EP0280765A3 - Method of and installation for producing castings from pressure treated melts from steel alloys - Google Patents

Method of and installation for producing castings from pressure treated melts from steel alloys Download PDF

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Publication number
EP0280765A3
EP0280765A3 EP87114822A EP87114822A EP0280765A3 EP 0280765 A3 EP0280765 A3 EP 0280765A3 EP 87114822 A EP87114822 A EP 87114822A EP 87114822 A EP87114822 A EP 87114822A EP 0280765 A3 EP0280765 A3 EP 0280765A3
Authority
EP
European Patent Office
Prior art keywords
melt
casting
pressure
mould
substance
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.)
Granted
Application number
EP87114822A
Other languages
German (de)
Other versions
EP0280765A2 (en
EP0280765B1 (en
Inventor
Wolfgang Dipl.-Ing. Dr. Holzgruber
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.)
Inteco Internationale Techinsche Beratung GmbH
Original Assignee
Inteco Internationale Techinsche Beratung GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3491268&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0280765(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Inteco Internationale Techinsche Beratung GmbH filed Critical Inteco Internationale Techinsche Beratung GmbH
Publication of EP0280765A2 publication Critical patent/EP0280765A2/en
Publication of EP0280765A3 publication Critical patent/EP0280765A3/en
Application granted granted Critical
Publication of EP0280765B1 publication Critical patent/EP0280765B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
    • B22D27/13—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure making use of gas pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • 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
    • B22D11/113—Treating the molten metal by vacuum treating
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0081—Treating and handling under pressure

Abstract

A method of producing castings, such as blocks, billets or dead-mould castings from metals, in particular steel and steel-like alloys, which have higher proportions of elements with high vapour pressure or gases than at atmospheric pressure in the molten state and remain in solution during solidification is to be improved by virtue of the fact that a melt produced in an open melting unit is poured first of all under atmospheric pressure into a refractory-lined, heatable treatment vessel, a gas pressure above atmospheric pressure is then built up over the melt and is maintained during the entire heating and treatment time, the melt is continuously stirred and/or flushed by means of gas and, either by flushing with the elements or substances in the gaseous state and/or by the addition of alloys containing the element or substance, is brought to the desired content of this element or substance, the gas pressure above the melt corresponding at least to the partial pressure of the corresponding element or substance, which partial pressure is in equilibrium with the desired content of the melt, and that the melt, after the composition and the casting temperature are set, is poured directly from the treatment vessel via a closure and casting element which can be closed and opened in a suitable manner into an ingot mould, likewise under pressure, a ceramic or metallic casting mould or a continuous-casting ingot mould, or that the melt is pushed directly into a casting mould according to the die casting method by increasing the pressure above the melt, and the casting thus formed is left to solidify.
EP87114822A 1987-03-03 1987-10-10 Method of and installation for producing castings from pressure treated melts from steel alloys Expired - Lifetime EP0280765B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT46287 1987-03-03
AT462/87 1987-03-03

Publications (3)

Publication Number Publication Date
EP0280765A2 EP0280765A2 (en) 1988-09-07
EP0280765A3 true EP0280765A3 (en) 1989-03-08
EP0280765B1 EP0280765B1 (en) 1991-12-27

Family

ID=3491268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87114822A Expired - Lifetime EP0280765B1 (en) 1987-03-03 1987-10-10 Method of and installation for producing castings from pressure treated melts from steel alloys

Country Status (3)

Country Link
EP (1) EP0280765B1 (en)
AT (1) ATE70751T1 (en)
DE (2) DE3775546D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5004495A (en) * 1990-02-05 1991-04-02 Labate M D Method for producing ultra clean steel
DE19505743A1 (en) * 1995-02-20 1996-08-22 Inteco Int Techn Beratung Process and plant for producing blocks from metals
DE19807623A1 (en) * 1998-02-21 1999-08-26 Georg Fischer Disa Ag Low pressure casting process for light metals, especially aluminum
DE102014110251A1 (en) * 2014-07-21 2016-01-21 Stephan Schwenkel Melting unit for melting casting materials and a method for producing a melt for casting

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1236543B (en) * 1961-10-13 1967-03-16 Wilhelm Stich Dipl Ing Dr Tech Process for high pressure heat treatment of steel produced in a vacuum
DE3232551A1 (en) * 1981-12-01 1983-06-09 Iso "Metalurgkomplekt", Sofija METHOD AND DEVICE FOR TREATING AND REFINING LIQUID METAL ALLOYS BY MEANS OF DC-ARC HEATING
EP0094334A1 (en) * 1982-05-07 1983-11-16 Paul Metz Device for the metallurgical treatment of liquid metals

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1236543B (en) * 1961-10-13 1967-03-16 Wilhelm Stich Dipl Ing Dr Tech Process for high pressure heat treatment of steel produced in a vacuum
DE3232551A1 (en) * 1981-12-01 1983-06-09 Iso "Metalurgkomplekt", Sofija METHOD AND DEVICE FOR TREATING AND REFINING LIQUID METAL ALLOYS BY MEANS OF DC-ARC HEATING
EP0094334A1 (en) * 1982-05-07 1983-11-16 Paul Metz Device for the metallurgical treatment of liquid metals

Also Published As

Publication number Publication date
DE3775546D1 (en) 1992-02-06
ATE70751T1 (en) 1992-01-15
EP0280765A2 (en) 1988-09-07
DE3734406A1 (en) 1988-09-15
EP0280765B1 (en) 1991-12-27

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