EP0213042A2 - Vorrichtung zum Schutz eines flüssigen Giesstrahls gegen Oxydation und/oder Nitrierung - Google Patents

Vorrichtung zum Schutz eines flüssigen Giesstrahls gegen Oxydation und/oder Nitrierung Download PDF

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Publication number
EP0213042A2
EP0213042A2 EP86401792A EP86401792A EP0213042A2 EP 0213042 A2 EP0213042 A2 EP 0213042A2 EP 86401792 A EP86401792 A EP 86401792A EP 86401792 A EP86401792 A EP 86401792A EP 0213042 A2 EP0213042 A2 EP 0213042A2
Authority
EP
European Patent Office
Prior art keywords
shells
jet
sleeve
shell
distributor
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.)
Granted
Application number
EP86401792A
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English (en)
French (fr)
Other versions
EP0213042B1 (de
EP0213042A3 (en
Inventor
Jean Foulard
Jacques Nicolas
Jean-François Mignot
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.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Priority to AT86401792T priority Critical patent/ATE56642T1/de
Publication of EP0213042A2 publication Critical patent/EP0213042A2/de
Publication of EP0213042A3 publication Critical patent/EP0213042A3/fr
Application granted granted Critical
Publication of EP0213042B1 publication Critical patent/EP0213042B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B22D37/00—Controlling or regulating the pouring of molten metal from a casting melt-holding vessel
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/106—Shielding the molten jet

