EP0879101B1 - Verfahren zum entzundern eines werkstückes - Google Patents

Verfahren zum entzundern eines werkstückes Download PDF

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Publication number
EP0879101B1
EP0879101B1 EP97901471A EP97901471A EP0879101B1 EP 0879101 B1 EP0879101 B1 EP 0879101B1 EP 97901471 A EP97901471 A EP 97901471A EP 97901471 A EP97901471 A EP 97901471A EP 0879101 B1 EP0879101 B1 EP 0879101B1
Authority
EP
European Patent Office
Prior art keywords
liquid
rotor
control
jet
workpiece
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.)
Expired - Lifetime
Application number
EP97901471A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0879101A1 (de
Inventor
Gerlinde Djumlija
Karl Kremmaier
Johann Oberhumer
Andreas Schweighofer
Herwig Wrulich
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 Austria GmbH
Original Assignee
Voest Alpine Industrienlagenbau 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 Voest Alpine Industrienlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
Publication of EP0879101A1 publication Critical patent/EP0879101A1/de
Application granted granted Critical
Publication of EP0879101B1 publication Critical patent/EP0879101B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21B45/04—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 de-scaling, e.g. by brushing
    • B21B45/08—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 de-scaling, e.g. by brushing hydraulically

Definitions

  • the invention relates to a method for descaling a workpiece, in particular one Rolled stock, the workpiece being moved past a rotor descaling device and in this at least one jet of liquid which flows around a surface to be descaled of the workpiece intersecting axis of rotation rotates on the surface to be descaled is sprayed, the liquid jet being intermittent, i.e. temporarily suspended, educated is, as well as a rotor descaling device for performing the method.
  • Rotor descaling devices are for example from DE-A - 43 28 303 or EP-A - 0 586 823 or DE-A 31 25 146 are known.
  • Rotor descaling devices are on rotating beams or rotating nozzle holders Spray nozzles are arranged, which are directed against the workpiece surface to be descaled.
  • the axis of rotation is generally perpendicular to the workpiece surface to be descaled aligned.
  • Rotor descaling devices of the type described above are from the US-A 5 220 935 and DE-A 23 55 893 are already known. A decrease in Liquid demand is achieved here by the liquid jet being intermittent is trained. Furthermore, a double application of workpiece surfaces with Liquid jets and thus unnecessary supercooling of the rolling stock, especially in the With regard to a subsequent rolling process, avoided. This embodiment however, does not yet enable optimal descaling of a workpiece with minimal Fluid requirement.
  • the invention aims to avoid the disadvantages and difficulties described above and sets itself the task of a method and a facility for carrying out the To create process in which by the intermittent formation of the liquid jet caused effect of increased jet pressures intensified and over the surface of the Workpiece is distributed. Furthermore, an optimal descaling with minimization of the Fluid requirements are made possible. In particular, it should be possible, not just that Lower fluid requirements, but also reduce fluid pressure without Losing in terms of the quality of the surfaces to be descaled.
  • This object is achieved in that the suspension of the formation of a Liquid jet two or more times in succession, but only for a short time, i.e. maximum via a liquid jet rotation of 10 °, preferably 5 °.
  • liquid jets are expediently formed at the same time.
  • a rotor descaling device for performing the method according to the invention with a liquid feed line to a stator and one opposite the stator rotatably mounted rotor with at least one nozzle to form a liquid jet is provided, is characterized in that between the rotor and the stator Interruption device with which the liquid supply to a nozzle is intermittent is feasible is provided.
  • the interruption device is expediently immovable relative to the stator arranged control disc formed with at least one control opening for the purpose of time limited passage of liquid to the nozzle is provided.
  • a structurally simple solution is characterized in that a plurality of Passage openings are provided and each passage opening to a respective nozzle of the rotor leads, with at least two mouths of the passage openings each in different Radial distances from the axis of rotation of the rotor open into the liquid chamber and the Control disk each corresponding to an opening of a passage opening with a allow a liquid passage from the liquid chamber to the passage opening Control opening is provided.
  • control openings are expedient at one and the same radial distance from the axis of rotation of the rotor is provided, which advantageously in one and the same Radial distance from the axis of rotation of the rotor arranged control openings are grouped together.
  • Control opening As a preferred embodiment Control slot extending in the circumferential direction of the control disk.
  • the nozzles are designed as omnidirectional nozzles. In this way, higher jet pressures can be achieved in comparison to flat jet nozzles, since the jet is only minimally expanded with omnidirectional nozzles.
