EP0286647B1 - Device for clamping fire-proof plates in metallic frames of shaft locks - Google Patents

Device for clamping fire-proof plates in metallic frames of shaft locks Download PDF

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Publication number
EP0286647B1
EP0286647B1 EP87905732A EP87905732A EP0286647B1 EP 0286647 B1 EP0286647 B1 EP 0286647B1 EP 87905732 A EP87905732 A EP 87905732A EP 87905732 A EP87905732 A EP 87905732A EP 0286647 B1 EP0286647 B1 EP 0286647B1
Authority
EP
European Patent Office
Prior art keywords
frame
clamping jaw
plate
clamping
guideways
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
EP87905732A
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German (de)
French (fr)
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EP0286647A1 (en
Inventor
Robert Fricker
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.)
Stopinc AG
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Stopinc AG
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Publication date
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Publication of EP0286647A1 publication Critical patent/EP0286647A1/en
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Publication of EP0286647B1 publication Critical patent/EP0286647B1/en
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Expired - Lifetime legal-status Critical Current

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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
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/08—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like for bottom pouring
    • 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
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/28—Plates therefor
    • B22D41/34—Supporting, fixing or centering means therefor

Definitions

  • the invention relates to a device for clamping refractory plates in metallic frames of sliding closures for the pouring of metallurgical vessels, with a wedge piece, which is movable on the thread of a threaded bolt rotatably mounted in the frame, by adjusting by means of the threaded bolt wedge action over an oblique to plate circumferential inclined driving surface and with this acts on the pressure surface of a sliding jaw in the frame.
  • the stated object is essentially achieved in that the clamping jaw is in engagement with the wedge piece via guide tracks inclined in accordance with the driving surface.
  • the clamping jaw is in engagement with the wedge piece via guide tracks inclined in accordance with the driving surface.
  • Each device 7 has a U-shaped clamping jaw 8 which is guided in a sliding bed 10 of the frame 3 with flank strips 9 provided on the U-legs.
  • the outer side of the U-web connecting the legs serves as a contact side 11 with respect to the plate circumference 14, specifically via a sheet metal tire 13 mounted thereon. whose ends in on the inner sides 16 of the U-legs with grooves 17 arranged in the same inclined position are extended into them (FIGS. 4 and 5).
  • the U-shaped clamping jaw 8 comprises a wedge piece 18, which engages in the grooves 17 with springs 19 and whose driving surface 20 forms the counter surface to the pressure surface 15. Conversely, at least one spring could also be formed in the clamping jaw 8, which would be in a corresponding manner in engagement with a groove formed in the wedge piece 18.
  • the wedge piece 18, which is provided with a threaded bore 21, is arranged vertically to the plane of the plate 2 and frame 3 and is arranged on a threaded bolt 23 which is rotatable about the longitudinal axis in a stepped bore 22 of the frame 3.
  • a plurality of devices 7 can be provided distributed over the plate circumference 14, which in cooperation with the contact surface 11 of the clamping jaw 8 can also have an oval or round shape, for example.

Abstract

For clamping fire-proof plates (2) in the metallic frame (3) of shaft locks, a device is disclosed having a clamping jaw (8) that can be urged against the periphery (14) of the plate and actuated by a wedge (18) adjustable for this purpose on the thread of a threaded bolt (23) rotatively arranged in the frame (3). The wedge (18) engages the clamping jaw (8) over guide-ways (17, 19). An improved operation of the clamping device should thus be possible, in particular during unclamping.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Einspannen von feuerfesten Platten in metallische Rahmen von Schiebeverschlüssen für den Ausguß metallurgischer Gefäße, mit einem Keilstück, das auf dem Gewinde eines im Rahmen verdrehbar gelagerten Gewindebolzens beweglich ist, durch Verstellen mittels des Gewindebolzens Keilwirkung über eine schräg zum plattenumfang geneigte Treibfläche ausübt und mit dieser auf die Druckfläche einer im Rahmen gleitenden Spannbacke wirkt.The invention relates to a device for clamping refractory plates in metallic frames of sliding closures for the pouring of metallurgical vessels, with a wedge piece, which is movable on the thread of a threaded bolt rotatably mounted in the frame, by adjusting by means of the threaded bolt wedge action over an oblique to plate circumferential inclined driving surface and with this acts on the pressure surface of a sliding jaw in the frame.