Definitions

  • the present invention relates to a method of protection against oxidation and / or nitriding of a jet of liquid metal flowing from the outlet orifice of a pocket or a distributor in an oscillating ingot mold, method in which the casting jet is surrounded, over at least part of its height, with a sleeve into which a gas protecting the liquid metal is injected so as to limit the contact of the latter with the ambient air between the orifice and the oscillating ingot mold.
  • It also relates to a device for implementing such a method as well as to the use of this device.
  • the invention applies more particularly to continuous casting, in particular to continuous casting of small dimensions.
  • Continuous casting installations generally include one or more vertical jets which fall into a vertically oscillating mold.
  • the liquid metal is likely to oxidize and / or to nitride. Consequently, it has already been envisaged to protect the metal against such reactions by surrounding it, for most of its free fall, with a sheath or crown of neutral gas such as argon, nitrogen, carbon dioxide, etc.
  • a sheath or crown of neutral gas such as argon, nitrogen, carbon dioxide, etc.
  • the devices known at present have a certain number of drawbacks, in particular with regard to the difficulties of sealing, setting up, keeping over time and preserving the protective neutral gas.
  • Devices of this type include a circular sleeve surrounding the pouring jet, a sleeve widening at its lower part so as to come to rest on the table surrounding the oscillating ingot mold, the internal diameter of the lower part of said sleeve being, here again, greater than the width of the oscillating ingot mold. If this avoids the entry of air from below and therefore the phenomenon of progressive dilution of the shielding gas during its descent along the casting jet, it generates with such a system, a significant suction from above. Ambiant air. Indeed, the shielding gas sent downwards, in the same direction as the casting jet, cannot oppose the aspiration of ambient air, taking into account the significant differences in gas temperatures near the jet and ambient air. Turbulence is thus created near the pouring jet and the latter is thus, in places, directly in contact with the ambient air. In the absence of any indication as to the flow rate of shielding gas, it is not possible to thus achieve the aim set by the invention.
  • the present invention aims to remedy these drawbacks by providing an effective protection method as well as a device which can be easily installed during the flow of the liquid metal. and making it possible to obtain, for low gas consumption, excellent metallurgical results.
  • the protection method according to the invention is characterized in that the protective sleeve is integral with the pocket or the distributor and has a length such that the maximum distance D 1 between its lower end and the oscillating ingot mold, when the latter is in the low position, is less than 100 millimeters and in that the protective gas is injected into the sleeve so as to surround the pouring jet and escape towards the outside by the lower end of said sleeve with an average speed of gases evacuated near the lower end of the sleeve of between about 0.7 m / s and 5.5 m / s, so as to limit, on the one hand, the dilution of the shielding gas with the air in one any point located near the casting jet and, on the other hand, the suction of ambient air towards the casting jet.
  • the distance D 1 is less than or equal to 80 min.
  • the sleeve has a circular section in the plane perpendicular to the casting jet, the diameter D 2 of the sleeve at its lower part is preferably less and at most equal to the width of the oscillating ingot mold.
  • a collar placed near the lower part of the sleeve will be used, surrounding said sleeve substantially over its entire periphery, the diameter D 2 of the sleeve being chosen so that the diameter D 3 of the collar is preferably smaller and at most equal to the width of the oscillating ingot mold, this flange being preferably oriented parallel to the opening of the ingot mold.
  • the sleeve is provided, in its lower part, with a flare over its entire periphery, the diameter of the sleeve being chosen to be so that the diameter D 4 of the flare is preferably less than the width of the oscillating ingot mold.
  • the device according to the invention comprises, under the bottom and around the outlet orifice, an opening inerting shell, formed of two half-shells, which can be applied against the bottom of the pocket and / or the distribution basket and which injects shielding gas at low velocity, uniformly around the metal jet over most of its height; this is carried out in such a way that the sealing of the junction plane of the half-shells guarantees good sealing throughout the metal jet.
  • a suitable aerodynamic device such as a flange or a lower flaring making it possible to reduce the dilution and / or the aspiration of the protective gas by the ambient air.
  • the device according to the invention is characterized in that the means for surrounding the pouring jet consist firstly of two complementary half-shells and secondly of means of articulation of said half-shells allowing the opening and closing of these.