  • FIG. 1 schematically illustrating a section through a rotor descaling device, the section being taken through the axis of rotation.
  • FIG. 2 shows a view of the rotor descaling device in the direction of FIG Arrow II.
  • 3 shows a partial top view of the rotor head according to line III-III of FIG. 1 and
  • FIG. 4 shows a top view of a control disk according to arrow IV of FIG. 1.
  • FIG. 5 illustrates a spray pattern on a rolling stock which is shown in FIG Top view is shown.
  • 6 illustrates the use of rotor descaling devices according to the invention for particularly wide workpieces, such as continuous cast slabs etc.
  • a rotor descaling device 1 In the case of a rotor descaling device 1, one by one is in a transmission housing 2 Rotation axis 3 rotatably supported rotor 4 with its rotor shaft 5 supported by bearings 6. On the rotor shaft 5 is a drive pinion 7, which is not shown with a Rotor drive combs, fastened. At the end protruding out of the gear housing 2 Rotor shaft 5, a rotor head 8 is provided which extends radially outwards Consoles 9 is provided which carry spray nozzles 10. According to the illustrated Exemplary embodiments are twelve consoles 9, which extend circumferentially around the rotor head 8 are evenly distributed, provided, each of which a console 9 with a Spray nozzle 10 is provided. The spray nozzles 10 are designed as omnidirectional nozzles and are on one each radially from the spray nozzle 10 through the bracket 9 and the rotor head 8 inwardly extending passage opening 11 connected by line.
  • the rotor shaft 5 is hollow and is inside a hollow tube 12, the so-called stator.
  • This stator 12 protrudes with one end 13 from the Gear housing 2 and is with this end 13 to a pressure medium supply line 14, such as a High pressure water pipe, connected.
  • a pressure medium supply line 14 such as a High pressure water pipe
  • Both the control disk 17 and the stator 12 are forming one Liquid chamber 19 (high-pressure liquid chamber) by means of a tight on the rotor 8 attached cover 20 covers.
  • control openings 18, 18 ', 18 "of the control disk are provided at different radial distances r 1 , r 2 and r 3 from the axis of rotation 3 of the rotor shaft 5, the radial distances r 1 to r 3 being so are selected so that the control openings 18 to 18 "can be brought into alignment with the orifices 21, 21 ', 21" of the through openings 11 provided on the inside of the rotor, which can be seen from FIG. 3, ie the through openings 11 are also up to different radial distances r 1 to r 3 extend inward from the axis of rotation 3 of the rotor shaft 5.
  • control openings 18, 18 ', 18 " are designed as slots, so that the Align the orifices 21 to 21 “of the through openings 11 on the inside of the rotary head the control slots 18, 18 ', 18 "over a longer range of rotation.
  • the function of the rotor descaling device 1 is as follows:
  • the liquid jet is formed as long as the control opening 18, 18 ', 18 "with the corresponding passage opening 11 is connected by line. If there is one Disconnection of this connection, the liquid jet is interrupted and it becomes again formed when the next control opening 18, 18 ', 18 "- or the same Control opening after rotation through 360 ° - again with the passage opening 11 is connected by line. There is therefore a temporary suspension Liquid jet.
  • the control disk 17 immovably attached to the stator 12 thus forms one Interruption device with which the liquid supply to each nozzle 10 in Intervals are interruptible.
  • Circular lines 25 illustrate the impingement of the intermittently formed liquid jets on the Workpiece surface 23, while this is shown by the arrow 26 Feed direction is moved past the rotor descaling device 1.
  • Sections a 2 adjoining the center line 27 of the workpiece 22 are acted upon by nozzles 10, which are supplied by control openings 18 ′ arranged at an average distance r 2 from the axis of rotation 3, and the three central sections a 1 are provided by the three closely arranged control Slots 18 ", which are arranged at the smallest distance r 1 from the axis of rotation 3 of the rotor 4, are formed.
  • Fig. 6 illustrates the arrangement of several large rotor descaling devices 1 Workpiece surfaces 23, such as occur with slabs or wide belts.
  • nozzles 10 are provided at different radial distances from the axis of rotation 3 of the rotor 4 and the control openings 18, 18 ', 18 "can be arranged such that several Nozzles 10 simultaneously or the nozzles 10 one after the other intermittently with liquid be charged.
  • Groups of nozzles can also have different nozzle diameters or they can also be formed by different types of nozzles. This allows the Constant exposure to water across the cross-section of the workpiece to be ignited being held.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP97901471A 1996-02-02 1997-01-29 Verfahren zum entzundern eines werkstückes Expired - Lifetime EP0879101B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT195/96 1996-02-02
AT0019596A AT406234B (de) 1996-02-02 1996-02-02 Verfahren zum entzundern eines werkstückes
AT19596 1996-02-02
PCT/AT1997/000015 WO1997027955A1 (de) 1996-02-02 1997-01-29 Verfahren zum entzundern eines werkstückes

Publications (2)

