EP0151723B1 - Dispositif d'alimentation en métal liquide pour installation de coulée continue verticale d'un tube métallique, notamment en fonte - Google Patents

Dispositif d'alimentation en métal liquide pour installation de coulée continue verticale d'un tube métallique, notamment en fonte Download PDF

Info

Publication number
EP0151723B1
EP0151723B1 EP84114695A EP84114695A EP0151723B1 EP 0151723 B1 EP0151723 B1 EP 0151723B1 EP 84114695 A EP84114695 A EP 84114695A EP 84114695 A EP84114695 A EP 84114695A EP 0151723 B1 EP0151723 B1 EP 0151723B1
Authority
EP
European Patent Office
Prior art keywords
die
central relief
relief
stand
cavity
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
EP84114695A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0151723A1 (fr
Inventor
Yves Gourmel
Michel Pierrel
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
Priority to AT84114695T priority Critical patent/ATE32843T1/de
Publication of EP0151723A1 publication Critical patent/EP0151723A1/fr
Application granted granted Critical
Publication of EP0151723B1 publication Critical patent/EP0151723B1/fr
Expired legal-status Critical Current

Links

Images

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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • 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
    • B22D11/006—Continuous casting of metals, i.e. casting in indefinite lengths of tubes
    • 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
    • B22D11/14—Plants for continuous casting
    • B22D11/145—Plants for continuous casting for upward casting