  • the aerodynamic deflection means preferably comprise a flange formed of two half-flanges, each integral with a half-shell, and / or a chamfered part, located at the lower end of the internal wall of each half-shell in direction of an external wall.
  • the flange and / or the chamfer will be replaced by a flaring of the lower part of the shells.
  • the junction planes of the two half-shells partially overlap so as to improve the tightness of the shell.
  • the device according to the invention comprises a concentric sheath placed around the half-shells and formed of two complementary half-sheaths, each being integral with its corresponding half-shell, the space between the sheath and the half-shells being connected to means for injecting a protective gas.
  • the device comprises at its upper part at least one annular seal making it possible to seal between the shell and the tundish under which it is to be placed.
  • the device When the device is intended to be coupled to a flow distributor around the pouring orifice thereof, it can cooperate with a circular ferrule, integral with the distributor and intended to improve the gas tightness of the coupling.
  • the articulation means of the half-shells are constituted by a hinge.
  • the articulation means of the half-shells consist of a set of articulated arms making it possible to move the half-shells away from each other, said articulated arms being controlled by control means.
  • a movable arm which is integral with it at one end and connected to means for pressing said shell against the distributor.
  • gases used for protecting the casting jet against oxidation and / or nitriding are those usually used in such cases by those skilled in the art, such as nitrogen, argon, anhydride carbonic, etc ... used alone and / or in mixtures.
  • Figure 1 is a schematic sectional view of an embodiment of the device according to the invention as well as certain variants.
  • the protective device comprises a shell 1 consisting of two complementary half-shells 1A, 1B, as well as means for injecting protective gas, these means essentially consisting of a channel 8 of annular shape placed at the top of the shell 1, this channel 8 being provided with perforations 9 allowing the passage of gas from the supply lines 7A and 7B, respectively connected to the two annular half-channels 8A and 8B constituting the channel 8 and respectively integral with the two half shells 1A and 1B.
  • the device further comprises means for articulation of the half-shells, not shown in the figure. (the diameter, the position, the number of perforations will be determined experimentally by the person skilled in the art, by simple routine experiments, depending on the result that one wants to obtain and the flow rate of inert gas).
  • the distributor of which only the bottom 3 can be seen in the figure is provided with a ferrule 5 of shape complementary to the external shape of the channel 8, that is to say circular in the present case.
  • the annular channel 8 On its upper face, the annular channel 8 has a circular groove 48 in which is housed a seal 4 ensuring the seal between the distributor and the device according to the invention.
  • the two half-shells 1A and 1B partially overlap along the joint line 6, ensuring a seal thanks to a structure in the form of a baffle.
  • the inner wall 66 of the half-shell 1B is fixed radially to the latter, with a recess 72.
  • the internal wall 65 is fixed radially to the half-shell 1A, at the end of the latter. It also includes a recess 73, complementary to the recess 72, which thus form a baffle 67, 68 and 69 for the gas coming from inside the shell and which would escape towards the outside. With such a pressure drop, the gas, introduced in the form of a laminar flow into the shell through the openings 9, cannot practically escape through the side seal 6.
  • the reference 10A represents two alternative embodiments of the aerodynamic means according to the invention placed at the lower end of the shell 1.
  • the internal wall of the half-shell 1A is chamfered at approximately 45 °, on the one hand, a flange 52 being fixed at the end, on the outer wall of the shell 1, while a flaring 352 of internal diameter D 4 extends the shells 1A, 1B, of internal diameter D 2 at their lower part.
  • the reference 10B shows an alternative embodiment of the walls of the shell 1 making it possible to further improve the gas protection.
  • the half-shells such as 1B, are surrounded, substantially from the base of the annular channel 8 at the lower end of the half-shell, by a sheath 70, arranged coaxially with the half-shells, so as to provide a space 71 which communicates with the annular gas supply channel 8 or gas distribution chamber.
  • This gas supply could be different if we wanted to create a gas duct of a different nature).
  • This sheath 70 preferably comprises an aerodynamic collar 52 at its base.
  • the protection device being designed in particular for continuous casting in ingot molds of small dimensions, it is not possible, in this case to introduce the lower end of the shell into the metal taking into account the respective dimensions of the jet, the shell and the opening of the mold. This is why, there is a clearance between the lower part of the shell and the pouring opening, this clearance also permitting the operation of the device during casting, if this proves necessary.
