EP0084335B1 - Dispositif d'hypertrempe sur bande d'un métal ou d'un alliage métallique liquide - Google Patents

Dispositif d'hypertrempe sur bande d'un métal ou d'un alliage métallique liquide Download PDF

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Publication number
EP0084335B1
EP0084335B1 EP19830100114 EP83100114A EP0084335B1 EP 0084335 B1 EP0084335 B1 EP 0084335B1 EP 19830100114 EP19830100114 EP 19830100114 EP 83100114 A EP83100114 A EP 83100114A EP 0084335 B1 EP0084335 B1 EP 0084335B1
Authority
EP
European Patent Office
Prior art keywords
strip
belt
box
alloy
liquid
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
EP19830100114
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0084335A3 (en
EP0084335A2 (fr
Inventor
Pascal Fournier
Jean-Claude Peraud
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.)
Pont a Mousson SA
Original Assignee
Pont a Mousson SA
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 Pont a Mousson SA filed Critical Pont a Mousson SA
Publication of EP0084335A2 publication Critical patent/EP0084335A2/fr
Publication of EP0084335A3 publication Critical patent/EP0084335A3/fr
Application granted granted Critical
Publication of EP0084335B1 publication Critical patent/EP0084335B1/fr
Expired legal-status Critical Current

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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
    • B22D11/06—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
    • B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
    • B22D11/0685—Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the casting belts

Definitions

  • the present invention relates to the hyper-soaking technique, on a strip, according to which a liquid jet of the hyper-soaking product - metal or alloy - is projected onto a moving strip, generally metallic, traveling at high speed, in contact with which this jet is subjected. very brutal cooling (1 O 6 ° C / s), and brought to the state of thin tape.
  • US-A-4221257 illustrates one. More particularly, certain methods use cold fluids injected onto the strip, for example by means of gas cushion boxes with Coanda effect.
  • the present invention calls for the projection of liquid sprayed into fine droplets on the moving strip, this liquid advantageously being water.
  • the present invention therefore relates to a device for the hyper quenching of a metal or a metal alloy according to the preamble of claim 1 which is characterized in that said spraying means are directed towards the face of the opposite strip. to that on which the metal or alloy is sprayed in the liquid state, and that it also comprises, at the level of the zone where the spraying is carried out, a box capable of producing a gas cushion with Coanda effect, and , downstream of said spraying means, means for evacuating the excess sprayed liquid, said box extending at least as far as the zone of said evacuation means.
  • water spraying is therefore carried out on the face of the strip opposite to that on which contact is made with the product to be treated.
  • a vacuum box was also successfully used, arranged downstream of the other means of evacuation (squeegees and brushes) and of the Coanda effect cushion on which these take support.
  • This vacuum box has two slots with a cross-section very close to that of the strip allowing the passage of the latter with a very low air intake.
  • the entire cooling installation is placed inside an enclosure under slight depression, avoiding splashes of coolant and vapor emissions towards the casting zone.
  • the invention thus provides a device allowing a very fine adjustment of the temperature of the strip, which proves to be a particularly critical parameter of the hyperhardening, an optimum temperature of strip appearing for each product to be produced, all other parameters being maintained. unchanged.
  • the appended schematic drawing illustrates an embodiment of a hyperhardening device according to the invention.
  • This device comprises a steel strip 1 driven at high speed (about 40 m / s) on two pulleys 2, 2 ', one of which is powered, preferably the downstream pulley 2', in the direction of advance of the strand upper 1 a of the strip, in order to keep it perfectly taut.
  • the hyper-dipped tape 3 is formed on the upper face of the upper strand 1 a of the strip 1, by projection of a product to be hyper-dipped, from a crucible 4 into a refractory product such as silica comprising an orifice eject 5.
  • a first Coanda effect box 6 is arranged, ensuring in particular that the strip is held in position.
  • This box has, against the strip, a flat surface pierced with holes aligned along the axis of the strip and regularly spaced.
  • the water spray cooling device proposed by the invention is arranged, in the version represented by the drawing, at the level of the lower strand 1b of the strip.
  • This device comprises, placed opposite the underside of this strand, a second box 11 with Coanda effect, of geometry similar to that of box 6.
  • the orifices of the two boxes are supplied with compressed air.
  • a water sprayer 12 is arranged opposite the upper face of the lower strand 1b of the strip, above the box 11 and in the vicinity of its “upstream” end (relative to the movement of the strip).
  • a rotary cylindrical brush 14 rotating in the direction of the arrow f, completes the spinning of the strip.
  • boxes 16 under vacuum, comprising slots or openings arranged in the immediate vicinity of the edges of the strip, so as to suck the water discharged towards the edges of the strip by the squeegees 13.
  • the strip 1 has a length of 4 m and a section of 13 x 0.8 mm.
  • This strip is driven by the pulley 2 'at a speed of around 40 m / s.
  • the flat surface of the box 6 facing the strip 1 has a length of 50 cm and a width of 10 cm. It is pierced with holes with a diameter of 1.5 mm, aligned along the axis of the strip, with a spacing of 25 mm. These holes are supplied with pressurized air with a flow rate of approximately 10 m 3 / h normal.
  • the box 11 has a geometry identical to that of the box 6 and is supplied with air under the same conditions.
  • the rotary brush 14 has a diameter equal to 100 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Nozzles (AREA)
EP19830100114 1982-01-18 1983-01-08 Dispositif d'hypertrempe sur bande d'un métal ou d'un alliage métallique liquide Expired EP0084335B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8200664A FR2519891A1 (fr) 1982-01-18 1982-01-18 Procede et dispositif de trempe rapide sur bande d'un metal ou d'un alliage metallique liquide
FR8200664 1982-01-18

Publications (3)

Publication Number Publication Date
EP0084335A2 EP0084335A2 (fr) 1983-07-27
EP0084335A3 EP0084335A3 (en) 1983-08-03
EP0084335B1 true EP0084335B1 (fr) 1985-08-14

Family

ID=9270056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830100114 Expired EP0084335B1 (fr) 1982-01-18 1983-01-08 Dispositif d'hypertrempe sur bande d'un métal ou d'un alliage métallique liquide

Country Status (6)

Country Link
EP (1) EP0084335B1 (it)
JP (1) JPS58123833A (it)
BR (1) BR8300206A (it)
DE (1) DE3360531D1 (it)
ES (1) ES519037A0 (it)
FR (1) FR2519891A1 (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2096365A1 (en) * 1992-06-23 1993-12-24 Donald G. Harrington Method and apparatus for continuous casting of metals
FR2700282B1 (fr) * 1993-01-13 1995-03-03 Seva Procédé et installation de fabrication de rubans métalliques amorphes par hypertrempe.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH604970A5 (it) * 1974-11-01 1978-09-15 Erik Allan Olsson
JPS5928428B2 (ja) * 1976-12-20 1984-07-12 古河電気工業株式会社 箔状金属テ−プ製造法
US4221257A (en) * 1978-10-10 1980-09-09 Allied Chemical Corporation Continuous casting method for metallic amorphous strips

Also Published As

Publication number Publication date
FR2519891B1 (it) 1984-10-26
BR8300206A (pt) 1983-10-11
EP0084335A3 (en) 1983-08-03
ES8308734A1 (es) 1983-10-16
JPS58123833A (ja) 1983-07-23
JPH0353060B2 (it) 1991-08-13
ES519037A0 (es) 1983-10-16
EP0084335A2 (fr) 1983-07-27
DE3360531D1 (en) 1985-09-19
FR2519891A1 (fr) 1983-07-22

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