EP0187609B1 - Dispositif d'alimentation rotative en fonte liquide d'une installation de coulée continue verticale d'un tuyau en fonte à graphite sphéroîdal - Google Patents

Dispositif d'alimentation rotative en fonte liquide d'une installation de coulée continue verticale d'un tuyau en fonte à graphite sphéroîdal Download PDF

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Publication number
EP0187609B1
EP0187609B1 EP85470001A EP85470001A EP0187609B1 EP 0187609 B1 EP0187609 B1 EP 0187609B1 EP 85470001 A EP85470001 A EP 85470001A EP 85470001 A EP85470001 A EP 85470001A EP 0187609 B1 EP0187609 B1 EP 0187609B1
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EP
European Patent Office
Prior art keywords
cast iron
crucible
molten cast
iron
reservoir
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
EP85470001A
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German (de)
English (en)
French (fr)
Other versions
EP0187609A1 (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
Publication of EP0187609A1 publication Critical patent/EP0187609A1/fr
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Expired 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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • 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
    • B22D11/11—Treating the molten metal
    • B22D11/114—Treating the molten metal by using agitating or vibrating means
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/114—Treating the molten metal by using agitating or vibrating means
    • B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
    • 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
    • B22D11/11—Treating the molten metal
    • B22D11/116—Refining the metal
    • B22D11/118—Refining the metal by circulating the metal under, over or around weirs
    • 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 spheroidal graphite cast iron pipe, without the use of a core to form the pipe cavity.
  • the invention relates more particularly to a device for supplying liquid iron to a tubular die giving the external shape of the pipe, either from a siphon block (source supply), or from a ladle. under low gas pressure.
  • the problem is posed of rotating a mass of liquid cast iron, at a speed lower than the centrifugation speed, with the aim of homogenizing and regulating the supply, inside a cooled tubular die. and fixed, giving the external shape of the tube to be generated, without the use of a core.
  • the problem is to maintain a permanent movement of rotation of the liquid iron in the fixed and cooled tubular die in order to regularize the thickness of the iron tube obtained on each circular section of this tube and thus obtain inner walls and completely concentric exterior.
  • the invention relates to a device for feeding a fixed tubular die, which solves this problem.
  • This rotary liquid iron supply device for a vertical continuous casting installation of a spheroidal graphite cast iron pipe, comprising a cooled die constituting a crucible-reservoir for liquid cast iron, crucible from which a cast iron pipe to spheroidal graphite must be generated, and means for rotating the mass of liquid iron contained in said crucible-reservoir, is characterized in that the crucible-reservoir of liquid iron has a central refractory relief of the same vertical axis as the crucible -tank to reduce the mass of liquid iron to an annular mass.
  • said impulse or rotation means are hydraulic means.
  • the device of the invention is then characterized in that it comprises at the base of the crucible-reservoir at least one tangential inlet conduit for liquid iron which opens into the crucible-reservoir for liquid iron.
  • This tangential supply of liquid iron can be subjected to rhythmic pulsations which favor a slow rotation of the liquid iron.
  • These means for rotating may also be gaseous, with the use of a gaseous fluid chemically inert with respect to the cast iron (argon, nitrogen).
  • said means are magnetic.
  • the supply device of the invention is characterized in that it comprises magnetic means housed inside the hollow central relief providing, with the cooled die, an annular chamber of liquid iron, over a higher height. to that of the annular volume of liquid cast iron, in order to create a magnetic field rotating around the axis of the die and of the central relief over the entire height of the annular mass of liquid cast iron.
  • the impulse or rotary drive means are mechanical.
  • the rotary feeding device of the invention is characterized in that it internally has a hollow central relief, in the axis and through the cavity thereof, a vertical rotating shaft carrying at its part upper of the vertical arms of refractory material immersed in the annular mass of liquid cast iron in order to cause it to rotate.
  • the invention is applied to the continuous upward casting of a cast iron pipe T, said pipe being thin because the thickness / diameter ratio is low, less than 10%.
  • the thickness of the barrel, i.e. of the tubular part already centering at nesting does not exceed 15 mm for a diameter of 1000 mm, 8 mm for a diameter of 300 mm and 5 mm for a diameter of 80 mm.
  • a teapot-type pressure casting ladle with a filler neck 2, oblique, closed by a cover 3 contains liquid iron F.
