EP0028766B1 - Verfahren und Vorrichtung zum Verändern der Abmessungen eines Stranges beim Stranggiessen - Google Patents

Verfahren und Vorrichtung zum Verändern der Abmessungen eines Stranges beim Stranggiessen Download PDF

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Publication number
EP0028766B1
EP0028766B1 EP80106617A EP80106617A EP0028766B1 EP 0028766 B1 EP0028766 B1 EP 0028766B1 EP 80106617 A EP80106617 A EP 80106617A EP 80106617 A EP80106617 A EP 80106617A EP 0028766 B1 EP0028766 B1 EP 0028766B1
Authority
EP
European Patent Office
Prior art keywords
movement
during
strand
displacement
rotational movement
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
Application number
EP80106617A
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German (de)
English (en)
French (fr)
Other versions
EP0028766A1 (de
Inventor
Hans Gloor
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 Concast AG
Original Assignee
Concast Holding 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 Concast Holding AG filed Critical Concast Holding AG
Priority to AT80106617T priority Critical patent/ATE3103T1/de
Publication of EP0028766A1 publication Critical patent/EP0028766A1/de
Application granted granted Critical
Publication of EP0028766B1 publication Critical patent/EP0028766B1/de
Expired legal-status Critical Current

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    • 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
    • B22D11/168—Controlling or regulating processes or operations for adjusting the mould size or mould taper

