EP0025098B1 - Procédé de coulée et dispositif avec surface de trempe extensible de manière continue - Google Patents

Procédé de coulée et dispositif avec surface de trempe extensible de manière continue Download PDF

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Publication number
EP0025098B1
EP0025098B1 EP19800104010 EP80104010A EP0025098B1 EP 0025098 B1 EP0025098 B1 EP 0025098B1 EP 19800104010 EP19800104010 EP 19800104010 EP 80104010 A EP80104010 A EP 80104010A EP 0025098 B1 EP0025098 B1 EP 0025098B1
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EP
European Patent Office
Prior art keywords
quench
quench surface
drive disk
wheel
radial
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
EP19800104010
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German (de)
English (en)
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EP0025098A1 (fr
Inventor
Seymour Draizen
Henry John Sossong
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.)
Allied Corp
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Allied Corp
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Publication date
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    • 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
    • B22D11/0637—Accessories therefor
    • B22D11/0648—Casting surfaces
    • B22D11/0651—Casting wheels
    • 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
    • B22D11/005—Continuous casting of metals, i.e. casting in indefinite lengths of wire

Definitions

  • This invention relates generally to the substantial reduction of thermal distortion of a continuous casting quench surface. Specifically, this invention provides for radially unrestrained thermal growth of a hoop-like quench surface of a quench wheel in the continuous casting of glassy alloy filaments.
  • the present invention substantially eliminates the problem of quench surface crowning in quench wheel continuous casting by providing for the unrestrained radial thermal growth of the hoop-like quench surface in a manner that also maintains concentrically of the quench surface with its shaft of rotation and further provides circumferential support against the torque loads of rotation so that the hot, expanded hoop-like quench surface does not slip on its underlying rotative drive disk.
  • the method of the invention for continuously casting metallic filaments, especially glassy alloy strips, by directing a stream of molten alloy onto a hoop-like quench surface of a rotating quench wheel, is characterized in that unrestrained radial thermal growth of the quench surface is allowed while maintaining its concentricity in a fixed angular relationship with the rotating quench wheel.
  • the apparatus of the invention for continuously casting metallic filaments by directing a stream of molten alloy onto a rotating quench surface, comprising a quench wheel having a rotative drive disk, about a shaft of rotation, concentrically supporting a hoop-like quench surface is characterized in that the apparatus has expansion means for allowing unrestrained radial thermal growth of the quench surface while maintaining its concentricity in a fixed angular relationship with the drive disk.
  • the expansion means preferably comprise at least three radial expansion joints connecting the quench surface and the drive disk, which are symmetrically situated with respect to the shaft of rotation. More preferably, six such expansion joints are utilized.
  • Fig. 1 typical prior art apparatus for the continuous casting of a glassy alloy filament is illustrated to point out the general use of the present invention.
  • the molten alloy is contained in a crucible 11 provided with a heating element 12. Pressurization of the crucible 11 with an inert gas causes a molten stream to be extruded through a nozzle 13 at the base of the crucible 11 onto a quench surface 14 of a rotating quench wheel 17.
  • the solidified, moving filament 16, after its break away point from the quench surface 14 is typically routed through a tension regulator and finally onto a winder (not shown).
  • the quench wheel is provided with conventional cooling means (not shown) for maintaining the quench surface at a substantially constant temperature during continuous casting, by contacting the quench surface with a cooling liquid or gas.
  • cooling liquid or gas For example, cooling water may be circulated through the interior of the quench wheel, or the quench surface may be ex- temally spray-cooled.
