EP0167056B1 - Vorrichtung zum Stranggiessen von Metallen - Google Patents

Vorrichtung zum Stranggiessen von Metallen Download PDF

Info

Publication number
EP0167056B1
EP0167056B1 EP85107527A EP85107527A EP0167056B1 EP 0167056 B1 EP0167056 B1 EP 0167056B1 EP 85107527 A EP85107527 A EP 85107527A EP 85107527 A EP85107527 A EP 85107527A EP 0167056 B1 EP0167056 B1 EP 0167056B1
Authority
EP
European Patent Office
Prior art keywords
insert
mould
insulating
continuous casting
wall
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
Application number
EP85107527A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0167056A3 (en
EP0167056A2 (de
Inventor
Helmut Bachmann
Gerald Grieser
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.)
Novelis Koblenz GmbH
Original Assignee
Kaiser Aluminium Europe Inc
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 Kaiser Aluminium Europe Inc filed Critical Kaiser Aluminium Europe Inc
Priority to AT85107527T priority Critical patent/ATE31644T1/de
Publication of EP0167056A2 publication Critical patent/EP0167056A2/de
Publication of EP0167056A3 publication Critical patent/EP0167056A3/de
Application granted granted Critical
Publication of EP0167056B1 publication Critical patent/EP0167056B1/de
Expired 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
    • B22D11/0401—Moulds provided with a feed head
    • 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
    • B22D11/07—Lubricating the moulds

Definitions

  • the invention relates to a device for the continuous casting of metals with a continuous casting mold, in particular coolable by coolant, and with a thermally insulating insulating attachment.
  • the coolant that cools the mold is often also used to be directed against the outer jacket of the cast strand in order to ensure accelerated cooling thereof.
  • release agents which simultaneously serve as lubricants, this results in an even better continuous casting or ingot surface quality. It has been shown, however, that the release agent is to be supplied in very dosed quantities within very narrow limits.
  • the invention has for its object to improve the device with simple means to the effect that the dosage of the release agents is metered in a simple and optimal manner in accordance with the respective application.
  • the invention consists in the fact that the release agent feed channel or the release agent feed channels are formed in that the unevenness and depressions of an insert which is grainy on at least one surface serve to feed the release agent to the effective point.
  • an insert which is grainy on at least one surface serve to feed the release agent to the effective point.
  • This insert can simply be inserted axially between two abutting parts of the device, for example in the manner of a washer.
  • the feed channels formed by the “labyrinth” of the unevenness between an interface of such a device part and the insert guide the separating agent, in particular under the force of gravity, to the decisive point between the inner wall and the casting strand.
  • the dosage is primarily based on the grain size of the granular insert.
  • the release agent requirement is low, a very fine micro-grain size of 1000 grit (18 1 1m) is recommended and if the release agent requirement is high, a grain size of 180 (75 ⁇ m) grain, for example, while emery paper with a grain size of 320 (46 ⁇ m) allows good optimization.
  • the consumption of release agents per cast strand of 200 mm 0 and 7,500 mm in length is only 2 gram when using rapeseed oil.
  • ceramic insulating rings in particular are stacked axially one behind the other in order to form the insulating insert.
  • the insulating rings are held radially within an essentially tubular sensor.
  • the insulating rings are essentially prevented from expanding radially during operation, as a result of which the risk of cracks can be countered well, without this resulting in considerable additional costs.
  • the longer service life of the insulation insert significantly reduces the overall costs. In addition, this enables a quick change of insulating rings.
  • the receiver also protects the thermally insulating insulating rings from “impregnation” with release agents, so that the risk of cracks is further reduced and unnecessary release agent consumption is avoided.
  • a graphite insert is arranged below the hot head, the friction between the mold wall running surface and the solidifying metal is reduced in conjunction with the separating agent guided along the inner wall thereof; indirect cooling is also used in this area reduced, which has an even better surface quality of the cast strand.
  • the device is designed for casting round bars.
  • the cast strand (not shown) slides along the inner lateral surface 1 of the mold 1 before it comes into contact with coolant KM, which emerges from the coolant 1 through the coolant supply channel 16 from a coolant supply chamber 15.
  • the coolant storage chamber 15 of the mold 1 is also limited by the device parts 12, 13 and 14; the annular device part 14 is provided with an opening 17 for supplying coolants KM.
  • the mold 1 is turned out above the inner circumferential surface 1 a, specifically for receiving a shrunk-in annular insert 2 made of graphite and for receiving the insulating attachment or insert serving as a hot head.
  • This insulating attachment is formed by the essentially tubular sensor 4, which has a collar 4a at the bottom, on which the lower of the four insulating rings 3 is supported.
  • the insulating rings 3 are held together between this collar 4a and the clamping ring 9, which is clamped with the aid of a torque wrench in the axial direction onto the insulating rings 3, which are made of ceramic material. After unscrewing the clamping ring 9, the insulating rings 3 can be removed from the tubular sensor 4 and exchanged.
  • the outer circumferential surface 4b of the transducer 4 is located at a radial distance from the inner circumferential surface 1b of the mold 1, so that an annular connecting line 10 results between the separating agent chamber 6 and the area which is between the lower part of the connecting line 10 and the lower one Draws part of the lowest insulating ring 3 or the upper part of the insert 2 made of graphite.
  • the feed channel 18 - in reality consisting of an abundance of individual labyrinth-like tubules - is formed by the unevenness and depressions on the underside of the granular surface 7a of the insert 7 consisting of emery paper, which on the underside by means of the adhesive on the back 7b of the transducer 4 is also glued in the area of its collar 4a.
  • the release agent which in particular should also have lubricant properties, is filled into the release agent chamber 6 via the opening 5, so that the gravity of the liquid column of the release agent above the insert 7 drives the release agent in a metered manner radially inward through the feed channel 18.
  • the insert 7 therefore serves at the same time as a kind of “distributor ring” for the uniform supply of release agents to all the outer surfaces of the casting strand.
  • the opening 5 is closed and the sealing ring 8, in particular an O-ring, prevents separating agent from passing out of the gap between the receiver 4 and the mold 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
EP85107527A 1984-07-03 1985-06-18 Vorrichtung zum Stranggiessen von Metallen Expired EP0167056B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85107527T ATE31644T1 (de) 1984-07-03 1985-06-18 Vorrichtung zum stranggiessen von metallen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843424457 DE3424457A1 (de) 1984-07-03 1984-07-03 Vorrichtung zum stranggiessen von metallen
DE3424457 1984-07-03

