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EP1105235B1 - Vorrichtung zum hydraulischen anstellen der rollen von strangführungssegmenten einer stranggiessanlage - Google Patents

Vorrichtung zum hydraulischen anstellen der rollen von strangführungssegmenten einer stranggiessanlage Download PDF

Info

Publication number
EP1105235B1
EP1105235B1 EP99944388A EP99944388A EP1105235B1 EP 1105235 B1 EP1105235 B1 EP 1105235B1 EP 99944388 A EP99944388 A EP 99944388A EP 99944388 A EP99944388 A EP 99944388A EP 1105235 B1 EP1105235 B1 EP 1105235B1
Authority
EP
European Patent Office
Prior art keywords
switching valves
piston
hydraulic
valves
rollers
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.)
Revoked
Application number
EP99944388A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1105235A1 (de
Inventor
Christian Geerkens
Ralf Hartmann
Berthold Hild
Meinhard Watzlaw
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7877508&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1105235(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP1105235A1 publication Critical patent/EP1105235A1/de
Application granted granted Critical
Publication of EP1105235B1 publication Critical patent/EP1105235B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing

Definitions

  • the invention relates to a device for the hydraulic adjustment of components, in particular the roles of strand guide segments of a continuous caster, with hydraulic cylinders, each through a piston with piston rod in a cylinder space and an annular cylinder space are divided, the cylinder spaces through tax organs alternately and in opposite directions and simultaneously with one Pressure source and a pressure sink are connectable.
  • the casting process begins in a mold. Emerges from this the superficially solidified cast strand extends vertically and is divided into segments of the strand deflected by a certain radius by 90 ° and to a subsequent one horizontally arranged directional drivers.
  • the leadership of the Cast strand is done by means of guide rollers that can be adjusted by hydraulic cylinders are. This can cause, among other things, roller wear and changed Casting parameters are taken into account.
  • To control the hydraulic cylinders generally used continuous valves; these require due to their exact Fits fine-filtered hydraulic oil. The one associated with oil filtering Effort is considerable. There is also hydraulic oil in the casting machine and rolling mill area always risk of fire.
  • the invention has for its object a hydraulic system for adjustment of strand guide segments to create a comparatively small Demand for the cleanliness of the operating fluid and a low fire risk having.
  • the task is solved in that only 2/2-way valves as control elements are provided. Switching valves are either closed or open, while continuous valves can also take any intermediate position. That is why switching valves tolerate coarse dirt particles without clogging, while the possible gap opening of a continuous valve on clean working medium is instructed to prevent seat contamination. Moreover need the valve pistons of the switching valves in contrast to the continuous valves no tight fit, as they open and close at the stop Center closed position in the seat itself. This is another requirement the cleanliness and also the lubricity of the working fluid switching valves are significantly lower than continuous valves. That means less Filtering effort and trouble-free use of water oil emulsions as working fluid. In addition to the lower effort for the switching valves and fire safety is important for the type and the cleanliness of the working fluid a decisive advantage of the solution according to the invention.
  • the switching valves can be controlled via a three-point controller are.
  • the three-point controller only works with the plus, minus and zero positions. at Plus, one switching valve pair is energized, the other one is negative, while it is zero both switching valves are de-energized and therefore closed. This results in a simple controller structure.
  • the solenoids of the switching valves have a three-point controller or pulse width modulation can be controlled. While with the three-point control the opening time interval of the switching valves as a whole is varied, is the number of constant short opening intervals for pulse width modulation variable (variable duty cycle).
  • An advantageous embodiment of the invention provides that the three-point controller and the pulse width modulators as electrical hardware or as software in one Computers are integrated. This optimizes the duty cycle in the direction of switching frequency reduction. With pulse width modulation As with the three-point control, there is always an outlet and inlet switching valve at the same time controlled because the inflow volume of a cylinder space is always the same Discharge volume of the other corresponds.