Definitions

  • the present invention relates to the vertical upward continuous casting of a metal tube, in particular of cast iron, without the use of a core for the formation of the cavity of the barrel of the tube.
  • the invention relates more precisely to a device for supplying liquid metal to a tubular die giving the external shape of such a tube either from a siphon block (source supply) or from a ladle under gas pressure (low pressure casting, with liquid metal rising in the mold).
  • tubular die of vertical axis forms with a support base which constitutes the bottom a crucible for the metal liquid brought in from below, either by siphon block or by swelling bag.
  • the crucible formed by the tubular die and the support base contains a cylindrical volume of liquid metal, which is all the more important the larger the diameter of the tube to be obtained.
  • the Applicant has posed the problem of considerably reducing the volume of metal, in particular liquid cast iron to be brought to the lower end of the die in an installation for continuous upward casting of a tube, despite the absence of a core, therefore to achieve significant savings in liquid metal fusion energy, in particular in liquid iron.
  • the crucible contains only a small annular volume of liquid metal whose annular width is much greater than the thickness of the tube to be obtained but whose total volume is considerably reduced compared to that which a crucible without of central relief.
  • the central relief is hollowed out by a cavity which passes right through it, which allows access, by this cavity inside the tube being formed, to above the central relief, that is to say the possibility of introducing through this cavity of the central relief control tools, for example of liquid metal level of the thickness of the tube formed.
  • the invention is applied to the continuous upward casting of a cast iron tube T.
  • a base 1 hollow, made of refractory material, for example of the silico-aluminous type, internally comprises an L-shaped pouring duct with horizontal or slightly oblique leg 2 and with vertical chimney 3 ending at its upper part by a pouring funnel 4 .
  • the base 1 of the siphon block forms a support base for a tubular die described below.
  • the siphon block carries a central relief 5 of frustoconical external shape with vertical axis XX, of high height above the base 1.
  • the base 1 carries a crucible consisting of a tubular die comprising a graphite jacket 6, of axis XX, the inside diameter of which corresponds to the outside diameter of the tube T to be obtained and an envelope 7.
  • the jacket 6 is cooled externally by an envelope 7, for example made of copper, with circulation of cooling water which enters through a conduit 8 and leaves a conduit 9.
  • the assembly "jacket 6 and envelope 7" is therefore designated below. after under the term of "sector 6-7".
  • a refractory annular spacer block can be interposed between the cooling jacket or cooling box 7 and the base 1.
  • the central relief 5 of the invention which is an integral part of the siphon block 1,2,3,4 in the present example, is also part of the crucible formed by the combination of the siphon block and the die 6-7.
  • the central relief 5 has a height above the base 1 which is at least equal to and preferably greater than the height of the die 6-7 above said base 1.
  • the frustoconical central relief 5 has a large base, below the support constituted by the base 1, of diameter substantially less than the internal diameter that one wants to obtain on the tube T to be formed. A fortiori, the small upper base of the central relief 5 has a diameter substantially smaller than that of the cavity of the tube to be obtained.
  • the central relief 5 is hollowed out by a lightening cavity 10, for example of frustoconical shape. But such a recess is not compulsory.
  • the horizontal conduit 2 of the siphon block opens below the base 1, on the wall of a crucible bottom formed by the siphon block itself, so as to bring the liquid iron to the lower end of the die 6-7, below the lower end edge of the jacket 6.
  • the opening of the horizontal conduit 2 for supplying liquid metal has a diameter less than the width of the annular space between the large lower base of the central relief 5 and the cylindrical cavity of the die 6-7.
  • annular thickness of this annular volume of metal or of liquid iron is substantially greater than the thickness e of the tube T to be formed.
  • the relief 5 constitute a core for the formation of the tube T.
  • a certain annular volume of iron or liquid metal must remain between the periphery being solidified and the outer wall.
  • the annular volume of metal or liquid iron between the central relief 5 and the die 6-7 has at its lower end a radial thickness which is at least twice the thickness e of the tube T.
  • the installation is completed by means of vertical guide of the tube T, partially represented by a pair of rollers or guide rollers E and is completed by an extractor not shown and consisting of a lifting device arranged to grip the upper end of the T tube formed and to gradually raise the T tube, using a stepping drive motor.
  • Liquid iron is introduced along arrow f into the pouring funnel 4.
