EP0498296B2 - Kokille zum Stranggiessen von Metallen, insbesondere von Stahl - Google Patents

Kokille zum Stranggiessen von Metallen, insbesondere von Stahl Download PDF

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Publication number
EP0498296B2
EP0498296B2 EP92101506A EP92101506A EP0498296B2 EP 0498296 B2 EP0498296 B2 EP 0498296B2 EP 92101506 A EP92101506 A EP 92101506A EP 92101506 A EP92101506 A EP 92101506A EP 0498296 B2 EP0498296 B2 EP 0498296B2
Authority
EP
European Patent Office
Prior art keywords
mould
cross
mould cavity
section
strand
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 - Lifetime
Application number
EP92101506A
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German (de)
English (en)
French (fr)
Other versions
EP0498296A3 (en
EP0498296A2 (de
EP0498296B1 (de
Inventor
Franciszek Kawa
Adrian Stilli
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.)
Concast Standard AG
Original Assignee
Concast Standard 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
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Application filed by Concast Standard AG filed Critical Concast Standard AG
Publication of EP0498296A2 publication Critical patent/EP0498296A2/de
Publication of EP0498296A3 publication Critical patent/EP0498296A3/de
Application granted granted Critical
Publication of EP0498296B1 publication Critical patent/EP0498296B1/de
Publication of EP0498296B2 publication Critical patent/EP0498296B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Definitions