  • each piston has a connecting rod to one Position sensor is connected, which after exceeding an upper or lower Limit of the piston position triggers the control.
  • the position transmitter enable a closed control loop for the piston position. It follows from the determination of a hysteresis of the permissible piston position by an upper one and the lower limit thereof a simple structure and a simple one Commissioning of the three-point controller.
  • FIG. 1 shows the switching valves (1a, b, c, d) the hydraulic circuit of a hydraulic cylinder (2) leading to a valve block (3) are summarized.
  • the switching valves (1a, b) are over a first Link point (4) with a pressure sink (5), the switching valves (1c, d) via a second connection point (6) can be connected to a pressure source (7).
  • the switching valves (1a, c) are also via a third connection point (8) with a Cylinder chamber (9), the switching valves (lb, d) via a fourth connection point (10) connected to an annular cylinder chamber (11) of the hydraulic cylinder (2).
  • the cylinder chamber (9) and the ring cylinder chamber (11) are sealed by a piston (12) divided, the one emerging from the ring cylinder chamber (11) piston rod (13) having. From Fig. 1 is the very compact and with little effort realized arrangement of the valve block (3).
  • FIG. 2 is a valve block with a hydraulic cylinder (2) and a simplified Representation of the electrical control of the switching valves (1a, b, c, d).
  • Fig. 2 also shows the connection points (4, 6, 8, 10) for connecting the Switching valves (1a, b, c, d) with the pressure sink (5) and the pressure source (7), the Cylinder chamber (9) and the ring cylinder chamber (11).
  • the piston (12) is through a Connecting rod (14) with a position sensor (15) connected to the respective Position of the piston (12) relative to the hydraulic cylinder (2) indicates.
  • the switching valves (1a, b, c, d) each have an electromagnet (16) which is connected to electrical lines (17a, b, c, d) with a three-point controller (18) or a pulse width modulator (19) connected is. Three-point controller (18) and pulse width modulator (19) are as Realized electronic hardware or integrated as software in a computer (20).
  • the switching valves (1a, b, c, d) have springs (21) which they have when there is no current Shoot the electromagnet (16).
  • the piston rods (13) are through glands (22) sealed, which is also used to support the hydraulic cylinder (2) on one half the strand guide segments (35, Fig. 4) are used. They carry at their free end an articulated head (23) for connection to the other half of the Strand guide segments (35).
  • FIG 3 shows a simplified circuit diagram of the hydraulic oil circuit and the Control of the valve blocks (3) for the four hydraulic cylinders (2) one Strand guide segment (35, Fig. 4). In the same way you can Straighteners and saws are turned on.
  • a control cabinet (24) is with a Computer (25) connected, by means of the software, the switching valve blocks (3) by means of Three-point controller or pulse width modulation can be controlled.
  • the control cabinet (24) has, among other things, a network card (26), a central processor unit (CPU) (27), a memory (28), an interface (29).
  • an SSI interface for connection to the position transmitter (15).
  • Figure 4 basically shows the same as Fig. 3, but with a Strand guide segment (35) in perspective. This has rolls (36) on, between which the cast strand (37) to be guided is located and the Have supports (38). The latter are by the hydraulic cylinders (2) and by the piston (12) by means of the piston rod (13). In the Hydraulic lines between the switching valve blocks (3) and the hydraulic cylinders (2) pressure transmitters (39) are installed to monitor the process. Your signals together with those of the switching valve block (3) in one input / output Assembly (40) collected and passed on to the digital / analog converter (30). The signals from the position sensors (15) are routed to the interface (29).
  • the system according to the invention works as follows: If the position transmitter (15) indicate a deviation of the target position of the rollers (36) will be exceeded a certain upper or lower limit by means of three-point control or Pulse width modulation by controlling the corresponding switching valves (1a, b, c, d) the target position is restored.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Continuous Casting (AREA)
  • Servomotors (AREA)
  • Rotary Presses (AREA)
EP99944388A 1998-08-14 1999-08-13 Vorrichtung zum hydraulischen anstellen der rollen von strangführungssegmenten einer stranggiessanlage Revoked EP1105235B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19836843 1998-08-14
DE19836843A DE19836843A1 (de) 1998-08-14 1998-08-14 Vorrichtung zum hydraulischen Anstellen der Rollen von Strangführungssegmenten einer Stranggießanlage
PCT/EP1999/005944 WO2000009279A1 (de) 1998-08-14 1999-08-13 Vorrichtung zum hydraulischen anstellen der rollen von strangführungssegmenten einer stranggiessanlage

