WO1990014907A1 - Appareil regulateur du debit d'un metal en fusion - Google Patents

Appareil regulateur du debit d'un metal en fusion Download PDF

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Publication number
WO1990014907A1
WO1990014907A1 PCT/JP1989/000550 JP8900550W WO9014907A1 WO 1990014907 A1 WO1990014907 A1 WO 1990014907A1 JP 8900550 W JP8900550 W JP 8900550W WO 9014907 A1 WO9014907 A1 WO 9014907A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
molten metal
rotary
sleeve
control device
Prior art date
Application number
PCT/JP1989/000550
Other languages
English (en)
Japanese (ja)
Inventor
Takashi Otsuka
Kenji Yamamoto
Mototsugu Osada
Tadao Taniguchi
Yoshifumi Shigeta
Original Assignee
Shinagawa Refractories Co., Ltd.
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 JP386888A external-priority patent/JPH01181961A/ja
Application filed by Shinagawa Refractories Co., Ltd. filed Critical Shinagawa Refractories Co., Ltd.
Priority to KR1019910701739A priority Critical patent/KR960010244B1/ko
Priority to AU37466/89A priority patent/AU651946B2/en
Priority to US07/768,989 priority patent/US5316271A/en
Priority to PCT/JP1989/000550 priority patent/WO1990014907A1/fr
Priority to BR898907893A priority patent/BR8907893A/pt
Priority to EP89906467A priority patent/EP0474863B2/fr
Priority to DE68920334T priority patent/DE68920334T3/de
Publication of WO1990014907A1 publication Critical patent/WO1990014907A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures

Definitions

  • the present invention relates to a molten metal flow control device used when pouring molten metal from a molten metal container such as a ladle and a tundish.
  • the nozzle stopper method and slide valve (sliding nozzle) method are well known as the molten metal flow control mechanism. Let's go.
  • Nozzle stopper 1 is immersed in the molten metal, so that the middle of the nozzle stop and zipper 1 may be melted or cut off by heat spoiling. May occur, and flow control may not be possible.
  • cycling In the case of a ladle, it takes tens of minutes to several hours depending on the molten metal component adjustment and temperature adjustment, etc., from when the molten metal is received in the ladle to when the molten metal is poured out (hereinafter referred to as cycling) It took time.
  • the nozzle may be fully closed due to malfunction or necessity during cycling, but if the nozzle is fully closed for a long time, the molten metal solidifies inside the nozzle, so forced opening is necessary.
  • a rotary valve shown in Fig. 19 As a recent new technology, there is a rotary valve shown in Fig. 19. The feature of this method is that it consists of a rotor 20, a dome nozzle 21, and a drive mechanism 20a. The flow rate of the molten metal is controlled by fixing to the dish 23 and rotating the rotor 20.
  • this method also has the following disadvantages.
  • the nozzle 22 was fully closed, and the molten metal was injected into the stanche 23, and the molten metal reached a certain amount. Later, the nozzle 22 is opened and the filling operation is started.However, the nozzle 22 cannot be made too large for the following reasons, and the temperature of the molten metal in the nozzle 22 decreases. In some cases, the molten metal solidifies and it becomes impossible to start.
  • the rotor 20 to increase the size of the nozzle 22, the rotor 20, the dome nozzle 21, and other related members also need to be enlarged, which leads to cost reduction and workability during handling. There is a problem and there is a limit to the size.
  • the nozzle in the event of an emergency such as an operation miss during construction work or overflow of molten metal in the mold, the nozzle
  • the molten metal in the nozzle 22 may solidify as described above, and it may not be possible to restart the filling.
  • the present invention relates to a molten metal flow control device that can be disposed at the bottom or side of a molten metal container, comprising a rotary nozzle, a nozzle receiver, and a sleeve or a rotary nozzle, a nozzle receiver. At least one of the nozzle receiver and the sleeve is provided with at least one concave notch or opening, and at least one of the nozzle holes is provided with a rotary nozzle. Melting characterized in that the nozzle opening surface of the nozzle is rotatably and closely contacted with and supported on the inner peripheral surface of the nozzle receiver or the sleeve, and the rotary nozzle is provided with a rotation mechanism.
  • the present invention provides the molten metal flow control device, wherein the frusto-conical rotary nozzle, the nozzle-receiving sleeve and the rotary nozzle, or the rotary nozzle and the nozzle receiving head,
  • the nozzle and the sleeve are provided with one or more opening holes, and the nozzle opening surface of the rotary nozzle having at least one nozzle hole passed through the nozzle orifice or
  • the present invention relates to a molten metal flow control device characterized in that it is rotatably and closely contacted with and supported on an inner peripheral surface of a sleeve, and the rotary nozzle is provided with a rotating mechanism.
  • the molten metal flow control device of the present invention has the following mechanism:
  • the shape of the rotary nozzle is a conical shape, an inverted truncated cone shape, or a cylindrical shape.
  • the cross section of the nozzle hole of the rotary nozzle is circular or elliptical.
  • An intermediate nozzle is closely fixed to the lower end face of the rotary nozzle.
  • the fitting surface between the rotary nozzle and the intermediate nozzle has a flat surface, a spherical surface, or irregularities.
  • the rotation nozzle is supported by a rotation control case.
  • FIG. 1 to 16 are schematic views showing a specific example of the apparatus of the present invention
  • FIG. 17 shows a slide valve and a nozzle stopper type slider
  • 18 to 20 are graphs showing the relationship between the stroke and the opening area, and are schematic diagrams of known examples.
  • the rotary nozzle 8 has a truncated cone shape as shown in FIGS. 1 and 5, and has a lower part parallel to the rotation axis of the rotary nozzle 8 as shown in FIG. More than two driving flat surfaces are provided, and an L-shaped nozzle hole 9 is provided below the side tapered portion, so that molten metal flows in from the nozzle hole 9 in the tapered portion.
  • the groove 7 and the nozzle block 6 are provided with concave notches 25.
  • the concave notch portion is a notch portion provided at least one place from the upper surface to the side surface of the nozzle receiver 6 and the sleeve 7. Yes, it refers to a cut-out part, regardless of the shape, whether it is a straight cut or a curved cut.
  • Sleeve 7 does not rotate
  • the nozzle holder is fixed to 6 with a barrel.
  • the rotating nozzle 8 and the sleeve 7 are supported by a case 10 so that molten metal does not enter the close contact surface of the sleeve 7 so that the molten metal does not enter the rotating nozzle 8 and that the rotating nozzle 8 is rotatably held.
  • a transmission means illustrated in FIG.
  • the rotary nozzle 8 is rotated, and the nozzle hole 9 is moved to a position other than the concave notch portion 25 of the sleeve 7 and the nozzle holder 6, so that the nozzle hole 9 is closed. Receiving the molten metal into the molten metal container;
  • the molten metal flows out by rotating the rotary nozzle 8 and aligning the nozzle hole 9 with the concave notch 25 of the sleeve 7 and the nozzle receiver 6. Let it.
  • flow control is performed by rotating the rotary nozzle 8 and closing (squeezing) the nozzle hole 9 with the concave notch portion 25 of the sleeve 7. Control.
  • flow control is possible in two places, part A and part B in Fig. 2.
  • the size of the concave notch of the sleeve 7 and the nozzle receptacle 6 is such that the nozzle hole 9 of the rotating nozzle 8 is not closed. And may be taken larger.
  • opening holes 18 and 19 may be provided in the nozzle receiver 6 and the sleeve 7 instead of the concave notch.
  • the number of the nozzle hole 9 and the concave notch 25 is not limited to one, but may be several.
  • the outer shape of the rotary nozzle 8 may be a straight shape (a cylindrical shape) 8a and an inverted tapered shape (an inverted conical shape) 8b on the outer periphery. .
  • the shape of the nozzle hole 9 may be a straight prize through hole 9a obliquely from the tapered surface.
  • the cross section may be elliptical 9b
  • the shape of the sleeve 7 can be a shape 7c that covers the upper part of the rotary nozzle 8.
  • the combination of the rotating nozzle 8 with the sleeve 7 and the nozzle bracket 6 is the same as the combination of the rotating nozzle 8 with the sleeve 7 and the nozzle bracket 6 described above. As shown in the figure, the combination of the rotating nozzle 8 and the nozzle receiver 6c can be used.
  • the case 10 held on the lower flat surface of the rotary nozzle is rotatably held by the outer case 11 so that rotation is given to the rotary nozzle 8, and the case is held by the bolt nut 12. It is fixed to a fixed base 15 welded or bolted to the molten metal container 5. Gears are cut around the outer periphery of the case 10 so that A gear 13 for reduction is provided between the gear 11 and the worm gear 14, and a worm gear 14 is provided on the outside of the gear 13, and a drive source (not shown) such as an electric motor or a hydraulic motor is provided on the worm gear 1.
  • a drive source such as an electric motor or a hydraulic motor is provided on the worm gear 1.
  • the rotary nozzle 8, sleeve 7, and nozzle receiver 6 are the same as those shown in FIG. 1, except that an intermediate nozzle 16 is provided below the rotary nozzle 8. .
  • the intermediate nozzle 16 is closely attached to the rotary nozzle 8 by a case 17 and is fixed so as not to move even when the rotary nozzle 8 rotates.
  • the joint surface between the intermediate nozzle 16 and the rotary nozzle 8 is a flat surface or, as shown in FIGS. 14 and 15, a spherical surface 8e, 16a or one or more irregularities 8f, 16b.
  • the fitting shape may be used.
  • This mechanism is effective when using lower nozzles such as immersion nozzles and long nozzles.
  • FIG. 16 shows another embodiment of the present invention, in which opening holes 18 and 19 are perforated in the nozzle receiver 6 and the sleeve 7 without providing the concave cutout portion 25 described above.
  • the mechanism may be such that it communicates with the nozzle hole 9 of the rotary nozzle 8, and its operation is substantially the same as in the above-described example.
  • It can be used for controlling the flow rate of molten metal discharged from a molten metal container, and can be applied to all molten metals.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Abstract