  • the invention relates to a mold for the continuous casting of metals, preferably of steel, according to the preamble of claim 1 or claim 2nd
  • a mold for the continuous casting of is known from US Pat. No. 4,207,941 Steel strands with polygonal, especially with square Cross sections, known.
  • the cross section of the open on both sides The mold cavity is a square with corner fillets on the pouring side and an irregular one on the strand exit side Twelve corner. In the corner areas, the corner fillet becomes The pouring cone is continuously enlarged in the direction of the strand, and it is in the area of the fillet over a partial length of the mold twice as large as in the central area of the mold wall. At the Pouring with such molds can jam the strand occur within the mold leading to strand breaks and Lead breakthroughs. Also, instead of a square Cast a dodecagon. In particular, it is difficult to use such molds for different casting speeds during one dimensioning the current casting, as in long sequence castings with many pan changes are inevitable.
  • DE-A-3 907 351 discloses a mold with a pouring funnel for a Thin slab described.
  • the two broad sides are on the Pouring side of the mold with bulges that run along a partial height of the mold are continuously reshaped.
  • On the The strand exit side of the mold is the cross section of the mold cavity rectangular and to the desired thin slab cross section aligned.
  • the sole purpose of the two opposite Bulges is the space required to create for a dip tube. Are on the two narrow sides no bulges and no deformation of the strand shell provided by the mold walls.
  • the narrow sides of these Thin slab mold run, in contrast to the two broad sides, the narrow side walls diverging in the direction of the strand.
  • These narrow sides diverging in the direction of the strand are for Solving the task set there, particularly thin strands using one to under the Pouring pouring pipe reaching the pouring level, necessary to bruises and Prevent wrinkles on the broad sides.
  • the invention has for its object the disadvantages mentioned to overcome.
  • deforming the strand cross section within the mold one that can be measured over the entire circumference Cooling of the strand crust can be achieved on the one hand to improve the strand quality and on the other hand the casting speed to increase.
  • there should also be differences in casting speed during a running cast without the above Disadvantages such as strand break and breakthrough are made possible.
  • each mold represents curved lines, compared to classic tubular molds a higher dimensional stability of the mold tube, in particular in the highly heat-exposed bathroom mirror area. This higher dimensional stability improves with tube and other molds on the one hand, the dimensional accuracy of the mold cavity during the Tool life and on the other hand the strand quality.
  • the bulge is usually along the pouring side of the mold cavity over a partial length or over the entire length the mold diminished.
  • At the mold exit for example there is still a curved line in each circumferential section.
  • Cross section of the mold cavity on the mold exit side is additionally proposed to be provided in a straight line on all sides between corners.
  • the mold can also be round or a preliminary profile, e.g. the Form of a double-T beam.
  • the difference between the arc length at the level of the bath level and at the mold exit or tendon length determined at the mold exit and with the shrinkage of the Strand crust compared to the strand running direction compared.
  • the said Difference can be due to the size of the bulge or the arch height be chosen so that they essentially with the shrinkage mentioned is in agreement.
  • According to an embodiment can measure the light between opposite circumferential sections of the mold cavity on the pouring side, in the area measured at the largest bulge, about 5-15%, preferably at least 5% or 8%, greater than the light dimension between opposite ones Circumferential sections on the strand exit side to get voted.
  • the measure of the arc height can be degressive or in the pouring direction possibly shorten progressively and head towards zero.
  • the measure of the arc height can be in Advantageously, continuously decrease the cross-section of the following cross-sections.
  • the change in the bow height in the direction of the strand can according to a further embodiment also as a degree of taper be determined.
  • the shape and the size of the bulge are in all sections the same. Change the conicity of the bulge along the circumferential section in size.
  • An embodiment can at the two ends of each peripheral section a taper between 0 and 1% / m and in the middle the circumferential section is provided between 10 and 35% / m become.
  • Another variation is the choice of length or Partial length of the mold cavity with bulges. It is fundamental possible that the arc height of the bulge over the total mold cavity length reduced. But they are also only partial lengths conceivable. An advantageous embodiment sees one Partial length of at least 50% of the mold length. With today The usual molds of 800 mm in length are at least part of the length 400 mm.
  • the Diagonal measured taper on the partial length with bulges in an order of magnitude between 0 - 1% / m, or between 0 - 0.5% / m to be provided.
  • polygonal Strand cross-sections rounded the corners of the mold cavity. It has proven to be particularly advantageous when the corners of the Mold cavity fillet with a radius of 3 - 8% of the side length of the cross section.
  • peripheral sections with bulges can be of circular lines, Curves or be bounded by compound straight lines.
  • FIG. 1 and 2 is a mold 3 for the continuous casting of polygonal Strand cross sections, in the present example of square ones Strand cross sections, shown.
  • An arrow 4 points to one Pouring side and an arrow 5 on a strand exit side the mold 3.
  • the cross sections of a mold cavity 6 have different geometrical geometries on the entry and exit side Forms on.
  • the cross section is of the mold cavity 6 on the pouring side 4 between the Corners 8 - 8 '' 'with cross-sectional enlargements compared to the Strand exit side provided in the form of bulges 9.
  • An arc height 10 which represents the extent of the bulge, takes in the strand running direction 11 on a partial length 12 of the mold cavity 6 steadily.
  • the mold cavity cross sections in the levels 14 and 15 delimit a mold part 13 with a square cross section with fillets 16, as known in the art.
  • a circumferential line 17 shows the mold cavity cross section in FIG Level 14 and a circumferential line 18 the mold cavity cross section in the level 15.
  • the cross section of the mold cavity 6 is on the Mold exit side on all sides between the corners 8 straight.
  • With an arrow 2 is a peripheral portion of the circumferential line of the Mold cavity 6 denotes.
  • There are 4 circumferential sections in this mold provided with similar cross-sectional enlargements 7. Instead of the square basic shape of the mold cavity 6 could also have a hexagonal, rectangular etc. cross section as Serve basic form.
  • a dimension of light 20 between opposite sides of the mold cavity 6 on the pouring side 4 in the area of the largest bulge is compared to a light dimension 21 between the opposite Pages on strand exit page 5 are 5 - 15% larger.
  • the luminance 20 can also be at least 5% or at least 8% larger than the light dimension 22 in level 14 be 12 at the end of the partial length.
  • the arch height 10 of the bulge 9 decreases continuously in the direction of the strand 11 with the following cross sections.
  • the partial length 12 is 400 mm or about 50% of the in this example Mold length that measures about 800 mm.
  • height curves 30-33 show a corner of a bulged Mold cavity 35.
  • the height curve 30 represents the top edge of the mold cavity 35 of the mold 34.
  • With 36 is the wall thickness of a mold tube indicated.
  • 33 shows the height curve at the mold exit. Between the curves 30 and 33, the taper can be read out at two intermediate levels.
  • Curves 31 and 32 show the decreasing arc heights of the bulges that occur during of casting cause deformation of the strand crust.
  • the taper of the mold cavity 35 In the area of the fillet 38 there is the taper of the mold cavity 35 along a diagonal cut along the line 39 0-1% / m, preferably 0.1-0.5% / m. A deformation along the strand crust Line 39 is usually not provided.
  • FIG. 4 shows similar height curves 40-43 as in FIG. 3.
  • the main difference lies in the design of the Fillet 48 along the diagonal line 49.
  • the fillet 48 has a negative cone in the direction of the strand. In the corner area a cavity expansion is thus provided in the direction of the strand.
  • the selected bow height Bulge that needs to be reshaped may be of interest be a negative cone at corners 48 along the diagonal line 49 to provide for any jamming of the strand in to switch off the mold.
  • the corner area can additionally cooling in the edge area of the Stranges are controlled.
  • a negative cone along the diagonal line 49 may also be desirable for tendon extensions to recover from bulging bulges that cannot be compensated for by the shrinkage.
  • Fig. 5 the bulges are straight by compound Lines limited. Elevation curves 50 - 53 represent a steady decline of the bulges. So in the middle of the bulged sides there is no abutting edge, a rounding 54 is provided. The straight lines run tangentially to a fillet 58. In This example is along the fillet 58 in the direction of the strand no taper provided. In a cut along the Diagonal 59, the fillet 58 runs essentially parallel to the longitudinal central axis of the mold.
  • FIGS. 6 and 7 show molds whose mold cavities 60 or 70 are limited by curved and circular surfaces.
  • Circumferential lines 61, 71 of the mold cavity cross section are in three Circumferential sections 62, 72 divided.
  • the number of circumferential sections 62, 72 can be chosen freely, essentially round molds, as shown in the figures, usually in 3 - 6 peripheral sections 62, 72 are divided.
  • Any perimeter section 62, 72 on the pouring side points opposite the strand exit side a cross-sectional enlargement in the form of a Bulge 63, 73 on. In these examples are the cross-sectional enlargements due to bulges limited by arches shown.
  • each peripheral section 62, 72 the taper is zero to 1% / m and in the middle 67, 77 of the peripheral sections is usually a taper between 10 - 35% / m provided.
  • the strand in two partial lengths that are directly adjacent to each other follow or has an intermediate zone between the partial lengths, to deform.
  • the peripheral sections the successive partial lengths offset from each other, preferably offset by half a circumferential section become.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
EP92101506A 1991-02-06 1992-01-30 Kokille zum Stranggiessen von Metallen, insbesondere von Stahl Expired - Lifetime EP0498296B2 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CH36791 1991-02-06
CH36791 1991-02-06
CH367/91 1991-02-06
CH326391 1991-11-08
CH326391 1991-11-08
CH3263/91 1991-11-08