  • the filling of the siphon block and the crucible constituted by the die 6-7 with jacket 6 and the central relief 5 of the siphon block is carried out until the level of liquid iron N reaches a height slightly lower than the total height of the sector 6-7 so as not to overflow.
  • the level N of the liquid iron F is the same inside the crucible or the die 6-7 and inside the chimney 3.
  • the jacket 7 is crossed by a current of Cold water.
  • a dummy or false tube M consisting of a tubular steel sleeve having substantially the same internal and external diametrical dimensions, therefore substantially of the same thickness e as the tube T to be obtained, is introduced by the top of the die 6-7 using guide rollers E so as to immerse in the cast iron its lower part cut out in M1, for example in dovetail, to allow the attachment of the liquid cast iron F.
  • the die 6-7 While the die 6-7 is not cooled at its lower end, it is on the contrary cooled over most of its height, up to its upper end because the jacket 6 is enveloped by the envelope of cooling 7. As a result, the cast iron solidifies on contact with the die 6-7 over the entire height which corresponds to that of the liner 7 up to the mannequin M in contact with which it solidifies.
  • the thickness of cast iron solidified along a solidification front S is higher the lower the speed of introduction of liquid iron from below.
  • the liquid iron F fills the notch M1 of the manikin M, solidifies, and consequently hangs on the manikin M.
  • the manikin being pulled up by the extractor, rises in spurts and drives the part of solidified iron up, step by step.
  • the variant of FIG. 3 is applied to the formation of a tube T1 comprising an interlocking.
  • This variant derives from the installation described in the patent application in France 83 11 788 of July 12, 1983:
  • the installation is similar to that of FIG. 1, but also comprises, as described in patent application 83 11 788, means for forming the socket.
  • the plate 11 which supports the jacket 7 is refractory material, for example of the silico-aluminous type. It is intended to prevent cooling of the base 1 by the jacket 7.
  • the means to form the nesting are as follows:
  • the jacket 6 of the die 6-7 is surmounted or extended at its upper part by a metallic annular shell 12, for example of steel, of axis XX, flared upwards, giving the external shape of the interlocking of the pipe in cast iron to be obtained.
  • the shell 12 is connected without discontinuity both with the inner wall and with the outer wall of the jacket 6.
  • the shell 12 is cooled either by ambient air, or by water jets not shown.
  • the shell 12 supports, by an enlarged frustoconical surface 13, the flange 14 a of an annular interlocking core 14 made of refractory and air-permeable molding material, for example in a hardened mixture of sand and thermosetting resin.
  • the core 14 gives the internal profile of the fitting of the pipe to be obtained. It comprises a tubular skirt 15, the external wall of which corresponds to the internal wall of the pipe which is to be molded.
  • the skirt 15 extends downwards beyond the shell 12, over a certain height from the die 6-7 at the upper part thereof.
  • the skirt 15 therefore provides, with lachemise 6 of the dies 6-7, an annular space 16 corresponding to the thickness of the pipe to be formed.
  • the core 14 necessarily includes an internal coating 17 (tubular steel core) impermeable to air and resistant to the temperature of liquid iron.
  • the shell 12-core 14 assembly is completed by suction means.
  • the core 14 is applied to its surface 13 in the shell 12 by a metallic annular suction plate 18.
  • the plate 18 has an annular suction groove 19 opening towards the flange 14a of the core 14, above the annular space 16. In the groove 19 there opens a conduit 20 connected through a tap 21 to a source d suction not shown.
  • the suction plate 18 is fixed to the shell 12, for example by screws.
  • the extractor of the cast iron pipe being formed is not shown. It comprises a circular metal plate 22 called a lifting plate, of axis XX, integral with the suction plate 18.
  • the plate 22 is fixed to the plate 18 for example by screws and is connected to a lifting rod 23 of axis XX, suspended from a vertically guided lifting device, not shown.
  • the central relief 5 of the invention for example frustoconical, has dimensions of large base such that the top of the central relief 5 is located inside the cavity of the skirt 15 of the core 14, au- above the upper end of the die 6-7 or of the jacket 6. It is advantageous that the relief 5 is higher than the die 6-7, in FIG. 1 as in FIG. 3, because this makes it possible to limit the volume of liquid iron to an annular space over the entire height of the jacket 6 of the die 6-7 whereas if the central relief 5 was clearly lower than the jacket 6, there would be liquid iron above the top of the relief 5 and therefore an unnecessary excess of liquid iron.
  • Liquid iron supply the tap 21 of the suction pipe 20 is closed. Liquid iron is introduced along arrow f into the funnel 4. Liquid iron F is brought to a level N located at the upper part of the jacket of the die 6-7, immersing the skirt 15 and the tubular core 17 of core 14 but remaining below the top of the central relief 5.
