EP0264418B1 - Kontinuierlicher herstellung von legierungen - Google Patents

Kontinuierlicher herstellung von legierungen Download PDF

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Publication number
EP0264418B1
EP0264418B1 EP87902638A EP87902638A EP0264418B1 EP 0264418 B1 EP0264418 B1 EP 0264418B1 EP 87902638 A EP87902638 A EP 87902638A EP 87902638 A EP87902638 A EP 87902638A EP 0264418 B1 EP0264418 B1 EP 0264418B1
Authority
EP
European Patent Office
Prior art keywords
alloy
metal
alloying
molten
basic
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 - Lifetime
Application number
EP87902638A
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English (en)
French (fr)
Other versions
EP0264418A1 (de
Inventor
Brian Maddock
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.)
Alform Alloys Ltd
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Alform Alloys Ltd
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Filing date
Publication date
Application filed by Alform Alloys Ltd filed Critical Alform Alloys Ltd
Priority to AT87902638T priority Critical patent/ATE70088T1/de
Publication of EP0264418A1 publication Critical patent/EP0264418A1/de
Application granted granted Critical
Publication of EP0264418B1 publication Critical patent/EP0264418B1/de
Anticipated expiration legal-status Critical
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/026—Alloys based on aluminium

Definitions

  • the present invention relates to an apparatus for the continuous production of alloys and in particular, though not exclusively, to the production of aluminium alloy continuously.
  • Molten aluminium alloy is used in a variety of production methods, for example in continuous casting and to supply a "Conform"® extruder.
  • a furnace full of pure aluminium is melted, and the molten aluminium doped with the necessary quantities of alloying metals to produce a desired alloy formulation.
  • As a method of producing a large quantity of molten aluminium alloy method is reasonably satisfactory.
  • it is quite common to only want to produce a relatively small quantity of a finished product of a particular alloy for example when using a Conform extruder.
  • the practice in the past has been to produce a furnace full of the desired molten alloy and to use as much as is necessary for a production run and then to discard the rest, with only a limited possibility of recycling.
  • This known technique has resulted in a considerable waste of alloy, and consequently increased the expense of small scale production of products of a particular alloy, to the extent that it may not be worthwhile making only small amounts of a product.
  • GB-2000195A discloses a process for the continuous production of molten metal alloy comprising a furnace for melting a basic metal of the alloy, means for receiving a controlled supply of molten metal from the furnace means for supplying controlled amounts of at least one alloying metal to the molten metal in the receiving means for combining with the basic metal of the alloy to form a controlled supply of the desired alloy and a feed back control system arranged to control the means for controlling the supply of alloying metal in accordance with data indicative of the composition of the desired alloy.
  • the feedback control system takes samples of the desired molten alloy for analysis during production in order to provide the data indicative of the composition of the desired alloy.
  • the present invention seeks to provide an apparatus for the production of molten alloy metals in controllable quantities.
  • an apparatus for the continuous production of metal alloy bar from continuously produced molten metal alloy comprising; a furnace for melting a basic metal of the alloy, means for receiving a controlled supply of molten metal from the furnace, means for supplying controlled amounts of at least one alloying metal to the molten metal in the receiving means for combining with the basic metal of the alloy to form a controlled supply of the desired alloy, a feedback control system arranged to control the means for supplying alloying metal in accordance with data indicative of the composition of the desired alloy, means to continuously form an elongate bar from the supply of the desired alloy, the control system being responsive to sensor means arranged to sense the speed of production of the bar characterised in that the sensor means is provided by a sensor which senses the cross-sectional area of the output bar a and speed sensor which senses the speed of the output bar.
  • the advantage of the apparatus mentioned above is derived from measuring the speed of production or outflow rate of the desired alloy from the solidified bar.
  • the sensors can sense the outflow rate without being susceptible to surges in the molten alloy.
  • the sensors can be compact and relatively accessible for maintenance purposes.
