EP1567295A1 - Coquille de coulee continue destinee a la coulee de metaux liquides, notamment de materiaux d'acier, a des vitesses de coulee elevees, sous forme de barres de coulee polygonales en billette, en bloom ou en ebauche - Google Patents

Coquille de coulee continue destinee a la coulee de metaux liquides, notamment de materiaux d'acier, a des vitesses de coulee elevees, sous forme de barres de coulee polygonales en billette, en bloom ou en ebauche

Info

Publication number
EP1567295A1
EP1567295A1 EP03757896A EP03757896A EP1567295A1 EP 1567295 A1 EP1567295 A1 EP 1567295A1 EP 03757896 A EP03757896 A EP 03757896A EP 03757896 A EP03757896 A EP 03757896A EP 1567295 A1 EP1567295 A1 EP 1567295A1
Authority
EP
European Patent Office
Prior art keywords
mold
casting
cross
section
continuous casting
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
EP03757896A
Other languages
German (de)
English (en)
Inventor
Adolf Gustav Zajber
Dirk Letzel
Josef Kockentiedt
Uwe Plociennik
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 EP1567295A1 publication Critical patent/EP1567295A1/fr
Ceased legal-status Critical Current

Links

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
    • B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
    • 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 a continuous casting mold for casting liquid metals, in particular liquid steel materials, at high casting speeds, to polygonal billets, blooms, pre-profile casting strands and.
  • a continuous casting mold for casting liquid metals, in particular liquid steel materials, at high casting speeds, to polygonal billets, blooms, pre-profile casting strands and.
  • the input cross-section on the pouring side has a cross-sectional enlargement compared to the output cross-section on the strand exit side and corner radii.
  • a largely identical continuous casting mold is known from EP 0 498 296 B2. This is based on the task of achieving cooling of the strand crust, which can be measured over the entire circumference, within the tubular mold by deforming the strand cross section, in order to improve the strand quality on the one hand and to increase the casting speed on the other hand. Differences in the casting speed during operation without strand damage should also be permitted.
  • the known invention intends to solve this problem by enlarging the cross-section in the form of bulges which continuously decrease in size. At least three such bulges should be present in the round strands over the circumference.
  • Such a design is not limited to round strands, but cannot easily determine the cooling conditions of the casting strand, in particular the surface quality, the structure close to the edge and the throughput of a billet mold.
  • the object of the invention is to provide such a tubular mold made of copper with regard to all technological requirements that arise for the cooling processes at casting speeds of approx. 10 m / min to adjust.
  • the object is achieved according to the invention in that the inner geometric cross-sectional shape and the associated dimensions are designed analogously to the locally dissipative amount of the heat of solidification at a selected casting speed and analogously to the expansion of the tubular mold.
  • the tube mold is adapted in a process-optimized manner in that the heat of solidification is related to the mold height (length) in accordance with the (high) casting speed, both by the strand shrinkage behavior and by the mold expansion during the casting operation.
  • the strand shell is advantageously always without an air gap on the inner surface (hot side) of the mold. For example, the excessive amount of heat in the area of the mold level for the shrinking of the strand and the mold expansion are taken into account.
  • the tubular mold in its inner shape and dimensions are constructed from these values. The values can be used, for example, with mold heights of approx. 1000 - 1100 mm.
  • the outer shape and dimensions of the mold tube can be designed by designing the outer shape analogously to the mold thermal expansion, at least in individual height regions of the tubular mold.
  • the casting material itself is taken into account in that the tubular mold is shaped in its geometric cross-sectional shapes in relation to the respective steel grade. A pronounced shrinkage is detected, for example, in that the tubular mold has a section of greater conicity in the region of the casting level corresponding to the larger shrinkage of the casting strand.
  • the conicity of the tubular mold and its wall thickness result from the fact that below the section of greater conicity of the tubular mold, the wall volume is made variable in accordance with the amount of heat dissipated per unit of time.
  • the thermal expansion of the tubular mold can also be checked on its outer surface by increasing the outer surface of the tubular mold through incisions, ribs or the like in areas of reduced wall volume.
  • the behavior of the casting strand during shrinkage is additionally favorably influenced by the fact that starting at the entrance cross-section, a central, approximately parabolic-shaped recess is provided for each cross-sectional side.
  • the approximately parabolic recess decreases in the direction of the strand exit side.
  • An individual adjustment can be made to the respective broad and / or narrow side of the input cross section.