  • Liquid iron rapidly fills the annular space 16 from the socket to the porous flange 14a of the core 14.
  • the central relief 5 can be a body attached to said siphon block and sealed thereon.
  • the blind recess internal recess of the central relief 5 is replaced by an open cavity 10a passing right through, axially, the relief 5, opening at the top of the central relief 5, and opening towards the outside on the underside from socket 1 of the siphon block 1-2-3-4.
  • this cavity 10a opening a passage from the outside to the inside of the tube T in formation, it is possible to introduce a CN tool for controlling the level of liquid metal or else a CE tool for measuring the thickness of the tube formed by measuring its internal diameter since its external diameter is known, or else a CT bath temperature measurement tool.
  • the tools CN, CT and CE symbolically represented by dashed lines are given as examples to illustrate the possibility of access or visit inside the tube T, thanks to this passage cavity 10a.
  • the level N since it is in this example a supply of liquid metal by a siphon block with communicating vessels constituted by the crucible 6-7 on the one hand and the vertical chimney 3 on the other hand, it is certain that one can detect or measure the level N from the outside, by the chimney 3, at least outside the periods of reloading in liquid iron according to the arrow f But we will see in other variants where there is no system of communicating vessels, that it is useful to be able to access the level of liquid iron from the inside.
  • the liquid iron supply system is modified: the siphon block 1-2-3-4 is replaced by a pressure casting ladle 24 of the teapot type with oblique filling chute closed by a cover 25.
  • a pouring tube vertical 26 made of refractory material passes through the upper wall of the closed pocket 24. It plunges almost to the bottom of the pocket 24 and protrudes above the upper wall of the pocket 24 over a short length along which it is surrounded and reinforced with a frustoconical nozzle 27 of axis XX of connection with an interlocking complementary frustoconical 28 of axis XX to the lower part of the base la to make the pouring tube 26 communicate with the cavity 10b or 10c of the central relief 5.
  • the central relief 5 is hollowed out leaves by a cavity to allow the rising crossing of the liquid iron and its discharge inside the crucible formed by the die 6-7 and the base la over the top of the central relief 5.
  • the relief 5 can be given a hollow frustoconical shape of constant thickness with a recess cavity such as 10b. There is thus an enlarged mass of hot liquid iron at the bottom and axial part of the central relief 5.
  • the central passage cavity that is to say through the relief 5 a cylindrical shape of the same diameter as the inside diameter of the ascending pouring tube 26, according to the profile in phantom 10c.
  • a conduit 29 in communication with the interior of the pocket 24 at the top of the latter, above the level of the liquid metal F is connected to a source of compressed gas or to a discharge under the control of a tap 30.
  • the variant of FIG. 5 has the advantage of allowing better control and even automatic control of the supply of liquid iron under low pressure of a gas which may be air or an inert gas such as nitrogen or argon.
  • a gas which may be air or an inert gas such as nitrogen or argon.
  • the single vertical tube 26 of upward casting is replaced by a pair of tubes 26a and 26b of upward vertical casting which pass through the base 1b of the crucible formed by the die 6-7 is the base 1b and which open at the bottom of the crucible, in the annular space between the central relief 5 and the die 6-7.
  • the frustoconical connection nozzle 27 is replaced by annular support and spacers 31 surrounding each tube 26a, 26b and interposed between the ladle 24 and the base 1b.
  • the annular wedges 31 of support and spacing allow the axial cavity 10c of the central relief 5 to open at its lower part towards the outside and therefore to offer a passage for a tool to access the interior of the crucible by example using a CN level control tool.
  • This arrangement is particularly advantageous since it allows access to an invisible interior space since, in this example, it is between the central relief 5 and the core 17 of the skirt 15 of the nesting core 14.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Road Signs Or Road Markings (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Physical Vapour Deposition (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Furnace Charging Or Discharging (AREA)
EP84114695A 1984-01-10 1984-12-03 Dispositif d'alimentation en métal liquide pour installation de coulée continue verticale d'un tube métallique, notamment en fonte Expired EP0151723B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84114695T ATE32843T1 (de) 1984-01-10 1984-12-03 Metallzufuhr beim vertikalen stranggiessen von metallroehren, hauptsaechlich aus gusseisen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8400382A FR2557820B1 (fr) 1984-01-10 1984-01-10 Dispositif d'alimentation en metal liquide pour installation de coulee continue verticale d'un tube metallique, notamment en fonte
FR8400382 1984-01-10