  • a valve controls the flow of the molten metal from the furnace and the valve assembly forms part of the receiving means and the alloying metal is introduced into the basic metal flowing through the valve, and together they are supplied to an alloying chamber where the alloy is temporarily contained to allow the alloying elements to diffuse uniformly through the basic molten metal.
  • the alloying metal(s) can be held in a "master" alloy of the basic metal with high concentration(s) of the alloying metal(s).
  • Figure 1 shows a preferred embodiment of the invention, wherein a molten aluminium alloy is produced and supplied to a "Conform" extruding apparatus.
  • a furnace 1 is connected through a mixing and flow control valve 2 to an alloying chamber 3, which valve has an upperr port 2a.
  • a conveying apparatus 4 is arranged to supply a molten alloy from the alloying chamber 3 into a Conform apparatus 5.
  • a sluice gate 6 controls run-off from the alloying chamber 3 to a run-off 7.
  • aluminium A is melted in the furnace 1 and rung into the mixing control valve 2.
  • a "Master Alloy” B in rod form is also supplied into the mixing control valve 2 through port 2a, to be melted by the molten aluminium A.
  • the molten alloy mixture runs into the alloying chamber 3 where the alloying metals in the "Master Alloy” diffuse throughout the basic aluminium metal to produce a consistent alloy of desired composition.
  • the "Master Alloy” rod B is of known alloy composition and is continuously fed into the mixing control valve 2 to produce the desired output alloy.
  • the feeding of the "Master Alloy" B is controlled by a pair of rollers 10.
  • the speed of rotation of the rollers 10 is controlled by a control circuit 20.
  • a sensor 8 detects the area of the extrusion output from the Conform extruder 5 to provide an area input A to control circuit 20 and a speed sensor 9 provides an input V related to the speed of production of the extrusion material.
  • the control circuit 20 is supplied with input data giving the required alloy composition and the composition of the master alloy B which is to be added to the basic molten aluminium A. From the data supplied thte control circuit 20 controls the feed rolls 10 to provide the maste alloy rod at an appropriate rate to produce the desired output alloy.
  • valve 2 At termination of extrusion with a particular alloy the valve 2 is closed shutting off flow of aluminium from the furnace 1 and the master alloy B is no longer supplied. The remaining, relatively small quantity of alloy in the mixing control valve 2 and alloying chamber 3 is run-off through run-off 7 by opening the sluice gate 6. It will be appreciated that only a relatively small volume of alloy is run-off. Production of an alloy of differing composition can then begin, with the appropriate data being provided to the control circuit 20.
  • the control circuit 20 is supplied with data such as:-
  • wire or pellets would be added at the rate of 192 grams per minute to create 6063 from high purity aluminium.
  • control system would reduce the master alloy rod speed to 0.98 m/min to maintain the correct alloy composition.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Contacts (AREA)

Claims (2)

1. Vorrichtung zur kontinuierlichen Herstellung einer Metalllegierungsstange aus einer kontinuierlich hergestellten Metalllegierungsschmelze, mit einem Ofen (1) zum Schmelzen des Basismetalls der Legierung, Mitteln (2) zur Aufnahme eines geregelten Vorrats der Metallschmelze aus dem Ofen, Mitteln (10) für die Zuführung geregelter Mengen wenigstens eines Legierungsmetalls zu der Metallschmelze in den Aufnahmemitteln (2) zwecks Vereinigung mit dem Basismetall der Legierung unter Bildung eines geregelten Vorrats der gewünschten Legierung, einem Rückführregelsystem zur Regelung der Mittel (10) für die Zuführung von Legierungsmetall gemäß den Anzeigedaten der Zusammensetzung der gewünschten Legierung und Mitteln (5) zur kontinuierlichen Bildung einer länglichen Stange aus dem Vorrat der gewünschten Legierung, wobei das Regelsystem auf Fühlereinrichtungen (8,9) zur Ermittlung der Bildungsgeschwindigkeit der Stange anspricht, dadurch gekennzeichnet, daß die Fühlereinrichtungen (8,9) gebildet werden durch einen Fühler (8), der die Querschnittsfläche der Produktionsstange feststellt, und einen Geschwindigkeitsfühler (9), der die Geschwindigkeit der Produktionsstange feststellt.
2. Vorrichtung nach Anspruch 1, beider ein Ventil (2) den Strom der Basismetallschmelze aus dem Ofen (1) regelt, das Ventilaggregat einen Teil der Aufnahmemittel (2) bildet, das Legierungsmetall in das durch das Ventil (2) strömende Basismetall eingeführt wird und das Ventil (2) an eine Legierungskammer (3) angeschlossen ist, wo die Legierung zeitweilig verbleibt, damit die Legierungselemente gleichmäßig in die Basismetallschmelze eindiffundieren können.
EP87902638A 1986-05-01 1987-04-30 Kontinuierlicher herstellung von legierungen Expired - Lifetime EP0264418B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87902638T ATE70088T1 (de) 1986-05-01 1987-04-30 Kontinuierlicher herstellung von legierungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8610717 1986-05-01
GB868610717A GB8610717D0 (en) 1986-05-01 1986-05-01 Production of alloys

Publications (2)

Publication Number Publication Date
EP0264418A1 EP0264418A1 (de) 1988-04-27
EP0264418B1 true EP0264418B1 (de) 1991-12-04

Family

ID=10597207

Family Applications (2)

Application Number Title Priority Date Filing Date
EP87303902A Pending EP0244255A1 (de) 1986-05-01 1987-04-30 Kontinuierliche Herstellung von Legierungen
EP87902638A Expired - Lifetime EP0264418B1 (de) 1986-05-01 1987-04-30 Kontinuierlicher herstellung von legierungen

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP87303902A Pending EP0244255A1 (de) 1986-05-01 1987-04-30 Kontinuierliche Herstellung von Legierungen

Country Status (7)

Country Link
EP (2) EP0244255A1 (de)
JP (1) JPS63503229A (de)
AT (1) ATE70088T1 (de)
DE (1) DE3774995D1 (de)
ES (1) ES2028135T3 (de)
GB (1) GB8610717D0 (de)
WO (1) WO1987006623A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2779393B2 (ja) * 1988-02-10 1998-07-23 住友シチックス株式会社 高融点活性金属合金の溶解方法
WO1992015720A1 (en) * 1991-03-07 1992-09-17 Kb Alloys, Inc. Master alloy hardeners
DE19839670A1 (de) * 1998-09-01 2000-03-02 Induga Industrieoefen Und Gies Verfahren zur kontinuierlichen Herstellung von Metall-Legierungen
EP1111079A1 (de) * 1999-12-20 2001-06-27 Alcoa Inc. Übersättigte Aluminium-Legierung
JP7394017B2 (ja) * 2020-05-14 2023-12-07 Ｊｘ金属株式会社 金属合金の製造方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000195A (en) * 1977-06-02 1979-01-04 Alusuisse Process for the continuous production of metal alloys

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH553606A (de) * 1972-07-27 1974-09-13 Concast Ag Verfahren und einrichtung zum stranggiessen von metall mit gegenueber dem eingegossenen metall wesentlich geringerem spezifischem stranggewicht.
US4105438A (en) * 1977-04-19 1978-08-08 Sherwood William L Continuous metal melting, withdrawal and discharge from rotary furnaces
GB2069898A (en) * 1980-02-26 1981-09-03 Metal Research Corp Inoculation to a molten cast iron during pouring

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000195A (en) * 1977-06-02 1979-01-04 Alusuisse Process for the continuous production of metal alloys

Also Published As

Publication number Publication date
DE3774995D1 (de) 1992-01-16
WO1987006623A1 (en) 1987-11-05
ES2028135T3 (es) 1992-07-01
ATE70088T1 (de) 1991-12-15
EP0264418A1 (de) 1988-04-27
JPS63503229A (ja) 1988-11-24
EP0244255A1 (de) 1987-11-04
GB8610717D0 (en) 1986-06-04

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