Publications (4)

Publication Number Publication Date
EP0498296A2 EP0498296A2 (de) 1992-08-12
EP0498296A3 EP0498296A3 (en) 1992-09-02
EP0498296B1 EP0498296B1 (de) 1994-05-18
EP0498296B2 true EP0498296B2 (de) 2000-12-06

Family

ID=25684364

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92101506A Expired - Lifetime EP0498296B2 (de) 1991-02-06 1992-01-30 Kokille zum Stranggiessen von Metallen, insbesondere von Stahl

Country Status (13)

Country Link
US (1) US5360053A (xx)
EP (1) EP0498296B2 (xx)
JP (1) JPH0767600B2 (xx)
KR (1) KR970005365B1 (xx)
CN (1) CN1032629C (xx)
AT (1) ATE105750T1 (xx)
BR (1) BR9200393A (xx)
CA (1) CA2060604C (xx)
DE (1) DE59200159D1 (xx)
ES (1) ES2056670T5 (xx)
FI (1) FI97702C (xx)
MX (1) MX9200481A (xx)
TR (1) TR27065A (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4318105B4 (de) * 1992-06-11 2004-05-13 Concast Standard Ag Kokille zum Stranggießen von Metall und Verfahren zur Herstellung der Kokille
CN102470425A (zh) * 2009-08-04 2012-05-23 西门子Vai金属技术有限公司 用于连续铸造长型或平型产品的结晶器、设计成与这种结晶器配合的冷却套及包括这种结晶器和这种冷却套的组件