Publications (2)

Publication Number Publication Date
EP0151723A1 EP0151723A1 (fr) 1985-08-21
EP0151723B1 true EP0151723B1 (fr) 1988-03-09

Family

ID=9300025

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114695A Expired EP0151723B1 (fr) 1984-01-10 1984-12-03 Dispositif d'alimentation en métal liquide pour installation de coulée continue verticale d'un tube métallique, notamment en fonte

Country Status (26)

Country Link
US (1) US4628987A (enrdf_load_stackoverflow)
EP (1) EP0151723B1 (enrdf_load_stackoverflow)
JP (2) JPS60148656A (enrdf_load_stackoverflow)
KR (1) KR900000785B1 (enrdf_load_stackoverflow)
AT (1) ATE32843T1 (enrdf_load_stackoverflow)
AU (1) AU580279B2 (enrdf_load_stackoverflow)
BR (1) BR8500089A (enrdf_load_stackoverflow)
CA (1) CA1251614A (enrdf_load_stackoverflow)
CZ (1) CZ281600B6 (enrdf_load_stackoverflow)
DD (1) DD229054A5 (enrdf_load_stackoverflow)
DE (1) DE3469687D1 (enrdf_load_stackoverflow)
EG (1) EG16950A (enrdf_load_stackoverflow)
ES (1) ES8700100A1 (enrdf_load_stackoverflow)
FI (1) FI77587C (enrdf_load_stackoverflow)
FR (1) FR2557820B1 (enrdf_load_stackoverflow)
GB (1) GB2160132B (enrdf_load_stackoverflow)
IN (1) IN163782B (enrdf_load_stackoverflow)
MX (1) MX162663A (enrdf_load_stackoverflow)
MY (1) MY100401A (enrdf_load_stackoverflow)
PL (1) PL143057B1 (enrdf_load_stackoverflow)
RO (1) RO90980B (enrdf_load_stackoverflow)
SK (1) SK278335B6 (enrdf_load_stackoverflow)
SU (1) SU1356954A3 (enrdf_load_stackoverflow)
UA (1) UA5949A1 (enrdf_load_stackoverflow)
YU (1) YU44481B (enrdf_load_stackoverflow)
ZA (1) ZA8546B (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2575683B1 (fr) * 1985-01-04 1987-01-30 Pont A Mousson Procede et installation pour la fabrication continue de tuyaux en fonte a graphite spheroidal a structure controlee
DE3736956A1 (de) * 1986-12-22 1988-07-07 Heide Hein Engineering & Desig Verfahren und vorrichtung zum kontinuierlichen giessen von metallstraengen aus hochschmelzenden metallen, insbesondere von stahlstraengen
RU2129933C1 (ru) * 1997-11-19 1999-05-10 Тярасов Герман Павлович Способ непрерывной отливки трубы путем гидрообъемного вибрирования и способ непрерывной отливки листа путем гидрообъемного вибрирования
RU2230625C1 (ru) * 2003-07-03 2004-06-20 Захаров Владимир Алексеевич Способ изготовления тонкостенных труб из меди и ее сплавов
RU2230624C1 (ru) * 2003-07-03 2004-06-20 Захаров Владимир Алексеевич Способ изготовления тонкостенных труб из меди и ее сплавов
RU2230623C1 (ru) * 2003-07-03 2004-06-20 Захаров Владимир Алексеевич Способ изготовления тонкостенных труб из меди и ее сплавов
CN105347456A (zh) * 2015-09-24 2016-02-24 中国核电工程有限公司 一种中和器
CN109513890B (zh) * 2018-10-10 2020-06-26 西安理工大学 一种具有a型石墨组织的空心铸铁管材的制备方法

