EP4117833A1 - Method for producing metal beams with a top-hat profile - Google Patents
Method for producing metal beams with a top-hat profileInfo
- Publication number
- EP4117833A1 EP4117833A1 EP21701289.7A EP21701289A EP4117833A1 EP 4117833 A1 EP4117833 A1 EP 4117833A1 EP 21701289 A EP21701289 A EP 21701289A EP 4117833 A1 EP4117833 A1 EP 4117833A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling
- stands
- rolling process
- section
- carried out
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000002184 metal Substances 0.000 title claims abstract description 10
- 238000005096 rolling process Methods 0.000 claims abstract description 62
- 238000005098 hot rolling Methods 0.000 claims abstract description 19
- 239000011265 semifinished product Substances 0.000 claims abstract description 19
- 230000001788 irregular Effects 0.000 claims abstract description 5
- 239000000047 product Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 7
- 230000009977 dual effect Effects 0.000 claims 1
- 238000007493 shaping process Methods 0.000 abstract description 2
- 239000007858 starting material Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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 invention relates to a method for producing metal supports with a hat profile by hot rolling a metal starting material.
- Such a method is known from CN 102431568 A, for example.
- This process relates to the production of a central sill by hot rolling a three-part arrangement of various semi-finished products.
- the hat profile is composed of two U-shaped profiles and an upper cover sheet to form a U-shape that opens downwards, the individual parts being produced by hot rolling.
- central longitudinal girders from two hot-rolled Z-profiles which are welded together to form a hat profile. This is followed by the usual post-processing steps such as straightening, annealing, etc.
- This method is relatively complex in terms of the work steps required.
- the welding of the Z-profiles results in a structural change in the heat-affected zone of the Z-profile. This results in an inhomogeneity in the structure and the material composition. Different material compositions in the area of the weld seam can lead to corrosion.
- it is necessary to check the finished weld seam for example by means of ultrasound.
- a weld seam also has geometrical disadvantages. For example, the weld seam creates a notch effect.
- the invention is therefore based on the object of providing a simplified method for producing hat profiles which avoids the disadvantages described above.
- a method for producing metal supports with a hat profile by hot rolling a one-piece semi-finished product is proposed.
- the invention proposes a method for the production of metal supports with a hat profile, which comprises the hot rolling of slabs, billets, pre-profiles or similar semi-finished products in a rolling train, the rolling train comprising at least two rolling stands, with an input cross-section of a one-piece semi-finished product using at least two shape calibres during a single rolling process in several rolling stations at hot rolling temperature by a preferably simple irregular calibration an initial cross-section with a hat profile is generated which geometrically corresponds almost to the profile of the finished product.
- “Almost” in the sense of the present invention is to be understood as meaning that the initial cross-section of the hot-rolled profile corresponds to the geometry and dimensions of the finished product, apart from slight angular deviations of the individual legs of the profile.
- An essential aspect of the invention is that the method is carried out without further intermediate steps by hot rolling relatively thick semi-finished products as starting materials up to the almost finished product in a hot rolling train.
- the invention is based on the deformation of a one-piece semi-finished product using at least two form calibres during a single rolling process in several rolling stations at hot rolling temperature.
- the initial cross-section of the hat profile is preferably generated by simply irregular calibration by means of calibers or shaped calibers / caliber rollers.
- Calibration is the profile rolling for producing a profile of a defined finished cross-section from a defined initial cross-section with a certain number of rolling passes, whereby a simple irregular calibration in the sense of the invention is understood to mean a calibration in which the distribution of the change in height over the profile width is at least one Has plane of symmetry.
- a hot rolling temperature is to be understood as a temperature of the rolling stock which is above the recrystallization temperature of the material. In the case of steel as a starting material, this is a temperature well above 900 ° C.
- Forming to hot rolling temperature in the context of the invention is also to be understood as meaning that the rolling stock or semi-finished products have hot rolling temperature or were heated to hot rolling temperature only before the first pass or before the first shaping pass. The further shape passes can be carried out at a correspondingly lower rolling temperature.
- the rolling stock is heated before and / or after the individual rolling steps or rolling passes, for example by using heating devices in the form of induction furnaces or the like.
- the temperature when performing the first form pass or on the first roll stand is preferably between 950 ° C and 1300 ° C.
- Slabs with a rectangular cross-section and dimensions from 500 mm to 1200 mm x 150 mm to 450 mm, so-called blooms with dimensions from 400 mm to 700 mm x 150 mm to 450 mm or so-called beam blanks (pre-profiles) come into consideration as semi-finished products.
- the latter can, for example, have a width of 400 mm to 750 mm and a height of 400 mm to 500 mm.
- the input cross section of the semifinished product has a rectangular cross section, the material distribution of which corresponds approximately to the material distribution to be produced with a first pass of the rolling process.
- the hot rolling process according to the invention can be carried out with a wide variety of stand configurations and rolling methods.
- provision can be made, for example, to transform the input cross-section of the semi-finished product into the output cross-section using seven to thirteen shaped calibers.
- the rolling process is carried out with an open arrangement of at least two, preferably three to eight roll stands arranged next to one another.
- an open rolling train is described, for example, in DE 3902889 C2.
- the rolling process is carried out using four to eight roll stands arranged one behind the other.
- the rolling process can be carried out in a tandem arrangement, at least partially reversing, using roughing stands and finishing stands.
- Under a tandem arrangement are generally to understand several closer together rolling stands, which the rolling stock passes through one or more times.
- the finishing stands are operated in a reversing manner.
- the rolling process can be carried out using four to ten rolling stands arranged one behind the other, comprising roughing stands, finishing stands in a tandem arrangement, which are operated in a reversing manner, and finishing stands, which are operated continuously.
- the rolling process can be carried out using seven to eighteen roll stands using roughing stands and / or rolling stands in a tandem arrangement, which are operated in reversing mode, and finishing stands, which are operated continuously.
- the rolling process can be carried out completely continuously using seven to twenty rolling stands arranged one behind the other, for example in a continuous rolling train.
- a universal roll stand is to be understood as meaning a roll stand with four rolls per stand, two of the rolls being arranged horizontally and two rolls being arranged vertically.
- a geometric measurement of the rolling stock is preferably carried out in front of and / or behind each rolling station or each forming pass. Such a measurement can take place by means of a laser and interact with hydraulic adjustment of the rolls of the individual roll stands.
- a cooling treatment of the hat profile produced or of the rolled stock for setting the structure preferably using a simulation model and / or a structure detector, can be provided.
- the structure can be detected using a laser or ultrasound.
- the inclination of the flanges of the hat profile is between 0.1 and 15 degrees relative to a perpendicular to the axis of symmetry of the hat profile.
- the rolling process is followed by a bending process, preferably with a straightening machine or a bending device.
- the profile is converted into its final shape, in which the legs and webs of the hat profile are arranged essentially at right angles to one another.
- the bending process can be carried out by means of a bending device after the last roll stand of the hot rolling mill or with an additional universal roll stand.
- the rolling process can be operated in “batch or semi-endless mode (hot charging)”.
- the input cross section of the semi-finished product to be hot-rolled is denoted by 10.
- This inlet cross section 10 is rectangular and has a material distribution which corresponds approximately to the material distribution of the first shape stitch.
- a block 11 (bloom), for example, is included as the semi-finished product to be formed rectangular dimensions between 400 mm to 700 mm x 150 to 450 mm provided, which is formed with ten successive shape stitches to the hat profile marked with A.
- the successive shape cuts of the calibration for the production of the hat profile are referred to.
- the successively generated profiles are denoted by H to A.
- ten mold passages are required in the embodiment described, which can be carried out, for example, in ten duo roll stands arranged one behind the other.
- the finished hat profile A is, for example, the hat profile of a central sill.
- the angular deviations after the last form pass 10 are eliminated in the method according to the invention by a bending process, for example by means of a straightening machine or by means of an additional universal roll stand after the last form pass.
- the inclination of the flanges 12 of the hat profile A with respect to a horizontal is approximately between 0.1 and 15 degrees in the illustrated embodiment.
- the slab 13, also shown in the drawing, with rectangular dimensions between 500 mm to 1200 mm x 150 mm to 450 mm or the preliminary profile 14 with dimensions between 400 mm to 750 mm x 400 mm can be used as the starting material for the forming process or as a semi-finished product up to 500 mm into consideration.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020203094.4A DE102020203094A1 (en) | 2020-03-11 | 2020-03-11 | Process for the production of metal supports with a hat profile |
PCT/EP2021/051117 WO2021180387A1 (en) | 2020-03-11 | 2021-01-20 | Method for producing metal beams with a top-hat profile |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4117833A1 true EP4117833A1 (en) | 2023-01-18 |
Family
ID=74205849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21701289.7A Pending EP4117833A1 (en) | 2020-03-11 | 2021-01-20 | Method for producing metal beams with a top-hat profile |
Country Status (6)
Country | Link |
---|---|
US (1) | US20230106710A1 (en) |
EP (1) | EP4117833A1 (en) |
JP (1) | JP7476332B2 (en) |
CN (1) | CN115243805A (en) |
DE (1) | DE102020203094A1 (en) |
WO (1) | WO2021180387A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112474794B (en) * | 2020-11-25 | 2022-07-29 | 马鞍山钢铁股份有限公司 | Cap-shaped steel rolling method and cap-shaped steel |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2844438C2 (en) * | 1978-10-12 | 1986-06-05 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | Rolling train for rolling heavy girder profiles or rails |
DE2855287A1 (en) * | 1978-12-21 | 1980-07-03 | Schloemann Siemag Ag | METHOD FOR ROLLING SHEET WALL PROFILES OF VARIOUS CROSS-SECTIONS IN UNIVERSAL-CARRIER ROLLING MILLS AND ARRANGEMENTS FOR IMPLEMENTING THE METHOD |
DE3730471A1 (en) | 1987-09-11 | 1989-03-23 | Schloemann Siemag Ag | COMPACT ROLLING MILL AND WORKING METHOD FOR ROLLING MOLDED STEEL |
JPH0642961B2 (en) | 1988-07-30 | 1994-06-08 | 住友金属工業株式会社 | Channel material manufacturing method |
DE3902889C2 (en) | 1989-02-01 | 1995-01-26 | Schloemann Siemag Ag | Open rolling mill with roll stands arranged side by side |
JP2577660B2 (en) * | 1990-12-19 | 1997-02-05 | 新日本製鐵株式会社 | Hot rolling method for channel steel |
DE19628369A1 (en) * | 1996-07-13 | 1998-01-15 | Schloemann Siemag Ag | Process for rolling finished profiles from a preliminary profile |
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 (en) | 2000-11-29 | 2003-09-30 | Ortic Ab | Roll forming machine with removable forming stations |
JP3709889B1 (en) | 2004-09-22 | 2005-10-26 | Jfeスチール株式会社 | Manufacturing method of hat-type steel sheet pile |
SE527722C2 (en) | 2005-07-11 | 2006-05-23 | Ortic 3D Ab | Roll forming method for producing metal beam with hat profile, comprises forming hat corners between clamping rolls for side flanges and support roll for central flange |
JP2009160649A (en) * | 2008-01-10 | 2009-07-23 | Jfe Steel Corp | Hat-type steel sheet piling and method of manufacturing it |
CN102431568A (en) | 2010-09-29 | 2012-05-02 | 齐齐哈尔轨道交通装备有限责任公司 | Inverted U-shaped center sill structure |
ITUD20110175A1 (en) * | 2011-11-02 | 2013-05-03 | Danieli Off Mecc | PROCEDURE FOR THE LAMINATION OF A PROFILE, AND COMBINATION OF A LAMINATION CAGE AND A GUIDE AND LAMINATION OF A PROFILE |
TWI574752B (en) * | 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 |
-
2020
- 2020-03-11 DE DE102020203094.4A patent/DE102020203094A1/en active Pending
-
2021
- 2021-01-20 WO PCT/EP2021/051117 patent/WO2021180387A1/en active Application Filing
- 2021-01-20 EP EP21701289.7A patent/EP4117833A1/en active Pending
- 2021-01-20 US US17/910,184 patent/US20230106710A1/en active Pending
- 2021-01-20 JP JP2022552501A patent/JP7476332B2/en active Active
- 2021-01-20 CN CN202180019392.4A patent/CN115243805A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
US20230106710A1 (en) | 2023-04-06 |
JP2023517515A (en) | 2023-04-26 |
JP7476332B2 (en) | 2024-04-30 |
CN115243805A (en) | 2022-10-25 |
WO2021180387A1 (en) | 2021-09-16 |
DE102020203094A1 (en) | 2021-09-16 |
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