EP1250972A2 - Procédé et dispositif pour couler en continue des brames, en particulier de brames minces - Google Patents

Procédé et dispositif pour couler en continue des brames, en particulier de brames minces Download PDF

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Publication number
EP1250972A2
EP1250972A2 EP02006338A EP02006338A EP1250972A2 EP 1250972 A2 EP1250972 A2 EP 1250972A2 EP 02006338 A EP02006338 A EP 02006338A EP 02006338 A EP02006338 A EP 02006338A EP 1250972 A2 EP1250972 A2 EP 1250972A2
Authority
EP
European Patent Office
Prior art keywords
mold
walls
ultrasonic
melt
slabs
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Withdrawn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
EP02006338A
Other languages
German (de)
English (en)
Other versions
EP1250972A3 (fr
Inventor
Hans Streubel
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 EP1250972A2 publication Critical patent/EP1250972A2/fr
Publication of EP1250972A3 publication Critical patent/EP1250972A3/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Withdrawn legal-status Critical Current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
    • B22D11/053—Means for oscillating the moulds

Definitions

  • the invention relates to a method for the continuous casting of slabs, in particular of thin slabs made of steel using a continuous mold with the inside wall molten mold walls covered with cooling liquid are flowed through or can be cooled in contact with coolers.
  • the molten steel occurs particularly in the area of the bath level the mold with high heat flow density very high temperature stresses Mold walls that lead to their disadvantageous changes and thus shorten the reworking intervals of the molds Surface quality of the casting strand is impaired.
  • the level of the temperature stress on the mold walls is essentially of functional parameters such as casting speed, copper wall thickness before coolant, possible bath level fluctuations, steel quality, mold wall quality and, in a special way, the nature of a layer of mold powder dependent.
  • Document EP 0 807 477 A1 describes a system for continuous Casting metal strands from molten metal using a mold, that of side walls with cooling channels adjoining outer wall areas is surrounded.
  • the outside of the mold walls have a variety of electromagnetic Devices on the mold walls independently, separately as well are arranged differently to the casting direction and to produce pulsating electromagnetic fields to the axis of the mold and along the length of the belt wandering, being excited.
  • current pulses from the electromagnets are in the strength up to 100 KA are provided to the pulsating electromagnetic Generate field that interacts with the melt.
  • the document EP 0 807 478 A1 describes a continuous mold for casting Strands with different cross-sectional shapes, the mold of the plate type or can be tubular and has cooled side walls, at least an elongated peripheral area with electrically insulated elements as well form with two insulated ends each. On the side walls are electromagnetic Waves generated, at least with the frozen Strand shell should interact.
  • EP 0 807 475 A1 describes a method for generating transverse vibrations in the walls of a continuous mold for slabs using pulsation a liquid.
  • the mold sometimes has one or more peripheral ones Areas where cooling fluid circulates around the side walls of the mold and the cooling circuit with transition channels in direct contact with one or several of the side walls.
  • the cooling medium With the help of at least one pump with one Supply and discharge line in connection with an outlet, the cooling medium in Circulation offset around the side walls of the mold.
  • the pressure of the coolant and the pulsation in the pressure curve is dependent on the desired transverse vibration a side wall.
  • EP 0 698 434 A1 describes a continuous caster for casting thin slabs made of steel with an electromagnetic brake device for through a dip tube poured into the mold melt.
  • the braking device exists of one coil each arranged on the broad sides of the mold with a ferromagnetic Core and a yoke enclosing the mold.
  • To create a simple, inexpensive and definable braking device are the ferromagnetic cores each consisting of a main core and a casting strand side Partial core formed, with different partial cores for adaptation of the magnetic field can alternatively be used in changing casting conditions.
  • the document WO 99/02 286 describes an electromagnetic stirring method for a mold of the plate type for the continuous casting of blooms, plates or Round material, using means for producing a magnetic Field in interaction with the molten metal within the mold. in this connection is intended to circulate electrical current directly along the side walls of the Chill mold can be built. There should also be electromagnetic forces across Pouring direction are generated to separate the strand shell of the solidifying Cause metal from the side walls of the mold and thereby the friction between the strand shell and the side wall.
  • the object of the invention based on a method of the type mentioned in the preamble of claim 1 to perfect and improve it so that the heat transfer between the melt and the mold walls, especially in the area of Bath level of the melt is significantly reduced, so that special steels, such as peritectic steels, can be cast easily.
  • Farther is intended with the invention of the coefficient of friction between the strand shell and the Mold walls can be significantly reduced, so that the rework cycles for the Mold walls increased and thus the availability of the mold significantly is extended.
  • the process for continuously casting slabs provides a solution to the problem, in particular of thin slabs of steel, according to the preamble of claim 1 before that the mold walls using ultrasonic sensors in Ultrasonic vibrations with a comparatively high frequency and adapted amplitude are offset such that the heat transfer between the melt and Mold wall and the coefficient of friction between the strand shell and the mold wall is reduced.
  • This makes both the thermal and mechanical high stress on the mold walls, especially in the area of the bathroom mirror, of the so-called meniscus, significantly reduced.
  • the wear of the mold plates in this area decreases and the availability of the mold is in increased in the same way.
  • the proposed invention the casting of critical steel qualities, e.g. peritectic steels, possible.
  • the vibration parameters frequency and amplitude can be different Individual ultrasound transmitters based on observed operating results can be set. This makes sense because of the vibration parameters of a number of interacting influencing factors such as type the mold, thickness and material of the mold walls, arrangement and size of the Coolant channels in the mold walls etc. depend and therefore on a case by case basis can be very different.
  • an embodiment of the method according to the invention provides that Ultrasonic waves are emitted in the direction perpendicular to a mold wall against this become.
  • ultrasonic sensors on the outside of Mold walls at the level of the liquid level or the meniscus, or just below be arranged in the same, so that in the particularly thermal and mechanical highly stressed area of the mold walls in particular be intensively protected.
  • the experience of Casting technician are introduced on site in the inventive method.
  • Ultrasound transmitters can be arranged on the wide and narrow sides of the mold.
  • They can also be arranged in rows one above the other or one above the other, such that that with it all possible essential areas of the mold plates with ultrasonic waves be sonicated for differences in their training and adherence to avoid from the outset.
  • the mold walls 13, 13 'and preferably in at least two rows with one another Height of the bath level or meniscus 11 arranged ultrasound transmitter 6, 6 ', and in such a way that its ultrasonic waves 7, 7 'hit the walls 13, 13' cut the mold 5 at right angles and in the area of Bath level 11 penetrate into the melt 9 or into the strand shell 8. there reduce the contact between the melt and the mold wall 13, 13 'in the casting area 11 or between the strand shell 8 and the mold wall 13, 13 'and lead to a significant reduction in the heat flow density as well the friction between the mold walls and the melt 9.
  • the invention is both economical due to higher availability the mold walls, as well as from an operational point of view because of the possibility of easy casting of so-called critical steels such as peritectic Steels enrich the continuous casting technology.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP02006338A 2001-04-20 2002-03-21 Procédé et dispositif pour couler en continue des brames, en particulier de brames minces Withdrawn EP1250972A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001119355 DE10119355A1 (de) 2001-04-20 2001-04-20 Verfahren und Vorrichtung zum Stranggießen von Brammen, insbesondere von Dünnbrammen
DE10119355 2001-04-20

