FR2342112A1 - Continuously casting metals, esp. aluminium and its alloys at high spe - by partial heat extn. from melt before it enters mould (NL 26.8.77) - Google Patents

Continuously casting metals, esp. aluminium and its alloys at high spe - by partial heat extn. from melt before it enters mould (NL 26.8.77)

Info

Publication number
FR2342112A1
FR2342112A1 FR7704838A FR7704838A FR2342112A1 FR 2342112 A1 FR2342112 A1 FR 2342112A1 FR 7704838 A FR7704838 A FR 7704838A FR 7704838 A FR7704838 A FR 7704838A FR 2342112 A1 FR2342112 A1 FR 2342112A1
Authority
FR
France
Prior art keywords
nozzle
melt
mould
stirrer
heat
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Withdrawn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
FR7704838A
Other languages
French (fr)
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.)
Alcan Holdings Switzerland AG
Original Assignee
Alusuisse Holdings 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 Alusuisse Holdings AG filed Critical Alusuisse Holdings AG
Publication of FR2342112A1 publication Critical patent/FR2342112A1/en
Withdrawn legal-status Critical Current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
    • B22D11/16—Controlling or regulating processes or operations
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/112—Treating the molten metal by accelerated cooling
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/114—Treating the molten metal by using agitating or vibrating means

Abstract

Molten metals, esp. Al or its alloys, are continuously cast in a mould to produce billets or strip. The molten metal flows through a nozzle fitted with a rotating stirrer, and part of the heat in the melt is extracted in the nozzle before the melt enters the mould. The stirrer can pref. be adjusted along the axis of the nozzle to control the flow of the melt through the nozzle, and the temp. of the melt is pref. adjusted so it is in a partly solidified state when it leaves the nozzle. The pref. plant includes a vessel or gutter with a refractory lining and an outlet nozzle with a tapered bore contg. a conical stirrer, and the nozzle is surrounded by a heat exchanger. The height of the stirrer can be adjusted to control the width of an annular gap in the nozzle through which the melt flows. Induction coils may be located round the nozzles to provide stirring. In conventional casting plant, heat is extracted in the mould to reduce the temp. of the melt to the liquidus and then to cause solidification, so the rate of casting is relatively slow. The invention extracts part of the heat in a nozzle before the melt enters the mould, so casting speeds can be increased by up to 100%; shrinkage, fissure formation and grain size are all reduced, so the properties of the casting are improved.
FR7704838A 1976-02-24 1977-02-18 Continuously casting metals, esp. aluminium and its alloys at high spe - by partial heat extn. from melt before it enters mould (NL 26.8.77) Withdrawn FR2342112A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH224576 1976-02-24

Publications (1)

Publication Number Publication Date
FR2342112A1 true FR2342112A1 (en) 1977-09-23

Family

ID=4229247

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7704838A Withdrawn FR2342112A1 (en) 1976-02-24 1977-02-18 Continuously casting metals, esp. aluminium and its alloys at high spe - by partial heat extn. from melt before it enters mould (NL 26.8.77)

Country Status (5)

Country Link
BR (1) BR7700951A (en)
DE (1) DE2707774A1 (en)
FR (1) FR2342112A1 (en)
NL (1) NL7700977A (en)
NO (1) NO770606L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0476843A1 (en) * 1990-09-11 1992-03-25 Rheo-Technology, Ltd Process for the production of semi-solidified metal composition

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8001285L (en) * 1979-02-26 1980-08-27 Itt DEVICE FOR THE PREPARATION OF TIXOTROPIC METAL SLUPS
US4465118A (en) * 1981-07-02 1984-08-14 International Telephone And Telegraph Corporation Process and apparatus having improved efficiency for producing a semi-solid slurry
US4457354A (en) * 1981-08-03 1984-07-03 International Telephone And Telegraph Corporation Mold for use in metal or metal alloy casting systems
US4415374A (en) 1982-03-30 1983-11-15 International Telephone And Telegraph Corporation Fine grained metal composition
US4524820A (en) * 1982-03-30 1985-06-25 International Telephone And Telegraph Corporation Apparatus for providing improved slurry cast structures by hot working
US4482012A (en) * 1982-06-01 1984-11-13 International Telephone And Telegraph Corporation Process and apparatus for continuous slurry casting
AT387165B (en) * 1984-06-26 1988-12-12 Ver Edelstahlwerke Ag DEVICE FOR CONTINUOUSLY METALLIC MELTING
ATE71004T1 (en) * 1986-11-26 1992-01-15 Centre Rech Metallurgique DEVICE FOR CASTING A PASTE METAL.
GB8802456D0 (en) * 1988-02-04 1988-03-02 British Steel Corp Liquid metal processing
FR2634677B1 (en) * 1988-07-07 1990-09-21 Pechiney Aluminium PROCESS FOR THE MANUFACTURE BY CONTINUOUS CASTING OF THIXOTROPIC METAL PRODUCTS
DE19504009A1 (en) * 1995-02-08 1996-08-14 Vaw Ver Aluminium Werke Ag Infeed system for an aluminum continuous casting plant
DE10212501A1 (en) * 2002-03-20 2003-10-02 Rauch Fertigungstech Gmbh Melting container, in particular tundish

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0476843A1 (en) * 1990-09-11 1992-03-25 Rheo-Technology, Ltd Process for the production of semi-solidified metal composition
US5144998A (en) * 1990-09-11 1992-09-08 Rheo-Technology Ltd. Process for the production of semi-solidified metal composition

Also Published As

Publication number Publication date
NL7700977A (en) 1977-08-26
DE2707774A1 (en) 1977-09-01
NO770606L (en) 1977-08-25
BR7700951A (en) 1977-10-18

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Legal Events

Date Code Title Description
ST Notification of lapse