EP3456426A1 - Refroidissement d'un produit laminé plat disposé de manier inclinée - Google Patents

Refroidissement d'un produit laminé plat disposé de manier inclinée Download PDF

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Publication number
EP3456426A1
EP3456426A1 EP17191730.5A EP17191730A EP3456426A1 EP 3456426 A1 EP3456426 A1 EP 3456426A1 EP 17191730 A EP17191730 A EP 17191730A EP 3456426 A1 EP3456426 A1 EP 3456426A1
Authority
EP
European Patent Office
Prior art keywords
flat
cooling section
stock
acute angle
rolling stock
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
EP17191730.5A
Other languages
German (de)
English (en)
Other versions
EP3456426B1 (fr
Inventor
Klaus Weinzierl
Klaus Kinnstaetter
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.)
Primetals Technologies Germany GmbH
Original Assignee
Primetals Technologies Germany GmbH
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 Primetals Technologies Germany GmbH filed Critical Primetals Technologies Germany GmbH
Priority to EP17191730.5A priority Critical patent/EP3456426B1/fr
Priority to US16/644,210 priority patent/US10960447B2/en
Priority to CN201880060919.6A priority patent/CN111093849B/zh
Priority to PCT/EP2018/072745 priority patent/WO2019057435A1/fr
Publication of EP3456426A1 publication Critical patent/EP3456426A1/fr
Application granted granted Critical
Publication of EP3456426B1 publication Critical patent/EP3456426B1/fr
Priority to US17/179,686 priority patent/US11660648B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B21B45/02—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 for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product

