-12-10 2001-09-25 Sms Schloemann-Siemag Aktiengesellschaft Method of rolling finished sections from preliminary sections in reversing roll stand arrangements
SE521076C2 (sv) 2000-11-29 2003-09-30 Ortic Ab Rullformningsmaskin med flyttbara formningsstationer
JP3709889B1 (ja) 2004-09-22 2005-10-26 Ｊｆｅスチール株式会社 ハット型鋼矢板の製造方法
SE0501650L (sv) 2005-07-11 2006-05-23 Ortic 3D Ab Förfarande för att rullforma en hattprofil och rullformningsmaskin
JP2009160649A (ja) 2008-01-10 2009-07-23 Jfe Steel Corp ハット形鋼矢板およびその製造方法
CN102431568A (zh) 2010-09-29 2012-05-02 齐齐哈尔轨道交通装备有限责任公司 几字形中梁结构
ITUD20110175A1 (it) * 2011-11-02 2013-05-03 Danieli Off Mecc Procedimento per la laminazione di un profilato, e combinazione di una gabbia di laminazione e di un dispositivo di guida e laminazione di un profilato
TWI574752B (zh) * 2013-10-22 2017-03-21 Nippon Steel & Sumitomo Metal Corp A method of manufacturing a steel sheet having a cross-sectional shape in the direction of the long side and a roll forming apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4301670A (en) * 1978-10-12 1981-11-24 Schloemann-Siemag Aktiengesellschaft Rolling mill train
US4291564A (en) * 1978-12-21 1981-09-29 Schloemann-Siemag Aktiengesellschaft Method of and apparatus for rolling sheet steel profiles of different cross-sectional shape in universal beam rolling mill trains
US5904061A (en) * 1996-07-13 1999-05-18 Sms Schloemann-Siemag Aktiengesellschaft Method of rolling finished sections from a preliminary section

Also Published As

Publication number Publication date
DE102020203094A1 (de) 2021-09-16
JP7476332B2 (ja) 2024-04-30
EP4117833A1 (de) 2023-01-18
WO2021180387A1 (de) 2021-09-16
JP2023517515A (ja) 2023-04-26
CN115243805A (zh) 2022-10-25

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