US20100065242A1 - Continuous castings die with coolant channel - Google Patents

Continuous castings die with coolant channel Download PDF

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Publication number
US20100065242A1
US20100065242A1 US12/448,953 US44895307A US2010065242A1 US 20100065242 A1 US20100065242 A1 US 20100065242A1 US 44895307 A US44895307 A US 44895307A US 2010065242 A1 US2010065242 A1 US 2010065242A1
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US
United States
Prior art keywords
chill
turbulence
wall
generating elements
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.)
Abandoned
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US12/448,953
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English (en)
Inventor
Hans-Jürgen Odenthal
Norbert Vogl
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SMS Siemag AG
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Individual
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Filing date
Publication date
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Assigned to SMS DEMAG AKTIENGESELLSCHAFT reassignment SMS DEMAG AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VOGL, NORBERT, ODENTHAL, HANS-JURGEN
Publication of US20100065242A1 publication Critical patent/US20100065242A1/en
Assigned to SMS SIEMAG AKTIENGESELLSCHAFT reassignment SMS SIEMAG AKTIENGESELLSCHAFT CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SMS DEMAG AG
Abandoned 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/055—Cooling the 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

Definitions

  • the invention relates to a continuous casting chill with a coolant duct, which is formed by a chill inner wall facing the molten metal, as the hot side, a chill outer wall as the cold side and a right and a left side wall.
  • a chill wall of a continuous casting chill which consists of a chill inner plate and a water compartment connected to the chill inner plate by screw connections, with the chill inner plate having on its side facing the water compartment webs with grooves running therebetween, in which fillers are arranged.
  • the grooves serve here as cooling ducts for a coolant, generally water.
  • the fillers serve to reduce the duct cross-section, so that the speed of flow of the coolant in the cooling duct is increased.
  • Continuous casting chills with cooling ducts are additionally known from the documents DE 101 22 618 A1, DE 100 35 737 A1 and DE 101 38 988 C2.
  • a chill for the continuous casting of molten metals, particularly of steel, with cooling ducts such as cooling grooves, cooling slits or cooling bores in the contact surface lying opposite the chill hot side.
  • the heat transmission of the chill is improved in that the geometric shapes of the heat-transmitting surfaces of a cooling duct or of a group of cooling ducts is adapted in form, cross-sectional area, circumference, boundary surface quality, orientation to the contact surface, arrangement and/or arrangement density with respect to the contact surface of the local formation of heat flow density and/or temperature of the contact surface in the casting operation, and in particular in the region of the casting level.
  • the fluid melt flows out from a continuous casting distributor through an immersion tube into an oscillating, water-cooled copper chill.
  • the melt temperature falls below the solidus temperature and a thin strand shell is formed which is withdrawn in the casting direction.
  • the thickness of the strand shell increases until the strand is completely solidified.
  • casting speeds of 6 m/min and above are nowadays achieved.
  • Typical local heat flow densities lie in the order of up to 12 MW/square metre.
  • the heat flow which is carried off by the coolant is, inter alia, dependent on the geometry of the coolant ducts, the roughness of the walls and the through-flow speed and hence also on the degree of turbulence.
  • the heat-transmitting area can in fact be increased, but close limits are set for this increase.
  • a contamination frequently takes place of the heat-transmitting surfaces by deposits, which is known as fouling.
  • fouling in the case of chill cooling leads to an intensive increase in the copper temperature and hence to a reduced service life of the chill.
  • the invention is based on the problem of providing a continuous casting chill in which the recrystallization process of the chill material or the material of the walls of the coolant duct which is dependent on the operating temperature and the duration of operation, is decelerated, the service life of the chill and the turbulence are increased and a homogeneous intermixture of the coolant is achieved.
  • the coolant duct is formed with elements which generate turbulence.
  • the turbulence-generating elements increase the heat-transmitting area of the coolant duct or of the chill walls. The cooperation of the two measures, i.e. turbulence generation and increase of the heat-transmitting area, improves the local heat transmission from the walls of the coolant duct or from its walls to the coolant, which then carries off the heat.
  • the fundamental principle of all turbulence-generating elements is based on the turbulence-induced transportation of mass, impulse and energy.
  • the thermal transmission in the coolant duct of continuous casting chills is improved in accordance with the invention.
  • the turbulence generators lead to higher local heat flow densities, i.e. the heat which is carried off per unit of area is increased.
  • the turbulence, both in the vicinity of the wall and also in the region of the core flow is increased and a homogeneous intermixture is achieved.
  • the material of the chill or of the chill walls is, for example, copper, partially copper or another material.
  • the contamination and the tendency to deposits are reduced by the increased turbulence and the greater shear forces on the hot side of the cooling duct.
  • a first embodiment of turbulence-generating elements consists of horizontal stages in the coolant which are formed for example by rectangular profiles which extend over the entire width or partial regions of the coolant duct.
  • a second and third embodiment of turbulence-generating elements has the form of tetrahedra and winglets. In these forms, inwardly turning vortex trains are induced which lead to an even more intensive intermixture of the coolant. Vortex trains can be seen for example at the end of an airfoil or behind motor vehicles, where they are basically undesired.
  • the turbulence-generating elements are arranged on the hot side for example staggered one behind the other, with the spacing being determined applicably by the spatial extent of the recirculation area lying upstream.
  • the turbulence-generating elements can also be installed on the cold side, because the effect of the recirculation extends up to the hot side.
  • a combination of tetrahedra on the cold side and horizontally arranged stages on the hot side of the coolant duct is also possible.
  • the heat-transmitting area is increased somewhat by the turbulence elements, by approximately 6% with the described tetrahedra. In this way, the local heat flow density is also increased.
  • the pressure loss can be kept low through the dimensions of the turbulence elements which are not selected to be too great.
  • FIG. 1 a part of a continuous casting chill in three-dimensional illustration
  • FIG. 2 the continuous casting chill in front view in section with turbulence-generating elements according to a first embodiment
  • FIG. 3 the continuous casting chill in front view in section with turbulence-generating elements according to a second embodiment
  • FIG. 4 the continuous casting chill in front view in section with turbulence-generating elements according to a third embodiment
  • FIG. 5 the continuous casting chill in side view in section with turbulence generating elements.
  • FIG. 1 shows in three-dimensional illustration a part of a continuous casting chill 1 with a coolant duct 2 , which is formed by a chill inner wall 3 facing the molten metal as the hot side, a chill outer wall 4 as the cold side and right side wall 5 and a left side wall 6 .
  • Turbulence-generating elements 7 , 9 and 10 are arranged in the direction of flow 8 on the chill inner wall 3 , the hot side, and project into the coolant duct 2 .
  • FIG. 2 shows in a front view in section the coolant duct 2 , in which turbulence-generating elements 7 in the form of tetrahedra are arranged in two rows 11 on the chill inner wall 3 .
  • the tetrahedra point with their tip in opposition to the direction of flow 8 . Through such an arrangement, an increasing resistance is produced.
  • the coolant behaves in a turbulent manner behind the tetrahedron.
  • the tetrahedra can also be arranged so as to be staggered.
  • turbulence-generating elements 9 are illustrated in the form of horizontal stages.
  • the horizontal stages are formed for example by a rectangular bar (see FIG. 5 ) which extends over the entire width of the coolant duct 2 .
  • FIG. 4 A further form of the turbulence-generating elements 10 is illustrated in FIG. 4 .
  • These turbulence-generating elements have the form of winglets. These winglets, known for example from aeroplane wings, are either fastened on the chill inner wall 3 aligned in rows 11 one behind the other, or are fastened distributed on the chill inner wall, as indicated by the lowermost winglet.
  • All the turbulence-generating elements 7 , 9 and 10 project from the chill inner wall 3 into the coolant duct 2 or vice-versa and influence the coolant when it flows in the flow direction 8 through the coolant duct 2 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
US12/448,953 2007-01-17 2007-12-11 Continuous castings die with coolant channel Abandoned US20100065242A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007002405.5 2007-01-17
DE102007002405A DE102007002405A1 (de) 2007-01-17 2007-01-17 Stranggießkokille mit Kühlmittelkanal
PCT/EP2007/010773 WO2008086856A1 (de) 2007-01-17 2007-12-11 Stranggiesskokille mit kühlmittelkanal