Definitions

  • the flat rolled stock is cooled after the hot rolls.
  • an exact temperature control in the cooling section is customary in order to set the desired material properties of the flat rolling stock and to keep it constant with the lowest possible statistical scattering.
  • Examples of such cooling sections are the cooling section of a hot strip mill with or without intensive cooling or the so-called Quette a heavy plate mill.
  • the object of the present invention is to provide possibilities by means of which a defined cooling can be achieved on both sides of the flat rolling stock and yet the risk of damage to the flat rolling stock, in particular at the side edge, can be reliably avoided.
  • the flat rolling stock is rotated about the axis at the exit from the cooling section and / or after leaving the cooling section at the first acute angle, so that the flat rolling stock is horizontally oriented again after completion of the reverse rotation.
  • the further processing and processing of the flat rolling stock carried out after cooling can take place in the usual way.
  • the first acute angle must be so great that the coolant reliably flows off the upper side of the flat rolling stock.
  • the first acute angle is in the range between 5 ° and 30 °, in particular between 10 ° and 25 °, for example at about 15 ° to 20 °. In some cases larger angles - even over 45 ° - are possible. In very rare cases, even a smaller angle may be possible.
  • the flat rolling stock is guided and supported by the rolling stand to the cooling section and in the cooling section by successive transport rollers in the transport direction, wherein the transport rollers are rotatable about first rotation axes are.
  • the lifting and / or lowering of the flat rolling stock is in this case preferably effected gradually by a corresponding orientation of the first axes of rotation of successive transport rollers.
  • the flat rolling stock is fixed in the region in which it is oriented obliquely, as viewed in the width direction of the flat rolled stock by a guide device arranged laterally of the flat rolled stock.
  • a guide device arranged laterally of the flat rolled stock.
  • the guide device may in particular have retaining rollers which, viewed in the transport direction of the flat rolling stock, are arranged one behind the other and are rotatable about second axes of rotation.
  • the second rotation axes form a second acute angle with the width direction of the flat rolled stock, the legs of which both have an upward component.
  • the retaining rollers are therefore inclined inwards relative to the roller table defined by the transport rollers. This measure makes it difficult to fly up the head of the flat rolling stock.
  • the sum of the first acute angle and the second acute angle is less than 90 °, in particular less than 85 °.
  • the sum of the first acute angle and the second acute angle should be greater than 75 °, in particular greater than 80 °.
  • the transport speed is greater than 11.5 m / s, in particular greater than 15 m / s.
  • a device of the type mentioned is configured in that at least in a central region of the cooling section, the first axes of rotation form a first acute angle with the horizontal and the transport rollers are oriented before the inlet of the cooling section and / or in the inlet of the cooling section such that the first axes of rotation of successive transport rollers gradually progressively inclined until the first acute angle is reached, or the associated transport rollers are pivotable about an axis extending in the direction of transport.
  • the transport rollers behind the outlet of the cooling section and / or in the outlet of the cooling section are oriented such that the first axes of rotation of successive transport rollers gradually less inclined until the horizontal is reached, or are the associated transport rollers to an axis extending in the transport direction pivotable.
  • the further processing and processing of the flat rolling stock carried out after cooling can take place in the usual way.
  • the device preferably has on the lower side a guide device by means of which the flat rolling stock is fixed in the direction of width of the flat rolled stock.
  • the guide means has successively arranged retaining rollers which are rotatable about second axes of rotation, the second axes of rotation forming a second acute angle with the width direction of the flat rolled stock, the legs of which both have an upward component. This measure makes it difficult to fly up the head of the flat rolling stock.
  • the sum of the first acute angle and the second acute angle is preferably less than 90 °, in particular less than 85 °. As a result, a fly-up of the head of the flat rolling stock can be particularly reliably avoided.
  • a device for producing a flat rolling stock 1 has a rolling stand 2.
  • the flat rolling stock 1 is made of metal.
  • the metal may in particular be steel. Alternatively, it may be another metal such as aluminum, brass or copper.
  • the flat rolled stock 1 may be a strip or a heavy plate. In the case of a strip, the flat rolled stock 1 has a thickness d (see FIG. 2 ) of less than 26 mm. Often the thickness d is much smaller.
  • the thickness d of the flat rolling stock 1 can only be about 2 mm.
  • the thickness d may be even smaller, for example, only 0.8 mm, 1 mm or 1.5 mm.
  • the flat rolled stock 1 has a thickness d of at least 3 mm.
  • the flat rolling stock 1 extends in a transport direction x over a length l. If the flat rolling stock 1 is a strip, the length l can be several meters. In particular, the length l in this case is usually in the two-digit or three-digit meter range. For very thin bands, the length l can even be over 1 km. In the case of a heavy plate, the length l is a few meters, usually at a maximum of 100 m. In a width direction y, the flat rolling stock 1 extends over a width b. The width b may be - but need not - 1 m and larger.
  • the roll stand 2 From the roll stand 2 are in FIG. 1 only the work rolls 3 shown. However, the roll stand 2 can have further rolls, for example in the case of a quarto stand, backing rolls or, in the case of a sexto scaffold, backing rolls and intermediate rolls.
  • the flat rolling stock 1 is hot rolled in the rolling stand 2.
  • the rollers 3 are rotatable about roller axes 4.
  • the roll axes 4 are horizontal and are arranged one above the other. Accordingly, the flat rolled stock 1 is horizontally oriented during rolling in the rolling stand 2. After rolling in the roll stand 2, the flat rolled stock 1 runs in a horizontal transport direction x and at a transport speed v from the rolling mill 2 from.
  • the transport speed v may be greater than 11.5 m / s, in particular greater than 15 m / s.
  • the device further has a cooling section 5.
  • the cooling section 5 is arranged downstream of the rolling stand 2.
  • the flat rolling stock 1 is thus supplied to the cooling section 5 after it leaves the rolling stand 2.
  • the flat rolling stock 1 is cooled.
  • the flat rolling stock 1 is cooled in the cooling section 5 while being oriented obliquely.
  • "obliquely oriented” means that the flat rolling stock 1, as shown in FIG. 3 is rotated about an axis extending in the transport direction x axis, so that a side edge 6 of the flat rolled stock 1 is oriented higher than the other side edge 7 of the flat rolled material.
  • the device For transporting the flat rolled stock 1 from the rolling stand to the cooling section 5 and for transporting the flat rolled stock 1 through the cooling section 5 (and usually also behind it), the device has transport rollers 8.
  • the transport rollers 8 follow one another in the transport direction x. They have first rotation axes 9 about which the transport rollers 8 are rotatable.
  • the transport rollers 8 are thus arranged between the rolling stand 2 and the cooling section 5, in the cooling section 5 and usually behind the cooling section 5.