Bei einer aus der JP-A-61-159258 bekannten Spannvorrichtung dieser Art ist das Backenteil unverschiebbar am Plattenumfang angebracht und weist eine glatte Druckfläche auf, die mit einer ebenfalls glatten Treibfläche des Keilstücks zusammenwirkt. Nachteilich dabei ist es, daß beim Lösen des Gewindebolzens, beispielsweise zum Plattenaustausch, das Keilstück und die Spannbacke sich infolge von Wärmespannungen und Verschmutzungen festklemmen und aus ihrer position nur mühsam entfernt werden können, was einem zügigen Auswechseln der Platten hinderlich ist.In a tensioning device of this type known from JP-A-61-159258, the jaw part is attached immovably to the plate periphery and has a smooth pressure surface which interacts with a likewise smooth driving surface of the wedge piece. The disadvantage here is that when loosening the threaded bolt, for example for plate replacement, the wedge piece and the clamping jaw become jammed as a result of thermal stresses and soiling and can only be removed with difficulty from their position, which is an obstacle to the rapid replacement of the plates.

Aus der DE-OS-35 22 134 sind ferner Spannvorrichtungen mit Keilstücken bekannt, die zwischen der Umfangsfläche der feuerfesten Platte und einem Umfangsboard des metallischen Rahmens zur Wirkung kommen, indem durch Löcher der Keilstücke gesteckte und in Gewindebohrungen des Rahmens eingeschraubte Gewindebolzen festgezogen werden. Auch hier ist es von Nachteil, daß beim Lösen der Gewindebolzen die Keilstücke infolge von Wärmeverspannungen und Verschmutzungen oftmals festklemmen und aus ihrer Position nur mühsam entfernbar sind.From DE-OS-35 22 134 clamping devices with wedge pieces are also known, which come into effect between the peripheral surface of the refractory plate and a peripheral board of the metallic frame, by inserting threaded bolts through holes in the wedge pieces and screwing them into threaded holes in the frame. Here, too, it is disadvantageous that when the threaded bolts are loosened, the wedge pieces often become jammed as a result of thermal stresses and dirt and can only be removed with difficulty from their position.

Die mit vorliegender Erfindung zu lösende Aufgabe besteht in einer Verbesserung der Wirkungsweise der Spannvorrichtung, insbesondere beim Lösen der Verspannung.The object to be achieved with the present invention is to improve the mode of operation of the tensioning device, in particular when releasing the tension.

Die gestellte Aufgabe wird gemäß der Erfindung im wesentlichen dadurch gelöst, daß die Spannbacke mit dem Keilstück über entsprechend der Treibfläche geneigte Führungsbahnen in Eingriff steht. Auf diese Weise wird beim Anziehen des Gewindebolzens nicht nur ein gleichmäßig einspannender Flächendruck über die Spannbacke auf die plattenumfangsfläche übertragen, die in jedem Fall lotrecht zur Plattenebene steht, sondern beim Aufdrehen des Gewindebolzens mit dem Lösen des Keilstücks gleichzeitig ein Zurückfahren der Spannbacke vom Plattenumfang erreicht. Dadurch wird die feuerfeste Platte für einen ungehinderten schnellen Plattenwechsel im Rahmen automatisch offengelegt.The stated object is essentially achieved in that the clamping jaw is in engagement with the wedge piece via guide tracks inclined in accordance with the driving surface. In this way, when the threaded bolt is tightened, not only is a uniformly clamping surface pressure transmitted via the clamping jaw to the circumferential surface of the plate, which is in any case perpendicular to the plane of the plate, but when the threaded bolt is unscrewed, the clamping jaw is simultaneously moved back from the circumference of the plate. As a result, the fireproof plate is automatically exposed in the frame for an unhindered quick plate change.