Definitions

  • the invention relates to a method for changing the dimensions of a strand during continuous casting while a casting is in progress, wherein at least one movable mold wall is moved by means of two movement devices arranged one behind the other in the longitudinal axis running direction about a pivot axis running transversely to the longitudinal axis and parallel to the mold wall and displaced transversely to the longitudinal axis axis and one Device for performing the method.
  • JP-A-50 152 9266 a method for reducing the width of a slab strand during a casting operation.
  • the three steps mentioned - pivoting, parallel displacement, pivoting back of the narrow side - are also used in this method.
  • the invention is therefore based on the object of providing a method and a device which overcome the disadvantages mentioned, enable shorter adjustment times and short transition pieces and produce larger format differences without increasing the risk of breakthrough. Furthermore, the mold wear caused by friction of the strand crust on the mold wall should be kept small.
  • this object is achieved in that the mutual ratio of the displacement speeds of the two movement devices changes and the position of the pivot axis is shifted parallel to its starting position at least during a period of the pivoting movement of the mold wall.
  • each of the two movement devices is provided with a controller for setting the displacement speed and that this controller is connected to a programmable computer.
  • the invention recommends that the movement device closer to the mold injection side is moved at a linearly decreasing speed during the swiveling movement from the start of swiveling backwards, while the movement device closer to the mold exit side at the beginning of the swing back movement initially at a constant speed during a first section of the swing back time and during a second section of the swing back time is moved at a linearly decreasing speed.
  • Additional improvements with regard to reducing the air gap and / or reducing the deformation of the strand crust can be achieved if at least the displacement speed of a movement device is changed during the pivoting movement according to a higher-order transition curve.
  • discontinuously change the displacement speed of at least one movement device during the pivoting movement can also be advantageous to discontinuously change the displacement speed of at least one movement device during the pivoting movement.
  • the discontinuous change in displacement speed for example, can be coupled with mold oscillation or with other casting parameters, such as pulling force of the strand, friction between strand and mold, heat transfer between the strand and the moving mold wall, adjusting force measured on the drive of the movement device, etc.
  • the invention recommends a simultaneous expiry of the sales. pivoting movement with a movement of the mold wall directed approximately transversely to the longitudinal axis of the strand. During the entire displacement movement, the mold wall can also perform pivoting movements transversely to the longitudinal axis of the mold during the known phase of parallel displacement of the mold wall, the position of the pivot axis being continuously shifted.
  • At least one of the movable mold walls is pivoted in the form of spindles by means of two movement devices provided one behind the other in the strand running direction. In most cases, two mold walls are adjusted at the same time.
  • the pivoting speed 5 of the spindle closer to the mold exit side is smaller than the pivoting speed 6 of the spindle closer to the mold injection side.
  • the swivel axis is often placed on the exit-side edge of the mold wall.
  • the second method step is shown between 1 and 2, which is characterized by a parallel displacement of the mold wall.
  • the two spindles have the same adjustment speed.
  • the casting cone correction adapted to the strand width change can also be superimposed.
  • the third process step which involves swiveling back, takes place in the period between 2 and 3.
  • the spindle closer to the mold exit side moves at a constant speed 7 during the pivoting-back movement, while the other spindle moves at a linearly decreasing speed 8 during this period.
  • the mutual ratio of the displacement speeds of the two spindles changes during the entire period of the pivoting-back movement of the mold wall. Furthermore, the position of the pivot axis is continuously shifted throughout the entire period.
  • FIG. 2 Another swing-back characteristic is shown in FIG. 2 in a further speed-time diagram.
  • the movement sequences in the first and second time period are unchanged compared to FIG. 1.
  • the two spindles move at different linearly decreasing speeds according to lines 12 and 13 during the swiveling back movement 3 moved at a steadily decreasing speed 12.
  • a swiveling speed 14 is shown during the swiveling back movement according to a curve 14 of a higher order.
  • the ratio of the air gap to the deformation of the strand crust can be changed and optimized according to the casting parameters.
  • transition curves 21 and 22 for the speed increase are also shown in the first period during the pivoting movement. shown.
  • the movement device closer to the mold pouring side is moved at a linearly decreasing speed along the line 23 during the return swing from the beginning of the return swing, while the other movement device at the beginning of the return swing initially at a constant speed 24 during a first part of the return swing time and during a second part of the swing back time is moved at a linearly decreasing speed 25.
  • the displacement speed can also change discontinuously, for example in a step-like manner, during the movement of the mold wall.
  • two moving devices 32, 33 for changing the format are articulated on an adjustable transverse wall 30 of a plate mold arranged between two longitudinal walls 34.
  • These movement devices 32, 33 are designed as spindles, the movement device 32 representing the movement device closer to the mold injection side and 33 the movement device closer to the mold exit side.
  • the movement devices 32, 33 are provided with drives 36, 37, which in turn are provided with controls 38, 39 for adjusting the displacement speed.
  • the predetermined displacement speeds of the two independently driven movement devices are controlled by a programmable computer 40.
  • the computer 40 can be provided with a control device 41 which, as a guide variable for the computer program, has at least one casting parameter input, such as the friction value 42 between the strand and the mold, cooling capacity 43 of the moving mold wall, adjusting force 44 measured on the drive of the movement devices and / or gap size 45 between moving mold wall and strand, evaluates.
  • a control device 41 which, as a guide variable for the computer program, has at least one casting parameter input, such as the friction value 42 between the strand and the mold, cooling capacity 43 of the moving mold wall, adjusting force 44 measured on the drive of the movement devices and / or gap size 45 between moving mold wall and strand, evaluates.
  • the spindles 32, 33 other movement devices, such as path-controlled hydraulic cylinders etc., can also be used.
  • the movable mold wall is moved about a pivot axis running transversely to the longitudinal axis of the strand and parallel to the mold wall.
  • the position of the fictitious pivot axis 50 is shifted parallel to its starting position at least during a period of the pivoting back movement.
  • Pivotal axes 50 are conceivable which coincide with the boundary surface of the mold cavity of the movable mold wall or which lie outside the mold wall.
  • the process for changing the dimensions of a strand includes both enlarging and reducing the size of the strand.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Document Processing Apparatus (AREA)
  • Machine Translation (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP80106617A 1979-11-02 1980-10-29 Verfahren und Vorrichtung zum Verändern der Abmessungen eines Stranges beim Stranggiessen Expired EP0028766B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80106617T ATE3103T1 (de) 1979-11-02 1980-10-29 Verfahren und vorrichtung zum veraendern der abmessungen eines stranges beim stranggiessen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH9836/79 1979-11-02
CH983679A CH643763A5 (de) 1979-11-02 1979-11-02 Verfahren und vorrichtung zum veraendern von querschnittsabmessungen eines stranges beim stranggiessen.

Publications (2)

Publication Number Publication Date
EP0028766A1 EP0028766A1 (de) 1981-05-20
EP0028766B1 true EP0028766B1 (de) 1983-04-20

Family

ID=4356173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106617A Expired EP0028766B1 (de) 1979-11-02 1980-10-29 Verfahren und Vorrichtung zum Verändern der Abmessungen eines Stranges beim Stranggiessen

Country Status (11)

Country Link
US (1) US4356862A (enrdf_load_stackoverflow)
EP (1) EP0028766B1 (enrdf_load_stackoverflow)
JP (1) JPS5674354A (enrdf_load_stackoverflow)
AT (1) ATE3103T1 (enrdf_load_stackoverflow)
BR (1) BR8006995A (enrdf_load_stackoverflow)
CA (1) CA1158831A (enrdf_load_stackoverflow)
CH (1) CH643763A5 (enrdf_load_stackoverflow)
DE (1) DE3062844D1 (enrdf_load_stackoverflow)
ES (1) ES496908A0 (enrdf_load_stackoverflow)
MX (1) MX154223A (enrdf_load_stackoverflow)
ZA (1) ZA806725B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT405147B (de) * 1992-07-08 1999-05-25 Voest Alpine Ind Anlagen Verfahren zum vergrössern der breite eines gussstranges während des kontinuierlichen stranggiessens