Publications (3)

Publication Number Publication Date
EP0167056A2 EP0167056A2 (de) 1986-01-08
EP0167056A3 EP0167056A3 (en) 1986-10-08
EP0167056B1 true EP0167056B1 (de) 1988-01-07

Family

ID=6239732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85107527A Expired EP0167056B1 (de) 1984-07-03 1985-06-18 Vorrichtung zum Stranggiessen von Metallen

Country Status (3)

Country Link
EP (1) EP0167056B1 (enrdf_load_stackoverflow)
AT (1) ATE31644T1 (enrdf_load_stackoverflow)
DE (2) DE3424457A1 (enrdf_load_stackoverflow)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO894914L (no) * 1988-12-08 1990-06-11 Alcan Int Ltd Smoering av former ved kontinuerlig stoeping.
US5033535A (en) * 1990-03-26 1991-07-23 Alcan International Limited Lubrication system for casting moulds
DE4212531C1 (de) * 1992-04-15 1993-10-21 Vaw Ver Aluminium Werke Ag Gas- und Trennmittelzuführungs- und Verteilungssystem für eine Vorrichtung zum Stranggießen
NO300411B1 (no) * 1995-05-12 1997-05-26 Norsk Hydro As Stöpeutstyr
EP0811446B1 (de) * 1996-06-06 1999-09-08 Alusuisse Technology & Management AG Stranggusskokille
US5873405A (en) * 1997-06-05 1999-02-23 Alcan International Limited Process and apparatus for direct chill casting
US6397925B1 (en) * 1998-03-05 2002-06-04 Honda Giken Kogyo Kabushiki Kaisha Agitated continuous casting apparatus
DE10113345A1 (de) * 2001-03-20 2002-09-26 Sms Demag Ag Stranggießkokille für flüssige Metalle, insbesondere für flüssigen Stahl
DE20109670U1 (de) * 2001-06-12 2001-08-30 Silca Service- und Vertriebsgesellschaft für Dämmstoffe mbH, 40822 Mettmann Selbstzentrierender Heißkopfring

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1061459A (en) * 1964-12-02 1967-03-15 Aluminium Lab Ltd Improvements in or relating to continuous casting of metals
CH451416A (de) * 1965-07-24 1968-05-15 Vaw Ver Aluminium Werke Ag Verfahren zur Zuführung des Schmiermittels beim vollkontinuierlichen Giessen von Metallen in stationären Kokillen
DE2525483B2 (de) * 1975-06-07 1978-11-23 Vereinigte Aluminium-Werke Ag, 5300 Bonn Verfahren zum Schmieren von Heißkopfstranggießkokillen

Also Published As

Publication number Publication date
EP0167056A3 (en) 1986-10-08
EP0167056A2 (de) 1986-01-08
DE3561290D1 (en) 1988-02-11
DE3424457C2 (enrdf_load_stackoverflow) 1989-05-24
DE3424457A1 (de) 1986-01-16
ATE31644T1 (de) 1988-01-15

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