Im einzelnen wird bezüglich des Aufbaues der Vorrichtung zweckmäßig so vorgegangen, daß die Spannbacke in einem Bett des Rahmens gleitet und dabei das auf dem Gewindebolzen bewegliche Keilstück U-förmig mit in Gleitrichtung liegende Längsseiten umfaßt, in derem Berührungsbereich die Führungsbahnen liegen. Diese sind vorteilhaft als an der Druckfläche der Spannbacke in den Längsseiten angeordnete Nuten und gegenprofilierte Federn des Keilstücks ausgebildet. Eine solche Konstruktion ist einfach und wirkungsvoll.In detail, with regard to the structure of the device, the procedure is expediently such that the clamping jaw slides in a bed of the frame and thereby comprises the U-shaped wedge piece which is movable on the threaded bolt and has longitudinal sides lying in the sliding direction, in the contact area of which the guideways lie. These are advantageously designed as grooves arranged on the pressure surface of the clamping jaw in the longitudinal sides and counter-profiled springs of the wedge piece. Such a construction is simple and effective.

Bezüglich der Ausbildung, Anordnung und Handhabung des das Keilstück tragenden Gewindebolzens schlägt die Erfindung vor, daß der Bolzen lotrecht oder nahezu lotrecht zur Plattenebene angeordnet ist und mit einem Bund in einer abgesetzten Ausnehmung des Rahmens lagert und ein Steckschlüsselprofil in dem zur Montagefläche des Rahmens zeigenden Gewindeteil hat. Dadurch ergibt sich eine kompakte Bauweise der Vorrichtung, die verspannt vollständig im Rahmen integriert ist.With regard to the design, arrangement and handling of the threaded bolt carrying the wedge piece, the invention proposes that the bolt be arranged perpendicular or almost perpendicular to the plane of the plate and supported with a collar in a recessed recess in the frame and a socket profile in the threaded part pointing towards the mounting surface of the frame Has. This results in a compact construction of the device which is fully integrated under tension in the frame.

Die Erfindung ist nachstehend anhand der Zeichnung an einem Ausführungsbeispiel erläutert. Es zeigen:

  • Figur 1 einen mit Spannvorrichtungen gemäß der Erfindung ausgestatteten Linear-Schieberverschluß im Längsschnitt,
  • Figur 2 eine eine Spannvorrichtung aufweisende Teildraufsicht auf die Schieberr..iatten- und Rahmeneinheit des Verschlusses,
  • Figur 3 einen Schnitt nach der Linie 111-111 der Figur 2 in größerem Maßstab,
  • Figur 4 eine Draufsicht auf den aus Figur 3 herausgenommenen Teil 8,
  • Figur 5 einen Querschnitt des Teils 8 nach Figur 4,
  • Figur 6 eine Draufsicht auf den Teil 18 nach Figur 3, und
  • Figur 7 eine Seitenansicht des Teils 18 nach Figur 6.
The invention is explained below with reference to the drawing using an exemplary embodiment. Show it:
  • 1 shows a longitudinal slide closure equipped with tensioning devices according to the invention,
  • FIG. 2 shows a partial top view of a tensioning device on the slide plate and frame unit of the closure,
  • 3 shows a section along the line 111-111 of FIG. 2 on a larger scale,
  • FIG. 4 shows a plan view of part 8 removed from FIG. 3,
  • FIG. 5 shows a cross section of part 8 according to FIG. 4,
  • Figure 6 is a plan view of part 18 of Figure 3, and
  • FIG. 7 shows a side view of part 18 according to FIG. 6.

Der im einzelnen nicht näher beschriebene Schieberverschluß 1 nach Figur 1 hat zwei feuerfeste Verschlußplatten 2, eine ortsfeste Bodenplatte und eine verstellbare Schieberplatte. Beide sind in metallischen Rahmen 3 gehalten. Die Bodenplatte im Gehäuserahmen 4 und die Schieberplatte im Schieberrahmen 5, der in einer über die Schließstellung hinausgefahrenen Position um die Achse 6 aus der Betriebsstellung nach unten herausgeschwenkt werden kann. In dieser in Figur 1 der Einfachheit halber nicht gezeigten Stellung des Schieberrahmens 5 sind die identischen Spannvorrichtungen 7 zugänglich, mit denen die Platten 2 in ihren Rahmen 3 eingespannt sind, um Relativbewegungen zwischen der Platte 2 und dem Rahmen 3 beim Verstellen des Schieberrahmens 5 zu vermeiden. Weitere Vorrichtungen können zum Einspannen der ortsfesten Unterplatte an Dreiplatten-Schieberverschlüssen vorgesehen sein.The slide closure 1 according to FIG. 1, which is not described in detail, has two fire-resistant closure plates 2, a stationary base plate and an adjustable slide plate. Both are held in metallic frames 3. The base plate in the housing frame 4 and the slide plate in the slide frame 5, which can be pivoted out about the axis 6 from the operating position in a position moved beyond the closed position. In this position of the slide frame 5, which is not shown in FIG. 1 for the sake of simplicity, the identical clamping devices 7 are accessible with which the plates 2 are clamped in their frame 3 in order to avoid relative movements between the plate 2 and the frame 3 when the slide frame 5 is adjusted . Further devices can be provided for clamping the fixed lower plate on three-plate slide closures.