  • the flat rolling stock 1 is guided and supported by the rolling stand 2 to the cooling section 5, guided and supported by the cooling section 5 and - at least as a rule - also guided and supported behind the cooling section 5.
  • the guiding of the flat rolling stock 1 takes place in the horizontal transport direction x.
  • the reference numerals for the transport rollers 8 and the first axes of rotation 9 are supplemented in the figures partially in addition with a small letter (a, b, ...) in order to distinguish them from each other if necessary. As far as below generally only the transport rollers 8 and the first rotation axes 9 the Speech is omitted, the supplement by the small letter.
  • the first rotation axes 9 of the transport rollers 8 are as shown in FIG FIG. 2 oriented horizontally.
  • the first rotation axes 9 of the transport rollers 8 are as shown in FIG. 3 oriented at a first acute angle ⁇ .
  • the corresponding first rotation axes 9 thus form with the horizontal H the first acute angle a.
  • the flat rolling stock 1 rests on the transport rollers 8, the flat rolling stock 1 is also oriented at the first acute angle ⁇ within the cooling section 5.
  • the first acute angle ⁇ is preferably in the range between 5 ° and 30 °, in particular between 10 ° and 25 °.
  • the first acute angle ⁇ may be about 15 ° to 20 °.
  • the flat rolling stock 1 For tilting the flat rolling stock 1, the flat rolling stock 1 is rotated about an axis running in the transport direction x by the first acute angle ⁇ . After completion of the rotation about the axis of the flat rolling stock 1 is thus oriented obliquely, as in FIG. 1 and also in FIG. 3 is shown.
  • the flat rolled stock 1 is rotated before the flat rolled stock 1 enters the cooling section 5, ie before the cooling in the cooling section 5 begins.
  • the required space is not available or because after the emergence of the flat rolling stock 1 from the rolling stand 2 as soon as possible to start cooling the flat rolled stock 1 - the turning of the flat rolled stock 1 but also when entering of the flat rolling stock 1 in the cooling section 5.
  • analogous embodiments also apply if the turning of the flat rolling stock 1 takes place by more or less than five transport rollers 8a to 8e.
  • FIGS. 3 to 6 show the corresponding orientation of the transport rollers 8 and the first rotation axes 9 in the operating state, that is, while the flat rolling stock 1 is first rolled in the rolling stand 2 and then cooled in the cooling section 5. It is possible that this orientation is static. Alternatively, it is possible that the transport rollers 8 individually or in groups are pivotable about the axis extending in the transport direction x axis. For example, as shown in FIG. 3 hydraulic actuators 10 may be present, by means of which a corresponding adjustment of the orientation can be effected. It is even possible to pivot the transport rollers 8 from the horizontal H only after the head of the flat rolling stock 1 has already passed the respective transport roller 8. It is also possible to provide a correspondingly staggered pivoting of the transport rollers 8. This will be explained below by way of example, with the following numerical values being purely exemplary.
  • the flat rolling stock 1 After leaving the cooling section 5 - in some cases already when leaving the cooling section 5 - the flat rolling stock 1 is rotated again. In individual cases, it may be useful to continue rotating the flat rolling stock 1 until the flat rolling stock 1 is oriented completely vertically. In general, however, the flat rolling stock 1 is rotated back by the first acute angle ⁇ about the axis extending in the transporting direction x, so that the flat rolling stock 1 is oriented horizontally again once the reverse rotation has been completed. This is from the illustration in FIG. 1 seen.
  • FIG. 7 shows that too FIG. 4 inverse case.
  • the corresponding transport rollers 8 and the associated first rotation axes 9 can also inversely FIG. 5 or inversely too FIG. 6 be oriented. Regardless of which embodiment is realized, however, the lifting and / or lowering of the flat rolling stock 1 is effected gradually by a corresponding orientation of the first rotation axes 9f to 9j of successive transport rollers 8f to 8j.
  • FIG. 7 shows the corresponding orientation of the transport rollers 8 and the first rotation axes 9 in the operating state, that is, while the flat rolling stock 1 is first rolled in the rolling stand 2 and then cooled in the cooling section 5. It's the same as before FIGS. 3 to 6 possible that this orientation is static. Alternatively, it is also possible here for the transport rollers 8 to be pivotable individually or in groups about the axis extending in the transport direction x. The remarks to the FIGS. 4 to 6 are applicable in an analogous manner.
  • the device preferably has guide means at the lower side in at least the region in which the first rotation axes 9 of the transport rollers 8 form the first acute angle ⁇ 11 on.
  • the flat rolling stock 1 is fixed in the width direction y of the flat rolling stock 1.
  • the guide device 11 can be designed, for example, as a rail extending in the transport direction x of the flat rolling stock 1.
  • the guide device 11 as shown in FIG. 3 Retaining roles have, seen in the transport direction x of the flat rolling stock 1 are arranged one behind the other and in turn are rotatable about second axes of rotation 12.
  • the second rotation axes 12 in this case form a second angle ⁇ with the width direction y of the flat rolling stock 1.
  • Both the respective second rotation axis 12 and the width direction y of the flat rolling stock 1 each form a leg 13, 14 of the second angle ⁇ .
  • Both legs 13, 14 have an upward component. It is possible that the horizontal components of the two legs 13, 14 point in opposite directions.
  • the second angle ⁇ as shown in FIG. 3 to be a right angle.
  • the second angle ⁇ is an acute angle.
  • the sum of the first acute angle ⁇ and the second acute angle ⁇ may be greater than 90 ° or as shown in FIG. 8 be equal to 90 °.
  • the leg 13 formed by the second rotation axis 12 has no horizontal component, ie points vertically upwards.
  • the sum is as shown in FIG FIG. 9 less than 90 °, in particular less than 85 °.
  • the horizontal components of the two legs 13, 14 in the same direction.
  • the sum of the two acute angles .alpha., .Beta. Is also preferably greater than 75.degree. In this case, in particular greater than 80.degree.
  • the present invention has many advantages.
  • the coolant flows even at a relatively small value of the first acute angle ⁇ , for example, only 20 ° quickly and reliably by itself from the top of the flat rolled stock 1 from the side.
  • the lateral outflow is facilitated in particular by the vapor film, which forms very quickly on the upper side of the flat rolling stock 1 between the flat rolling stock 1 and the coolant.
  • the gravity of the flat rolled stock 1 leads to an accurate lateral guidance of the flat rolling stock 1.
  • the productivity can be increased because higher transport speeds v than in the prior art are possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP17191730.5A 2017-09-19 2017-09-19 Refroidissement d'un produit laminé plat disposé de manier inclinée Active EP3456426B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP17191730.5A EP3456426B1 (fr) 2017-09-19 2017-09-19 Refroidissement d'un produit laminé plat disposé de manier inclinée
US16/644,210 US10960447B2 (en) 2017-09-19 2018-08-23 Cooling of an obliquely positioned flat rolled product
CN201880060919.6A CN111093849B (zh) 2017-09-19 2018-08-23 对倾斜定位的平坦轧制产品的冷却
PCT/EP2018/072745 WO2019057435A1 (fr) 2017-09-19 2018-08-23 Refroidissement d'un produit à laminer plat placé de manière oblique
US17/179,686 US11660648B2 (en) 2017-09-19 2021-02-19 Cooling of an obliquely positioned flat rolled product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17191730.5A EP3456426B1 (fr) 2017-09-19 2017-09-19 Refroidissement d'un produit laminé plat disposé de manier inclinée