  • a vertical pouring tube 4 made of refractory material passes through the upper wall of the closed teapot pocket 1. The tube 4 plunges almost to the bottom of the pocket 1 and rises well above the upper wall of the pocket to lead into the crucible-reservoir of the cooled die, described below, below which is placed the ladle 1.
  • the ascending pouring tube 4 is tightly connected with the upper wall of the teapot ladle by a frustoconical nozzle 5 with flange, of axis XX like the tube 4.
  • the frustoconical nozzle 5 is also used for the connection of the ascending flow 4 of axis XX with the siphon block described below.
  • the tangential orifice 18 has a smaller cross-sectional area than that of the ascending pouring tube 4.
  • the base 6 serves as a support for the vertical casting conduit constituted by a vertical chimney 9 of axis YY parallel to the axis XX of the tube of vertical pouring 4.
  • the vertical chimney 9 communicates at its lower part with the horizontal leg of the pouring duct 7 and ends at its upper part with a pouring funnel 10 of axis YY.
  • the height of the chimney 9 is equal to that of the crucible-reservoir or of the die which is discussed below.
  • the chimney 9 and the crucible-tank form communicating vessels.
  • the horizontal duct 7 for casting has a diameter smaller than that of the tube 4. This supply assembly 6-7-9-10 is called blocksiphon.
  • the base 6 of the siphon block carries a crucible constituted by a tubular die 11 in graphite of axis XX and by the base 6 itself constituting an uncooled bottom of the tank 12 .
  • the die 11 is cooled externally by a jacket 13, for example made of copper, with circulation of cooling water which enters via a pipe 14 and leaves via a pipe 15.
  • the jacket 13, in contact with the die 11, is arranged so as to wrap the die 11 over almost its entire height with the exception, however, of its lower part which remains uncooled.
  • an annular support plate 16 of the liner 13, made of refractory material, for example of the silico-aluminous type, therefore thermally insulating, is interposed between the liner 13 and the base 6, in order to avoid cooling of the base 6 by the cooling jacket 13.
  • the volume of the crucible-reservoir 11-6 constituted by the die 11 and the base 6 is substantially reduced and reduced to an annular volume by a central relief 17 of axis XX, coaxial with the pouring tube ascending 4, and crossed by it.
  • the use of the central relief 17 is particularly advantageous for the casting of a tube T of large diameter.
  • the central relief 17 is an integral part of the siphon block 6-7-9-10 and of the crucible-reservoir constituted by the combination of the base 6 and the cooled tubular die 11.
  • the central frustoconical relief 17 has a large base, au- below the support constituted by the base 6, of diameter substantially less than the internal diameter that one wants to obtain for the tube T to be formed.
  • the small upper base of the frustoconical central relief 17 has a diameter substantially smaller than that of the cavity of the pipe T to be obtained.
  • the relief 17 is advantageous for the relief 17 to be higher than the die 11 because this makes it possible to limit the volume of liquid iron to an annular space over the entire height of the die 11 whereas if the central relief 17 was significantly lower than the die 11 there would be liquid iron above the top of the relief 17 and therefore an unnecessary excess of liquid iron.
  • the central relief 17 is hollowed right through, from its upper face to the lower face of the base 6 by a cylindrical cavity for the passage of the complementary pouring tube of the frustoconical nozzle 5 which adjusts in this interlocking.
  • the tangential orifice 18 of the pouring duct 7 in L opens at the bottom, that is to say near the bottom of the annular volume of the crucible-reservoir 6-11, tangentially.
  • the section for the passage of liquid iron through the vertical pouring tube 4 is as large as possible (axial supply of liquid iron under gas pressure)
  • the extractor of the cast iron pipe being formed is not shown. It comprises a means for gripping the nascent cast iron pipe, for example a tubular mannequin or steel sleeve as described in patent application 84 00 382, said gripping means or mannequin M being caught between rollers or rollers E of guidance and drive up.
  • the latter For attaching or securing the nascent tube T to the mannequin M, the latter comprises a dovetail notch M1.
  • Non-rotating main supply, under gas pressure, to fill the crucible-tank with die 11 and bottom 12 with cast iron F pressurized fluid is introduced through the conduit 32 into the teapot pocket 3.
  • the cast iron F rises to- above the central relief 17, pours into the annular space between the central relief 17 and the die 11 and rises in the vertical chimney 9 where the liquid iron is introduced from the orifice 18 and the horizontal leg of the conduit of casting 7.
  • the mannequin M is introduced into the die 11 from above. While the die 11 is not cooled at its lower end, it is instead cooled over most of its height, to its upper end, by the cooling jacket 13.
  • the cast iron therefore solidifies at contact of the die in increasing thickness up to the mannequin M in contact with which it solidifies and on which it is hooked by the notch M1.