  • the length of the approximately parabolic recess extends approximately to half the mold height.
  • the shrinkage behavior of the casting strand can also be taken into account in that the length of the approximately parabolic recess is adapted to the shrinkage dimension at the level of the respective broad and / or narrow side of the mold cross section.
  • a plane-parallel surface is formed in the area of a corner radius, which is opposite to analog counter-surfaces in the inner cross-sectional shape.
  • FIG. 1 shows a cross section through a tubular mold with an attached diagram of the heat of solidification over the mold height
  • FIG. 2 shows the same cross section as FIG. 1, the
  • Fig. 3 shows the same cross section as Fig. 1, the
  • FIG. 3A is assigned as “section A-A” and FIG. 3B as “section B-B",
  • the continuous casting mold is shown in cross section and is used for casting liquid metals, in particular liquid steel material polygonal billet, billet, pre-profile casting strands 1 u.
  • the continuous casting mold consists of a tubular mold 2 made of copper or copper alloys.
  • the inlet cross section 3 on the pouring side 4 represents an enlarged cross section 5 compared to the outlet cross section 6 on the strand outlet side 7.
  • the pouring side 4 and the strand outlet side are continuous with a radius 8 (FIGS. 4A and 4B) provided in the transition.
  • a diagram “D” of the course of the removal of the heat of solidification from the casting strand 1 is drawn on the right-hand side above the mold height 11. This results in the strongly increasing temperature curve in the area of the casting surface.
  • the tubular mold 2 is now constructed in such a way that the inner geometric cross-sectional shape 9 and the associated dimensions 10 are analogous to the locally dissipative amount of the heat of solidification (cf. FIG. 1, right diagram “D”) at a selected (high) casting speed and analogously to the expansion the tube mold 2 is fixed, ie executed based on calculations and / or empirical values.
  • the outer shape 12 is reduced at least in individual height regions 12 of the tubular mold 2 analogously to the mold thermal expansion.
  • the values for the expansion or shrinkage of the cast metal can also be included in the geometric cross-sectional shape 9 depending on the presence of a certain steel grade.
  • the tubular mold 2 has a section 14 of great conicity in the area of the casting level 13 (FIG. 2) and immediately thereafter a section 15 of even greater conicity corresponding to the greatest shrinkage of the casting strand 1.
  • the wall volume 17 is Changed depending on the amount of heat dissipated per unit of time executed or reduced.
  • the outer surface 18 of the tubular mold 2 is enlarged by incisions, ribs 19 or the like (FIGS. 4A and 4B).
  • These incisions 19 are washed around by the cooling medium (water) on the outside and are in a conventional water box (not shown) surrounding the continuous casting mold.
  • the incisions, ribs 19 or the like increase the cooling surface.
  • the cuts, ribs 19 or the like are also visible in FIGS. 3 and 3B.
  • a central, approximately parabolic-shaped recess 20 is made for each cross-sectional side 3a, starting at the input cross-section 3.
  • the parabolic recess 20 decreases in depth and thus in its width downward in the direction of the strand exit side 7.
  • the length 20a of the parabolic recess 20 extends approximately to half the mold height 11.
  • the length 20a of the parabolic recess 20 is also adapted to the shrinkage of the height of the respective broad and / or narrow side 21 of the mold cross section 22 (FIG. 4A).
  • a plane-parallel surface 23 is formed to run downwards, which are opposite each other to analog counter surfaces 24 in the inner cross-sectional shape 9.

Abstract

L'invention concerne une coquille de coulée continue destinée à la coulée de métaux liquides, notamment de matériaux d'acier, à des vitesses de coulée élevées, sous forme de barres de coulée polygonales (1) en billette, en bloom ou en ébauche et similaires. Ladite coquille est composée d'une coquille tubulaire (2) en cuivre ou alliage de cuivre dont la section transversale d'entrée (3), côté entrée de coulée (4), présente une augmentation de section (5) par rapport à la section transversale de sortie (6), côté sortie de barre (7), ainsi que des coins arrondis (8). L'invention vise à améliorer technologiquement ladite coquille de coulée en matière de processus de refroidissement. A cet effet, la forme géométrique (9) de la section transversale et les dimensions correspondantes (10) sont choisies en fonction de la capacité locale de dissipation de la chaleur de solidification pour une vitesse de coulée définie, et de la dilatation de la coquille tubulaire (2).
EP03757896A 2002-11-13 2003-10-01 Coquille de coulee continue destinee a la coulee de metaux liquides, notamment de materiaux d'acier, a des vitesses de coulee elevees, sous forme de barres de coulee polygonales en billette, en bloom ou en ebauche Ceased EP1567295A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10252723 2002-11-13
DE10252723 2002-11-13
PCT/EP2003/010861 WO2004043628A1 (fr) 2002-11-13 2003-10-01 Coquille de coulee continue destinee a la coulee de metaux liquides, notamment de materiaux d'acier, a des vitesses de coulee elevees, sous forme de barres de coulee polygonales en billette, en bloom ou en ebauche

