EP1025930A1 - Plaque de moule pour moule à région d'entrée en forme d'entonnoir pour la coulée continue de métal - Google Patents

Plaque de moule pour moule à région d'entrée en forme d'entonnoir pour la coulée continue de métal Download PDF

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Publication number
EP1025930A1
EP1025930A1 EP00100948A EP00100948A EP1025930A1 EP 1025930 A1 EP1025930 A1 EP 1025930A1 EP 00100948 A EP00100948 A EP 00100948A EP 00100948 A EP00100948 A EP 00100948A EP 1025930 A1 EP1025930 A1 EP 1025930A1
Authority
EP
European Patent Office
Prior art keywords
plate
slots
mold
cooling medium
mold according
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.)
Withdrawn
Application number
EP00100948A
Other languages
German (de)
English (en)
Inventor
Jürgen Dr. Sucker
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 Demag 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 Demag AG filed Critical SMS Demag AG
Publication of EP1025930A1 publication Critical patent/EP1025930A1/fr
Withdrawn legal-status Critical Current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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/059—Mould materials or platings
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/0408—Moulds for casting thin slabs
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/055—Cooling the moulds

Definitions

  • the invention relates to the configuration of a mold plate for a mold Continuous casting of metal with a funnel shape in the casting direction to the format of the cast strand tapered pouring area and a slotted Back wall in which a liquid cooling medium flows.
  • the job of the mold is to shape the strand and the melt to do it for that Extract the required heat from shell growth.
  • the Shell should be so thick that it can withstand thermal and mechanical loads can withstand and the strand certainly does not tear.
  • the heat is dissipated in the mold from the steel to the cooling water, which is in drilled channels or slits flowing into the back wall of the plates are milled and rectangular channels with the surface of the water tank form.
  • the cooling channels or slots run in accordance with the prior art vertical, i.e. in the casting direction in order to dissipate heat as evenly as possible to achieve across the plate width.
  • the arrangement of the holes or slots and the determination of their dimensions is done so that over the plate surface heat dissipation is as uniform as possible.
  • the arrangement of the threads is also important or thread inserts for the screws with which the plate on Water box is attached.
  • the number of attachment points must be sufficient be large, so that the plate due to the thermal load during the Casting process is not deformed to a tolerable degree.
  • Drilled panels are comparatively expensive to manufacture and therefore become preferred only where there is little deformation of the mold cavity arrives, such as when continuously casting blooms.
  • the lifespan of a mold plate essentially depends on the frequency Location and depth of the damage mentioned and the number of possible Reworking, each with a shift from the work surface mechanically is removed.
  • the idea of the funnel-shaped pouring area can be traced back to the effort shedding as thin a strand as possible, which after leaving the casting machine cut into slabs and the rolling process directly through an oven can be supplied.
  • the dimensions of the pouring area are essentially determined by the Cross section of the strand to be cast, the dimensions of the pouring tube and determines its immersion depth in the melt.
  • the mechanism of the formation of these additional strains can be understood on the basis of the half cross section of the upper region of a drilled mold plate 1, which is shown schematically in FIG. 1.
  • the mold plate is fastened to the water tank 2 with the retaining screws S 1 , S 2 , S 3 , S 4 , S 5 and S 6 .
  • the width of the strand is determined by the position of the narrow side 3.
  • the position of the cooling holes is determined by the working thickness d 1 , ie the distance to the working surface, and the distance d 2 to the rear wall.
  • the heating of the mold plate 1 by the heat flow q ⁇ leads to a change in length in the direction of the narrow sides 3 due to the expansion of the panel material, which is not hindered in the case of a flat work surface and consequently no additional stresses or strains are caused in the plate.
  • the working surface of the tarpaulin is additionally compressed because this area is attached to the plate due to the fastening of the plate with the retaining screws S 1 , S 2 , S 3 , S 4 , S 5 and S 6 Fixing points with the position X 1 , X 2 , X 3 , X 4 , X 5 and X 6 cannot expand freely.
  • the opposite length change takes place due to the shrinkage, and the previously compressed area of the work surface is additionally stretched.
  • the distribution of this additional alternating elongation over the plate width is largely determined by the contour of the curved area, which in the present case is predetermined by the radii R 1 and R 2 and the funnel opening T, the position X 1 X 2 , X 3 , X 4 , X 5 and X 6 of the retaining screws S 1 , S 2 , S 3 , S 4 , S 5 and S 6 in relation to the course of this contour and the elastic compliance of the retaining screws S 1 , S 2 , S 3 , S 4 , S 5 and S 6 determined.
  • the intensity of this additional alternating expansion also determines the following parameters: the working thickness d 1 between the working surface and the cooling holes, the plate thickness d 2 between the cooling channels and the rear, and the width B of the domed area.
  • the increase leads the plate rigidity by increasing the plate thickness between the rear wall and cooling channels at one and the same thermal load to one more even distribution of stresses and strains across the plate width.
  • the expansion of the mold plate in the horizontal direction, which is the origin favored by cracks on the work surface is reduced because itself the plate behind the cooling holes compared to the area between the work surface and the cooling holes are not heated as much and the over the The mold cross-section average temperature is lower overall.
  • a drilled plate with a sufficiently large thickness d 2 between the cooling bores and the rear which is fastened to the water tank with a required large number of retaining screws S 1 , S 2 , S 3 , ---, S n, fulfills the design requirements Requirements in which the work surface remains free of cracks up to a certain thermal load q ⁇ max and, when this thermal load is exceeded, shows cracks evenly distributed over the width of the board.
  • the invention has for its object to provide a further embodiment of a mold plate of a mold with a funnel-shaped pouring area, which has water-cooled slots on the back and remains crack-free on the work surface up to a certain thermal load q ⁇ max and evenly above this thermal load the plate width has distributed cracks, so that a service life comparable to mold plates with flat walls is achieved.
  • the invention is based on the knowledge that to avoid cracking on the work surface with a given working thickness the cross section of the Mold plate must be as large as possible because of the greater rigidity associated with it and less horizontal expansion of the plate to a more uniform Distribution of stresses and strains across the width of this plate leads.
  • the object is achieved with the invention in that at least the slots on a height section of the curved area of the mold plate the back, in which the cooling water flows, so that their inclination in their course does not deviate from the horizontal by more than 30 degrees.
  • Figure 1 shows the drilled mold plate described previously on page 4 and following 1.
  • a mold plate 4 has a continuous casting mold 2 has a funnel-shaped pouring area at the upper edge of the mold 6 beginning arched pouring area 5 to the narrow sides 3 and is reduced in the casting direction to the format of the cast strand.
  • the slots 7 run in at least one height section of the mold plate 4 on the back, in which the cooling water flows, so that it is in its course not deviate from the horizontal by more than 30 degrees.
  • a preferred embodiment provides that the slots across the plate width run continuously horizontally, as shown in Fig. 2.
  • the depth and / or the width of the slots 7 and the distance between them can about the height and / or the width of the mold plate both variable and be immutable.
  • Another embodiment provides that to increase the flow rate and to reduce the cooling water throughput filler 9 from a any material are inserted into the slots 7.
  • the filler pieces 9 can be suitably along the slots 7 with the webs, which delimit these slots are connected to the rigidity of the Increase plate cross-section additionally. This can provide the necessary rigidity of the mold cross section required thickness of the plate, and the dimensions of the mold can be reduced accordingly. Another benefit is the reduction in material costs when you look at the comparative high price of the mold material, which is usually is a copper alloy, the filler, which is made of steel can be faced.
  • the cooling medium on one side of the mold plate fed and discharged at the other. It is advantageous that Supply cooling medium on both sides and discharge in the middle or in the Feed in the middle and discharge on both sides. Because in this case the Rise in the temperature of the cooling medium as it flows through the cooling slots is halved, the unevenness of the heat transfer decreases accordingly across the plate width.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP00100948A 1999-02-01 2000-01-19 Plaque de moule pour moule à région d'entrée en forme d'entonnoir pour la coulée continue de métal Withdrawn EP1025930A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999103929 DE19903929A1 (de) 1999-02-01 1999-02-01 Kokillenplatte einer Kokille mit trichterförmigem Eingießbereich zum Stranggießen von Metall
DE19903929 1999-02-01

Publications (1)

Publication Number Publication Date
EP1025930A1 true EP1025930A1 (fr) 2000-08-09

Family

ID=7896036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00100948A Withdrawn EP1025930A1 (fr) 1999-02-01 2000-01-19 Plaque de moule pour moule à région d'entrée en forme d'entonnoir pour la coulée continue de métal

Country Status (5)

Country Link
EP (1) EP1025930A1 (fr)
JP (1) JP2000218345A (fr)
CA (1) CA2296619A1 (fr)
DE (1) DE19903929A1 (fr)
MX (1) MXPA00001023A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003106073A3 (fr) * 2002-06-13 2004-04-08 Sms Demag Ag Coquille pour la coulee continue de metaux liquides, en particulier d'acier liquide

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100490985B1 (ko) * 2000-11-25 2005-05-24 주식회사 포스코 연속주조용 깔대기형 주형동판
DE102005040634A1 (de) 2005-08-27 2007-03-01 Sms Demag Ag Kokillenbreitseite einer Trichterkokille
DE102006037728A1 (de) * 2006-08-11 2008-02-14 Sms Demag Ag Kokille zum Stranggießen von flüssigem Metall, insbesondere von Stahlwerkstoffen
DE102007002804A1 (de) 2007-01-18 2008-07-24 Sms Demag Ag Kokillenwand einer Kokille zum Gießen einer Metallschmelze
WO2011093563A1 (fr) * 2010-01-29 2011-08-04 주식회사 풍산 Plaque de lingotière de coulée, ensemble de plaque de lingotière de coulée, et moule de coulée comportant un tel ensemble
BE1026975B1 (fr) * 2019-06-21 2020-08-12 Ebds Eng Sprl Lingotière de coulée continue de métaux, système de mesure de la température et système et procédé de détection de percée dans une installation de coulée continue de métaux
DE102023201700A1 (de) * 2023-02-24 2024-08-29 Sms Group Gmbh Breitseiten-Kokillenplatte einer Kokille zum Stranggiessen von Metall

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB954719A (en) * 1962-04-02 1964-04-08 Continuous Casting Company Ltd Improvements in the construction of continuous casting moulds
GB1082988A (en) * 1964-12-22 1967-09-13 British Iron Steel Research Moulds
US3685571A (en) * 1970-02-16 1972-08-22 Ural Z Tyazhclogo Mashinostroe Cooling system for continuous casting mold
JPS4828257A (fr) * 1971-08-18 1973-04-14
WO1998041342A1 (fr) * 1997-03-19 1998-09-24 Ag Industries, Inc. Moule et procede ameliores de moulage continu

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB954719A (en) * 1962-04-02 1964-04-08 Continuous Casting Company Ltd Improvements in the construction of continuous casting moulds
GB1082988A (en) * 1964-12-22 1967-09-13 British Iron Steel Research Moulds
US3685571A (en) * 1970-02-16 1972-08-22 Ural Z Tyazhclogo Mashinostroe Cooling system for continuous casting mold
JPS4828257A (fr) * 1971-08-18 1973-04-14
WO1998041342A1 (fr) * 1997-03-19 1998-09-24 Ag Industries, Inc. Moule et procede ameliores de moulage continu

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; AN 1973-52178U, XP002136221 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003106073A3 (fr) * 2002-06-13 2004-04-08 Sms Demag Ag Coquille pour la coulee continue de metaux liquides, en particulier d'acier liquide
US7363958B2 (en) 2002-06-13 2008-04-29 Sms Demag Ag Continuous casting mold for liquid metals, especially for liquid steel

Also Published As

Publication number Publication date
CA2296619A1 (fr) 2000-08-01
DE19903929A1 (de) 2000-08-03
JP2000218345A (ja) 2000-08-08
MXPA00001023A (es) 2002-11-04

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