EP0642851A1 - Entzunderungsvorrichtung - Google Patents

Entzunderungsvorrichtung Download PDF

Info

Publication number
EP0642851A1
EP0642851A1 EP94100317A EP94100317A EP0642851A1 EP 0642851 A1 EP0642851 A1 EP 0642851A1 EP 94100317 A EP94100317 A EP 94100317A EP 94100317 A EP94100317 A EP 94100317A EP 0642851 A1 EP0642851 A1 EP 0642851A1
Authority
EP
European Patent Office
Prior art keywords
nozzles
pumps
piston pumps
water
piston
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.)
Ceased
Application number
EP94100317A
Other languages
German (de)
English (en)
French (fr)
Inventor
Dieter Rosenthal
Joachim Pfeiffer
Horst Grafe
Max Münker
Berthold Hild
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 Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
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 Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to CA002131579A priority Critical patent/CA2131579C/en
Priority to FI944126A priority patent/FI944126A7/fi
Publication of EP0642851A1 publication Critical patent/EP0642851A1/de
Ceased legal-status Critical Current

Links

Images

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 descaling device for slabs or strips in hot rolling mills with nozzles fed by a pressure water piston pump for removing scale adhering to the surface.
  • Secondary scale is formed on material that has already been rolled if it is heated to the rolling temperature or is kept at this temperature.
  • Primary scale means the scale that is formed on the material after casting slabs or strips. The primary scale is much closer to the material than the secondary scale. If the cast material is kept at a certain temperature for a while, more and more tightly fitting scale is formed. The adhesion of the scale is also heavily dependent on the corresponding feed materials.
  • the descaling of slabs or strips with secondary scale is carried out with pressurized water which is sprayed onto the surface of the slab or strip via nozzles.
  • the pressurized water is usually conveyed by centrifugal pumps that work up to a maximum of 300 bar. The resulting impact force and the amount of water determine the descaling effect. With this arrangement, satisfactory results are achieved with secondary scale.
  • the pull-in speed on the first hot rolling stand is approximately 1/3 of that for material that has already been rolled.
  • the cast material is cooled to such an extent that the temperature for the hot rolling process falls below the minimum, even with the same amount of water per time. Even if you convert the amount of water per time to the slower feed rate, it is hardly possible to increase the amount of water for cast materials, since the material would cool down more simply due to the slower feed rate and excessive cooling would take place if the amount of water were increased.
  • the invention is therefore based on the object to further develop a descaling device for primary scale so that the pressure can be adapted to the requirements and thus the wear and the cost of descaling can be reduced.
  • a possible partial solution would be to make the piston pump adjustable in its speed and therefore in its delivery rate.
  • a feed pump which should be adjustable over a range from 0 to approx. 600 bar, is, however, very voluminous and expensive, so that the wear, however, could not be reduced in cost.
  • the object is achieved in that at least one further pressure water piston pump is provided, that the piston pumps are connected in parallel and that the pumps can each be switched on and off separately.
  • piston pumps can deliver an almost constant volume flow independent of pressure (see Fig. 1, which shows the P / Q behavior of a piston pump).
  • Fig. 1 shows the P / Q behavior of a piston pump.
  • the resistance of nozzles and lines in a descaling system shows the dependence of the pressure on the volume flow as a square function (see Fig. 2 Nozzle resistance characteristic).
  • the resistance characteristic of a descaling system therefore corresponds to a certain square function if no changes are made to the number of nozzles or the size of the nozzle openings.
  • An increase in the pressure at the nozzles can therefore only take place on the line of the square function, i.e. that is, an increase in the flow rate must also be accepted for an increase in pressure.
  • At least one piston pump can be adjusted in its volume flow. This allows each point of intersection to be set on the resistance characteristic so that an even more optimal pressure / volume flow ratio can be achieved.
  • piston pumps If essentially the same piston pumps are provided as claimed in claim 3, the manufacture, arrangement and storage of piston pumps is possible at low cost.
  • the pressure of the descaling device and thus the descaling effect can be adapted even better to the corresponding requirements if a second row of nozzles is provided.
  • the first row of nozzles causes descaling and the second row of nozzles completely descaled the material, whereby the two rows of nozzles can each work with a pressure which is lower than that of descaling devices with only one row of nozzles.
  • Descaling systems are even conceivable in which the first row of nozzles is fed by centrifugal pumps and only the second row by piston pumps.
  • the rows of nozzles must be separated from one another, for example by mechanical or pneumatic locks or simply by an appropriate distance, so that the pressurized water jets or the water remaining on the material to be ignited does not interfere with one another.
  • Figure 4 shows cast material to be rolled, such as. B.
  • a slab 1 In the area of the slab 1, nozzles 4, 4 'of a descaling device 5 are arranged between a driver 2 and the first stand 3 of a hot rolling mill.
  • the nozzles 4, 4 ' are connected to two piston pumps 6, 7, which withdraw water from a tank 9 via a filter 8 and transport them to the nozzles 4, 4'.
  • the piston pumps 6, 7 can each be controlled separately via a schematically illustrated control device 10.
  • FIG. 5 shows, in addition to the descaling device according to FIG. 4, further nozzles 11, 11 'which are connected to the filter 8 by means of two piston pumps 6', 7 '.
  • the piston pumps 6 ', 7' can each be controlled separately via a schematically illustrated control device 10 '.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)
  • Nozzles (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP94100317A 1993-09-09 1994-01-12 Entzunderungsvorrichtung Ceased EP0642851A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002131579A CA2131579C (en) 1993-09-09 1994-09-07 Descaling device
FI944126A FI944126A7 (fi) 1993-09-09 1994-09-08 Hilseenpoistoaine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4330519 1993-09-09
DE4330519A DE4330519B4 (de) 1993-09-09 1993-09-09 Entzunderungsvorrichtung