  • the inerting shell 1 centered on the pouring jet 2 is pressed against the bottom of the distributor 3, in an almost leaktight manner, using a seal 4 made of refractory or metalloplastic fibrous product, and / or thanks to the circular ferrule 5.
  • the two half-shells 1A and 1B are pressed one against the other and sealing between them is ensured by the baffle-shaped seal 6 over the entire length of the device.
  • Two gas inlets 7A and 7B, of sufficient diameter to guarantee a very low speed of supply of protective gas lead into the distribution chambers 8A and 8B.
  • the gas then flows in laminar mode through the holes 9 and sheaths the metal jet to the lower part of the shell.
  • Aerodynamic means are used to significantly reduce the dilution of the shielding gas with the ambient air and thus allow effective protection over a longer length of the metal jet.
  • They essentially consist of a chamfer (or a flare) of the interior wall and the addition of a deflector on the exterior wall of the shell 1.
  • the deflector moreover, results in better coverage of the upper part of the ingot mold thus ensuring greater efficiency of the inerting.
  • the dimensions and shape of the deflector can be adapted to the different formats of the molds.
  • a notch can be formed in a corner of the mold.
  • FIG. 2 is a perspective sketch showing the half-shells in the open position around the casting jet shown diagrammatically by the reference 102.
  • the protection device comprises two complementary half-shells 101A and 101B, surrounded at their upper part by complementary distribution chambers 108A and 108B of semi-annular shape, connected respectively to a gas supply not shown in the figure, and openings 109 regularly distributed over the surface of the corresponding half-shells 101A and 101B, so as to allow the passage of the shielding gas between the half-shells 101A and 101B and the casting jet 102.
  • the distribution chambers 108A and 108B are closed at their ends.
  • Each half-shell has at its lower part a half-flange 150A and 150B, complementary to each other.
  • the junction between the half-shells on the one hand and the half-flanges on the other hand is done using the junction planes 157 and 158 extending respectively from the base of the distribution chambers 108A and 108B to the half-flanges 150A and 150B.
  • These junction planes have the shape of a trapezoid-rectangle if the shell is cylindrical. (But this shell can also have the shape of a truncated cone).
  • the junction planes 157 and 158 have a thickness such that they overlap the joint plane of the two half-shells thus forming a cam baffle described in FIG. 1.
  • the half-flange 150B is slightly longer than the half-circumference of the half-shell 101B at its base. Conversely, the half-collar 150 A is slightly shorter than 101A. Thus, the half-flange 150B projects slightly beyond the junction planes 157 and 158, which makes it possible to extend the chicane joint at the level of the half-flanges.
  • the distribution chamber has two annular grooves 104 and 1040 to accommodate a seal with the base of the distributor.
  • Figure 3 shows two sectional views of the device of Figure 2, in the closed position.
  • the two half-shells 101A and 101B bear substantially one on the other at 160, 163, 260, 263, and delimit baffles 161, 162 and 261, 262 respectively.
  • Figure 3B which is a section along the axis AA of Figure 3A has the same references as Figure 3A.
  • FIG. 4A shows diagrammatically a first alternative embodiment of the assembly of the device according to the invention, provided with its means of control.
  • the shell 1 comprises a hinge 31 allowing the opening and closing of the half-shells around the pouring jet (not shown) in the opening 30 of the oscillating ingot mold.
  • the shell 1 is connected via 31 to a first arm 32 which pivots horizontally on a second arm 34 around the articulation 33. (movement 1).
  • the vertical arm 34 slides from bottom to top (movement 3 under the action of the jack 35, making it possible to press the device 1 onto the distributor (not shown).
  • 35 can be fixed to the casting table.
  • the jack 35 is fixed to the flow distributor 39 and is supplied with compressed air (for maneuvers) via 37 and inerting gas (argon and / or zote, and / or carbon dioxide) via 36.
  • the protection device is fixed on a support forming a protective gas pipe and comprising a movable part allowing the opening of the shells, this can be fixed on the wall of the pocket or of the distributor as well as on any support integral with its cradle, for such purpose to be able to operate the device in a manner integral with the pocket or the distributor; in some cases, it is possible to fix this assembly on the casting table.
  • the support arm is fixed on a journal allowing the exhaust of the jet protection device by a rotation of the latter.
  • a jack resting on the end of the arm applies the half-shell device to the bottom of the distributor, exerting a docking force of approximately 50 deca Newton, to ensure sealing as soon as the actuator goes into action to lower the device, the opening articulation is automatically biased by a spring which has been stretched when closing using a pushing arm held in place by a spring-controlled finger device.