Publications (2)

Publication Number Publication Date
EP1250972A2 true EP1250972A2 (fr) 2002-10-23
EP1250972A3 EP1250972A3 (fr) 2004-09-22

Family

ID=7682079

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02006338A Withdrawn EP1250972A3 (fr) 2001-04-20 2002-03-21 Procédé et dispositif pour couler en continue des brames, en particulier de brames minces

Country Status (2)

Country Link
EP (1) EP1250972A3 (fr)
DE (1) DE10119355A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9481031B2 (en) 2015-02-09 2016-11-01 Hans Tech, Llc Ultrasonic grain refining
US10022786B2 (en) 2015-09-10 2018-07-17 Southwire Company Ultrasonic grain refining
CN109317629A (zh) * 2018-11-22 2019-02-12 东北大学 一种利用功率超声控制连铸坯质量的系统及方法
US10233515B1 (en) 2015-08-14 2019-03-19 Southwire Company, Llc Metal treatment station for use with ultrasonic degassing system
US10316387B2 (en) 2013-11-18 2019-06-11 Southwire Company, Llc Ultrasonic probes with gas outlets for degassing of molten metals
US10640846B2 (en) 2010-04-09 2020-05-05 Southwire Company, Llc Ultrasonic degassing of molten metals
CN112091191A (zh) * 2020-11-11 2020-12-18 西安斯瑞先进铜合金科技有限公司 一种非真空下引半连铸铜锰合金扁锭的制备方法及其装置
CN112846120A (zh) * 2021-01-06 2021-05-28 鞍钢股份有限公司 一种细化高锰钢连铸坯凝固组织的装置及方法
CN113102733A (zh) * 2021-03-30 2021-07-13 西北工业大学 多向耦合的壁面振动三维超声金属凝固装置与方法
EP4725624A1 (fr) 2024-10-14 2026-04-15 Amazemet Spolka Z Ograniczona Odpowiedzialnoscia Procédé d'atomisation de charge d'alimentation en poudre et dispositif d'atomisation de charge d'alimentation en poudre