  • the quench surface is conventionally made of an alloy, such as beryllium copper, generally having most of the desired characteristics of high thermal conductivity, low thermal expansion, high abrasion resistance, and low chemical reactivity with and high wettability by the extruded melt. Additionally, the high conductivity quench surface may be thinly coated with a high melting ceramic or refractory alloy to improve wear resistance. Other components of the quench wheel may be of any conventional structural alloy, such as a high strength aluminum alloy.
  • a partial cross-section of the quench wheel 17 is shown to illustrate the problem of crowning or thermal-bowing of the quench surface 14.
  • the hoop-like quench surface 14 is attached to rotating drive disk 15 of the quench wheel 17 by conventional rigid joining means, such as a bolt 21.
  • the quench surface 14 at room temperature is desirably flat, but during operation a substantial temperature gradient is developed between the hot quench surface 14 and the cooler drive disk 15 as molten metal is extruded through nozzle 13 onto quench surface 14 to continuously cast filament 16.
  • thermal expansion causes the quench surface 15 to crown or bow to the position indicated by dashed line 14A, since the lateral edge of the surface is restrained by the cooler drive disk 15 and bolt 21.
  • the uniformity of the transverse cross-section of the cast filament 16 is adversely affected.
  • an embodiment of the present invention is applied to the conventional quench wheel 17 and comprises three radial expansion joints 31 connecting quench surface 14 and drive disk 15, instead of conventional rigid joining means 21.
  • Disk 15A may be another drive disk or simply a coolant sealing disk.
  • the radial expansion joints 31 allow unrestrained radial thermal growth of the quench surface 14 while maintaining concentricity of the quench surface 14 with the shaft of rotation 18 and while providing circumferential support against the torque loads of rotation so that the hot, expanded quench surface does- not slip on the underlying drive disk 15 during, rotation.
  • FIG. 3A a detail of one such radial expansion joint is shown which in essence comprises a radially elongated expansion siot 32in drive disk 15 having its major axis aligned along the radius of drive disk 15 and laterally receives a close fitting sliding-pin 33.
  • Sliding-pin 33 is affixed to the underside of quench surface 14 and is slidably movable in slot 32 as quench surface 14 undergoes radial thermal expansion.
  • sliding-pin 33 is not free to move circumferentially in slot 32 and thus transmits torque loading from the drive disk 15 to the quench surface 14.
  • At least three such radial expansion joints 31 are required to maintain concentricity of the hoop-like quench surface 14 with the shaft of rotation 18 during radial thermal growth. Further, the radial expansion joints 31 must be symmetrically situated on the drive disk 1 5 to maintain concentricity of the quench surface 14. For example, the three joints 31 are spaced equiangularly (120° intervals) at equal radial distances from the shaft of rotation 18. Practically speaking, due to machining tolerances there will be some small circumferential slack in each radial expansion joint and therefore some correspondingly small circumferential (rotational) slack of the quench surface 14 with respect to the drive disk 15.
  • This rotational slack may be minimized by increasing the number of radial expansion joints beyond the minimum of three that are fundamentally required to maintain concentricity of the quench surface. Based on statistical consideration of tolerances, it is preferred to use six radial expansion joints symmetrically situated as discussed above.
  • FIG. 4 a partial cross-section of the quench wheel exposes the lateral details of one embodiment of the radial expansion joint 31.
  • Sliding-pin 33 passes through expansion slot 32 in drive disk 1 5 and is rigidly received into the underside 41 of quench surface 14.
  • Fig. 4A an alternative arrangement of the sliding-pin radial expansion joint is shown wherein the expansion slot 32 is integral to the quench surface 14 and sliding-pin 33 is rigidly received in drive disk 15.
  • a sliding-key type of radial expansion joint is shown.
  • Sliding-key 51 is rigidly secured to the drive disk 15 and is received in expansion groove 52 under quench surface 14.
  • Expansion groove 52 corresponds in shape to sliding-key 51 such that a close fit is obtained.
  • at least three such expansion joints, symmetrically situated, are required to maintain concentricity of the quench surface 14.
  • respective placement of the key and groove may be reversed.
  • Drive disk 15 is shown optionally as supporting quench surface 14 near the center of its underside. Phantom disks 15A are sealing disks for an internal coolant.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Claims (7)