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH658009A5 (de) * 1982-02-12 1986-10-15 Concast Service Union Ag Verfahren und plattenkokille zum kuehlen und stuetzen eines stranges in einer plattenkokille einer stahlstranggiessanlage.
DE3222836C1 (de) * 1982-03-03 1991-03-07 Benteler-Werke AG, 4790 Paderborn Verstellbare Stranggiesskokille fuer Stranggiessanlagen
JPS5973155A (ja) * 1982-10-20 1984-04-25 Nippon Steel Corp 連続鋳造における鋳片幅急速変更方法
FR2548059A1 (fr) * 1983-06-28 1985-01-04 Fives Cail Babcock Procede pour augmenter la largeur d'une brame de coulee continue sans interrompre la coulee
JPS6012256A (ja) * 1983-07-01 1985-01-22 Nippon Steel Corp 幅可変連続鋳造方法
AU551521B2 (en) * 1983-08-11 1986-05-01 Nippon Steel Corporation Method for reducing or widening mould width during continuous casting
JPS6068137A (ja) * 1983-08-30 1985-04-18 Nippon Steel Corp 鋼の幅可変連続鋳造法
FR2552692B1 (fr) * 1983-10-04 1985-11-08 Fives Cail Babcock Procede pour modifier la largeur d'une brame de coulee continue sans interrompre la coulee
FR2555079B1 (fr) * 1983-11-23 1986-03-28 Fives Cail Babcock Procede pour modifier la largeur d'une brame produite en coulee continue sans interrompre la coulee
AU554019B2 (en) * 1984-11-09 1986-08-07 Nippon Steel Corporation Changing slab width in continuous casting
DE3501716C2 (de) * 1985-01-19 1987-05-14 Mannesmann AG, 4000 Düsseldorf Verfahren und Einrichtung zum Verstellen der Schmalseitenplatten einer Stranggießkokille beim Stranggießen von Metallen, insbesondere von Stahl
US6857464B2 (en) 2002-09-19 2005-02-22 Hatch Associates Ltd. Adjustable casting mold

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2743025A1 (de) * 1976-09-27 1978-03-30 Kawasaki Steel Co Verfahren zum erweitern der strangbreite eines stahlstranges beim stranggiessen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH552423A (de) * 1972-04-18 1974-08-15 Concast Ag Verfahren und vorrichtung zum steuern des waermeentzuges in kokillen beim stranggiessen.
JPS5216449B2 (enrdf_load_stackoverflow) * 1972-08-14 1977-05-10
CH558687A (de) * 1973-03-30 1975-02-14 Concast Ag Verfahren zum steuern der kuehlleistung von schmalseitenwaenden bei plattenkokillen beim stranggiessen und plattenkokille zur durchfuehrung des verfahrens.
JPS50152926A (enrdf_load_stackoverflow) * 1974-05-31 1975-12-09
JPS5154837A (en) * 1974-11-08 1976-05-14 Nippon Steel Corp Renzokuchuzochunochuhenhabakakudaihoho
US4076883A (en) * 1975-07-30 1978-02-28 Metco, Inc. Flame-sprayable flexible wires
JPS5340631A (en) * 1976-09-27 1978-04-13 Kawasaki Steel Co Method of changing width of casting in continuous casting
CH602223A5 (enrdf_load_stackoverflow) * 1976-12-30 1978-07-31 Concast Ag
AT374710B (de) * 1978-06-14 1984-05-25 Voest Alpine Ag Plattenkokille zum aendern des strangquerschnittsformates beim kontinuierlichen stranggiessen
AT374127B (de) * 1978-06-14 1984-03-26 Voest Alpine Ag Plattenkokille zum aendern des strangquerschnitts- formates

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2743025A1 (de) * 1976-09-27 1978-03-30 Kawasaki Steel Co Verfahren zum erweitern der strangbreite eines stahlstranges beim stranggiessen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT405147B (de) * 1992-07-08 1999-05-25 Voest Alpine Ind Anlagen Verfahren zum vergrössern der breite eines gussstranges während des kontinuierlichen stranggiessens

Also Published As

Publication number Publication date
BR8006995A (pt) 1981-05-05
ATE3103T1 (de) 1983-05-15
ES8201862A1 (es) 1982-01-01
CH643763A5 (de) 1984-06-29
ZA806725B (en) 1981-10-28
ES496908A0 (es) 1982-01-01
CA1158831A (en) 1983-12-20
DE3062844D1 (en) 1983-05-26
JPS6229139B2 (enrdf_load_stackoverflow) 1987-06-24
MX154223A (es) 1987-06-19
US4356862A (en) 1982-11-02
JPS5674354A (en) 1981-06-19
EP0028766A1 (de) 1981-05-20

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