Publications (2)

Publication Number Publication Date
EP1105235A1 EP1105235A1 (de) 2001-06-13
EP1105235B1 true EP1105235B1 (de) 2003-10-01

Family

ID=7877508

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99944388A Revoked EP1105235B1 (de) 1998-08-14 1999-08-13 Vorrichtung zum hydraulischen anstellen der rollen von strangführungssegmenten einer stranggiessanlage

Country Status (16)

Country Link
US (1) US6540010B1 (uk)
EP (1) EP1105235B1 (uk)
JP (1) JP2002522231A (uk)
KR (1) KR100593720B1 (uk)
CN (1) CN1329145C (uk)
AT (1) ATE250997T1 (uk)
BR (1) BR9912898A (uk)
CA (1) CA2340351C (uk)
DE (2) DE19836843A1 (uk)
ES (1) ES2209494T3 (uk)
ID (1) ID28771A (uk)
RU (1) RU2226448C2 (uk)
TR (1) TR200100466T2 (uk)
TW (1) TW418133B (uk)
UA (1) UA73723C2 (uk)
WO (1) WO2000009279A1 (uk)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007016045A1 (de) 2007-03-30 2008-10-02 Sms Demag Ag Vorrichtung zum hydraulischen Anstellen von Bauteilen

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10025452A1 (de) * 2000-05-23 2001-11-29 Sms Demag Ag Verfahren und Einrichtung zum Anstellen eines oder mehrerer Rollensegmente in einer Stranggießanlage für Metalle, insbesondere für Stahlwerkstoffe
DE10204064A1 (de) * 2001-12-18 2003-07-03 Sms Demag Ag Maulweitenregelung an Segmenten für Stranggießanlagen
DE102004054296B4 (de) * 2004-11-09 2021-11-11 Sms Group Gmbh Steuer- und / oder Regeleinrichtung für ein Stützrollengerüst einer Stranggießvorrichtung für Metalle, insbesondere für Stahlwerkstoffe
DE102005028703A1 (de) * 2005-06-20 2006-12-28 Siemens Ag Verfahren zur Regelung und/oder Steuerung eines Anstellsegmentes in einer Stranggießanlage und Vorrichtung hierfür
DE102005055530A1 (de) * 2005-11-22 2007-05-24 Sms Demag Ag Verfahren und Vorrichtung zum Anstellen von mindestens einem Rollensegment einer Strangführungseinrichtung an einen Strang
DE102006048511A1 (de) * 2006-10-13 2008-04-17 Sms Demag Ag Strangführungsvorrichtung und Verfahren für deren Betrieb
DE102007006458A1 (de) * 2007-02-05 2008-08-07 Sms Demag Ag Stranggießeinrichtung zum Erzeugen von Brammen aus Stahl
DE102008015008B4 (de) * 2008-03-19 2024-02-01 Sms Group Gmbh Verfahren zum Betreiben einer Strangführungseinrichtung
WO2009126893A1 (en) * 2008-04-11 2009-10-15 Eaton Corporation Hydraulic system including fixed displacement pump for driving multiple variable loads and method of operation
CN101886640A (zh) * 2010-07-02 2010-11-17 哈尔滨工程大学 手动可调式低压三通道液压驱动系统
KR101323292B1 (ko) * 2011-08-30 2013-10-30 주식회사 포스코 연주 주편 두께 조절 장치 및 두께 조절 방법
CN103047213A (zh) * 2013-01-11 2013-04-17 中国矿业大学 一种液压整流阀及控制方法
AT515260B1 (de) * 2013-12-17 2017-12-15 Primetals Technologies Austria GmbH Steuer- oder Regeleinrichtung für ein Stützrollengerüst einer Stranggießmaschine
CN105909572A (zh) * 2016-07-04 2016-08-31 中国重型机械研究院股份公司 带自锁定功能的快速响应液压位置闭环控制系统
CN107630852B (zh) * 2017-08-31 2019-04-05 宣化钢铁集团有限责任公司 一种采用插装式逻辑阀实现拉矫液压控制的方法

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CH563532A5 (uk) * 1973-03-14 1975-06-30 Buehler Ag Geb
US4416187A (en) * 1981-02-10 1983-11-22 Nystroem Per H G On-off valve fluid governed servosystem
DE3835010A1 (de) * 1988-10-14 1990-04-19 Rexroth Mannesmann Gmbh Vorrichtung zum abstuetzen und fuehren eines aus der kokille einer stranggussanlage austretenden stranges
JP3008821B2 (ja) * 1994-07-29 2000-02-14 住友金属工業株式会社 薄鋳片の連続鋳造方法および装置
AT404806B (de) * 1996-05-08 1999-03-25 Voest Alpine Ind Anlagen Strangführung für eine stranggiessanlage
DE19627336C1 (de) * 1996-06-28 1997-09-18 Mannesmann Ag Verfahren zum Führen eines Stranges und Strangführung
US5678470A (en) * 1996-07-19 1997-10-21 Caterpillar Inc. Tilt priority scheme for a control system
US5960695A (en) * 1997-04-25 1999-10-05 Caterpillar Inc. System and method for controlling an independent metering valve
US6131500A (en) * 1997-12-05 2000-10-17 Moncrief; Rick L. System and method for producing motion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007016045A1 (de) 2007-03-30 2008-10-02 Sms Demag Ag Vorrichtung zum hydraulischen Anstellen von Bauteilen

Also Published As

Publication number Publication date
CN1312741A (zh) 2001-09-12
JP2002522231A (ja) 2002-07-23
BR9912898A (pt) 2001-05-08
KR100593720B1 (ko) 2006-06-28
EP1105235A1 (de) 2001-06-13
CA2340351A1 (en) 2000-02-24
TR200100466T2 (tr) 2001-06-21
CA2340351C (en) 2007-04-24
ID28771A (id) 2001-06-28
WO2000009279A1 (de) 2000-02-24
DE19836843A1 (de) 2000-02-17
KR20010053636A (ko) 2001-06-25
UA73723C2 (en) 2005-09-15
ES2209494T3 (es) 2004-06-16
RU2226448C2 (ru) 2004-04-10
US6540010B1 (en) 2003-04-01
DE59907218D1 (de) 2003-11-06
TW418133B (en) 2001-01-11
ATE250997T1 (de) 2003-10-15
CN1329145C (zh) 2007-08-01

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