1. Appareil de coulée continue de filaments métalliques par envoi d'un courant d'alliage fondu sur une surface tournante de trempe, comprenant une roue de trempe (17) comportant un disque tournant d'entraînement (15) monté sur un arbre de rotation (18), supportant concentriquement une surface de trempe en forme d'anneau (14), caractérisé par le fait qu'il comporte des moyens d'expansion (31) permettant la libre dilatation thermique radiale de la surface de trempe tout en maintenant sa con- centricité dans une position angulaire relative fixe avec le disque d'entraînement (15).
2. Appareil selon la revendication 1, dans lequel les moyens de dilatation comprennent au moins trois joints d'expansion radial (31) placés entre la surface
Figure imgb0001
trempe (14) et le disque d'entraînement et disposés symétriquement autour de
Figure imgb0002
de rotation (18).
3. Appareil selon la revendication 2, dans lequel chaque joint d'expansion radiale (31) est un joint d'expansion à tenon coulissant (33).
4. Appareil selon la revendication 2, dans lequel chaque joint d'expansion radiale (31) est un joint d'expansion à clavette coulissante (51).
5. Appareil selon l'une des revendications 3 et 4; comportant au moins six joints d'expansion (31
6. Procédé de coulée continue de filaments métalliques par envoi d'un courant d'alliage fondu sur une surface de trempe en forme d'anneau (14) d'une roue tournante de trempe (17), caractérisé par le fait qu'on permet la libre dilatation thermique radiale de la surface de trempe (14) tout en maintenant sa concen- tricité dans une position angulaire relative fixe avec la roue tournante de trempe (17).
7. Procédé selon la revendication 6, dans lequel le filament est un ruban d'alliage vitreux.
EP19800104010 1979-08-17 1980-07-11 Procédé de coulée et dispositif avec surface de trempe extensible de manière continue Expired EP0025098B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US6725679A 1979-08-17 1979-08-17
US67256 1979-08-17

Publications (2)

Publication Number Publication Date
EP0025098A1 EP0025098A1 (fr) 1981-03-18
EP0025098B1 true EP0025098B1 (fr) 1984-01-11

Family

ID=22074781

Family Applications (1)

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EP19800104010 Expired EP0025098B1 (fr) 1979-08-17 1980-07-11 Procédé de coulée et dispositif avec surface de trempe extensible de manière continue

Country Status (4)

Country Link
EP (1) EP0025098B1 (fr)
JP (1) JPS588940B2 (fr)
CA (1) CA1165091A (fr)
DE (1) DE3066088D1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6037177B2 (ja) * 1982-02-13 1985-08-24 川崎製鉄株式会社 急冷薄帯の製造に供する冷却体用Ｃｕ合金
US4489772A (en) * 1982-09-27 1984-12-25 Wirtz Manufacturing Company, Inc. Drum for continuous casting machine
JPS6035221B2 (ja) * 1982-10-12 1985-08-13 石川島播磨重工業株式会社 金属帯板連続鋳造方法及びその装置
GB8327444D0 (en) * 1983-10-13 1983-11-16 Atomic Energy Authority Uk Rotary drum
JPS63187324U (fr) * 1987-05-25 1988-11-30
IT1245866B (it) * 1991-05-30 1994-10-25 Sviluppo Materiali Spa Perfezionamento ai rulli per macchine per colata continua di nastri.
AUPP331698A0 (en) * 1998-05-04 1998-05-28 Bhp Steel (Jla) Pty Limited Casting steel strip

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142571A (en) * 1976-10-22 1979-03-06 Allied Chemical Corporation Continuous casting method for metallic strips
US4124664A (en) * 1976-11-30 1978-11-07 Battelle Development Corporation Formation of filaments directly from an unconfined source of molten material
US4155397A (en) * 1978-05-05 1979-05-22 General Electric Company Method and apparatus for fabricating amorphous metal laminations for motors and transformers

Also Published As

Publication number Publication date
JPS588940B2 (ja) 1983-02-18
CA1165091A (fr) 1984-04-10
JPS5630062A (en) 1981-03-26
EP0025098A1 (fr) 1981-03-18
DE3066088D1 (en) 1984-02-16

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