  • FIG. 5 represents a preferred embodiment of the control means of the device according to the invention.
  • the two half-shells are shown diagrammatically by the references 401A and 401B in the open position corresponding to the position of the control means shown in the figure.
  • a support arm 435 whose end is bent on the side of the half-shell 401B which is fixed to it by a ball joint 462.
  • the latter is located substantially at the end of the straight part of arm 435.
  • the other half-shell 401A is secured, by the ball joint 461 to a plurality of articulated arms 489, the end 431 of which is bent around the half-shell 401A, connected to the arm 426 by the articulation 428, itself even connected to arm 423, 421 ending with a joystick controls 420.
  • the arm 423, 421 slides in a cylindrical guide 422 as well as in a cylindrical guide 424.
  • the return spring 432 fixed to the arm 426 at 433 on the one hand and to the arm 435 at 434 on the other hand holds the shells in the open position, the stop 425 secured to the arm 423, 421 pressing against the cylindrical guide 424 to limit the opening stroke.
  • the guides 422 and 424 are integral with the arm 423, itself fixed by its right end in the figure, to a carriage 450 sliding on a rail 451 in the direction of the arrow F.
  • An operating handle 437 is provided for controlling the rotation of the arm 435 about the axis 0 perpendicular to the plane of the figure.
  • the axis 436 allows rotation of the arm 435, so as to generate the movement of the shells so as to make them cross the plane of the figure.
  • the control lever 420 is pushed to the left in the direction of 422, causing the half-shells to close in the position shown diagrammatically in dotted lines. (a locking system keeps it in this position, unlockable manually).
  • the shell is placed under the distributor, for example using a jack which causes the arm 435 to rotate about the axis 436.
  • the half-shells initially, under the plane of the figure, have their upper face which passes above the plane of the figure.
  • the reference 401AB represents the two closed half-shells brought into this position after rotation of the arm 435 around the axis 0 (perpendicular to the plane of the figure), followed by a closing of the half-shells using 420 ( then rotation of 435 around axis 436).
  • a protective shell (or sleeve) with an internal diameter of 80 mm is used at its base without collar.
  • the nitrogen flow rate is 60 Nm 3 / h, the specific consumption 3 being approximately 5 Nm / tonne.
  • the lower part of the shell is placed at an average distance from the oscillating ingot mold equal to 50 mm.
  • the speed of ejection of the shell protection gas at the periphery of its lower part is approximately 1.5 m / s, and approximately 3.5 m / s along the jet.
  • the operation is carried out under the same conditions as above with a flow rate of 30 Nm / h.
  • the gas exit velocity at the periphery of the lower part of the shell is about 0.7 m / s, 1.7 m / s near the jet. Results are obtained slightly lower than the previous ones (the oxygen concentration curve equal to 1% between the lower part of the shell and the opening of the ingot mold is slightly closer to the casting jet than previously, but the latter remains perfectly protected).
  • the oxygen contents measured in the ingot mold generally remain above 1%.
  • the oscillations of the ingot mold induce a dilution such that it is generally not possible to obtain an oxygen content of less than 1%, at near the jet, in the mold.
  • Examples 1, 2 and 3 are repeated by adding a 6 mm flange around the shell with a chamfer at about 45 °, at its lower part, parallel to the opening of the mold.
  • the constant oxygen concentration curves around the casting jet are significantly more distant from the jet than the corresponding curves, in the absence of a collar, which means a slight improvement in the results.
  • the use of a flange can therefore be useful when seeking to further lower the oxygen concentrations near the jet.
  • Examples 1, 2 and 3 are repeated by forming a flare in the lower part of the shell, flare increasing the lower diameter by 12 mm (internal diameter at the lower part of the shell by approximately 92 mm).
  • a flare preferably of circular section, of height substantially equal to the increase in the radius of the shell. In the present case, this height is therefore substantially equal to 6 mm.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Continuous Casting (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Forging (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Disintegrating Or Milling (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Gas Separation By Absorption (AREA)
  • Chemically Coating (AREA)
  • Catching Or Destruction (AREA)
EP86401792A 1985-08-14 1986-08-11 Vorrichtung zum Schutz eines flüssigen Giesstrahls gegen Oxydation und/oder Nitrierung Expired - Lifetime EP0213042B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86401792T ATE56642T1 (de) 1985-08-14 1986-08-11 Vorrichtung zum schutz eines fluessigen giesstrahls gegen oxydation und/oder nitrierung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8512378 1985-08-14
FR8512378A FR2586210B1 (fr) 1985-08-14 1985-08-14 Dispositif de protection contre l'oxydation et/ou la nitruration d'un jet de metal liquide et son utilisation