Jede Vorrichtung 7 hat eine U-förmig ausgebildete Spannbacke 8, die mit an den U-Schenkeln vorgesehenen Flankenleisten 9 in einem Gleitbett 10 des Rahmens 3 geführt ist. Die äußere Seite des die Schenkel verbindenden U-Steges dient als Kontaktseite 11 gegenüber dem Plattenumfang 14, und zwar über einen darauf aufgezogenen Blechreifen 13. Parallel zur Kontaktseite 11 ist an der Innenseite des U-Steges eine schräg zum Plattenumfang 14 geneigte Druckfläche 15 vorgesehen, deren Enden in an den Innenseiten 16 der U-Schenkel mit derselben Schräglage angeordneten Nuten 17 hineinverlängert sind (Figuren 4 und 5).Each device 7 has a U-shaped clamping jaw 8 which is guided in a sliding bed 10 of the frame 3 with flank strips 9 provided on the U-legs. The outer side of the U-web connecting the legs serves as a contact side 11 with respect to the plate circumference 14, specifically via a sheet metal tire 13 mounted thereon. whose ends in on the inner sides 16 of the U-legs with grooves 17 arranged in the same inclined position are extended into them (FIGS. 4 and 5).

Die U-förmige Spannbacke 8 umfaßt ein Keilstück 18, das mit Federn 19 in die Nuten 17 greift und dessen Treibfläche 20 die Gegenfläche zur Druckfläche 15 bildet. Umgekehrt könnte auch mindestens eine Feder in der Spannbacke 8 ausgebildet sein, die in entsprechender Weise in Eingriff mit einer im Keilstück 18 ausgebildeten Nut stehen würde. Dabei ist das mit einer Gewindebohrung 21 versehene Keilstück 18 vertikal zur Planebene von Platte 2 und Rahmen 3 verstellbar auf einem in einer abgesetzten Bohrung 22 des Rahmens 3 um die Längsachse verdrehbar lagernden Gewindebolzen 23 angeordnet. Dieser hintergreift mit einem Bund 24 einen Absatz 25 der die Rahmendicke durchstechenden Bohrung 22 und trägt in seiner gewindeseitigen Stirnfläche 26 ein Profil 24 zum Einführen eines Steckschlüssels 28. Der am Absatz 25 erweiterte Teil 29 der Rahmenbohrung 22 ist die Einführseite des Bolzens 23 und durch einen Stopfen 30 verschließ- bar. Im übrigen grenzt das Keilstück 18 mit seinem von der Spannbacke 7 nicht umfaßten, abgerundeten Umfangsbereich 30 an die das Gleitbett 10 im Rahmen 3 beendende Querwand 32 an.The U-shaped clamping jaw 8 comprises a wedge piece 18, which engages in the grooves 17 with springs 19 and whose driving surface 20 forms the counter surface to the pressure surface 15. Conversely, at least one spring could also be formed in the clamping jaw 8, which would be in a corresponding manner in engagement with a groove formed in the wedge piece 18. The wedge piece 18, which is provided with a threaded bore 21, is arranged vertically to the plane of the plate 2 and frame 3 and is arranged on a threaded bolt 23 which is rotatable about the longitudinal axis in a stepped bore 22 of the frame 3. This engages with a collar 24 a shoulder 25 of the bore 22 piercing the frame thickness and carries in its thread-side end face 26 a profile 24 for inserting a socket wrench 28 various plug 30 l ieß- bar. For the rest, the wedge piece 18 borders with its rounded peripheral region 30, which is not encompassed by the clamping jaw 7, to the transverse wall 32 which ends the sliding bed 10 in the frame 3.