Publications (1)

Publication Number Publication Date
EP0642851A1 true EP0642851A1 (de) 1995-03-15

Family

ID=6497241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94100317A Ceased EP0642851A1 (de) 1993-09-09 1994-01-12 Entzunderungsvorrichtung

Country Status (6)

Country Link
EP (1) EP0642851A1 (enrdf_load_stackoverflow)
JP (1) JPH0788536A (enrdf_load_stackoverflow)
KR (1) KR100260598B1 (enrdf_load_stackoverflow)
CN (1) CN1053400C (enrdf_load_stackoverflow)
DE (1) DE4330519B4 (enrdf_load_stackoverflow)
TW (1) TW299255B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003024636A1 (de) * 2001-09-19 2003-03-27 Sms Demag Aktiengesellschaft Spritzbalken für eine hydraulische entzunderungsanlage

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29718948U1 (de) 1997-10-24 1997-12-11 Wepuko-Hydraulik GmbH & Co Pumpen- und Kompressorenfabrik, 72555 Metzingen Geregelte hydromechanische Entzunderungsvorrichtung
DE102005047936A1 (de) * 2005-10-06 2007-04-12 Sms Demag Ag Verfahren und Vorrichtung zum Reinigen von Brammen, Dünnbrammen, Profilen oder dergleichen
KR101266550B1 (ko) * 2008-05-13 2013-05-24 신닛테츠스미킨 카부시키카이샤 열연 강판의 제조 방법
EP2174729A1 (de) * 2008-10-07 2010-04-14 Siemens Aktiengesellschaft Entzunderungseinrichtung mit drehzahlvariablem Pumpenantrieb
CN102166638B (zh) * 2011-03-25 2013-01-09 中国重型机械研究院有限公司 氧化铁皮去除系统
CN103658204B (zh) * 2012-09-25 2016-06-22 宝山钢铁股份有限公司 一种射流清洗喷嘴的布置方法
DE102016223721A1 (de) * 2016-03-18 2017-09-21 Sms Group Gmbh Vorrichtung und Verfahren zum Erzeugen eines Werkstücks eines vorbestimmten Typs

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5970418A (ja) * 1982-10-13 1984-04-20 Sumitomo Metal Ind Ltd 熱間圧延デスケ−ラ−の運転制御方法
JPS60255213A (ja) * 1984-05-30 1985-12-16 Nippon Steel Corp 金属材料の熱間加工用デスケ−リング方法
JPS61119322A (ja) * 1984-11-13 1986-06-06 Ishikawajima Harima Heavy Ind Co Ltd デスケ−リング方法
JPS61283411A (ja) * 1985-06-07 1986-12-13 Nippon Kokan Kk <Nkk> 熱間圧延におけるデスケ−リング方法
DE4007727A1 (de) * 1989-03-21 1990-09-27 Tiefenbach Gmbh Entzunderungsventil

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATA62781A (de) * 1981-02-11 1983-07-15 Hoerbiger Ventilwerke Ag Druckventil fuer radial- und axialkolbenpumpen
JPS63248997A (ja) * 1987-04-06 1988-10-17 Hitachi Ltd 自動給水装置およびその制御方法
DE8909713U1 (de) * 1989-08-12 1989-10-05 Bobby Joseph Vilsmeier GmbH & Co KG, 67098 Bad Dürkheim Pumpenaggregat für Hochdruck-Reinigungs- und Desinfektionsanlagen
JPH04284180A (ja) * 1991-03-11 1992-10-08 Toyota Autom Loom Works Ltd 可変容量ピストンポンプ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5970418A (ja) * 1982-10-13 1984-04-20 Sumitomo Metal Ind Ltd 熱間圧延デスケ−ラ−の運転制御方法
JPS60255213A (ja) * 1984-05-30 1985-12-16 Nippon Steel Corp 金属材料の熱間加工用デスケ−リング方法
JPS61119322A (ja) * 1984-11-13 1986-06-06 Ishikawajima Harima Heavy Ind Co Ltd デスケ−リング方法
JPS61283411A (ja) * 1985-06-07 1986-12-13 Nippon Kokan Kk <Nkk> 熱間圧延におけるデスケ−リング方法
DE4007727A1 (de) * 1989-03-21 1990-09-27 Tiefenbach Gmbh Entzunderungsventil

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 126 (M - 477) 1986 *
PATENT ABSTRACTS OF JAPAN vol. 10, no. 307 (M - 527) 1986 *
PATENT ABSTRACTS OF JAPAN vol. 11, no. 149 (M - 588) 1987 *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 177 (M - 317) 1984 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003024636A1 (de) * 2001-09-19 2003-03-27 Sms Demag Aktiengesellschaft Spritzbalken für eine hydraulische entzunderungsanlage
CZ297372B6 (cs) * 2001-09-19 2006-11-15 Sms Demag Aktiengesellschaft Ostrikovací nosník pro hydraulické zarízení k odstranování okují
KR100859316B1 (ko) * 2001-09-19 2008-09-19 에스엠에스 데마그 악티엔게젤샤프트 유압 스케일 제거 설비용 스프레이 붐

Also Published As

Publication number Publication date
TW299255B (enrdf_load_stackoverflow) 1997-03-01
DE4330519B4 (de) 2004-08-05
JPH0788536A (ja) 1995-04-04
CN1100011A (zh) 1995-03-15
CN1053400C (zh) 2000-06-14
KR100260598B1 (ko) 2000-07-01
DE4330519A1 (de) 1995-03-16
KR950007968A (ko) 1995-04-15

Similar Documents

Publication Publication Date Title
EP0771596B1 (de) Produktionsanlage zum kontinuierlichen- oder diskontinuierlichen Auswalzen von Warmband
DE68919618T2 (de) Entzundern von Walzgut.
DE3027846A1 (de) Verfahren und einrichtung zum abkuehlen von blech, insbesondere stahlblech, mittels wasser
DE102016217562A1 (de) Vorrichtung und Verfahren zum Entzundern eines bewegten Werkstücks
EP0061441A2 (de) Anlage zum Warmwalzen von band- oder tafelförmigem Walzgut
EP1062066A2 (de) Anstellverfahren für ein rollensegment einer stranggiessanlage
EP1900449B1 (de) Spritzbalken einer hydraulischen Entzunderungsanlage und Verfahren zum Betreiben eines solchen Spritzbalkens
EP1456421A1 (de) Verfahren und einrichtung zum kontrollierten richten und k h len von aus einem warmband-walzwerk auslaufendem breitem metallband, insbesondere von stahlband oder blech
EP3341142A1 (de) Anlage nach dem csp-konzept sowie verfahren zum betreiben einer solchen anlage
EP0642851A1 (de) Entzunderungsvorrichtung
DE2605011C2 (de) Verfahren und Vorrichtung zum Entzundern beim kontinuierlichen Umformen, insbesondere Walzen, von langgestrecktem, metallischem Gut, insbesondere Stahl
DE2942270A1 (de) Entzunderungsanlage zum entzundern von warmband
WO2019101486A1 (de) Kühlbalken und kühlprozess mit variabler abkühlrate für stahlbleche
DE10032833B4 (de) Walzwerksanlage
EP1427549B1 (de) Spritzbalken für eine hydraulische entzunderungsanlage
EP0806252B1 (de) Verfahren zum Betreiben einer Walzgerüstanlage
DE19702718C1 (de) Verfahren und Vorrichtung zur Kühlmediumsteuerung bei einer Stranggießanlage
DE4009742C2 (de) Anordnung zum Abstreifen des Kühlwassers von langgestrecktem Walzgut
DE102021209261A1 (de) Verfahren zur Steuerung einer Walzgutführung in einer Walzstraße sowie Zwischengerüstführung
DE1025817B (de) Kontinuierliches Feineisenwalzwerk
DE102019218013A1 (de) Vorrichtung und Verfahren zum Kühlen und Führen eines aus einer Kokille austretenden Metallstrangs
DE3837302A1 (de) Kuehlrohr fuer walzadern
DE2018489C3 (de) Einstelteinrichtung für die in im Walzenständer geführten Einbaustücken gelagerten Walzen relativ zur Walzlinie
EP0707903A2 (de) Verfahren und Vorrichtung zum Vermeiden der Unparallelität von Trägerprofilen
DE10202182B4 (de) Arbeitsverfahren zum Walzen von Draht oder Feineisen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19940131

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE ES FR GB IT MC NL SE

17Q First examination report despatched

Effective date: 19960125

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19970419