EP0131263B1 - Procédé et installation pour la coulée continue d'un tuyau en fonte à emboîtement - Google Patents

Procédé et installation pour la coulée continue d'un tuyau en fonte à emboîtement Download PDF

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Publication number
EP0131263B1
EP0131263B1 EP84107854A EP84107854A EP0131263B1 EP 0131263 B1 EP0131263 B1 EP 0131263B1 EP 84107854 A EP84107854 A EP 84107854A EP 84107854 A EP84107854 A EP 84107854A EP 0131263 B1 EP0131263 B1 EP 0131263B1
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EP
European Patent Office
Prior art keywords
core
die
socket
pipe
tubular
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
EP84107854A
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German (de)
English (en)
French (fr)
Other versions
EP0131263A1 (fr
Inventor
Yves Gourmel
Michel Pierrel
Rio Bellocci
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 AT84107854T priority Critical patent/ATE29404T1/de
Publication of EP0131263A1 publication Critical patent/EP0131263A1/fr
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Publication of EP0131263B1 publication Critical patent/EP0131263B1/fr
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
    • B22D11/006—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 continuous casting of a cast iron pipe provided with an interlocking.
  • the invention is applicable to pipes of any thickness, it is particularly suitable for the manufacture of thin pipes.
  • the expression “thin pipe - applies to a pipe whose thickness / diameter ratio is low, less than 10%, rather than to the thickness itself considered in isolation, since the latter, depending on the diameters, can vary from less than 5 mm (diameter 80 mm) to less than 15 mm (diameter 1,000 mm).
  • the invention relates more precisely to the continuous ascending casting of a pipe with interlocking from a metal bath.
  • the Applicant has posed the problem of obtaining an interlocking pipe by continuous ascending casting, without core or mandrel, for the formation of the internal cylindrical cavity of the pipe to be obtained.
  • the subject of the invention is a process for the continuous vertical ascending casting of a cast iron pipe, of the type in which a crucible-tank supplied with liquid metal at source is used, said crucible-reservoir, with cylindrical wall, constituting a die. giving the shape of the barrel of the pipe, the die is cooled externally and a tubular body is generated by ascending extraction of solidified metal, step by step, out of the die, this process being characterized in that for the manufacture of a pipe with interlocking first forms the interlocking and a primer of the barrel by raising the liquid iron in the annular space between a shell giving the external shape of the interlocking and a core giving the internal shape of the interlocking.
  • the invention also relates to an installation for the implementation of this process, this installation of the type comprising a crucible constituted by a tubular die and by a bottom made of refractory material which leads to a supply duct for liquid iron, this installation being characterized in that the tubular die is surmounted by a steel shell giving the outside shape of the socket and carrying a socket core of porous refractory material permeable to gases giving the inside shape of the socket and initiating that of the cylindrical cavity of the barrel of the pipe to be obtained, said shell and said nesting core flaring upwards, coaxially with the graphite tubular die, said core comprising a tubular skirt immersed by its lower end over a certain corresponding depth at part of the height of the die and at the beginning of the barrel of the pipe to be obtained.
  • a cast iron pipe, with interlocking can be produced in a simple manner, therefore reliable and inexpensive, with a low thickness / diameter ratio, and by obtaining a good surface condition not only externally as known. in itself thanks to the tubular die but still internally, despite the absence of mandrel or core and annular space over the entire height of the tubular die.
  • the cast iron is sucked up to form the nesting and is brought into source by means of a siphon block.
  • the supply of cast iron is carried out at the source, under low gas pressure, without suction.
  • the invention is applied to the continuous ascending casting of a cast iron pipe T, with interlocking, said pipe being thin because the thickness / diameter ratio is low, less than 10%, the thickness of the barrel is that is to say of the tubular part adjacent to the socket, not exceeding 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.
  • Liquid iron feed by siphon block (1-2-3-4-5): -
  • a hollow base 1 made of refractory material, for example of the silico-aluminous type, internally comprises an L-shaped casting conduit with a horizontal or slightly oblique leg 2, and with a foot 3, vertical, of axis XX for a source supply. from the crucible.
