EP0879101B1 - Verfahren zum entzundern eines werkstückes - Google Patents
Verfahren zum entzundern eines werkstückes Download PDFInfo
- 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
Links
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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)
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)
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)
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 |
-
1996
- 1996-02-02 AT AT0019596A patent/AT406234B/de not_active IP Right Cessation
-
1997
- 1997-01-29 US US09/117,618 patent/US6149733A/en not_active Expired - Lifetime
- 1997-01-29 WO PCT/AT1997/000015 patent/WO1997027955A1/de not_active Application Discontinuation
- 1997-01-29 EP EP97901471A patent/EP0879101B1/de not_active Expired - Lifetime
- 1997-01-29 JP JP9527172A patent/JP2000504277A/ja active Pending
- 1997-01-29 DE DE59705387T patent/DE59705387D1/de not_active Expired - Lifetime
- 1997-01-29 KR KR19980705830A patent/KR19990082108A/ko not_active Application Discontinuation
- 1997-01-29 CA CA002245575A patent/CA2245575C/en not_active Expired - Fee Related
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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