Wie insbesondere aus Figur 3 ersichtlich, fährt beim Hantieren des Schlüssels 28 zum Festspannen der Platte 2 im Rahmen 3 das Keilstück 18 in den Gewindebolzen 23 hinein und bewegt die Spannbacke 8 durch Druckgebung über die Treibfläche 20 und die Druckfläche 15 im Gleitbett 10 in Richtung des Plattenumfanges 14, bis der Einspanneffekt erreicht ist. Umgekehrt schieben beim Lösen der Einspannung durch Herausfahren des Keilstückes 18 aus dem Gewindebolzen 23 die in den Führungsbahnen 17 gleitenden Federn 19 die Spannbacke 8 vom Plattenumfang 14 weg und geben somit die Platte 2 zur Handhabung frei.As can be seen in particular from FIG. 3, when the key 28 for clamping the plate 2 in the frame 3 is being manipulated, the wedge piece 18 moves into the threaded bolt 23 and moves the clamping jaw 8 by pressure via the driving surface 20 and the pressure surface 15 in the sliding bed 10 in the direction of Plate circumference 14 until the clamping effect is reached. Conversely, when releasing the clamping by moving the wedge piece 18 out of the threaded bolt 23, the springs 19 sliding in the guideways 17 push the clamping jaw 8 away from the plate circumference 14 and thus release the plate 2 for handling.

Es liegt im Wesen der Erfindung, die Vorrichtung 7 an anderen Umfangsbereichen der Platte 2 als des gezeigten stirnseitigen Bereiches einzusetzen. Ferner können mehrere Vorrichtungen 7 über den Plattenumfang 14 verteilt vorgesehen sein, der im Zusammenwirken mit der Kontaktfläche 11 der Spannbacke 8 beispielsweise auch ovale oder runde Gestalt haben kann.It is in the essence of the invention to use the device 7 on different peripheral regions of the plate 2 than the end region shown. Furthermore, a plurality of devices 7 can be provided distributed over the plate circumference 14, which in cooperation with the contact surface 11 of the clamping jaw 8 can also have an oval or round shape, for example.

Ferner könnte der Gewindebolzen statt lotrecht, ebensogut parallel zur Plattenebene und zu deren Umfang im Rahmen 3 gelagert sein; die Treib-und die Druckfläche müßten dann in horizontaler Richtung schräg sein, und in entsprechender Weise zum Ausführungsbeispiel würde eine an der Treibfläche ausgebildete Mitnehmerfeder mit einer in der Spannbacke vorgesehenen Nut in Eingriff stehen.Furthermore, the threaded bolt could be mounted parallel to the plane of the plate and its circumference in the frame 3 instead of perpendicular; the drive and pressure surfaces would then have to be oblique in the horizontal direction, and in a manner corresponding to the exemplary embodiment, a drive spring formed on the drive surface would engage with a groove provided in the clamping jaw.

Claims (4)

1. Apparatus for clamping refractory plates in metallic frames of sliding gate valves for the outlet of metallurgical vessels with a wedging member which is movable on the screw thread of a threaded peg rotatably mounted in the frame, exerts a wedging effect via a drive surface oblique to the plate periphery when it is moved by means of threaded peg and acts with this drive surface on the pressure surface of a clamping jaw sliding in the frame, characterised in that the clamping jaw (8) engages the wedging member (18),via guideways (17, 19) inclined corresponding to the drive surface (20).
2. Apparatus as claimed in claim 1, characterised in that the clamping jaw (8) slides in a slide bed (10) of the frame (3) and is of U shape and embraces the wedging member (18) with longitudinal sides (16) which extend in the sliding direction and in whose contact region the guideways (17, 19) lie.
3. Apparatus as claimed in claim 2, characterised in that the guideways (17, 19) are constructed as grooves (17) arranged in the longitudinal sides (16) of the pressure surface (15) of the clamping jaw (8) and complementarily shaped tongues (19) on the wedging member (18).
4. Apparatus as claimed in the preceding claims, characterised in that the threaded peg (23) is disposed perpendicularly or nearly perpendicularly to the plane of the plate and is supported with a flange (24) in a recess (22, 29) in the frame (3) with a shoulder and has a socket wrench profile (27) in the threaded portion directed towards the mounting surface of the frame (3).
EP87905732A 1986-10-21 1987-07-28 Device for clamping fire-proof plates in metallic frames of shaft locks Expired - Lifetime EP0286647B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3635717 1986-10-21
DE3635717A DE3635717C1 (en) 1986-10-21 1986-10-21 Device for clamping refractory plates in metal frames of slide closures