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE702638C (de) * 1936-08-19 1941-08-06 Wieland Werke Akt Ges Vorrichtung zum ununterbrochenen Giessen von Metallrohren
GB492216A (en) * 1936-09-08 1938-09-16 Ver Leichtmetallwerke Gmbh Process of and apparatus for casting metal ingots
BE487759A (enrdf_load_stackoverflow) * 1946-07-02
DE1136797B (de) * 1960-12-31 1962-09-20 Schloemann Ag Exzentrisch in der Kokille rotierender Dorn zum Stranggiessen von Hohlkoerpern, insbesondere Rohren aus Metallen, beispielsweise Stahl
FI46810C (fi) * 1969-12-15 1973-07-10 Outokumpu Oy Laite tankojen, levyjen, putkien ym. ylöspäin suuntautuvaa valua varte n.
FI46693C (fi) * 1970-05-19 1973-06-11 Outokumpu Oy Laitesovitelma putkien, tankojen, levyjen ym. ylöspäin suuntautuvaa ja tkuvaa valua varten.
JPS4942212B2 (enrdf_load_stackoverflow) * 1971-10-28 1974-11-13
US4000773A (en) * 1976-02-09 1977-01-04 Gus Sevastakis Die assembly for continuous vertical casting of tubular metallic products
JPS52138018A (en) * 1976-05-14 1977-11-17 Hiroshi Hagiwara Continuous casting method of metal and device
GB1500327A (en) * 1976-08-18 1978-02-08 Ass Elect Ind Production of tubular ingots
GB1562003A (en) * 1977-07-05 1980-03-05 Mogilev Fiz Tekhn I Akad Nauk Continuous casting of hollow strands
US4278124A (en) * 1978-04-11 1981-07-14 Kawasaki Steel Corporation Method of producing hollow steel ingot and apparatus therefor
SU700277A1 (ru) * 1978-06-19 1979-12-03 Могилевское Отделение Физико-Технического Института Ан Белорусской Сср Устройство дл подачи металла в кристаллизатор
SU816678A2 (ru) * 1979-04-12 1981-03-30 Могилевское Отделение Физико- Технического Института Ah Бело-Русской Ccp Устройство дл подачи металлаВ КРиСТАллизАТОР
SU931282A1 (ru) * 1980-01-30 1982-05-30 Научно-Исследовательский Институт Специальных Способов Литья Установка непрерывного лить
US4355680A (en) * 1980-11-03 1982-10-26 Caterpillar Tractor Co. Method and apparatus for continuous casting of hollow articles
DE3207777C2 (de) * 1982-03-04 1984-09-06 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln Verfahren und Vorrichtung zum Rohrstranggießen von Metallen, inbes. Nickel- und Kobaltlegierungen
FR2523006A1 (fr) * 1982-03-12 1983-09-16 Pont A Mousson Filiere tubulaire pour la coulee continue d'un tube, a paroi mince, en fonte
ES521441A0 (es) * 1982-04-15 1984-01-16 Creusot Loire Procedimiento de fabricacion de un lingote hueco de acero.

Also Published As

Publication number Publication date
SK20185A3 (en) 1996-11-06
PL143057B1 (en) 1988-01-30
RO90980B (ro) 1987-02-28
AU3756285A (en) 1985-07-18
ATE32843T1 (de) 1988-03-15
YU44481B (en) 1990-08-31
FR2557820A1 (fr) 1985-07-12
SU1356954A3 (ru) 1987-11-30
MY100401A (en) 1990-09-17
EP0151723A1 (fr) 1985-08-21
GB2160132A (en) 1985-12-18
EG16950A (en) 1992-11-30
KR850005300A (ko) 1985-08-24
CZ281600B6 (cs) 1996-11-13
FI850067L (fi) 1985-07-11
PL251490A1 (en) 1985-09-24
GB2160132B (en) 1987-09-30
FR2557820B1 (fr) 1987-05-07
CA1251614A (fr) 1989-03-28
YU213584A (en) 1988-08-31
KR900000785B1 (ko) 1990-02-16
ES8700100A1 (es) 1986-10-16
AU580279B2 (en) 1989-01-12
JPS60148656A (ja) 1985-08-05
GB8431703D0 (en) 1985-01-30
FI77587C (fi) 1989-04-10
JPH02169169A (ja) 1990-06-29
US4628987A (en) 1986-12-16
BR8500089A (pt) 1985-08-13
FI77587B (fi) 1988-12-30
ZA8546B (en) 1985-08-28
CS20185A3 (en) 1996-08-14
JPH0420698B2 (enrdf_load_stackoverflow) 1992-04-06
SK278335B6 (en) 1996-11-06
DD229054A5 (de) 1985-10-30
UA5949A1 (uk) 1994-12-29
ES539430A0 (es) 1986-10-16
RO90980A (ro) 1987-02-27
MX162663A (es) 1991-06-13
DE3469687D1 (en) 1988-04-14
JPH0545345B2 (enrdf_load_stackoverflow) 1993-07-08
FI850067A0 (fi) 1985-01-07
IN163782B (enrdf_load_stackoverflow) 1988-11-12