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE539823T1 (de) 2008-03-05 2012-01-15 Southwire Co Ultraschallsonde mit schutzschicht aus niobium
US8652397B2 (en) 2010-04-09 2014-02-18 Southwire Company Ultrasonic device with integrated gas delivery system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59197366A (ja) * 1983-04-26 1984-11-08 Nippon Steel Corp 連続鋳造鋳型の振幅制御方法
JPS6099453A (ja) * 1983-11-04 1985-06-03 Sumitomo Metal Ind Ltd 連続鋳造用超音波振動鋳型
JPS6313653A (ja) * 1986-07-04 1988-01-20 Sumitomo Metal Ind Ltd 鋼の連続鋳造方法
JPS63140744A (ja) * 1986-12-02 1988-06-13 Sumitomo Metal Ind Ltd 連続鋳造方法
CA1316325C (fr) * 1987-08-29 1993-04-20 Masatsugu Uehara Methode d'entrainement de moules a coulee continue dans un mouvement oscillant a hautes frequences et moule objet de ladite methode
FR2648063B1 (fr) * 1989-06-12 1994-03-18 Irsid Procede et dispositif de mise en vibration d'une lingotiere de coulee continue des metaux

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10640846B2 (en) 2010-04-09 2020-05-05 Southwire Company, Llc Ultrasonic degassing of molten metals
US10316387B2 (en) 2013-11-18 2019-06-11 Southwire Company, Llc Ultrasonic probes with gas outlets for degassing of molten metals
US10441999B2 (en) 2015-02-09 2019-10-15 Hans Tech, Llc Ultrasonic grain refining
US9481031B2 (en) 2015-02-09 2016-11-01 Hans Tech, Llc Ultrasonic grain refining
US10233515B1 (en) 2015-08-14 2019-03-19 Southwire Company, Llc Metal treatment station for use with ultrasonic degassing system
US10022786B2 (en) 2015-09-10 2018-07-17 Southwire Company Ultrasonic grain refining
US10639707B2 (en) 2015-09-10 2020-05-05 Southwire Company, Llc Ultrasonic grain refining and degassing procedures and systems for metal casting
CN109317629A (zh) * 2018-11-22 2019-02-12 东北大学 一种利用功率超声控制连铸坯质量的系统及方法
CN112091191A (zh) * 2020-11-11 2020-12-18 西安斯瑞先进铜合金科技有限公司 一种非真空下引半连铸铜锰合金扁锭的制备方法及其装置
CN112091191B (zh) * 2020-11-11 2021-02-09 西安斯瑞先进铜合金科技有限公司 一种非真空下引半连铸铜锰合金扁锭的制备方法及其装置
CN112846120A (zh) * 2021-01-06 2021-05-28 鞍钢股份有限公司 一种细化高锰钢连铸坯凝固组织的装置及方法
CN112846120B (zh) * 2021-01-06 2022-08-16 鞍钢股份有限公司 一种细化高锰钢连铸坯凝固组织的装置及方法
CN113102733A (zh) * 2021-03-30 2021-07-13 西北工业大学 多向耦合的壁面振动三维超声金属凝固装置与方法
CN113102733B (zh) * 2021-03-30 2022-03-01 西北工业大学 多向耦合的壁面振动三维超声金属凝固装置与方法
EP4725624A1 (fr) 2024-10-14 2026-04-15 Amazemet Spolka Z Ograniczona Odpowiedzialnoscia Procédé d'atomisation de charge d'alimentation en poudre et dispositif d'atomisation de charge d'alimentation en poudre

Also Published As

Publication number Publication date
DE10119355A1 (de) 2002-10-24
EP1250972A3 (fr) 2004-09-22

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