Publications (1)

Publication Number Publication Date
EP1567295A1 true EP1567295A1 (fr) 2005-08-31

Family

ID=32239996

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03757896A Ceased EP1567295A1 (fr) 2002-11-13 2003-10-01 Coquille de coulee continue destinee a la coulee de metaux liquides, notamment de materiaux d'acier, a des vitesses de coulee elevees, sous forme de barres de coulee polygonales en billette, en bloom ou en ebauche

Country Status (11)

Country Link
EP (1) EP1567295A1 (fr)
KR (1) KR101060114B1 (fr)
CN (1) CN1325196C (fr)
AU (1) AU2003273929A1 (fr)
BR (1) BR0316249B1 (fr)
CA (1) CA2506078C (fr)
DE (1) DE10351348A1 (fr)
PL (1) PL375369A1 (fr)
RU (1) RU2320453C2 (fr)
UA (1) UA79025C2 (fr)
WO (1) WO2004043628A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2515862A1 (fr) 2003-02-14 2004-09-02 Depuy Spine, Inc. Dispositif et procede de fusion intervertebrale forme in-situ
DE102005039994A1 (de) * 2005-08-24 2007-03-08 Sms Demag Ag Kokille für eine Stranggießanlage
EP2292350A1 (fr) * 2009-08-04 2011-03-09 Siemens VAI Metals Technologies S.r.l. Moule pour le moulage en continu de produits longs ou plats, gaine de refroidissement conçue pour coopérer avec un tel moule et ensemble comprenant un tel moule et une telle gaine de refroidissement
ITUD20110211A1 (it) * 2011-12-23 2013-06-24 Danieli Off Mecc Cristallizzatore per colata continua
CN113333691B (zh) * 2021-05-25 2023-01-31 上海交通大学 一种用于大高径比高温合金铸锭的铸模及应用
KR20230083055A (ko) 2021-12-02 2023-06-09 주식회사 포스코 주형의 제조 방법 및 주형

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1554717A (en) * 1975-06-16 1979-10-24 Shrum L R Moulds for the continuous casting of steel
US4207941A (en) * 1975-06-16 1980-06-17 Shrum Lorne R Method of continuous casting of metal in a tapered mold and mold per se
US5409053A (en) * 1991-02-06 1995-04-25 Concast Standard Ag Continuous casting mold
DE59200159D1 (de) * 1991-02-06 1994-06-23 Concast Standard Ag Kokille zum Stranggiessen von Metallen, insbesondere von Stahl.
CN2288799Y (zh) * 1996-12-11 1998-08-26 刘治 小方坯连铸机结晶器
JP4164163B2 (ja) * 1998-07-31 2008-10-08 株式会社神戸製鋼所 金属の連続鋳造用鋳型
US6374903B1 (en) * 2000-09-11 2002-04-23 Ag Industries, Inc. System and process for optimizing cooling in continuous casting mold

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004043628A1 *

Also Published As

Publication number Publication date
UA79025C2 (uk) 2007-05-10
RU2005118100A (ru) 2006-01-20
CA2506078C (fr) 2012-05-15
RU2320453C2 (ru) 2008-03-27
CA2506078A1 (fr) 2004-05-27
BR0316249B1 (pt) 2011-10-04
PL375369A1 (en) 2005-11-28
DE10351348A1 (de) 2004-06-03
CN1325196C (zh) 2007-07-11
KR101060114B1 (ko) 2011-08-29
BR0316249A (pt) 2005-10-04
CN1711144A (zh) 2005-12-21
AU2003273929A1 (en) 2004-06-03
KR20050071681A (ko) 2005-07-07
WO2004043628A1 (fr) 2004-05-27

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