Appareil régulateur du débit d'un métal en fusion, pouvant être monté dans une partie latérale ou de fond d'un récipient pour métal en fusion, et se composant d'une tuyère rotative présentant différentes formes, d'une brique de répartition recevant la tuyère et d'une chemise, ou d'une tuyère rotative et d'une brique de répartition recevant la tuyère. La brique recevant la tuyère ou la chemise sont pourvues au moins d'un évidement ou d'une ouverture, et la surface de l'extrémité ouverte de la tuyère rotative, qui comporte au moins un trou traversant, repose en contact étroit sur la surface circonférentielle interne de la brique recevant la tuyère ou de la chemise, de sorte que la tuyère puisse tourner, un mécanisme rotatif étant prévu à cet effet au niveau de la tuyère.
PCT/JP1989/000550 1988-01-13 1989-06-01 Appareil regulateur du debit d'un metal en fusion WO1990014907A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
KR1019910701739A KR960010244B1 (ko) 1989-06-01 1989-06-01 용융금속 유량제어장치
AU37466/89A AU651946B2 (en) 1989-06-01 1989-06-01 Apparatus for controlling flow rate of molten metal
US07/768,989 US5316271A (en) 1989-06-01 1989-06-01 Discharge regulator of molten metal
PCT/JP1989/000550 WO1990014907A1 (fr) 1988-01-13 1989-06-01 Appareil regulateur du debit d'un metal en fusion
BR898907893A BR8907893A (pt) 1989-06-01 1989-06-01 Regulador de descarga de metal fundido
EP89906467A EP0474863B2 (fr) 1989-06-01 1989-06-01 Appareil regulateur du debit d'un metal en fusion
DE68920334T DE68920334T3 (de) 1989-06-01 1989-06-01 Vorrichtung zum regeln der fliessgeschwindigkeit von geschmolzenem metall.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP386888A JPH01181961A (ja) 1988-01-13 1988-01-13 溶融金属流量制御装置
PCT/JP1989/000550 WO1990014907A1 (fr) 1988-01-13 1989-06-01 Appareil regulateur du debit d'un metal en fusion

Publications (1)

Publication Number Publication Date
WO1990014907A1 true WO1990014907A1 (fr) 1990-12-13

Family

ID=26337517

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1989/000550 WO1990014907A1 (fr) 1988-01-13 1989-06-01 Appareil regulateur du debit d'un metal en fusion

Country Status (1)

Country Link
WO (1) WO1990014907A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2251820A (en) * 1991-01-18 1992-07-22 Foseco Int Molten metal holding vessel having valved outlet

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63256265A (ja) * 1987-04-13 1988-10-24 Nkk Corp ノズル内装形ロ−タリ−ノズル
JPS6457971A (en) * 1987-08-03 1989-03-06 Didier Werke Ag Rotary closing device for metallurgical vessel and rotor and stator for such rotary closing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63256265A (ja) * 1987-04-13 1988-10-24 Nkk Corp ノズル内装形ロ−タリ−ノズル
JPS6457971A (en) * 1987-08-03 1989-03-06 Didier Werke Ag Rotary closing device for metallurgical vessel and rotor and stator for such rotary closing device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0474863A4 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2251820A (en) * 1991-01-18 1992-07-22 Foseco Int Molten metal holding vessel having valved outlet
WO1992012815A1 (fr) * 1991-01-18 1992-08-06 Foseco International Limited Sortie de cuve
AU653987B2 (en) * 1991-01-18 1994-10-20 Foseco International Limited Vessel outlet
GB2251820B (en) * 1991-01-18 1994-12-14 Foseco Int Vessel outlet
ES2085200A2 (es) * 1991-01-18 1996-05-16 Foseco Int Boca de salida para recipientes de colada de metal fundido.
US5603859A (en) * 1991-01-18 1997-02-18 Foseco International Limited Vessel outlet

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