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DK0627968T3 (da) * 1992-03-05 1996-01-08 Concast Standard Ag Fremgangsmåde til strengstøbning af metal, især stål i barre- og råblokform
DE4403050C1 (de) * 1994-01-28 1995-09-28 Mannesmann Ag Stranggießkokille zum Führen von Strängen
IT1267244B1 (it) * 1994-05-30 1997-01-28 Danieli Off Mecc Procedimento di colata continua per acciai ad alto contenuto di carbonio
IT1267243B1 (it) * 1994-05-30 1997-01-28 Danieli Off Mecc Procedimento di colata continua per acciai peritettici
ATE183679T1 (de) * 1994-07-25 1999-09-15 Concast Standard Ag Straggiesskokille für ein doppel-t-vorprofil
DE19508169C5 (de) * 1995-03-08 2009-11-12 Kme Germany Ag & Co. Kg Kokille zum Stranggießen von Metallen
AT404235B (de) * 1995-04-18 1998-09-25 Voest Alpine Ind Anlagen Stranggiesskokille
SE9501708L (sv) * 1995-05-09 1996-11-10 Metallforskning Inst Kokill
DE19606291C5 (de) * 1996-02-21 2010-01-21 Kme Germany Ag & Co. Kg Kokillenrohr
CA2264890A1 (en) * 1996-09-03 1998-03-12 Ag Industries, Inc. Improved mold surface for continuous casting and process for making
DE19639299C2 (de) * 1996-09-25 2001-02-22 Sms Demag Ag Vorrichtung zur Herstellung eines Vielkant- oder Profil-Formats in einer Stranggießanlage
JP3197230B2 (ja) * 1997-04-08 2001-08-13 三菱重工業株式会社 ビレット連続鋳造機及び鋳造方法
ES2152132B1 (es) * 1997-07-31 2001-07-01 Sidenor Investigacion Y Desarr "lingotera perfeccionada y lingote obtenido con la misma".
GB9719318D0 (en) * 1997-09-12 1997-11-12 Kvaerner Clecim Cont Casting Improvements in and relating to casting
PT931608E (pt) 1997-12-24 2003-01-31 Europa Metalli Spa Molde de vazamento continuo
CH693130A5 (de) * 1998-05-18 2003-03-14 Concast Standard Ag Kokille zum Stranggiessen von im wesentlichen polygonalen Strängen.
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
DE19859040A1 (de) * 1998-12-21 2000-06-29 Km Europa Metal Ag Kokillenrohr und Verfahren zum Rekalibrieren eines Kokillenrohrs
DE19909210A1 (de) * 1999-03-03 2000-09-07 Sms Demag Ag Gießprofil für Stranggießprodukte aus Stahl in Form von Brammen
CN1192832C (zh) 1999-12-29 2005-03-16 瑞士商康凯斯史丹股份公司 连铸结晶器内腔壁的加工方法和装置
AU2002244616A1 (en) * 2001-02-09 2002-08-28 Egon Evertz K.G. (Gmbh And Co) Continuous casting ingot mould
DE10218957B4 (de) * 2002-04-27 2004-09-30 Sms Demag Ag Stranggießkokille für flüssige Metalle, insbesondere für flüssigen Stahl
UA79025C2 (uk) * 2002-11-13 2007-05-10 Смс Демаг Акцієнгезелльшафт Кристалізатор для безперервного розливу рідких металів, зокрема сталей, при високій швидкості розливу для одержання полігональних сортових, чорнових і призначених для прокату на блюмінгу заготовок
US20060191661A1 (en) * 2003-10-01 2006-08-31 Zajber Adolf G Continuous casting mold for casting molten metals, particularly steel materials, at high casting rates to form polygonal billet, bloom, and preliminary section castings and the like
PT1547705E (pt) * 2003-12-27 2008-06-06 Concast Ag Processo para o vazamento contínuo de lingotes em forma de barras e blocos e cavidade de molde de uma lingoteira destinada ao vazamento contínuo
EP1676658B1 (de) 2004-12-29 2008-04-16 Concast Ag Stahlstranggiessanlage für Knüppel- und Vorblockformate
US7493936B2 (en) * 2005-11-30 2009-02-24 Kobe Steel, Ltd. Continuous casting method
EP2025432B2 (de) * 2007-07-27 2017-08-30 Concast Ag Verfahren zur Erzeugung von Stahl-Langprodukten durch Stranggiessen und Walzen
AU2010211605A1 (en) 2009-02-09 2011-08-25 Toho Titanium Co., Ltd. Titanium slab for hot rolling produced by electron-beam melting furnace, process for production thereof, and process for rolling titanium slab for hot rolling
BRPI0924937B1 (pt) * 2009-03-19 2017-07-18 Nippon Steel & Sumitomo Metal Corporation Method of continuous casting, laterally narrow molding plate, and mold for continuous casting
RU2456120C1 (ru) * 2011-02-25 2012-07-20 Владимир Павлович Серёдкин Способ и кокиль для отливки гильзы кристаллизатора
KR101360564B1 (ko) * 2011-12-27 2014-02-24 주식회사 포스코 연속주조 주형
CN103184490B (zh) * 2011-12-27 2015-06-24 上海宝钢设备检修有限公司 结晶器铜板仿形电镀的方法
US8365808B1 (en) 2012-05-17 2013-02-05 Almex USA, Inc. Process and apparatus for minimizing the potential for explosions in the direct chill casting of aluminum lithium alloys
CN105008064B (zh) 2013-02-04 2017-06-06 美国阿尔美有限公司 用于使铝锂合金的直接冷硬铸造中爆炸的可能性最小化的方法和装置
US9936541B2 (en) 2013-11-23 2018-04-03 Almex USA, Inc. Alloy melting and holding furnace
JP6427945B2 (ja) * 2014-05-09 2018-11-28 新日鐵住金株式会社 ブルームの連続鋳造方法
ITUB20155525A1 (it) * 2015-11-12 2017-05-12 Milorad Pavlicevic Cristallizzatore, lingottiera associata a detto cristallizzatore e relativo metodo di realizzazione
CN111889636B (zh) * 2020-07-29 2021-05-18 大连理工大学 灯泡型连铸结晶器芯棒