  • the base 1 is enhanced by a vertical chimney 4 of axis YY parallel to the axis XX of the foot 3.
  • the chimney 4 communicates at its lower part with the leg 2 of the casting conduit and ends at its upper part with a pouring funnel 5 with axis YY.
  • the height of the chimney 4 is equal to that of the crucible or of the die 6 described below (chimney 4 and crucible 6 forming communicating vessels).
  • the 1-2-3-4-5 assembly is called a siphon block.
  • the supply takes place at the source, that is to say from the bottom or the bottom of the die 6.
  • the base 1 carries a crucible constituted by a tubular die 6 made of graphite of axis XX and by the base 1 constituting a frustoconical tank bottom 7 flared in obtuse angle slightly less than 180 ° towards the foot 3 of the casting conduit which opens into the hollow of said tank bottom 7.
  • the tank bottom 7 is not cooled.
  • the die 6 is cooled externally by a jacket 8, for example made of copper, with circulation of cooling water, which enters via a conduit 9 and leaves via a conduit 10.
  • the jacket 8, 'in contact with the die 6, is arranged so as to wrap the die 6 over almost its entire height with the exception, however, of its lower part which must remain uncooled.
  • annular support plate 11 of the jacket 8 made of refractory material, for example of the silico-aluminous type, therefore thermally insulating, is interposed between the jacket 8 and the base 1, in order to avoid cooling of the base 1 by shirt 8.
  • the die 6 is surmounted or extended at its upper part by an annular metal shell 12, for example made of steel, of axis XX, flared upwards, the cavity of which gives the external profile for fitting the pipe T to be obtained.
  • the shell 12 has at its lower part adjacent to the upper part of the die 6 the same thickness and the same inside and outside diameters as the die 6 with a view to the connection without discontinuity with the die 6 (continuity of the extension of the inner wall of the die 6 through the inner wall of the shell 12). Only the lower part of the shell 12 fits into the upper part of the cooling jacket 8 for mounting reasons. However, to achieve airtightness, a sealing bead 6a is interposed between the die 6 and the shell 12.
  • the bead 6a is for example obtained by pouring an epoxy resin adhesive on the upper edge of the die 6.
  • the shell 12 is not externally cooled by water. It is cooled only by the ambient air. However, the shell 12 can also be cooled by water, for example by spraying water jets, not shown.
  • the shell 12 comprises above the molding cavity proper an enlarged frustoconical bearing 13 of axis XX intended to receive the flange of an annular nesting core 14 made of porous molding sand, for example a hardened mixture of sand and thermosetting resin.
  • the core 14 which gives the internal molding profile of the fitting of the pipe T comprises a tubular skirt 15 whose external wall corresponds to the internal wall of the pipe T to be obtained.
  • the core 14 has a length or height greater than that of the shell 12 so that the skirt 15 extends downwards beyond the shell 12, over a certain height of the die 6, at the upper part thereof. this.
  • the skirt 15 thus provides with the die 6 an annular space 16 corresponding to the thickness of the pipe T to be formed, and this for the reasons explained below.
  • the core 14 made of porous sand necessarily has a coating 17 that is airtight and resistant to the temperature of metal or liquid iron.
  • This coating 17 is for example a tubular steel core.
  • the covering 17 has the same total length or height as the core 14 made of porous sand.
  • 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 of the core 14 made of porous sand, the groove 19 being adjacent to said flange. In the groove 19 opens a conduit 20 connected through a tap 21 to a suction source not shown.
  • the annular suction plate 18 is fixed to the shell 12, for example by screws.
  • a lifting plate of axis XX, secured to the suction plate 18 to which it is fixed for example by screws, and secured to a lifting rod 23, of axis XX, suspended from a vertically guided lifting device, not shown.
  • Liquid metal feed (Fig. 1):
  • liquid cast iron is introduced according to arrow 24 into the funnel 5 for casting.
  • the valve 21 of the suction pipe 20 is closed.
  • the base 1 and the crucible constituted by the die 6 are filled until the level of liquid iron N reaches at N the upper part of the die 6 or of the crucible corresponding to the upper part of the annular cooling jacket. 8.
  • the jacket 8 is traversed by a stream of water. By the principle of communicating vessels, the level N is the same in the die 6 and the funnel 5.
  • the skirt 15 of the nesting core 14 as well as the tubular core 17 of the core 14 are immersed in liquid iron, which is contained in the capacity of the crucible or of the die 6.
  • the immersion takes place under a certain depth sufficient to prevent that, in the next phase of molding of the interlocking, air trapped in the cavity of the core tubular 17, is not sucked through the conduit 20 passing under the skirt 15 and passing through the liquid cast iron then the annular space 16 between the core 14 and the shell 12.
  • the suction valve 21 is opened and the air contained in the annular space 16 is aspirated using the conduit 20 suction of the circular groove 19, through the porous flange 14a of the core. Thanks to the waterproof steel core 17, there is no suction effect in the tubular cavity located inside the core 17. Thus, the suction is limited to the annular space 16. This suction limitation is also obtained by immersing, over a certain height, the skirt 15 of the core and the corresponding tubular core 17, below the level N of the liquid iron.
  • Liquid iron rises rapidly in the annular space 16 of the socket, which it fills up to the porous flange 14a of the core 14.
  • the molding of the socket is practically instantaneous (duration less than one second).
  • the level drops in the interior space of the tubular core 17 and of the skirt 15 of the core 14, and in the funnel. 5.
  • the level of cast iron does not drop below the core 17 and the skirt 15 which remain immersed in the liquid cast iron in order to preserve a sort of airtight hydraulic seal.
  • the socket 16 thus molded solidifies from the top, that is to say from the flange 14a of the core 14.
  • the level of liquid iron which has just fallen is completed, by pouring iron into the funnel 5 along arrow 24 during the solidification of the socket.
  • the suction valve is closed 21.
  • the liquid iron included in the annular space between the skirt 15 and the die 6 (upper part) and the shell 12 (lower part) cools both under the influence of the upper part of the cooling jacket 8 and under the influence of the shell 12.
  • This cooling results in a solidification along a solidification front S of roughly frustoconical shape, starting from the wall of the die 6 at the level of the lower end of the cooling jacket 8 to converge towards the vertical axis XX to the lower end of the skirt 15 of the core 14.
  • the extractor is actuated, that is to say the whole of the lifting plate 22 and of the shell 12, upwards (arrow f in FIG. 4), while pouring liquid iron in the funnel 5 according to arrow 24 to replace the liquid iron which will be ent taken out of the crucible 6. Care is thus taken to keep the level N of liquid iron constant during the extraction, a little below the upper part of the die 6, at a height where the iron is still cooled by the envelope. 8.
  • the upward extraction of the solidified socket E in solidarity with the shell 12, the suction plate 18, the extractor lifting plate 22 and the core 14, is carried out discontinuously, not step by step.
  • the shell 12 moves away step by step from the die 6.
  • a barrel primer has formed in the annular space 16 between the skirt 15 of the core 14 and the shell 12. This barrel primer tapers along roughly the profile S to the lower end of the cooling jacket 8 (Fig. 3 and 4).
  • the first climb stroke of the E-shell 12-core 14 interlocking assembly corresponds to a fraction of the height of cast iron being solidified below the barrel leader between skirt 15 and casing 8. It is for example of one to several centimeters. The beginning of the barrel therefore lengthens by a few centimeters of solidified cast iron taken from crucible 6. At the first stroke of short duration succeeds a stop of cooling and solidification of the cast iron mounted at the upper part of the die 6, which is carried out under the same conditions as above and is followed by a second upward stroke of the same amplitude as the first. The races of the same amplitude and the stops of the same duration follow one another thus, while continuing to "feed the tube T in formation by a supply of liquid iron in the funnel 5 according to arrow 24 (Fig.
  • the E-shell 12-core 14 interlocking assembly Shortly after the first race, the E-shell 12-core 14 interlocking assembly is sufficiently distant from the die crucible 6 so that the skirt 15 of the core 14 is no longer immersed in the liquid iron (FIG. 4).
  • the cast iron in the course of solidification is that which, at level N, is cooled externally by the jacket 8 and internally by the atmosphere internal to the cavity of the core 14 and of the pipe primer T.
  • the front of solidification S extends to the height of the lower end of the cooling jacket 8 where the thickness of solidified cast iron is zero.
  • the lifting or ascending extraction step by step continues to cause a new tubular portion of low height following the adjacent solid portion of pipe T. These ascents are interrupted by solidification stops.
  • the outside wall of the pipe T which forms follows the inside wall of the die 6.
  • the inside wall of the pipe T which forms no longer marries any wall since there is no longer any core.
  • the source supply in liquid iron, continues by pouring iron in the direction of arrow 24 to compensate for the removal of iron from the upper part of the die crucible 6, and to keep constant the level N below the part upper of the die 6, at a height still subject to the influence of the casing 8, so as to maintain the cooling conditions with a view to forming a regular pipe barrel T.
  • the pipe T is then raised to a height such that its lower end leaves the die 6. After the abovementioned rapid emptying, the lower end is cut so that the pipe T has a precise length and the end edge lower section is regular, possibly profiled.
  • the shell 12 is removed by sliding it along the barrel of the pipe T and out of the barrel and the core 14 is broken in sand by recovering the tubular core 17 in steel.
  • the method of the invention consists in causing the liquid metal to rise (by suction) in an annular space 16 between shell 12 and core 14 giving the form of the fitting of the pipe and the start of a thick barrel e from a source of liquid metal (crucible or die 6) supplied from the source, to solidify the liquid metal from the top in this annular space and according to a film or skin in contact with the wall of the tank or of the die of crucible 6 which is cooled, the skin having a thickness decreasing downwards or increasing upwards up to a maximum value e equal to the annular width of the barrel between skirt 15 of core 14 and shell 12, to be left said skin thicken over time by solidification up to said maximum value e, and to regularly extract step by step this solid skin upwards by removing the liquid metal from the crucible or from die 6 while continuing to feed the crucible made of liquid metal.
  • the removal of metal from the crucible is compensated by keeping the level of liquid metal constant by source supply, by siphon.
  • filling is carried out both by suction and under pressure of the annular space 16 between the shell 12 and the porous core 14 , i.e. complete filling without leaving pockets or bubbles of gas or air trapped in space 16.
  • the suction is made possible and is limited to the annular space 16 between the shell 12 and the core 14.
  • This beautiful surface finish extends not only externally, thanks to the die 6, when the core 14 has moved away from the die 6 (Fig. 4) but also internally, despite the absence of the core 14, thanks to the maintenance in temperature of the uncooled lower end of the die 6 in contact with the liquid metal and the plate 11, thanks to the regular ascents, of small amplitude, interspersed with regular cooling stops ensuring regular conditions for forming annular sections solidified from barrel to the upper part of the die 6 and thanks to the regular thermal conditions of solidification.
  • a cast iron pipe T with interlocking E whose barrel has a small thickness compared to the diameter, for example a thickness of 4 mm for a pipe of diameter 80 mm, a thickness of 7 mm for a pipe with a diameter of 300 mm, said pipe diameter being the inside diameter of the die 6.
  • This process and this installation ensure a high production rate, with relatively simple production means and easy operation.
  • the bottom of the crucible is not cooled, so that it is always a hot liquid iron which can rise to the upper part of the die crucible 6.
  • the shell 12 is left in place on the die 6 during extraction (Fig. 5, 6 and 7) and l 'internal means are provided for gripping and extracting the pipe T in formation.
  • a shell 25 similar to the shell 12 but having the following modifications: it comprises at its lower part of smaller diameter a flange 26 intended to be fixed on the upper edge of the cooling jacket 8 by screws.
  • the shell 25 instead of being fixed at its upper part of larger diameter to the annular suction plate 18, the shell 25 carries on its upper end edge a sealing bead 27, for example made of mastic or silicone , or in epoxy resin adhesive intended to seal the plate 18 and the shell 25 in an airtight manner without preventing the detachment and the removal of the plate 18 during extraction.
  • the core 14 is provided with a skirt 15a modified in the following manner (Fig.
  • the skirt 15a is indented at its lower part, at regular intervals around its periphery, and its indentations are filled until they are flush with the lower end edge of the tubular core 17a by portions of metal end pieces 28 in the form of cylindrical sectors , for example four or six.
  • These end portions 28 constituting internal jaws have on their internal concave face in contact with the core 17a a portion of circular rib 29 projecting from said concave face and engaging in a removable manner on a continuous circular groove 30 of the tubular core 17a; the rib portions 29 are therefore placed in the vicinity of the skirt 15a of the core 14.
  • the end portions 28 have on their external convex face, which extends and is flush with the external convex wall of the skirt 15a, a hooking protuberance 31 with a demoldable profile, for example in the form of a pair of portions of circular beads 31 projecting from the external convex walls of the skirt 15a and portions of end pieces 28.
  • the metallic core 17a is itself indented by slots 32 regularly distributed over the circular periphery, which are filled by tongues of sand with complementary core 33 forming part of the skirt 15a of the core 14.
  • Each tab of sand 33 has a angle at the center at least equal to that of the end portions 28.
  • the sand tongues 33 in number equal to the end portions 28 are also provided with attachment beads 31 of identical profile to the beads 31 with which the portions d ends 28 so as to form a pair of complete circular beads 31.
  • the formation of the interlocking pipe T E is similar to that of the previous example.
  • the difference in operation lies in the entrainment of the pipe T being formed during extraction and in demolding: as soon as the plate 18 integral with the extractor is raised using the lifting rod 23 not shown. (Fig. 6), it moves away from the shell 25 which remains fixed to the cooling jacket 8 by its flange 26 however that it causes upward the fitting E by the core 14 and by the portions of end pieces 28 as well as the core sand tabs 33.
  • the pipe is rotated around the axis XX relative to the annular plate 18 in order to break the core 14 and the tongues 33 and to occupy the empty locations left by the tongues 33, by the portions of end pieces 28 which, at the first pull of the pipe T relative to the plate 18, can retract centripetally.
  • the pipe T is therefore released from the shell 25 during the extraction since it slides inside the latter, during the extraction, which avoids an additional operation of removing the shell 25 on along the barrel once the T pipe is fully formed.
  • the siphon block 1-2-3-4-5 is replaced by a pressure casting pocket 34 of the teapot type, with oblique filling chute 35 closed by a cover 36.
  • a vertical pouring tube 37 made of refractory material passes through the upper wall of the closed pocket 34. It almost dives to the bottom of the pocket 34 and protrudes above the upper wall over a short length along which it is surrounded and reinforced with a frustoconical nozzle 38 of axis XX of connection with a complementary frustoconical interlocking 39 of axis XX to the part lower of the base 1a for communicating the pouring tube 37 with the cavity of the crucible or of the die 6.
  • a conduit 40 in communication with the interior of the pocket 34 at the top of the latter, above the level of the liquid metal M (of cast iron, for example) is connected under the control of a tap 41 to a source of compressed gas (e.g. compressed air) or to a landfill.
  • a source of compressed gas e.g. compressed air
  • the annular plate 18a is modified relative to the plate 18 by removing the groove 19 and the suction duct 20.
  • the procedure is as in the first example but with a different mode of supply of liquid metal.
  • the annular space 16 is first filled by raising the pressure in the ladle 34 to cause the liquid iron to rise in the tube 37 and filling all the space 16, and the pressure is constantly increased while making jog the fitting E obtained, as in the first example.
  • the annular space 16 is therefore no longer filled by suction.
  • the pressure in the pipe 40 is only suddenly released when the pipe T has reached a sufficient length.
  • the shell 12 can also be replaced by the interlocking shell 25, and the core 14 with skirt 15 by the core 14 with skirt 15a as in FIGS. 5, 6, 7, 8, 9.
  • the temperature of the siphon block 1-2-3-4-5 is controllable and even likely to be raised by heating by electrical induction, in particular of the duct 2-3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Continuous Casting (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Joints With Sleeves (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Document Processing Apparatus (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Saccharide Compounds (AREA)
  • Exhaust Silencers (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP84107854A 1983-07-12 1984-07-05 Procédé et installation pour la coulée continue d'un tuyau en fonte à emboîtement Expired EP0131263B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84107854T ATE29404T1 (de) 1983-07-12 1984-07-05 Verfahren und vorrichtung zum stranggiessen von gusseisernen muffenroehren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8311788A FR2548935B1 (fr) 1983-07-12 1983-07-12 Procede et installation pour la coulee continue d'un tuyau en fonte a emboitement
FR8311788 1983-07-12

Publications (2)

Publication Number Publication Date
EP0131263A1 EP0131263A1 (fr) 1985-01-16
EP0131263B1 true EP0131263B1 (fr) 1987-09-09

Family

ID=9290849

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84107854A Expired EP0131263B1 (fr) 1983-07-12 1984-07-05 Procédé et installation pour la coulée continue d'un tuyau en fonte à emboîtement

Country Status (23)

Country Link
US (1) US4611651A (cs)
EP (1) EP0131263B1 (cs)
JP (1) JPS6054265A (cs)
KR (1) KR900002034B1 (cs)
AT (1) ATE29404T1 (cs)
AU (1) AU572524B2 (cs)
BR (1) BR8403462A (cs)
CA (1) CA1205274A (cs)
CZ (1) CZ279835B6 (cs)
DD (1) DD220527A5 (cs)
DE (1) DE3465905D1 (cs)
EG (1) EG16580A (cs)
ES (1) ES8504514A1 (cs)
FI (1) FI74896C (cs)
FR (1) FR2548935B1 (cs)
IN (1) IN161533B (cs)
MX (1) MX167420B (cs)
PL (1) PL141488B1 (cs)
RO (1) RO89018A (cs)
SU (1) SU1395135A3 (cs)
UA (1) UA5951A1 (cs)
YU (2) YU43848B (cs)
ZA (1) ZA844915B (cs)

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CN105964965A (zh) * 2016-06-02 2016-09-28 高原 锁体连铸一次成型工艺
CN106392026A (zh) * 2016-11-07 2017-02-15 南昌专腾科技有限公司 金属复合材料成型装置及工艺

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GB8703231D0 (en) * 1987-02-12 1987-03-18 Wilson R Casting furnaces
GB8808186D0 (en) * 1988-04-08 1988-05-11 Wilson R Continuous casting
US5575422A (en) * 1994-07-12 1996-11-19 Peterman; Glenn Extruded reinforced mailbox
DE4426705C1 (de) * 1994-07-20 1995-09-07 Mannesmann Ag Inversionsgießeinrichtung mit Kristallisator
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
FR2751249B1 (fr) 1996-07-17 1998-09-04 Pont A Mousson Dispositif de positionnement d'un bloc-filiere d'une table de coulee d'une machine de coulee continue verticale ascendante
KR100405515B1 (ko) * 2000-12-22 2003-11-14 재단법인 포항산업과학연구원 보조 주형을 이용한 강괴 주조방법
GB0403411D0 (en) * 2003-11-25 2004-03-24 Unilever Plc Process to prepare a shaped solid detergent
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

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DE958950C (de) * 1951-04-27 1957-02-28 Eisenwerke Gelsenkirchen Ag Anfahrstueck zum Stranggiessen
DE1070787B (cs) * 1956-03-15
US3287773A (en) * 1963-12-03 1966-11-29 Amsted Ind Inc Method of level control for continuous casting
FR1504671A (fr) * 1966-10-20 1967-12-08 Amsted Ind Inc Procédé de coulée continue
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JPS5785656A (en) * 1980-11-19 1982-05-28 Kawasaki Steel Corp Method for producing plural hollow blank materials for pipe making simultaneously
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105964965A (zh) * 2016-06-02 2016-09-28 高原 锁体连铸一次成型工艺
CN106392026A (zh) * 2016-11-07 2017-02-15 南昌专腾科技有限公司 金属复合材料成型装置及工艺
CN106392026B (zh) * 2016-11-07 2018-05-08 南昌专腾科技有限公司 金属复合材料成型装置及工艺

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DE3465905D1 (en) 1987-10-15
SU1395135A3 (ru) 1988-05-07
JPH0120950B2 (cs) 1989-04-19
EP0131263A1 (fr) 1985-01-16
IN161533B (cs) 1987-12-19
CZ541684A3 (en) 1995-04-12
BR8403462A (pt) 1985-06-25
ES534229A0 (es) 1985-04-16
US4611651A (en) 1986-09-16
FR2548935B1 (fr) 1986-07-11
FI842759A7 (fi) 1985-01-13
KR850002784A (ko) 1985-05-20
MX167420B (es) 1993-03-22
PL248670A1 (en) 1985-04-09
FI74896B (fi) 1987-12-31
UA5951A1 (uk) 1994-12-29
FR2548935A1 (fr) 1985-01-18
YU117687A (en) 1990-10-31
DD220527A5 (de) 1985-04-03
PL141488B1 (en) 1987-07-31
FI74896C (fi) 1988-04-11
EG16580A (en) 1990-12-30
ES8504514A1 (es) 1985-04-16
CA1205274A (en) 1986-06-03
YU43848B (en) 1989-12-31
RO89018A (ro) 1986-04-30
YU121284A (en) 1988-04-30
AU3036584A (en) 1985-01-17
AU572524B2 (en) 1988-05-12
JPS6054265A (ja) 1985-03-28
ATE29404T1 (de) 1987-09-15
YU45825B (sh) 1992-07-20
FI842759A0 (fi) 1984-07-10
CZ279835B6 (cs) 1995-07-12
ZA844915B (en) 1985-02-27
KR900002034B1 (ko) 1990-03-31

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