Publications (1)

Publication Number Publication Date
US20100065242A1 true US20100065242A1 (en) 2010-03-18

Family

ID=39168055

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/448,953 Abandoned US20100065242A1 (en) 2007-01-17 2007-12-11 Continuous castings die with coolant channel

Country Status (15)

Country Link
US (1) US20100065242A1 (de)
EP (1) EP2121218A1 (de)
JP (1) JP2010515580A (de)
KR (1) KR20090077925A (de)
CN (1) CN101646515B (de)
AR (1) AR064927A1 (de)
BR (1) BRPI0718884A2 (de)
CA (1) CA2670037A1 (de)
DE (1) DE102007002405A1 (de)
MX (1) MX2009007659A (de)
RU (1) RU2414986C1 (de)
TW (1) TW200909099A (de)
UA (1) UA92985C2 (de)
WO (1) WO2008086856A1 (de)
ZA (1) ZA200902185B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900001035A1 (it) * 2019-01-24 2020-07-24 Danieli Off Mecc Lingottiera per colata continua

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017206914A1 (de) * 2017-04-25 2018-10-25 Sms Group Gmbh Stranggießkokille mit strömungsoptimierter Kühlung
EP3878572A4 (de) * 2018-11-09 2021-09-15 JFE Steel Corporation Form zum strahlstranggiessen und strahlstranggiessverfahren
JP7020376B2 (ja) * 2018-11-09 2022-02-16 Ｊｆｅスチール株式会社 鋼の連続鋳造用鋳型及び鋼の連続鋳造方法
CN109434044A (zh) * 2018-11-29 2019-03-08 李泽朋 带造浪效果冷却结构合理的连铸结晶铜板模结构
RU2711276C1 (ru) * 2018-12-05 2020-01-16 Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" Устройство для непрерывного литья и прессования