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4318105B4 (de) * 1992-06-11 2004-05-13 Concast Standard Ag Kokille zum Stranggießen von Metall und Verfahren zur Herstellung der Kokille
CN102470425A (zh) * 2009-08-04 2012-05-23 西门子Vai金属技术有限公司 用于连续铸造长型或平型产品的结晶器、设计成与这种结晶器配合的冷却套及包括这种结晶器和这种冷却套的组件

Also Published As

Publication number Publication date
EP0498296A3 (en) 1992-09-02
FI97702B (fi) 1996-10-31
US5360053A (en) 1994-11-01
BR9200393A (pt) 1992-10-13
MX9200481A (es) 1992-11-01
ES2056670T3 (es) 1994-10-01
CN1064034A (zh) 1992-09-02
EP0498296A2 (de) 1992-08-12
FI920487A0 (fi) 1992-02-05
JPH0767600B2 (ja) 1995-07-26
CN1032629C (zh) 1996-08-28
KR970005365B1 (ko) 1997-04-15
ATE105750T1 (de) 1994-06-15
FI920487A (fi) 1992-08-07
KR920016173A (ko) 1992-09-24
EP0498296B1 (de) 1994-05-18
ES2056670T5 (es) 2001-02-01
TR27065A (tr) 1994-10-12
JPH04319044A (ja) 1992-11-10
DE59200159D1 (de) 1994-06-23
CA2060604A1 (en) 1992-08-07
CA2060604C (en) 1999-02-09
FI97702C (fi) 1997-02-10

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