Publications (2)

Publication Number Publication Date
EP0286647A1 EP0286647A1 (en) 1988-10-19
EP0286647B1 true EP0286647B1 (en) 1990-05-09

Family

ID=6312118

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87905732A Expired - Lifetime EP0286647B1 (en) 1986-10-21 1987-07-28 Device for clamping fire-proof plates in metallic frames of shaft locks

Country Status (9)

Country Link
US (1) US4867428A (en)
EP (1) EP0286647B1 (en)
JP (1) JPS63502494A (en)
KR (1) KR880004879A (en)
BR (1) BR8707504A (en)
CA (1) CA1309862C (en)
DE (1) DE3635717C1 (en)
WO (1) WO1988003069A1 (en)
ZA (1) ZA876461B (en)

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US5044533A (en) * 1990-10-01 1991-09-03 Flo-Con Systems, Inc. Clamp for bandless refractory and method
DE4002611A1 (en) * 1990-01-30 1991-08-01 Cerafer Sarl SLIDER PLATE FOR SLIDER LATCHES FROM METALLURGICAL VESSELS
SE465673B (en) * 1990-03-01 1991-10-14 Rockwool Ab DEVICE FOR SCRAPPING OF STANDARD MINERAL MELTA, SK BEARING, FROM PIPEN TO A TRANSPORT RANGE FOR A MINERAL MELTA AT A PLANT FOR THE PRODUCTION OF MINERAL WOOL FIBER
DE4006894A1 (en) * 1990-03-05 1991-09-12 Cerafer Sarl SLIDING CLOSURE FOR METALLURGICAL VESSELS, IN PARTICULAR FOUNDATION TANS
JP2579523Y2 (en) * 1991-03-26 1998-08-27 相生精機株式会社 Clamping device
US5833225A (en) * 1995-11-13 1998-11-10 Weber; Gene Gripping device
US5762325A (en) * 1996-01-29 1998-06-09 Isi Norgren Inc. Power actuated gripper
US5938257A (en) * 1996-11-25 1999-08-17 Isi Norgren Inc. Power actuated parallel gripper
KR100403729B1 (en) * 2002-01-26 2003-10-30 삼성전자주식회사 Holder and holder base using wedge
WO2008071327A1 (en) * 2006-12-11 2008-06-19 Stopinc Aktiengesellschaft Sliding closure for a metallurgical vessel
CH707075B1 (en) * 2012-10-11 2021-01-15 Refractory Intellectual Property Gmbh & Co Kg Slide closure for a vessel containing molten metal.
CN104589083A (en) * 2014-11-25 2015-05-06 苏州福润机械有限公司 Valve rotating fixture
CH710652B1 (en) * 2015-01-23 2019-06-28 Refractory Intellectual Property Gmbh & Co Kg Sliding closure for a container containing molten metal.
US9844855B1 (en) * 2016-06-21 2017-12-19 Po-Shen Chen Workpiece clamp device with single side
CN108274282A (en) * 2017-12-30 2018-07-13 天津市维丹科技有限责任公司 A kind of valve deck inner face fixer for machining

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JPS61159259A (en) * 1984-12-28 1986-07-18 Toshiba Ceramics Co Ltd Molten metal discharging device

Also Published As

Publication number Publication date
JPS63502494A (en) 1988-09-22
EP0286647A1 (en) 1988-10-19
DE3635717C1 (en) 1987-07-16
CA1309862C (en) 1992-11-10
JPH0242584B2 (en) 1990-09-25
KR880004879A (en) 1988-06-27
US4867428A (en) 1989-09-19
ZA876461B (en) 1988-06-29
BR8707504A (en) 1989-02-21
WO1988003069A1 (en) 1988-05-05

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