Publication Number Publication Date
EP0879101A1 EP0879101A1 (de) 1998-11-25
EP0879101B1 true EP0879101B1 (de) 2001-11-14

Family

ID=3484010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97901471A Expired - Lifetime EP0879101B1 (de) 1996-02-02 1997-01-29 Verfahren zum entzundern eines werkstückes

Country Status (8)

Country Link
US (1) US6149733A (ja)
EP (1) EP0879101B1 (ja)
JP (1) JP2000504277A (ja)
KR (1) KR19990082108A (ja)
AT (1) AT406234B (ja)
CA (1) CA2245575C (ja)
DE (1) DE59705387D1 (ja)
WO (1) WO1997027955A1 (ja)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004060825A1 (de) * 2004-12-17 2006-06-29 Sms Demag Ag Verfahren und Vorrichtung zum Entzundern von Oberflächen
DE202006006572U1 (de) * 2006-04-25 2006-07-06 Airmatic Gesellschaft für Umwelt und Technik mbH Vorrichtung zum Erzeugen eines rotierenden Hochdruckstrahls
EP1908526A1 (fr) * 2006-10-04 2008-04-09 Siemens S.A.S. Dispositif d'éjection d'un mélange diphasique
AT507663B1 (de) 2009-04-09 2010-07-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung zum aufbereiten von warmwalzgut
US9321067B2 (en) * 2010-07-08 2016-04-26 Federal Signal Corporation Seal cartridge for a rotating nozzle assembly
DE102015206393A1 (de) * 2015-04-10 2016-10-13 Sms Group Gmbh Vorrichtung zum Reinigen der Oberfläche eines Gegenstandes
DE102015226658A1 (de) 2015-12-23 2017-06-29 Sms Group Gmbh Vorrichtung zum Entzundern eines Werkstücks
DE102015226657A1 (de) 2015-12-23 2017-06-29 Sms Group Gmbh Rotorentzunderung
DE102016217560A1 (de) 2016-03-18 2017-09-21 Sms Group Gmbh Vorrichtung und Verfahren zum Entzundern eines Werkstücks
CN112584941B (zh) * 2018-08-21 2024-03-08 赫梅蒂克水力公司 用于对轧件进行除鳞的装置和方法
CN115254994B (zh) * 2022-08-24 2024-09-03 重庆钢铁股份有限公司 一种钛板轧制吹扫方法、装置、设备及存储介质

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1159275A (fr) * 1955-09-26 1958-06-25 Dispositif de pulvérisation pour tours de refroidissement
DE1044008B (de) * 1956-11-07 1958-11-20 Schloemann Ag Spritzvorrichtung zum Entzundern von Walzgut
DE1427555A1 (de) * 1962-07-17 1968-12-12 Ajem Lab Inc Intermittierende Oberflaechenbearbeitung
CH570855A5 (ja) * 1973-06-12 1975-12-31 Cerac Inst Sa
US4151808A (en) * 1977-03-10 1979-05-01 Circle Machine Co., Inc. Apparatus for spraying articles carried by a conveyor
SU899189A1 (ru) * 1980-05-22 1982-01-23 Днепропетровское Отделение Института Механики Ан Усср Способ гидроабразивной очистки холодного металла от окалины
DE3125146A1 (de) * 1981-06-26 1983-01-13 Woma-Apparatebau Wolfgang Maasberg & Co Gmbh, 4100 Duisburg Vorrichtung zum entzundern von heissen stahlbloecken
SU1533799A1 (ru) * 1988-06-13 1990-01-07 Донецкий политехнический институт Устройство дл гидросбива окалины с нагретых заготовок
JPH0698379B2 (ja) * 1990-09-28 1994-12-07 新日本製鐵株式会社 金属スケールの除去方法
US5220935A (en) * 1990-12-28 1993-06-22 Carolina Equipment & Supply Co., Inc. Apparatus and method for cleaning with a focused fluid stream
DE69314275T2 (de) * 1992-07-31 1998-04-30 Danieli Off Mecc Wasser verwendende Entzunderungsvorrichtung
DE4328303C2 (de) * 1992-12-23 1997-02-13 Juergen Gaydoul Einrichtung zum Entzundern von warmem Walzgut
AT399833B (de) * 1993-08-23 1995-07-25 Voest Alpine Ind Anlagen Walzeinrichtung

Also Published As

Publication number Publication date
ATA19596A (de) 1999-08-15
AT406234B (de) 2000-03-27
CA2245575C (en) 2005-06-21
KR19990082108A (ko) 1999-11-15
EP0879101A1 (de) 1998-11-25
US6149733A (en) 2000-11-21
DE59705387D1 (de) 2001-12-20
JP2000504277A (ja) 2000-04-11
WO1997027955A1 (de) 1997-08-07
CA2245575A1 (en) 1997-08-07

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