EP3140056B1 - Bandabweiser und walzenanordnung - Google Patents

Bandabweiser und walzenanordnung Download PDF

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Publication number
EP3140056B1
EP3140056B1 EP15707991.4A EP15707991A EP3140056B1 EP 3140056 B1 EP3140056 B1 EP 3140056B1 EP 15707991 A EP15707991 A EP 15707991A EP 3140056 B1 EP3140056 B1 EP 3140056B1
Authority
EP
European Patent Office
Prior art keywords
tip
nozzle
compressed air
base body
channel section
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.)
Active
Application number
EP15707991.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3140056A1 (de
Inventor
Wolfgang Denker
Kerstin SPILL
Johannes Alken
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.)
SMS Group GmbH
Original Assignee
SMS Group 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 SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP3140056A1 publication Critical patent/EP3140056A1/de
Application granted granted Critical
Publication of EP3140056B1 publication Critical patent/EP3140056B1/de
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
    • 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
    • B21B39/14—Guiding, positioning or aligning work
    • B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • 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
    • B21B39/14—Guiding, positioning or aligning work
    • 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
    • B21B45/0269—Cleaning
    • B21B45/0275—Cleaning devices
    • B21B45/0278—Cleaning devices removing liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/18—Rolls or rollers

Definitions

  • the present invention relates to a belt deflector.
  • Belt deflectors are shielding devices in rolling stands for rolling typically metal strip. During rolling, the rolls are often loaded with a rolling medium, such as a coolant and / or lubricant; the Bandabweiser then serve in addition to the contactless removal of the coolant or lubricant from the surface of the metal strip.
  • the invention relates to a roller assembly having at least one roller and at least one belt deflector according to the invention.
  • the belt deflector according to the invention represents a further development of the belt deflector, as described in European Patent EP 0 662 359 is disclosed.
  • the from the European patent EP 0 662 359 B1 Known tape deflector consists essentially of a main body with a tip. In the main body at least one compressed air chamber and a nozzle for the discharge of compressed air from the compressed air chamber is formed.
  • the compressed air chamber is flow-connected to a source of compressed air, which provides compressed air for the compressed air chamber and the nozzle.
  • the nozzle consists of a with the compressed air chamber flow-connected first nozzle channel portion and a second nozzle channel portion, which is connected downstream of the first nozzle channel portion in the flow direction.
  • the first nozzle channel portion consists of two substantially parallel side walls, wherein the one side wall is referred to as the tip of the base body, while the other side wall is referred to as facing away from the top of the base body.
  • Side wall bent to form a first tear-off edge to the top of the body out.
  • the second nozzle channel section is essentially formed by an extension or an extension section of the side wall facing away from the tip of the base body in the flow direction beyond the first tear-off edge.
  • the from the EP 0 662 359 B1 known belt deflector has a nozzle which is slotted throughout the width of the rolled or rolled strip.
  • a gap between the belt deflector and a roller, against which the belt deflector is made is sealed against existing coolants and / or lubricants using the mode of action of the Prandtl-Meyer corner flow.
  • Prandtl-Meyer corner flow is a phenomenon in the field of gas dynamics, namely the fluid deflection in the supersonic range.
  • This effect of flow diversion and flow broadening results in an effective seal of a gap between the roll barrel of a work roll and a belt deflector attached to the roll barrel.
  • the effect effectively prevents the penetration of coolant or lubricant from an area above the belt deflector into an area between the belt deflector and the surface of the rolled or rolled strip.
  • This sub-optimal sealing effect is essentially due to the fact that vortex form between the deflected air flow and the roll surface, which lead the repellent medium in the immediate vicinity of the roll bale partly in the direction of the belt deflector, instead of conveying it away from him.
  • the invention has the object of developing a known belt deflector for rejecting rolling medium of metal strip in a rolling mill and a known roller assembly with such a belt deflector to the effect that the sealing effect of the belt deflector against a roll in a rolling mill is improved.
  • strip in the sense of the present invention means a metal strip to be rolled or rolled.
  • tear-off edge in the sense of the present invention means an edge whose cross-sectional contour - in mathematical ideal theory terms - is continuous but not differentiable.
  • the first and the second tear-off edge due to their in each case sharp-edged cross-sectional contour, that the air flow in the nozzle after passing the tear-off can not follow the contour of the nozzle, that is not strongly deflected, but in the original direction, as before the first Düsenkanalabrough specified, continues to flow.
  • roller medium means cooling medium and / or lubricating medium, which is applied for rolling the strip on the rollers or the belt.
  • the claimed design of the second tear-off edge offers the advantage that the air flow at the end of the second nozzle channel section actually flows substantially further in its current flow direction towards the roll barrel or at least tangentially along the roll barrel and not - as described in the prior art - due the Coanda effect of the curvature follows at the end of the side wall of the second nozzle channel portion and is directed away from the roll barrel.
  • the air flow realized by the claimed second tear-off edge closely along the roll bale advantageously prevents swirling of the air flow in the vicinity above the strip deflector, whereby the sealing effect of the strip deflector compared to an associated roll is markedly improved, because no rolling medium is more by vortex formation in the direction of the belt deflector or is guided in the direction of the nozzle.
  • the claimed construction of the second nozzle channel portion with the second tear-off edge is geometrically extremely simple and thus inexpensive to manufacture. There are no elaborate curves and convex surfaces are made. Only the defined second tear-off edge must be precisely defined and formed.
  • the side wall facing away from the tip of the main body forms a uniform plane both in the region of the first nozzle channel section and in the region of the second nozzle channel section.
  • the curvature of the Strömungsleitkontur can be advantageously formed smaller, the smaller, ie the sharper the angle a between the flow direction R in the first nozzle channel portion and a connecting line between the tip of the body and the first tear-off edge.
  • a compressed air source either a compressor for generating compressed air with, for example, ⁇ 3 bar or a fan for generating compressed air with, for example, ⁇ 1.5 bar can be used. It is important that the air flow in the nozzle in any case in the present invention may only reach subsonic speed; Thus, the physical action principle of the Prandtl-Meyer effect, which applies only to supersonic flows, no longer applies in the present invention.
  • the use of a fan for compressed air generation has the advantage that the compressed air provided in this way is significantly cheaper than the typically existing factory compressed air. Due to the limitation of the air flow to the subsonic speed range is advantageously achieved that the noise level and the consumption of compressed air per unit time, compared to the use of compressed air in the supersonic speed range, are significantly reduced.
  • the band deflector in the width direction may comprise a plurality of pressure chambers, which are each connected via a separate supply line to the compressed air source.
  • each of the supply lines via a private shut-off valve can be shut off individually.
  • the provision of the plurality of pressure chambers in conjunction with the individual shut-off valves has the advantage that the width of the belt deflector used in practice on the respectively used roll width and the width of the belt is adjustable, in particular the edge regions of the belt deflector by means of the shut-off valves optionally be shut off by a compressed air supply. In this way, advantageously, the operating costs, especially for the expensive compressed air consumption, can be reduced.
  • the described embodiment offers the advantage of an increased variance of the permissible frame geometries:
  • the band thickness spectrum and the roll grinding area can be made variable without impairing the functionality.
  • the nozzle of the scraper according to the invention extends over the entire width the band deflector and may be formed either as a slot or a plurality of individual holes.
  • the region of the tip of the main body is particularly wear-intensive, since it repeatedly comes in Bandeinfädeln or -ausfädeln and tape tears to high loads in this area. If the tip of the main body of the band deflector is formed as a separate component detachably connected to the main body, this offers the advantage that the tip can be easily replaced as a wearing part. This is typically much cheaper than replacing the entire belt deflector.
  • the tip of the base body may be made of metal or plastic, for example.
  • a roller assembly having at least one roller and at least one - except for a gap - against the bale of the roller employed Bandabweiser according to one of the preceding claims.
  • the band deflector is employed at least in the region of the tip of the main body via a gap with a gap width d between 1 to 9 mm, preferably 5 mm, spaced from the roller.
  • the band deflector is employed at least in the region of the tip of the main body via a gap with a gap width d between 1 to 9 mm, preferably 5 mm, spaced from the roller.
  • the mentioned gap width of up to about 9 mm advantageously allows much more media-laden air to be removed from the air region between the strip surface and the strip deflector than was the case with the nozzle of the prior art operated with supersonic compressed air.
  • the ratio of supplied compressed air to total discharged air volume was at a factor of 1: 3.
  • the ratio is increased to more than 1: 4, z. B. 1: 5 enlarged.
  • the belt deflector according to the invention does not have to be approached position-controlled; usually a predefined stop is enough. However, this is dependent on the entire geometry, in particular the roll grinding due to roll wear.
  • the belt deflector according to the invention does not necessarily have to be fastened to a movable adjustment device in order to be able to be moved out of the stator window during a roll change.
  • a stationary arrangement of the strip deflector according to the invention between the work roll chocks in the respective roll stand is recommended.
  • the belt deflector according to the invention is suitable both for employment on the upper work roll as well as for employment on the lower work roll in a roll stand.
  • FIG. 1 the roller arrangement according to the invention can be seen, according to which the belt deflector 100 according to the invention is employed against the bale of a roller 300.
  • the belt deflector 100 is set at a distance from its main body 110 to the roller 300.
  • the gap width d is, for example, 1 to 9 mm.
  • the band deflector 100 basically consists of the main body 110, in which at least one compressed air chamber 114 and a nozzle 116, which is connected to the compressed air chamber in a flow-conducting manner, are formed for discharging compressed air against the ball of the roller 300.
  • the compressed air is from a compressed air source 118, see FIG. 3 , which is flow-connected to the compressed-air chamber 114.
  • the flow-conducting connection between the compressed-air chamber 114 and the nozzle 116 may be formed, for example, in the form of an intermediate channel 122.
  • the nozzle 116 consists of a first nozzle channel section 116-I connected in flow communication with the compressed-air chamber 114 and one, the first
  • Nozzle channel section in the flow direction R of the compressed air downstream second nozzle channel section 116-II can either be formed directly as an extension of the compressed-air chamber 114 or be conductively connected to the compressed-air chamber 114 via an intermediate channel 122.
  • the first nozzle channel portion 116-I consists of two, preferably parallel, side walls 116-I-1; 116-I-2, wherein a first side wall 116-I-1 is referred to as facing a tip 112 of the base body 110, while the other opposing side forest 116-I-2 is referred to as facing away from the tip 112 of the base body.
  • the side wall 116-I-1 facing the tip 112 of the main body 110 is bent to form the tip 112 of the main body, forming a first tear-off edge 117.
  • a drop-shaped, convexly curved flow guide contour 120 is preferably formed between the stepped first tear-off edge 117 and the tip 112 of the main body 110.
  • the Strömungsleitkontur 120 is preferably with a concave curvature, which is preferably arcuate, smooth, ie without the formation of kinks in the tip 112 of the base body 110 via.
  • the curvature of the Strömungsleitkontur 120 can be made smaller the smaller an angle ⁇ between the flow direction R in the first nozzle channel portion 116-I and a connecting line g between the tip 112 of the base body and the first tear-off edge 117; please refer FIG. 2 ,
  • the angle between the direction of the first nozzle channel section 116-I and the intermediate channel may also serve as an indication of the height of the curvature of the flow guide contour 120.
  • Embodiment is formed between the first nozzle channel portion 116-I and the intermediate channel 122 a right angle.
  • an acute angle formed between the first nozzle channel portion 116-I and the intermediate channel 122.
  • the curvature of the Strömungsleitkontur 120 can therefore at the in FIG. 2 embodiment shown to be less pronounced than in the FIG. 1 shown embodiment.
  • the second nozzle channel section 116-II forms the extension of the first nozzle channel section and is substantially defined or delimited by the extension of the side 112-I-2 facing away from the tip 112 of the base body in the flow direction R beyond the height of the tear edge 117.
  • the side wall 116-I-2 facing away from the tip of the base body is bent away from the tip 112 of the belt deflector, forming a second tear-off edge 119 at the end of the second nozzle channel section 116-II.
  • both the first tear-off edge 117 and the second tear-off edge 119 form a sharp edge with the smallest possible radius of curvature to ensure that the air flow at the two tear-off edges does not follow the bent shape of the base body in these regions due to the Coanda effect Instead, in its original flow direction, it continues to flow on the roll bales or at least tangentially along the surface of the roll bale.
  • the side walls facing away from the tip 112 of the main body 110 may be uniformly formed in the region of the first nozzle channel section 116-I and the second nozzle channel section 116-II in the form of a single common plane.
  • the said side wall in both nozzle channel sections or else only in the second nozzle channel section may be slightly convex, bent away from the tip 112, as far as the second tear-off edge.
  • the convex curvature may then especially in the area of the second nozzle channel portion 116-II up to the second tear-off edge 110 out possibly so strong that the air flow - at a given employment of the belt deflector 100 against the bale of the roller 300 - when exiting the nozzle still impinges on the surface of the roller 300 or at least tangentially flows along the bale.
  • the convex curvature in this region may only be formed to such an extent-given a position of the belt deflector against the roller-that a tangent to the side wall 116-II of the second nozzle channel section at the second tear-off edge still hits or hits the roll bale at least tangent.
  • the tip 112 of the band deflector 100 is preferably formed as a separate component detachably connected to the base body. This is advantageous because the tip is subject to heavy wear in practice. It can be made of metal or plastic.
  • the nozzle may be formed, for example, slit-shaped. Alternatively, however, it may also be formed from a multiplicity of individual nozzles or individual bores, which are connected in flow-conducting manner to the compressed-air chamber 114.
  • the compressed air chamber 114 may be formed in the form of a plurality of N individual compressed air chambers 114-n with 1 ⁇ n ⁇ N, wherein each of the individual compressed air chambers is provided for supplying a certain portion of the nozzle 116 in the width direction with compressed air.
  • the individual compressed air chambers 114-n are preferably each connected via a separate supply line to the compressed air source 118.
  • Each of the supply lines is preferably individually shut off via its own shut-off valve 115-n with 1 ⁇ n ⁇ N.
  • the main body 110 of the inventive band deflector can be formed from a lower molded part 110-1 and an upper molded part 110-2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Advancing Webs (AREA)
  • Nozzles (AREA)
  • Cleaning In General (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
EP15707991.4A 2014-05-05 2015-03-06 Bandabweiser und walzenanordnung Active EP3140056B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102014208333 2014-05-05
DE102014210038 2014-05-26
DE102014222530.2A DE102014222530A1 (de) 2014-05-05 2014-11-05 Bandabweiser und Walzenanordnung
PCT/EP2015/054726 WO2015169475A1 (de) 2014-05-05 2015-03-06 Bandabweiser und walzenanordnung

Publications (2)

Publication Number Publication Date
EP3140056A1 EP3140056A1 (de) 2017-03-15
EP3140056B1 true EP3140056B1 (de) 2018-06-27

Family

ID=54326103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15707991.4A Active EP3140056B1 (de) 2014-05-05 2015-03-06 Bandabweiser und walzenanordnung

Country Status (13)

Country Link
US (1) US10406574B2 (ko)
EP (1) EP3140056B1 (ko)
JP (1) JP6351758B2 (ko)
KR (1) KR101867078B1 (ko)
CN (1) CN106660089B (ko)
BR (1) BR112016025858A2 (ko)
DE (1) DE102014222530A1 (ko)
ES (1) ES2688756T3 (ko)
MY (1) MY179859A (ko)
RU (1) RU2657888C2 (ko)
TW (1) TWI602625B (ko)
UA (1) UA115638C2 (ko)
WO (1) WO2015169475A1 (ko)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017101713A1 (de) * 2017-01-30 2018-08-02 Achenbach Buschhütten GmbH & Co. KG Verfahren und Vorrichtung zur Reduzierung der Walzöllast eines Walzbandes
BE1025125B1 (fr) * 2017-09-04 2018-10-31 Centre de Recherches Métallurgiques asbl-Centrum voor Research in de Metallurgie vzw Essuyeur sans contact et installation industrielle comportant un tel essuyeur
KR102511771B1 (ko) 2018-06-13 2023-03-20 노벨리스 인크. 금속 물품 가공에서 점성 물질을 제거하기 위한 시스템 및 방법
EP3651917B1 (en) * 2018-06-13 2021-06-09 Novelis, Inc. System and method for containing viscous materials in roll processing
ES2945811T3 (es) 2018-06-13 2023-07-07 Novelis Inc Sistemas y métodos para enfriar un cilindro en procesamiento de metales

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FR2602700B1 (fr) * 1986-08-14 1988-11-25 Bertin & Cie Procede et dispositif de protection d'une bande en sortie de laminoir, en particulier contre les projections de liquide de laminage
SU1440571A1 (ru) * 1986-11-24 1988-11-30 Предприятие П/Я М-5481 Устройство дл охлаждени валков и проката на сортопрокатном стане
JPH0694043B2 (ja) * 1989-05-26 1994-11-24 川崎製鉄株式会社 多段式レバース圧延機
JPH038509A (ja) * 1989-06-06 1991-01-16 Sumitomo Light Metal Ind Ltd アルミニウム熱間圧延における潤滑方法
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RU2193936C1 (ru) * 2001-12-18 2002-12-10 ОАО "Магнитогорский металлургический комбинат" Устройство для охлаждения прокатных валков
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Also Published As

Publication number Publication date
WO2015169475A1 (de) 2015-11-12
RU2016145922A (ru) 2018-06-05
CN106660089A (zh) 2017-05-10
RU2657888C2 (ru) 2018-06-18
MY179859A (en) 2020-11-18
KR101867078B1 (ko) 2018-07-23
UA115638C2 (uk) 2017-11-27
RU2016145922A3 (ko) 2018-06-05
US10406574B2 (en) 2019-09-10
KR20160146935A (ko) 2016-12-21
EP3140056A1 (de) 2017-03-15
CN106660089B (zh) 2019-01-04
US20170056945A1 (en) 2017-03-02
DE102014222530A1 (de) 2015-11-05
BR112016025858A2 (pt) 2018-06-19
TWI602625B (zh) 2017-10-21
TW201542303A (zh) 2015-11-16
ES2688756T3 (es) 2018-11-06
JP2017514699A (ja) 2017-06-08
JP6351758B2 (ja) 2018-07-04

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