Publications (3)

Publication Number Publication Date
EP0213042A2 true EP0213042A2 (de) 1987-03-04
EP0213042A3 EP0213042A3 (en) 1988-12-07
EP0213042B1 EP0213042B1 (de) 1990-09-19

Family

ID=9322225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86401792A Expired - Lifetime EP0213042B1 (de) 1985-08-14 1986-08-11 Vorrichtung zum Schutz eines flüssigen Giesstrahls gegen Oxydation und/oder Nitrierung

Country Status (13)

Country Link
US (1) US4805688A (de)
EP (1) EP0213042B1 (de)
JP (1) JPS6297759A (de)
KR (1) KR870001888A (de)
AT (1) ATE56642T1 (de)
AU (1) AU594354B2 (de)
BR (1) BR8603875A (de)
CA (1) CA1299837C (de)
DE (1) DE3674293D1 (de)
ES (1) ES2001086A6 (de)
FR (1) FR2586210B1 (de)
PT (1) PT83195B (de)
ZA (1) ZA866054B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642678A1 (fr) * 1989-02-07 1990-08-10 Air Liquide Procede d'elaboration d'une atmosphere gazeuse en contact avec un metal a haute temperature

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5421562A (en) * 1994-04-28 1995-06-06 General Motors Corporation Gas-shielded siphonic valve
US6228187B1 (en) 1998-08-19 2001-05-08 Air Liquide America Corp. Apparatus and methods for generating an artificial atmosphere for the heat treating of materials
US6491863B2 (en) 2000-12-12 2002-12-10 L'air Liquide-Societe' Anonyme A' Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes George Claude Method and apparatus for efficient utilization of a cryogen for inert cover in metals melting furnaces
KR100864444B1 (ko) * 2002-04-24 2008-10-20 주식회사 포스코 연속주조설비의 용강 산화방지장치
US20060266793A1 (en) * 2005-05-24 2006-11-30 Caterpillar Inc. Purging system having workpiece movement device
US20190210099A1 (en) * 2017-10-05 2019-07-11 Emirates Steel Industries PJSC Method for continuous casting of two or more long products using a single continuous casting strand

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3439735A (en) * 1965-11-19 1969-04-22 Union Carbide Corp Continuous casting apparatus with inert gas protector
DE2517834A1 (de) * 1975-04-22 1976-11-04 Linde Ag Stranggiessanlage
FR2331402A1 (fr) * 1975-11-12 1977-06-10 Linde Ag Installation de coulee
DE2738587A1 (de) * 1976-08-30 1978-03-02 Georgetown Steel Corp Abschirmvorrichtung fuer einen giessstrahl aus fluessigem metall
EP0089282A1 (de) * 1982-03-15 1983-09-21 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren und Vorrichtung zum Schutz eines Giessstrahls aus flüssigem Metall

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Publication number Priority date Publication date Assignee Title
US3616843A (en) * 1969-11-25 1971-11-02 Koppers Co Inc Apparatus for shrouding in a continuous casting machine
US4270595A (en) * 1978-09-08 1981-06-02 Georgetown Steel Corporation Shroud with replaceable extension
AT368415B (de) * 1979-02-20 1982-10-11 Voest Alpine Ag Einrichtung an einem metallurgischen gefaess mit einem schutzrohr
JPS5748307A (en) * 1980-09-05 1982-03-19 Toray Silicone Co Ltd Composition of defoaming agent
CH660700A5 (de) * 1983-08-12 1987-06-15 Finanz Handels Invest Fhi Abschirmvorrichtung fuer einen giessstrahl aus fluessigem material.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3439735A (en) * 1965-11-19 1969-04-22 Union Carbide Corp Continuous casting apparatus with inert gas protector
DE2517834A1 (de) * 1975-04-22 1976-11-04 Linde Ag Stranggiessanlage
FR2331402A1 (fr) * 1975-11-12 1977-06-10 Linde Ag Installation de coulee
DE2738587A1 (de) * 1976-08-30 1978-03-02 Georgetown Steel Corp Abschirmvorrichtung fuer einen giessstrahl aus fluessigem metall
EP0089282A1 (de) * 1982-03-15 1983-09-21 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren und Vorrichtung zum Schutz eines Giessstrahls aus flüssigem Metall

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642678A1 (fr) * 1989-02-07 1990-08-10 Air Liquide Procede d'elaboration d'une atmosphere gazeuse en contact avec un metal a haute temperature

Also Published As

Publication number Publication date
JPS6297759A (ja) 1987-05-07
ZA866054B (en) 1987-03-25
EP0213042B1 (de) 1990-09-19
US4805688A (en) 1989-02-21
DE3674293D1 (de) 1990-10-25
ES2001086A6 (es) 1988-04-16
ATE56642T1 (de) 1990-10-15
AU594354B2 (en) 1990-03-08
KR870001888A (ko) 1987-03-28
CA1299837C (fr) 1992-05-05
BR8603875A (pt) 1987-03-24
FR2586210A1 (fr) 1987-02-20
PT83195B (pt) 1992-10-30
AU6118286A (en) 1987-02-19
FR2586210B1 (fr) 1988-05-13
PT83195A (fr) 1986-09-01
EP0213042A3 (en) 1988-12-07

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