  • the mannequin M is then pulled upwards by rollers or rollers E for driving and guiding.
  • the rollers E driven by a stepping motor, cause the dummy M to rise in spurts.
  • the mannequin M drives the solidified part of the iron upwards, step by step.
  • the temperature of the liquid cast iron contained in the crucible-reservoir 11-12 is homogenized and the thickness of the pipe T is regulated on the circular section of the barrel of the pipe T in training.
  • Said circular section therefore has perfectly concentric inner and outer walls.
  • the upward extraction of the solidified T pipe is carried out discontinuously, step by step, as described in patent application 8 400 382.
  • the barrel primer of the T pipe lengthens at each climb stroke printed by the rollers or rollers E according to a constant thickness over the entire circular section of the barrel, thanks to the slow rotation due to the tangential supply of liquid iron by the vertical chimney 9 and the orifice tangential 18.
  • the homogenization of the bath temperature is to a certain extent linked to the regularization of the thickness of the barrel formed with slow rotation of the liquid iron due to the solidification process of the liquid iron.
  • the iron is a eutectic liquid, the solidification is very different from that of steels during solidification, the cast iron does not undergo the phenomenon of segregation and does not comprise a solid and liquid mixture.
  • Cast iron is a eutectic liquid which suddenly passes from the liquid phase to the solid phase, without mixing the two phases and without dendrite.
  • the Applicant has found that smaller thicknesses were obtained where the bath was warmer and greater thicknesses by homogenizing and regulating the temperature of the bath by rotation of the liquid iron. By this rotation it also obtains a more regular thickness on a circular section.
  • a central relief 34 blind at its upper part replaces the central relief 17 of FIG. 1. It comprises a cavity 35 for housing electromagnets or magnets 36 carried by a rotary shaft 37 of vertical axis XX which is that of the central relief 34 and of the crucible and reservoir 11-12. Inside the cavity 35, the magnets 36 and the shaft 37 are protected from any contact with the liquid iron. The magnets 36 extend over the entire height of the mass of liquid cast iron F.
  • the rotary shaft 37 is rotated by a geared motor group 38.
  • Liquid cast iron is supplied by siphon block with vertical chimney 9, horizontal duct 7, opening at the lower part of the annular volume of liquid cast iron comprised between the central relief 34 and the die 11, possibly by a tangential orifice 18 as in fig. 1. But, in this case, due to the use of magnetic means such as electromagnets or rotary magnets 36, tangential orifice 18 is optional.
  • the liquid iron supply duct can simply open out at the bottom 12 of the crucible-reservoir 11-12.
  • the barrel of the pipe T is formed in the same way as in the previous example of FIGS. to 2 with the only difference that the liquid iron, from the start only comes from the siphon block with vertical chimney 9 and that the slow rotation of the liquid iron takes place either only by the rotation of the electromagnets 36 or by the combined action of driving the electromagnets in rotation 36 and the tangential arrival of the liquid iron through a tangential orifice 18 if one is provided, as in FIG. 4.
  • a central relief 39 of axis XX, tubular, replaces the reliefs 17 and 34 above.
  • the relief 39 is traversed right through by a cylindrical cavity 40 of axis XX, itself crossed with clearance by a rotary shaft 41 of axis XX driven in rotation by a geared motor group 42.
  • the rotary shaft 41 carries to its upper part is a horizontal plate 43, or horizontal arms 42 at the peripheral edge from which or at the peripheral ends from which hang vertical graphite bars 44, for example two, three or four or more depending on the dimensions of the tray or arms 43 and the height of which is sufficient for their lower end to be immersed in the liquid iron of the crucible-reservoir 11-12 near the bottom 12 of the crucible-reservoir 11-12.
  • the liquid cast iron is supplied only by siphon block as in the example in FIG. 4, optionally with tangential orifice 18 at the bottom 12 of the crucible-reservoir 11-12. Inside this cavity 40, the shaft 41 is protected from any contact with liquid iron.
  • Gaseous fluidic means for rotating the liquid iron at low speed in rotation can also be used according to different exemplary embodiments illustrated in FIGS. 6 to 11:
  • the liquid cast iron is supplied by siphon block 7-9-10.
  • the duct 7 opens out at the bottom 12 of the annular volume comprised between the central relief 17 and the die 11 by a non-tangential orifice 8.
  • an inert gaseous fluid such as for example nitrogen or argon is brought tangentially near the bottom of the annular volume of liquid iron comprised between the die 11 and the central relief 17.
  • the gaseous fluid for rotating the liquid iron is brought for example by two horizontal nozzles 45 mounted tangentially to the cylindrical cavity of the crucible-reservoir and to the cylindrical cavity 46 of the die 11, in the extension of the cylindrical internal wall of the die 11, in the mass of the base 6 and in the vicinity of the bottom 12.