Publications (2)

Publication Number Publication Date
EP3456426A1 true EP3456426A1 (fr) 2019-03-20
EP3456426B1 EP3456426B1 (fr) 2020-07-15

Family

ID=59914333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17191730.5A Active EP3456426B1 (fr) 2017-09-19 2017-09-19 Refroidissement d'un produit laminé plat disposé de manier inclinée

Country Status (4)

Country Link
US (2) US10960447B2 (fr)
EP (1) EP3456426B1 (fr)
CN (1) CN111093849B (fr)
WO (1) WO2019057435A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241735A (en) * 1963-10-10 1966-03-22 Production Machinery Corp Method and apparatus for handling metal strip
US4330112A (en) * 1978-12-29 1982-05-18 Nippon Steel Corporation Apparatus for cooling a steel strip in a continuous annealing line
EP0927603A1 (fr) * 1997-10-04 1999-07-07 Klaus Bodo Meier Procédé et installation pour le mattage de surface de tÔle d'acier inoxydable
DE10129565A1 (de) 2001-06-20 2003-01-09 Siemens Ag Kühlverfahren für ein warmgewalztes Walzgut und hiermit korrespondierendes Kühlstreckenmodell

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3606279A (en) * 1969-10-08 1971-09-20 United States Steel Corp Apparatus for heat treating a sheet
JPS6363519A (ja) * 1986-09-04 1988-03-19 Ishikawajima Harima Heavy Ind Co Ltd ホツトランテ−ブル装置
DE10014813B4 (de) * 2000-03-27 2005-10-06 Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH Verfahren und Vorrichtung zum lagegerechten Aufwickeln eines gewalzten Warmbandes in einer Haspelvorrichtung
CN2487462Y (zh) * 2001-05-13 2002-04-24 刘仕英 轧钢机冷床
KR101005455B1 (ko) * 2005-11-11 2011-01-05 제이에프이 스틸 가부시키가이샤 열연 강대의 냉각 장치 및 냉각 방법
CN202762752U (zh) * 2012-09-07 2013-03-06 中冶赛迪工程技术股份有限公司 一种用于钢板或带钢喷水冷却装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241735A (en) * 1963-10-10 1966-03-22 Production Machinery Corp Method and apparatus for handling metal strip
US4330112A (en) * 1978-12-29 1982-05-18 Nippon Steel Corporation Apparatus for cooling a steel strip in a continuous annealing line
EP0927603A1 (fr) * 1997-10-04 1999-07-07 Klaus Bodo Meier Procédé et installation pour le mattage de surface de tÔle d'acier inoxydable
DE10129565A1 (de) 2001-06-20 2003-01-09 Siemens Ag Kühlverfahren für ein warmgewalztes Walzgut und hiermit korrespondierendes Kühlstreckenmodell
US20040006998A1 (en) 2001-06-20 2004-01-15 Klaus Franz Method for cooling a hot-rolled material and corresponding cooling-line models

Also Published As

Publication number Publication date
US10960447B2 (en) 2021-03-30
US20210178444A1 (en) 2021-06-17
WO2019057435A1 (fr) 2019-03-28
US11660648B2 (en) 2023-05-30
US20200384515A1 (en) 2020-12-10
CN111093849B (zh) 2021-11-26
CN111093849A (zh) 2020-05-01
EP3456426B1 (fr) 2020-07-15

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