Similar Documents

Publication Publication Date Title
EP0152754B1 (fr) Procédé de moulage en fonderie et moule pour la coulée de précision sous basse pression, avec modèle gazéifiable et moule en sable sans liant
FR2614813A1 (fr) Appareil et procede de coulee de metal a contre-gravite
FR2537897A1 (fr) Procede de coulee continue de metal
EP0151723B1 (fr) Dispositif d'alimentation en métal liquide pour installation de coulée continue verticale d'un tube métallique, notamment en fonte
EP0131263B1 (fr) Procédé et installation pour la coulée continue d'un tuyau en fonte à emboîtement
CA1268611A (fr) Dispositif d'alimentation rotative en fonte liquide d'une installation de coulee continue verticale d'un tuyau en fonte a graphite spheroidal
EP0088980B1 (fr) Installation de coulée continue avec filière tubulaire pour l'obtention d'un tube, à paroi mince, en fonte
EP0127521B1 (fr) Procédé et dispositif de traitement d'un métal liquide moulé sous basse pression, notamment pour l'inoculation de la fonte
CH628544A5 (fr) Procede et installation pour la coulee continue de produits tubulaires.
LU82874A1 (fr) Procede et installation pour la fabrication continue d'ebauches creuses en metal
FR2464771A1 (fr) Procede et appareillage de coulee de metaux dans un moule fixe sur une cuve basculante
EP2490842B1 (fr) Procede pour fabriquer un lingot metallique comportant un alesage, lingot et dispositif de moulage associes
EP0242347A2 (fr) Dispositif pour la coulée d'un métal en phase pâteuse
CA1262612A (fr) Installation d'alimentation en metal liquide avec controle de temperature de metal liquide pour la coulee continue d'un tuyau en fonte
FR2496514A1 (fr) Dispositif de coulee centrifuge
BE519656A (enrdf_load_stackoverflow)
BE1000221A6 (fr) Dispositif pour la coulee d'un metal en phase pateuse.
FR2607738A3 (fr) Dispositif pour l'alimentation en metal en fusion des lingotieres de coulee continue
LU87914A1 (fr) Dispositif de brassage electromagnetique en lingotiere
CH362493A (fr) Dispositif pour la coulée continue horizontale d'un métal
BE417991A (enrdf_load_stackoverflow)
FR2835455A1 (fr) Procede de coulee d'un produit en fusion
FR2676670A1 (fr) Procede et dispositif de coulee d'un lingot creux metallique.
BE443187A (enrdf_load_stackoverflow)
FR2558589A1 (fr) Procede et appareil de mesure du niveau d'un liquide, tel que l'acier en fusion, recouvert d'une couche surnageante de laitier ou autre

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19850927

17Q First examination report despatched

Effective date: 19860915

RBV Designated contracting states (corrected)

Designated state(s): AT BE CH DE FR IT LI LU NL SE

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR IT LI LU NL SE

REF Corresponds to:

Ref document number: 32843

Country of ref document: AT

Date of ref document: 19880315

Kind code of ref document: T

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 3469687

Country of ref document: DE

Date of ref document: 19880414

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 84114695.4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19961121

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19961125

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19961201

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19961203

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19961218

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19961223

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19970116

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971231

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971231

BERE Be: lapsed

Owner name: S.A. PONT-A-MOUSSON

Effective date: 19971231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980701

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19980701

EUG Se: european patent has lapsed

Ref document number: 84114695.4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20021216

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20031205

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST