US3672429A - Method for the centrifugal casting of metal in a rotating horizontal shell - Google Patents

Method for the centrifugal casting of metal in a rotating horizontal shell Download PDF

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US3672429A
US3672429A US858057A US3672429DA US3672429A US 3672429 A US3672429 A US 3672429A US 858057 A US858057 A US 858057A US 3672429D A US3672429D A US 3672429DA US 3672429 A US3672429 A US 3672429A
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cavity
metal
mold
molten metal
shell
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Pierre Lajoye
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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
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/04—Centrifugal casting; Casting by using centrifugal force of shallow solid or hollow bodies, e.g. wheels or rings, in moulds rotating around their axis of symmetry

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  • ABSTRACT A process for centrifugal casting of metal components in a mold revolving around a vertical axis by supplying liquid metal into a cavity in the mold and rotating the mold to cause the liquid metal to be transferred radially outwardly in the cavity by centrifugal force, while simultaneously applying a vacuum to the cavity for degassing the molten metal during casting thereof to prevent oxidation of the molten metal while it is being supplied into the cavity through radial channels formed in the bottom there.
  • the present invention has the aim of avoiding these disadvantages by using a new process which allows the centrifugal casting of even very oxidizable liquid metal alloys to be carried out.
  • the process according to the invention for the centrifugal casting of metal components in a horizontal shell able to turn around a vertical axis, and into the center of which the liquid metal is poured is characterized in that a central cavity which receives the liquid metal is heated, the metal then being transferred without turbulence into the mould of the revolving shell, by the effect of centrifugal force.
  • the shell is left immobile during after pouring, until the surface of the bath is smooth and still, after which the oxides which are floating on the top are skimmed off, then finally the shell is set in rotation.
  • the shell is revolved whilst the liquid metal is fed in, and this feeding is carried out from the bottom through the center of the heated cavity.
  • the metal may be fed through a movable vertical tube, of which the lower end projects into the central cavity whilst the bottom of the mould has channels or vanes radiating around the center in the direction of the peripheral mould.
  • this feed from the bottom may be carried out by sending the metal up through a central hollow tube, the shell of the mould being surmounted at its center by a metal sleeve lined inside by refractive wallsto form a sullage piece where the oxides gather at the end of centrifuging, which allows a solid metallic plate to be centrifugally cast, there being finally on the bottom of the mould channels or vanes radiating in the direction of the peripheral mould.
  • the central cavity is permanently heated during casting to a temperature equal to or higher than that of the metal when it penetrates into this cavity, so that it is possible to flow from the bottom at a minimum temperature while the metal is heated in the cavity, which ensuresthat the metal is fed to the periphery of the revolving mound at a suitable temperature, and is at a higher temperature for the bore of the component to be made.
  • the speed of rotation of the mould is varied by a-programmer, while the central cavity is shaped so that the walls are steep. This, in particular, allows the metal to be poured rapidly in a single flow into the central cavity, after which the filling device is removed, the speed of rotation of the already loaded mould then being modified in one direction of the other according to a fixed program.
  • the mould is fed at the bottom by a rising channel is a vacuum which is as complete as possible, then this vacuum is applied to the metal to disengage it completely before and during the commencement of rotation of the mould, after which the metal injection channel is plugged and the mould is set into rotation whilst the vacuum is maintained.
  • the feed is from the bottom by making the molten metal rise by a complete vacuum, the metal being degassed during its ascent, after which the vacuum is broken which causes the fall of a valve previously recessed in the center of the cavity, the mould being finally set in rotation.
  • the device according to the invention for carrying out this process is characterized in that the bottom of the filling cavity has vanes, ribs or channels which radiate around the central axis in the direction of the peripheral mould, which they gradually join.
  • FIG. 1 is an axial section of a shell according to the invention, which is still motionless after the metal has been poured,
  • FIG. 2 is a corresponding view after setting in rotation
  • FIG. 3 is a variant in which the central filling cavity carries vanes totally submerged in the liquid metal
  • FIG. 4 is a section along IV--IV (FIG. 3),
  • FIG. 5 shows another variant with vanes which emerge
  • FIG. 6 shows an additional variant in which the filling cavity in annular, to allow large diameter flanges to be cast
  • FIG. 7 is an axial section of a device according to the invention, in which feeding from the bottom is carried out through the lower part of the shell in order to obtain a centrifuged metal plate,
  • FIG. 8 illustrates the variation in the transverse section of one of the radial channels
  • FIG. 9 is a plan view of these channels.
  • FIG. 10 is a plan view of a variant in the possible arrangement of the channels on the bottom of the shell.
  • FIG. I 1 shows a possible manufacturing variant of the crosssection of the radial channels
  • FIG. 12 shows another variant in which the channel is made in a detachable clay capping
  • FIG. 13 shows the method of filling with metal during feeding in order to case a plate
  • FIG. 14 shows a method of feeding from the bottom with vacuum suction in the upper part
  • FIGS. 15 and 16 show two successive phases when feeding from the bottom is carried-out through the upper part of the revolving shell
  • FIG. 17 illustrates more particularly the case of the centrifugal casting under vacuum of a hollow component with feeding from the bottom through the base
  • FIG. 18 shows a device designed to carry out from below the filling from the bottom of the mould under vacuum
  • FIG. 19 is a perspective view of a recessed valve which may be used in the case of FIG. 18,
  • FIG. 20 shows another variant for feeding at the bottom from below
  • FIG. 21 shows the process according to the invention for the casting of a centrifuged flange feeding at the bottom from above
  • FIG. 22 shows the principle according to which the inven tion allows the instantaneous casting speed to be controlled by varying the speed of rotation of the mould
  • FIG. 23 is a sectional view of a flangecast according to the invention, for example, in the case of FIG. 21,
  • FIG. 24 shows by way of comparison a heavy flange centrifugally cast with rapid transfer of the metal into the mould.
  • the bottom of the shell 1 is shaped with a central cavity of revolution 4 the wall of which is covered with a layer 5 of an insulating and refractive material.
  • This cavity 4 slopes gradually upwards and it joins smoothly into a mould 6 above it.
  • This mould is capped by a horizontal cover 7 in the center of which there is a large opening 8.
  • the process according to the invention consists of pouring the liquid metal 9 into the shell 1 while it is at rest (FIG. 1).
  • the metal 9 collects on the bottom of the central cavity 4 which is preferably heated. In this way the quantity of metal 9 necessary to obtain the required component 10 is poured, (FIG. 2).
  • the normal precautions for decanting oxidizable alloys are observed. If, in spite of everything, some turbulences producing oxides are then caused, these oxides which float on the top are skimmed until the surface of the bath 9 is smooth.
  • the shell is then set in rotation (FIG. 2), and the liquid alloy, carried by this rotation, is subject to the effects of centrifugal force, and moves outwards filling the mould 6 without turbulence. After solidification the cast component 10 is ob tained.
  • the surface of revolution of the bottom 5 of the initial filling cavity 4 is joined in a smooth fashion to the mould 6 of the shell 1, its central section being in a curve designed so that the mould 6 is filled without turbulence.
  • this cavity 4 may be provided with vanes 11 spread all around the circumference. These vanes 11 may or may not pass through the axis of rotation, may or may not be inclined to the horizontal, and may or may not be rectilinear (FIGS. 3-6).
  • vanes 11 may not reach the axis of rotation, thus leaving a central free space which allows the liquid metal 9 easily to find on initial filling the same level in all the compartments they form. They may not project above the surface of the liquid after filling (reference 11a, FIGS. 3 and 4), thus allowing the easy skimming of floating oxides. On the contrary, they may emerge from the surface of the liquid (reference 11b, FIG. 5), if it is feared that they would cause eddies in the liquid 9 after setting in motion.
  • a complementary advantage of this method of casting lies in the fact that the alloy penetrates rapidly, uniformly around the whole circumference, and at one time into the mould 6. Therefore there is not an rolling of successive layers the ones on to the others, layers between which there sometimes remain micro-segregations of oxides which give rise to external flaking.
  • the initial filling cavity 12 may have an annular shape (FIG. 6) so as to limit the exposed surface of the alloy 9, that is to say, its superficial oxidization and cooling before it is set in rotation.
  • This annular cavity 12 may likewise be furnished with driving vanes which emerge 11b, or do not emerge 11a.
  • a plate 101 the revolving vertical shaft 102 of which is carried by bearings 103 and 104.
  • a metal shell which comprises a bottom 105, an external rim 106, and a cover 107.
  • This cover carries at its center an opening surmounted by a cylindrical sleeve of revolution 108 of which the side and top walls 109 are insulating and refractive.
  • the sleeve 108 is pierced with an opening 110.
  • the joining of this conduit and the flat bottom of the shell is carried out by a bell-mouth 112 of the conduit 111.
  • the vertical conduit 111 is preferably lined with a tubular lining 114 of insulating and refractive material.
  • This lining is conical both on the interior and the exterior, so that if the cast component does not disengage from the central conduit 111, the lining 114 disengages easily with the metal solidified in the conduit, after which it is replaced for the manufacture of the following component.
  • This lining is continued downwards by a refractive metal tube 1 15 used to draw off the liquid metal.
  • the shell 105, 106, 107 is set in rotation at a suitable speed, by various processes which will be dealt with later the rising from the bottom of the molten liquid alloy in the central conduit 111 (arrow 116) is brought about.
  • the liquid arrives in the upper bell-mouth 112 and the combination of weight and centrifugal force makes it penetrate, then flow, in the radial channels 113.
  • the mould formed by the internal face of the rim 106 is filled progressively from the periphery towards the center, while the alloy is subject to centrifugal force and the air escapes from the mould by the upper hole 110 ofthe sleeve 108 (arrow 117).
  • the bore diminishes and the metal arrives in the sleeve 108, 109 above the central orifice of the cover 107.
  • the surface of the liquid metal passes successively through the shapes 118, 119, 120, 121, 122, 123, 124, 125, 126, 127 shown schematically in FIG. 13. So long as the shape 124 has not been reached, the metal keeps the profile 1 18b. The flow is stopped when the sleeve 108 is on the point of overflowing through its upper central orifice 110, which corresponds to the profile 127.
  • the co-axial conduit 11 1 is then blocked in its lower part to prevent the liquid metal from falling again and the rapid solidification of the cast component 128 (FIG. 7) is awaited, the shell 105, 106, 107 being usually made from a conducting material.
  • the central part 129 having been the last to be fed, while the periphery is already practically solidified, it is the insulating sleeve 108, 109 which will serve as a sullage piece for the feeding of the contraction of the component at its center.
  • the rotation may be stopped so that the exposed surface in the sullage piece 129, which is still liquid, may remain flat, during the contraction phase, as the surfaces of isolated sullage pieces generally are.
  • the component 128 is removed from the mould.
  • the cover 107 and the insulating sleeve 109 being detachable, the plate 128 is grasped by the central sullage piece 129 and drawn vertically upwards.
  • Each of these channels is a groove cut in the bottom 105 of the shell, and its depth diminishes from the central bell-mouth 112 in the direction of the peripheral zone 106. This is shown particularly in FIGS. 7 and 8 for three different sections 113a, 1131: and 1130 of the same channel. In this case, the vertical walls 130 have a draw upwards.
  • the channels 113 may leave the central bell-mouth 112 radially and reach the exterior of the shell perpendicularly to the circumference of the zone 106 (the case of FIG. 9). Equally well use could be made of channels 113 which leave the central bell-mouth 112 tangentially (the case of FIG. 10) and curve so as to arrive perpendicularly at the exterior circumference.
  • the channels 113 may be given a special conformation corresponding to a U-section inclined at an angle to the horizontal (FIGS. 11 and 12).
  • the direction of rotation is chosen so that the tangential speed 131 of the bottom 105 (FIG. 11) is consequently opposed to the inertia of the liquid metal when this latter flows out of the section 1l3b of the channel. Since these channels with an inclined section are cut directly in the bottom 105 of the shell, the solidified plate 128 must be removed from the mould by giving it a twisting movement intended to disengage the rigid metal from the channels.
  • the channels 113, 113d may be cut in a lining 133 made from refractive clay which is itself inserted in wider channels 134 out with a symmetrical upward draw into the bottom 105 of the shell. In this case, the linings 133 are destroyed each time a part is removed from the mould.
  • the feeding of the central channel 111, 115, by liquid metal from the bottom may be carried out in several different ways.
  • the shell 105, 106, 107 is made relatively airtight and the central hole of the sleeve 108 is surmounted by a tube 149 connected by a revolving joint 150 to a vacuum pump, not shown. Metal previously introduced into a supply pocket or furnace is drawn in.
  • FIGS. 15 and 16 there is illustrated in FIGS. 15 and 16 another variant in which a false bottom-feed of the centrifuging shell 105, 106, 107 is carried out.
  • a flow-tank 136 is placed above the central insulating sleeve 108, 109 and a fall, or flow-tube 151, passes through the hole of the sleeve 108 and ends in a central depression 152 hollowed in the bottom of the shell in the zone from which leave the radial channels 113.
  • the tank 136 is filled with the metal 137 to be poured; the quantity of metal admitted to the shell is measured by operating a stopper-rod 138 of which the action is sufficiently precise for the outflow to be measured exactly.
  • This adjustment is such that after the shell is set in rotation and the stopper 138 is opened, the level in the central depression 152 remains constantly suited to the correct flow of the metal in the radial channels 113, the lower end of the feed tube 151 being constantly below the exposed surface in the central depression and even below the bottom the feed channels. In this way the whole of the component is supplied and the tube 151 is withdrawn by raising the flow-tank 136 before the metal has started to solidify in the central part of the plate 128 (FIG. 16).
  • This arrangement is economical the only risk of the turbulent production of oxides taking place at the moment when the metal arrives at the bottom of the central depression 152.
  • FIG. 18 there is shown a horizontal shell 201 which turns by known methods around a vertical axis 202.
  • the peripheral rim 203 of this shell forms a mould 204 in which it is proposed to centrifuge the liquid metal.
  • the whole is capped with a cover 205 fitted with a sealing joint 206.
  • the shell 201 has a central cavity 211.
  • the bottom of this cavity 211 slopes gradually in the direction of the peripheral mould 204, while radial ribs 212 prevent the formation of eddies during the transfer of the liquid metal.
  • the bottom of the cavity 211 is formed by a sheet 213 of refractive steel below which there is a layer of refractive clay 214. Within this clay there are embedded electrical heating resistors 215 supplied at all times whether stopped or rotating by revolving sliprings fixed to the shaft 208 of the machine, and rubbing on appropriate contacts 209.
  • the walls of revolution of the cavity 21 1 are very steep.
  • the lining 214 and the heating resistors 215 extend all along an axial channel 219.
  • This channel is provided to carry out the bottom feeding of the cavity 211. It opens in the center of the latter through a seat 220 below which it extends to a ferrule 221.
  • a detachable plug 224 ensures the blocking of the lower end of the ferrule 221 when this is required.
  • This plug 224 turns freely on a control support 222 which may be lowered (opening) or raised (closing).
  • the assembly 221, 224, 222 is submerged in molten metal 223.
  • the refractive steel tube 219 is given a shape with a draw which widens upwards.
  • a recessed valve 225 made from refractive alloy is used, resting by its own weight on the seat 220.
  • the valve 225 comprises a disc 226 fitted with a tail formed by radial partitions 227. This tail ensures the guiding of the valve in the upper part of the tube 219, whilst allowing the liquid metal to circulate between the partitions 227
  • the cover 205 of the mould is surmounted by a chimney 228 connected permanently by a revolving coupling 229 to the tubing 230 of a known vacuum suction installation.
  • FIG. 22 There is shown in FIG. 22 a first profile corresponding to the surface of the bath of metal for a low speed of rotation of the mould.
  • the heating cavity 211 is then practically full of molten metal. If the rotation is accelerated, the paraboloid is hollowed out and the surface of the bath finds a balance, for example, following a new profile 232.
  • the passage from the profile 231 to the profile 232 is carried out by the evacuation from the cavity 211 of a certain quantity of metal which is which is centrifuged towards the mould 204 to supply the component 233 which is being cast. So long as the speed of rotation remains at this new value, the bath remains stable following the profile 232.
  • the profile is further hollowed out, for example, to the paraboloid 234, which is accompanied by a fresh drawingoff of metal by centrifuging from the cavity 217 to the component 233.
  • the cavity 211 the walls of which correspond to a paraboloid 235, is emptied completely.
  • the pouring equipment becomes immediately available to pour into another mould.
  • the resistances 215 may carry out an additional heating of the liquid metal, then, by programming and varying the speed of rotation of the mould, the law according to which the speed of flow of the liquid metal varies during the transfer from the cavity 211 to the mould 204 may be decided at will. For example, at first a rapid speed of flow towards the mould 204 may be ensured, and on the contrary a slow speed of transfer towards the end, that is to say, when the component 233 is already in course of solidifying.
  • FIGS. 23 and 24 This method allows of obtaining particularly sound components, as is shown in FIGS. 23 and 24.
  • FIG. 24 there is shown a metal flange 236 obtained by centrifuging when the casting is carried out in a single transfer.
  • a deep shrinkage hole 237 In is known that there appears on the internal face of this flange a deep shrinkage hole 237, sometimes matched by underlying shrinkage holes 238.
  • the marked turbulences observed during the centrifuging diffuse the oxides and impurities 239 over a relatively thick zone 240 in the internal part of the flange 236. This zone 240 must be eliminated to obtain a sound component.
  • the process according to the invention allows of obtaining a flange 233 (FIG. 23) on the internal face of which the zone to be eliminated 241 is much thinner.
  • the liquid metal constitutes a sort of internal sullage piece which fills the shrinkage hole.
  • the vacuum is applied through the tube 230. It must be understood that it is not a question of simply applying the depression once and for all.
  • the tube 230 ensures a permanent vacuum as complete as possible and a constant de-gassing of the material in the mould.
  • the flow is then carried out by opening the plug 224, the vacuum causing the metal to rise in the tube 219 and the raising of the valve 225.
  • the heated cavity 211 fills with liquid metal.
  • the vacuum is allowed to be applied to this metal for complete de-gassing.
  • the mould 201, 205 is then set in rotation, then the feed channel 221 is blocked by means of the plug 224. As previously, the speed of rotation is varied at will, whilst the vacuum is allowed to remain through the tube 230 until the component is completely solidified.
  • the metal is made to rise into the cavity 211 by the action of the vacuum, while the mould 201,205 is stopped.
  • the metal is de-gassed during its ascent in the course of which it raises the valve 225.
  • the vacuum is cut off at the level of the tube 230 and the valve 225 falls back on its seat 220. Rotation is then started according to a programmed speed until the component has solidified.
  • This method therefore consists of carrying out the filling of the cavity 211 under vacuum, followed by centrifuging towards the mould 204 with the vacuum which remains trapped in the mould.
  • FIG. 20 There is shown in FIG. 20 a variant in which the feeding of the tube 219 from the bottom is carried out through a revolving joint 250, by means of a fixed tube 251 and a flow tank 252.
  • This tank placed to give a gravity feed, contains the liquid metal 243, the outflow of which is controlled by raising a stopper-rod 253 to a greater or lesser extent.
  • the cover 205 here may still be connected to a de-gassing tube 230.
  • FIG. 21 Another variant in which the feed at the bottom by means of a tube 210 from above allows of obtaining a particularly sound flange 233, of the kind already described in FIG. 23. Since the shrinkage hole 242 is particularly shallow, the zone 241 which has to be eliminated, remains small.
  • a process for the centrifugal casting of metal components in a horizontal shell adapted to revolve about a vertical axis comprising the steps of:
  • a process as claimed in claim 1 further comprising the step of providing a metal sleeve having an internal refractory lining above and at the center of the mold for forming a cavity in which the oxides are gathered at the completion of a centrifuging operation.
  • a process as claimed in claim 1 further comprising the step of connecting the top of the mold to a vacuum source during rotation of the shell for performing a de-gassing operation on the molten metal during casting thereof.

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  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
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US858057A 1968-09-17 1969-09-15 Method for the centrifugal casting of metal in a rotating horizontal shell Expired - Lifetime US3672429A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR69050397A FR1587403A (de) 1968-09-17 1968-09-17
FR69050493 1968-10-11
FR6928972A FR2056046A5 (en) 1968-09-17 1969-08-25 Centrifugal casting highly oxidisable metals

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US3672429A true US3672429A (en) 1972-06-27

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US858057A Expired - Lifetime US3672429A (en) 1968-09-17 1969-09-15 Method for the centrifugal casting of metal in a rotating horizontal shell

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US (1) US3672429A (de)
AT (1) AT297240B (de)
BE (1) BE738760A (de)
CA (1) CA920769A (de)
CH (1) CH514379A (de)
FR (3) FR1587403A (de)
GB (1) GB1288622A (de)
NL (1) NL6914030A (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007771A (en) * 1974-01-15 1977-02-15 Welsch M Process for the production of aluminum
US4082586A (en) * 1975-09-10 1978-04-04 Osment David L Method of making model trees and article
US4101925A (en) * 1975-07-08 1978-07-18 Kelley Larry P Centrifugal forming thin films and semiconductors and semiconductor devices
US4392805A (en) * 1980-10-31 1983-07-12 Golyak Oleg L Centrifugal casting apparatus
US5303682A (en) * 1991-10-17 1994-04-19 Brunswick Corporation Cylinder bore liner and method of making the same
CN1052671C (zh) * 1995-02-17 2000-05-24 叶治文 一种离心铸造铝合金轮毂的方法及其设备
US6499529B1 (en) 2001-08-17 2002-12-31 Hitchiner Manufacturing Co., Inc. Centrifugal countergravity casting
US20050098294A1 (en) * 2003-11-12 2005-05-12 Howard Robert W. Casting device and method
US20060102311A1 (en) * 2004-11-12 2006-05-18 Howard Robert W Casting device and method
CN105478706A (zh) * 2015-12-23 2016-04-13 上海大学 离心浇铸制备大尺寸凝固亚稳薄板的方法和装置
US20170072459A1 (en) * 2015-09-15 2017-03-16 Shin Young Unique Co., LTD. Molten metal pouring device and centrifugal casting machine using the same
CN109128114A (zh) * 2018-07-03 2019-01-04 河南森源电气股份有限公司 一种铸型工艺
CN112296302A (zh) * 2020-10-12 2021-02-02 南城县盈鑫锅业铸造有限公司 一种铁锅旋转浇铸冷却装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2296483A1 (fr) * 1975-01-02 1976-07-30 Lajoye Pierre Procede pour la fusion et la coulee centrifuge sous vide de metaux, dispositif pour sa mise en oeuvre et pieces obtenues
DE3042348C2 (de) * 1980-10-31 1982-10-14 Darnickij opytno-eksperimental'nyj remontnyj zavod, Kiev Einrichtung zum Schleuderguss

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007771A (en) * 1974-01-15 1977-02-15 Welsch M Process for the production of aluminum
US4101925A (en) * 1975-07-08 1978-07-18 Kelley Larry P Centrifugal forming thin films and semiconductors and semiconductor devices
US4082586A (en) * 1975-09-10 1978-04-04 Osment David L Method of making model trees and article
US4392805A (en) * 1980-10-31 1983-07-12 Golyak Oleg L Centrifugal casting apparatus
US5303682A (en) * 1991-10-17 1994-04-19 Brunswick Corporation Cylinder bore liner and method of making the same
CN1052671C (zh) * 1995-02-17 2000-05-24 叶治文 一种离心铸造铝合金轮毂的方法及其设备
US6499529B1 (en) 2001-08-17 2002-12-31 Hitchiner Manufacturing Co., Inc. Centrifugal countergravity casting
US20050098294A1 (en) * 2003-11-12 2005-05-12 Howard Robert W. Casting device and method
US20060102311A1 (en) * 2004-11-12 2006-05-18 Howard Robert W Casting device and method
US20170072459A1 (en) * 2015-09-15 2017-03-16 Shin Young Unique Co., LTD. Molten metal pouring device and centrifugal casting machine using the same
CN106513620A (zh) * 2015-09-15 2017-03-22 现代自动车株式会社 熔融金属浇注装置和使用该装置的离心铸造机
CN105478706A (zh) * 2015-12-23 2016-04-13 上海大学 离心浇铸制备大尺寸凝固亚稳薄板的方法和装置
CN109128114A (zh) * 2018-07-03 2019-01-04 河南森源电气股份有限公司 一种铸型工艺
CN112296302A (zh) * 2020-10-12 2021-02-02 南城县盈鑫锅业铸造有限公司 一种铁锅旋转浇铸冷却装置
CN112296302B (zh) * 2020-10-12 2021-12-28 南城县盈鑫锅业铸造有限公司 一种铁锅旋转浇铸冷却装置

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Publication number Publication date
DE1946745A1 (de) 1970-04-02
NL6914030A (de) 1970-03-19
FR2056046A5 (en) 1971-05-14
DE1946745B2 (de) 1976-01-15
FR1587187A (de) 1970-03-13
AT297240B (de) 1972-02-15
BE738760A (de) 1970-02-16
GB1288622A (en) 1972-09-13
CH514379A (fr) 1971-10-31
FR1587403A (de) 1970-03-20
CA920769A (en) 1973-02-13

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