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4716954A (en) * 1986-10-24 1988-01-05 Allegheny Ludlum Corporation Method and apparatus for sequentially continuous casting different composition grades of steel
US5611390A (en) * 1994-06-06 1997-03-18 Danieli & C. Officine Meccaniche Spa Continuous-casting crystalliser with increased heat exchange and method to increase the heat exchange in a continuous-casting crystalliser

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Publication number Priority date Publication date Assignee Title
FR2661120B3 (fr) * 1990-04-20 1992-04-03 Siderurgie Fse Inst Rech Lingotiere de coulee continue de metal liquide equipee de moyens de controle de la solidification du metal liquide.
IT1267246B1 (it) * 1994-06-06 1997-01-28 Danieli Off Mecc Sottolingottiera a pareti per colata continua
ATE195450T1 (de) 1994-06-06 2000-09-15 Danieli Off Mecc Stranggiesskokille mit verbessertem wärmeaustausch sowie verfahren zur erhöhung des wärmeaustauschs einer stranggiesskokille
EP0686445B1 (de) 1994-06-06 2000-08-16 DANIELI & C. OFFICINE MECCANICHE S.p.A. Verfahren zum Kontrollieren der Verformung von Seitenwänden einer Kokille sowie Stranggiesskokille
US5522448A (en) * 1994-09-27 1996-06-04 Aluminum Company Of America Cooling insert for casting mold and associated method
DE19508169C5 (de) * 1995-03-08 2009-11-12 Kme Germany Ag & Co. Kg Kokille zum Stranggießen von Metallen
DE19826522A1 (de) 1998-06-15 1999-12-16 Schloemann Siemag Ag Kokillenwand einer Stranggießkokille
CN1240685A (zh) * 1998-07-02 2000-01-12 Sms舒路曼-斯玛公司 扁锭结晶器的宽边
DE19842674A1 (de) 1998-09-17 2000-03-23 Schloemann Siemag Ag Kokillenwand einer Stranggießkokille
IT1310518B1 (it) * 1999-01-13 2002-02-18 Danieli Off Mecc Dispositivo per colata continua ad alta velocita' e relativoprocedimento
DE10035737A1 (de) 2000-07-22 2002-01-31 Sms Demag Ag Stranggießkokille mit den Gießquerschnitt umschließenden Kupferplatten
DE10138988C2 (de) 2000-08-23 2003-06-12 Sms Demag Ag Gekühlte Stranggießkokille zum Gießen von Metall
DE10122618A1 (de) 2001-05-10 2002-11-14 Sms Demag Ag Verfahren zur Verzögerung der Belagbildung in Kühlkanälen von Stranggießkokillen
DE10253735A1 (de) 2002-04-27 2003-11-13 Sms Demag Ag Intensivierung des Wärmeüberganges bei Stranggießkokillen
DE10337205A1 (de) * 2003-08-13 2005-03-10 Km Europa Metal Ag Flüssigkeitsgekühlte Kokille

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4716954A (en) * 1986-10-24 1988-01-05 Allegheny Ludlum Corporation Method and apparatus for sequentially continuous casting different composition grades of steel
US5611390A (en) * 1994-06-06 1997-03-18 Danieli & C. Officine Meccaniche Spa Continuous-casting crystalliser with increased heat exchange and method to increase the heat exchange in a continuous-casting crystalliser

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900001035A1 (it) * 2019-01-24 2020-07-24 Danieli Off Mecc Lingottiera per colata continua
WO2020152363A1 (en) * 2019-01-24 2020-07-30 Danieli & C. Officine Meccaniche S.P.A. Mold for continuous casting

Also Published As

Publication number Publication date
EP2121218A1 (de) 2009-11-25
UA92985C2 (ru) 2010-12-27
JP2010515580A (ja) 2010-05-13
MX2009007659A (es) 2009-10-13
ZA200902185B (en) 2010-01-27
KR20090077925A (ko) 2009-07-16
CA2670037A1 (en) 2008-07-24
CN101646515B (zh) 2012-06-13
WO2008086856A1 (de) 2008-07-24
BRPI0718884A2 (pt) 2013-12-17
DE102007002405A1 (de) 2008-07-24
RU2414986C1 (ru) 2011-03-27
AR064927A1 (es) 2009-05-06
CN101646515A (zh) 2010-02-10
TW200909099A (en) 2009-03-01

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SMS DEMAG AKTIENGESELLSCHAFT,GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ODENTHAL, HANS-JURGEN;VOGL, NORBERT;SIGNING DATES FROM 20090414 TO 20090420;REEL/FRAME:022987/0560

AS Assignment

Owner name: SMS SIEMAG AKTIENGESELLSCHAFT, GERMANY

Free format text: CHANGE OF NAME;ASSIGNOR:SMS DEMAG AG;REEL/FRAME:025192/0325

Effective date: 20090325

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION