EP0009603B1 - Procédé et dispositif pour la fabrication de bandes métalliques - Google Patents

Procédé et dispositif pour la fabrication de bandes métalliques Download PDF

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Publication number
EP0009603B1
EP0009603B1 EP79103096A EP79103096A EP0009603B1 EP 0009603 B1 EP0009603 B1 EP 0009603B1 EP 79103096 A EP79103096 A EP 79103096A EP 79103096 A EP79103096 A EP 79103096A EP 0009603 B1 EP0009603 B1 EP 0009603B1
Authority
EP
European Patent Office
Prior art keywords
cooling body
jet
molten metal
relative movement
reservoir
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
EP79103096A
Other languages
German (de)
English (en)
Other versions
EP0009603A1 (fr
Inventor
Hans-Reiner Dr. Hilzinger
Hans Dr. Hillmann
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.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Vacuumschmelze GmbH and Co KG
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
Priority claimed from DE19782842421 external-priority patent/DE2842421C2/de
Priority claimed from DE19782846628 external-priority patent/DE2846628C2/de
Application filed by Vacuumschmelze GmbH and Co KG filed Critical Vacuumschmelze GmbH and Co KG
Priority to AT79103096T priority Critical patent/ATE1086T1/de
Publication of EP0009603A1 publication Critical patent/EP0009603A1/fr
Application granted granted Critical
Publication of EP0009603B1 publication Critical patent/EP0009603B1/fr
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C45/00—Amorphous alloys
    • 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0611—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a single casting wheel, e.g. for casting amorphous metal strips or wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/10—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying using centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Definitions

  • the invention relates to a method for producing metal strips, in particular from an amorphous metal alloy, wherein a jet of the molten metal hits the rapidly moving surface of a heat sink and solidifies there, and a device for carrying out this method.
  • metal strips with an amorphous structure are produced by quenching a corresponding melt so quickly, typically at a cooling rate of about 10 6 ° C./s, that solidification occurs without crystallization.
  • cooling surfaces for the jet of molten metal can. serve, for example, the inner or outer surface of a rotating roller or an endlessly rotating belt.
  • the thickness of the strips obtained in this way can be, for example, a few hundredths of a millimeter, the width can be a few millimeters (see, for example, US Pat. No. 905,758, DE-A-26 06 581, DE-A-27 19 710 and DE-A-27 46 238).
  • an increasing waviness of the heat sink surface occurs after a short operating time, which is noticeable as a surface irregularity, such as depressions and increased roughness, on the belt surface.
  • the invention has for its object to reduce the heat load of the heat sink in a method of the type mentioned. At the same time, the surface quality of the strips produced is to be improved and premature breaking due to embrittlement is to be avoided.
  • melt jet and heat sink are additionally moved relative to one another transversely to the direction of the melt jet and transversely to the direction of movement of the heat sink.
  • a device for carrying out the method according to the invention with a heat sink, the surface of which rotates around at least one axis, and a storage container for the molten metal alloy can be designed accordingly in such a way that the storage container and heat sink relative to one another transversely to the direction of the melt jet emerging from the storage container and transversely to Direction of movement of the heat sink are displaceable.
  • the heat sink is preferably a rapidly rotating cooling roller, since it is particularly easy to handle and has a relatively large mass. In the case of prolonged operation, it may be advantageous to provide additional cooling of the cooling roll. To do this, it is sufficient to direct an inert gas or air flow against the surface of the rotating cooling roll.
  • the cooling roller preferably consists of this material because of the high thermal conductivity of pure copper.
  • the cooling roller can also consist of any other material with a relatively high thermal conductivity, such as copper-beryllium or steel alloys.
  • Typical speeds for the longitudinal movement of the cooling surface of a cooling roll are generally in the range from about 10 to 60 m / s. However, a lower speed of the heat sink is generally sufficient for the production of metal strips with a polycrystalline structure.
  • the preferred speed of the relative movement between the melt jet and the cooling roll depends on the width of the metal strip produced.
  • a speed in the range between 1 mm / s and 5 cm / s is particularly suitable for narrow strips, for example up to a maximum width of 10 mm, while speeds of 5 cm / s to 30 cm / s can be used particularly advantageously with wider strips . If, on the other hand, you are working in the production of very narrow strips at a speed of Relative movement in the range of 5 to 30 cm / s, there is a risk that the bands are curved like a saber.
  • the relative speed is therefore preferably at least two orders of magnitude lower than the surface speed of the heat sink.
  • the molten jet can repeatedly drive over as large a surface area of the moving heat sink as possible, particularly in the case of larger amounts of melt, it is also advantageous if means are provided for periodically changing the direction of the relative movement.
  • correspondingly arranged electrical contacts can reverse the direction of movement when the melt jet approaches an end of the region.
  • the maximum range for the relative movement of the melt jet transverse to its direction of flow is limited by the width of the heat sink surface. However, it will generally be chosen to be somewhat smaller.
  • the method according to the invention can be carried out in a manner known per se in air, in an inert atmosphere, for example nitrogen or argon, or under vacuum.
  • an improved uniformity of the metal strip produced can be achieved because the oxidizing attack of the atmospheric oxygen is switched off.
  • the device can therefore advantageously have a vacuum chamber in which the reservoir for the melt and the heat sink are arranged.
  • the storage container 15 containing the molten metal and the moving cooling roller 11 are arranged in a vacuum chamber 10 which is connected to a vacuum pump by a feed, not shown.
  • the cooling roller 11 is driven via a shaft 12 by an electric motor 14 with speed control located outside the vacuum chamber.
  • a corresponding rotary leadthrough into the interior of the vacuum chamber is designated by 13.
  • the storage container 15, which is surrounded by an induction heating winding 16, is mounted on a subframe 17 which can move on guide rails 18 transversely to the longitudinal direction of the storage container.
  • the subframe 17 is driven via a drive spindle 19 by an electric motor 20 which is also located outside the vacuum chamber 10.
  • the respective direction of movement of the subframe 17 can be reversed, contacts 22 triggering a change in the direction of rotation of the electric motor 20 .
  • an opening 23 for example a nozzle, at the lower end of the supply. container 15, the melt stream of the liquid metal can escape and then hit the surface of the rotating cooling roller 11, where it solidifies into a continuous belt.
  • an alloy of the composition Fe 4, N 'was 40 p B I4, are used whose melting temperature is about 950 ° C and their crystallization temperature at about 360 ° C.
  • the melt in the quartz storage tank was increased to approximately by an induction heating winding. Heated 1000 ° C and then pressed through a nozzle.
  • the molten jet of this alloy hit the surface of a rapidly rotating chill roll made of oxygen-free copper, where it solidified into a solid band.
  • the longitudinal speed of the cooling roll surface was set at about 30 m / s. During the outflow, the molten jet was moved transversely to its outflow direction.
  • the maximum deflection of this movement was approximately 15 cm.
  • the speed of the melt jet moving relative to the rotating cooling roll was set at 15 cm / s.
  • the amorphous metal strip produced by the described method was 5 mm wide and had a uniform surface without any ripple.
  • the width of the metal strip to be produced should be covered in about 0.2 to 1 s by the relative movement of the melt jet to the heat sink.
  • speeds of the relative movement of 1 to 5 mm / s are advantageous for bands of 1 mm width and speeds of the relative movement of between 1 and 5 cm / s are advantageous for bands of 10 mm width.
  • the method and the device according to the invention are particularly suitable for metal alloys which, after rapid cooling from the melt, have an amorphous structure. Since these alloys are metastable, a reduced cooling rate due to increasing heating of the surface of the heat sink to a temperature near or above the so-called critical crystallization temperature inevitably leads to the embrittlement of the strips.
  • the method according to the invention and the audible device can also be applied to polycrystalline metal alloys if the advantage of strip production directly from the melt is also important.
  • the device according to the invention can also be modified in a manner known per se by using the inside of a rotating roller, two counter-rotating rollers or an endlessly rotating belt as the heat sink.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)

Claims (13)

1. Procédé pour la fabrication de bandes métalliques, en particulier en métal amorphe, par lequel un jet de métal en fusion sortant d'un récipient de réserve (15) rencontre la surface en déplacement rapide d'un corps refroidissant (11) et s'y solidifie, procédé caractérisé en ce que le jet de masse en fusion et le corps refroidissant (11) sont déplacés supplémentairement l'un par rapport à l'autre, transversalement à la direction du jet de masse en fusion et transversalement à la direction du déplacement du corps refroidissant (11).
2. Procédé suivant la revendication 1 caractérisé en ce que la direction du déplacement relatif supplémentaire est changée périodiquement.
3. Procédé suivant l'une des revendications 1 et 2, caractérisé en ce que le jet de masse en fusion est déplacé.
4. Procédé suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que la vitesse de déplacement relatif s'élève au maximum à un centième de la vitesse superficielle du corps refroidissant (11).
5. Procédé suivant l'une quelconque des revendications 1 à 4, caractérisé en ce que la largeur de la bande métallique à fabriquer est balayée en environ 0,2 à 1 s par le déplacement relatif du jet de masse en fusion par rapport au corps refroidissant (11).
6. Procédé suivant la revendication 5, caractérisé en ce que la vitesse du déplacement relatif est choisie entre 1 mm/s et 5 cm/s.
7. Procédé suivant la revendication 5, caractérisé en ce que la vitesse du déplacement relatif se monte à 5 à 30 cm/s.
8. Installation pour l'application du procédé suivant l'une quelconque des revendications 1 à 7, comportant un corps refroidissant (11) dont la surface tourne autour d'au moins un axe, et un récipient de réserve (15) d'alliage métallique rendu liquide par fusion, installation caractérisé en ce que le récipient de réserve (15) et le corps refroidissant (11) peuvent se déplacer l'un par rapport à l'autre, transversalement à la direction du jet de masse en fusion sortant du récipient de réserve (15) et transversalement au sens de mouvement du corps refroidissant (11). ).
9. Installation suivant la revendication 8, caractérisé en ce que le récipient de réserve (15) est mobile par rapport au corps refroidissant (11) monté fixe.
10. Installation suivant l'une des revendications 8 et 9, caractérisée en ce que l'on prévoit comme corps refroidissant (11) un tambour.
11. Installation suivant la revendication 10, caractérisé en ce que le tambour refroidissant est constitué en cuivre fortement conducteur de la chaleur.
12. Installation suivant l'une quelconque des revendications 8 à 11, caractérisée en ce que le sens du déplacement relatif est inversé périodiquement.
13. Installation suivant l'une quelconque des revendications 8 à 12, caractérisée en ce que le récipient de réserve (15) et le corps refroidissant (11) sont placés dans une chambre à vide (10).
EP79103096A 1978-09-29 1979-08-23 Procédé et dispositif pour la fabrication de bandes métalliques Expired EP0009603B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79103096T ATE1086T1 (de) 1978-09-29 1979-08-23 Verfahren und vorrichtung zur herstellung von metallbaendern.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19782842421 DE2842421C2 (de) 1978-09-29 1978-09-29 Verfahren und Vorrichtung zur Herstellung von Metallbändern
DE2842421 1978-09-29
DE19782846628 DE2846628C2 (de) 1978-10-26 1978-10-26 Verfahren zur Herstellung von Metallbändern
DE2846628 1978-10-26

Publications (2)

Publication Number Publication Date
EP0009603A1 EP0009603A1 (fr) 1980-04-16
EP0009603B1 true EP0009603B1 (fr) 1982-05-26

Family

ID=25775884

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79103096A Expired EP0009603B1 (fr) 1978-09-29 1979-08-23 Procédé et dispositif pour la fabrication de bandes métalliques

Country Status (4)

Country Link
US (1) US4293023A (fr)
EP (1) EP0009603B1 (fr)
CA (1) CA1129169A (fr)
DE (1) DE2962959D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6024247A (ja) * 1983-07-18 1985-02-06 Unitika Ltd 液体急冷金属製品の連続製造方法
FR2700282B1 (fr) * 1993-01-13 1995-03-03 Seva Procédé et installation de fabrication de rubans métalliques amorphes par hypertrempe.
FR2732628B1 (fr) * 1995-04-05 1997-05-30 Seva Installation et procede de fabrication de ruban ou de fibre metallique amorphe par hypertrempe
JP2007111711A (ja) * 2005-10-18 2007-05-10 Denso Corp 箔ろう材の製造方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899728A (en) * 1959-08-18 Method and apparatus for forming metal
US3297436A (en) * 1965-06-03 1967-01-10 California Inst Res Found Method for making a novel solid metal alloy and products produced thereby
GB1549124A (en) * 1976-05-04 1979-08-01 Allied Chem Chill roll castin of continuous filament
US4077462A (en) * 1976-06-30 1978-03-07 Allied Chemical Corporation Chill roll casting of continuous filament
AU503857B2 (en) * 1976-10-22 1979-09-20 Allied Chemical Corp. Continuous casting of metal strip
DE2809837A1 (de) * 1977-03-07 1978-09-21 Furukawa Electric Co Ltd Verfahren zur herstellung amorpher metallbaender
FR2393635A1 (fr) * 1977-06-06 1979-01-05 Michelin & Cie Procede de fabrication de fil metallique ondule pour armer des materiaux composites
JPS6038225B2 (ja) * 1977-09-12 1985-08-30 ソニー株式会社 非晶質合金の製造方法

Also Published As

Publication number Publication date
EP0009603A1 (fr) 1980-04-16
DE2962959D1 (en) 1982-07-15
US4293023A (en) 1981-10-06
CA1129169A (fr) 1982-08-10

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