  • Each of the two nozzles 45 comprises a plug or a porous frustoconical nozzle 47 mounted at the bottom of an orifice also frustoconical which opens tangentially into the cavity 46, the nozzle porous 47 being of refractory material, for example silicoaluminous, (a sort of rammed earth with a large particle size to have a suitable porosity), a cylindrical sleeve 48 of the same diameter as the large base of the porous nozzle 47, the sleeve 48 being of material refractory and passing through the wall thickness of the base 6, coaxial with the nozzle 47, and, in the axis of the cylindrical sleeve 48, a duct 49 for supplying gaseous fluid to the porous nozzle 47, the duct 49 being connected to a source of gaseous fluid under pressure, not shown.
  • a duct 49 for supplying gaseous fluid to the porous nozzle 47, the duct 49 being connected to a source of gaseous fluid under pressure, not
  • a closure plate 50 is applied on the outer end edge of the cylindrical sleeve 48 and on a boss 51 coming from the body with the base 6 or else attached to the latter.
  • the closing plate 50 is crossed by the conduit 49.
  • tangential injection nozzles are used directly blowing the inert gaseous fluid into the liquid iron contained in the crucible-reservoir 11-12 .
  • Each injection nozzle is constituted by a frustoconical nozzle made of refractory material and is traversed by a conduit 53 and opening tangentially in a mouth 54 which is flush with the bottom 12 of the tank of the crucible-reservoir 11-12 devoid of central relief.
  • the tangential injection nozzles 52 are eight in number.
  • Each supply pipe 53 for supplying an injection nozzle 52 opens into a circular groove 55 serving as a distributor of inert gas under pressure.
  • a single external conduit 56 controlled by a valve 57 brings the inert gaseous fluid under pressure to the circular groove 55.
  • the circular groove for distributing and distributing inert gaseous fluid 55 is provided in the base 6, at the lower part thereof. .
  • the liquid cast iron is supplied as in the example in FIG. 8 by teapot pocket and ascending pouring tube 4 emerging at the bottom 12 of the crucible-reservoir 11-12 in the axis XX of said crucible-reservoir.
  • the injection nozzles 52 inject large gas bubbles into the liquid iron. But as the nozzles 52 open at the bottom 12 of the crucible-reservoir 11-12, instead of opening on the cylindrical wall of the crucible-reservoir 11-12, they reduce the friction of the liquid cast iron in rotation on the bottom 12. In addition , if the gas bubbles are injected at high speed, the kinetic energy for rotating the liquid iron is higher.
  • this variant uses as in FIG. 1 a tangential feed means.
  • the central relief 17 creating a volume of annular liquid iron in the crucible-reservoir 11-12 has disappeared, but it could just as easily exist.
  • the existence or the absence of the central relief 17 depends on the diameter of the pipe T to be formed.
  • the tangential supply of liquid iron near the bottom 12 of the crucible-reservoir 11-12 is carried out by a particular device of siphon block with pocket 58 under gas pressure.
  • the pocket 58 of liquid iron F is of the skimmer type, comprising a vertical partition 59, a chamber 60 with a closed vault, receiving at its upper part at gas pressure by a conduit 32 controlled by a tap 33 from a well 61 open to its upper part by a funnel 62 for filling with liquid iron following an arrow f.
  • the chamber 60 and the filling well 61 communicate through an orifice 63 formed in the lower part of the partition 59.
  • the skimmer pocket 58 comprises at the lower part of the chamber 60 a horizontal or nearly horizontal pouring chute 64, of which the pouring duct is connected to the base 6 and opens tangentially into the cylindrical cavity 46 of the crucible-reservoir 11-12, near the bottom 12 of said crucible-reservoir by a tangential orifice 65.
  • the level of liquid pig iron in the crucible-reservoir 11-12 can vary between an upper level N situated at the upper part of the die 11 and a lower level N1 situated below the level N, not far from the top of the die 11 ; these upper N and lower N1 levels in the die 11 correspond to the same upper N and lower N1 levels in the well 61 of the skimmer bag 58, by effect of communicating vessels through the orifice 63 and the pouring chute 64. On the other hand, these upper N and lower N1 levels in the die 11 correspond to a lower level N2 in the chamber 60 and an upper level N3 which are different from N and N1.
  • a maximum gas pressure P1 is required while to obtain the lower level N1 in the die 11, corresponding to the upper level N3 in the chamber 60 of pocket 58 requires minimum gas pressure P2.
  • the level of N2 to N is raised in the crucible tank 11-12, by introducing liquid iron following the arrow f into the well 61 of the skimmer pocket 58.
  • the gas pressure in the chamber 60, through the conduit 32 is varied periodically and regularly between the maximum value P1 and a minimum value P2 while continuing to renew the liquid iron in the well 61 during step-by-step extraction.
  • a gas pressure pulse is made according to the sinusoidal curve of FIG. 14 which is a diagram of the variation in gas pressure P admitted by the conduit 32 into the chamber 60 as a function of time t.

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  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Continuous Casting (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Furnace Charging Or Discharging (AREA)
  • General Induction Heating (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Nozzles (AREA)
  • Chutes (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Toys (AREA)
  • Pens And Brushes (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Road Signs Or Road Markings (AREA)
  • Road Paving Structures (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP85470001A 1984-12-07 1985-11-27 Dispositif d'alimentation rotative en fonte liquide d'une installation de coulée continue verticale d'un tuyau en fonte à graphite sphéroîdal Expired EP0187609B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8418862 1984-12-07
FR8418862A FR2574328B1 (fr) 1984-12-07 1984-12-07 Dispositif d'alimentation rotative en fonte liquide d'une installation de coulee continue verticale d'un tuyau en fonte a graphite speroidal

Publications (2)

Publication Number Publication Date
EP0187609A1 EP0187609A1 (fr) 1986-07-16
EP0187609B1 true EP0187609B1 (fr) 1989-08-23

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EP85470001A Expired EP0187609B1 (fr) 1984-12-07 1985-11-27 Dispositif d'alimentation rotative en fonte liquide d'une installation de coulée continue verticale d'un tuyau en fonte à graphite sphéroîdal

Country Status (29)

Country Link
US (1) US4690199A (ko)
EP (1) EP0187609B1 (ko)
JP (1) JPS61137655A (ko)
KR (1) KR900002035B1 (ko)
AT (1) ATE45691T1 (ko)
AU (1) AU566125B2 (ko)
BR (1) BR8506133A (ko)
CA (1) CA1268611A (ko)
CZ (1) CZ279837B6 (ko)
DD (1) DD246928A5 (ko)
DE (1) DE3572453D1 (ko)
EG (1) EG17404A (ko)
ES (1) ES8701643A1 (ko)
FI (1) FI78630C (ko)
FR (1) FR2574328B1 (ko)
GB (1) GB2168633B (ko)
HR (1) HRP930760B1 (ko)
IN (1) IN166053B (ko)
MX (1) MX167024B (ko)
MY (1) MY103671A (ko)
PL (1) PL147384B1 (ko)
RO (1) RO94202B (ko)
SI (1) SI8511899A8 (ko)
SK (1) SK278337B6 (ko)
SU (1) SU1435144A3 (ko)
TR (1) TR22824A (ko)
UA (1) UA5952A1 (ko)
YU (1) YU44532B (ko)
ZA (1) ZA859288B (ko)

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FR2748278B1 (fr) * 1996-05-02 1998-05-29 Pont A Mousson Procede et installation de metallisation de tuyaux en fonte
FR2751250B1 (fr) * 1996-07-17 1998-08-21 Pont A Mousson Dispositif de bridage d'une table de coulee d'une machine de coulee continue verticale de pieces, en particulier de tubes, en fonte
NL1023849C2 (nl) * 2003-07-08 2005-01-11 Corus Technology B V Werkwijze en inrichting voor de productie van buizen en een pijpleiding.
FI124847B (fi) 2009-11-18 2015-02-13 Upcast Oy Jatkuvavalusuulake, muottiosa, jatkuvavalumenetelmä sekä jatkuvavalusuulakkeella, muottiosalla tai jatkuvavalumenetelmällä valmistetun tangon, langan tai putken käyttö aihiona
CN103691906A (zh) * 2013-11-30 2014-04-02 雄邦压铸（南通）有限公司 一种复杂内壁压铸辅助件
BR202017015434Y1 (pt) * 2017-07-18 2022-03-03 Tupy S.A Contramolde para dispositivo de fundição contínua de barra metálica oca
BR102017015433B1 (pt) * 2017-07-18 2023-04-18 Tupy S.A. Sistema para a produção de um componente de ferro por lingotamento contínuo
CN113399634A (zh) * 2021-05-24 2021-09-17 佛山市三水凤铝铝业有限公司 一种铝合金圆管铸造结晶设备及其方法

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NL7605585A (nl) * 1976-05-25 1977-11-29 Hoogovens Ijmuiden Bv Inrichting voor het verwisselen en/of repareren van een doorloopzittingsteen in een staalgiet- pan.
FR2352612B1 (fr) * 1976-05-26 1980-11-14 Pont A Mousson Procede et installation pour la coulee continue par centrifugation de produits tubulaires en fonte notamment
GB1562003A (en) * 1977-07-05 1980-03-05 Mogilev Fiz Tekhn I Akad Nauk Continuous casting of hollow strands
DE2749405C2 (de) * 1977-11-04 1982-05-27 Korf-Stahl Ag, 7570 Baden-Baden Metallstranggießverfahren, insbesondere Stahlstranggießverfahren und Vorrichtung zur Durchführung des Verfahrens
FR2419781A1 (fr) * 1978-03-17 1979-10-12 Perie Rene Machine de coulee continue pour tubes
LU79444A1 (fr) * 1978-04-14 1979-11-07 Arbed Procede et installation pour la fabrication d'ebauches creuses
GB2048139B (en) * 1979-05-09 1983-01-06 Arbed Continuous casting of tubes
LU82874A1 (fr) * 1980-10-20 1982-05-10 Arbed Procede et installation pour la fabrication continue d'ebauches creuses en metal
US4355680A (en) * 1980-11-03 1982-10-26 Caterpillar Tractor Co. Method and apparatus for continuous casting of hollow articles
JPS5785653A (en) * 1980-11-19 1982-05-28 Kawasaki Steel Corp Continuous casting method for hollow blank material for clad pipe
JPS5823540A (ja) * 1981-08-06 1983-02-12 Kawasaki Steel Corp 造管用中空鋳片の連続鋳造法および鋳造鋳型
JPS5823541A (ja) * 1981-08-06 1983-02-12 Kawasaki Steel Corp 造管用中空素材の製造方法
FR2537470A2 (fr) * 1982-01-13 1984-06-15 Vallourec Rotor magnetique pour coulee continue de corps creux

Also Published As

Publication number Publication date
FR2574328A1 (fr) 1986-06-13
FI78630B (fi) 1989-05-31
KR860004672A (ko) 1986-07-11
CS890985A3 (en) 1992-01-15
PL147384B1 (en) 1989-05-31
SU1435144A3 (ru) 1988-10-30
MX167024B (es) 1993-02-19
YU44532B (en) 1990-08-31
AU5079585A (en) 1986-11-27
ES8701643A1 (es) 1986-12-01
ZA859288B (en) 1986-08-27
US4690199A (en) 1987-09-01
FI854737A0 (fi) 1985-11-29
HRP930760B1 (en) 1996-04-30
CA1268611A (fr) 1990-05-08
BR8506133A (pt) 1986-08-26
DD246928A5 (de) 1987-06-24
JPS61137655A (ja) 1986-06-25
JPH0464771B2 (ko) 1992-10-16
EG17404A (en) 1991-03-30
RO94202A (ro) 1988-06-30
TR22824A (tr) 1988-08-17
DE3572453D1 (en) 1989-09-28
PL256661A1 (en) 1986-10-07
UA5952A1 (uk) 1994-12-29
ES549672A0 (es) 1986-12-01
MY103671A (en) 1993-08-28
SK278337B6 (en) 1996-12-04
GB8528944D0 (en) 1986-01-02
IN166053B (ko) 1990-03-03
FI854737A (fi) 1986-06-08
GB2168633B (en) 1989-06-07
AU566125B2 (en) 1987-10-08
SI8511899A8 (en) 1996-06-30
ATE45691T1 (de) 1989-09-15
CZ279837B6 (cs) 1995-07-12
FR2574328B1 (fr) 1987-01-09
GB2168633A (en) 1986-06-25
EP0187609A1 (fr) 1986-07-16
KR900002035B1 (ko) 1990-03-31
YU189985A (en) 1988-06-30
FI78630C (fi) 1989-09-11
RO94202B (ro) 1988-07-01

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