EP0890400B1 - Procédé de moulage pour la fabrication des objets moulés métalliques - Google Patents

Procédé de moulage pour la fabrication des objets moulés métalliques Download PDF

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Publication number
EP0890400B1
EP0890400B1 EP97810381A EP97810381A EP0890400B1 EP 0890400 B1 EP0890400 B1 EP 0890400B1 EP 97810381 A EP97810381 A EP 97810381A EP 97810381 A EP97810381 A EP 97810381A EP 0890400 B1 EP0890400 B1 EP 0890400B1
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EP
European Patent Office
Prior art keywords
casting
heat
cooling
casting material
accordance
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 - Lifetime
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EP97810381A
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German (de)
English (en)
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EP0890400A1 (fr
Inventor
Georg Habegger
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Wartsila NSD Schweiz AG
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Wartsila NSD Schweiz AG
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Priority to EP97810381A priority Critical patent/EP0890400B1/fr
Priority to DE59707865T priority patent/DE59707865D1/de
Priority to PL98326729A priority patent/PL186378B1/pl
Priority to KR1019980022535A priority patent/KR100567360B1/ko
Priority to JP16884298A priority patent/JP4248623B2/ja
Publication of EP0890400A1 publication Critical patent/EP0890400A1/fr
Application granted granted Critical
Publication of EP0890400B1 publication Critical patent/EP0890400B1/fr
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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
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D46/00—Controlling, supervising, not restricted to casting covered by a single main group, e.g. for safety reasons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases
    • F02F2007/0097—Casings, e.g. crankcases for large diesel engines

Definitions

  • the invention relates to a casting method for manufacturing of metallic castings according to the generic term of independent claim.
  • castings for example cast iron, specifically a gray cast iron alloy
  • a casting mold for example one in a mold pit modeled sand mold or a mold, placed where it solidifies by giving off heat to the casting mold.
  • Solidification runs complex chemical and physical Operations.
  • spatial and temporal The course of solidification of the cast material has a decisive one Influence on the developing structure and thus the mechanical properties of the casting.
  • the z. B. for gray cast iron alloys usually below 300 ° C is chosen to cool in the mold before leaving can be demolded.
  • the spatial and temporal The cooling process of the cast material has an essential one Influence on the mechanical properties for example the internal stresses of the castings. Since that The casting material increasingly heats up the casting mold Cooling rate of the cast material with increasing dwell time in the mold and can, for example, before Unpacking temperature reached below 1 ° C decrease per hour. This is the cooling time of the Foundry comparatively compared to the solidification time long.
  • large-volume castings such as B. Engine housings of large diesel engines often result Cooling down of several weeks. Because in foundries Only a few molded pits are available for reasons of space stand in which such large-volume castings the long cooling times are producible essential limiting factor for the achievable Production capacity and are therefore below disadvantageous economic aspects.
  • EP-A-0 065 208 deals with the manufacture thick-walled, container-like cast iron castings with nodular graphite (spheroidal graphite iron), such as as Transport container used for used fuel assemblies become.
  • nodular graphite spheroidal graphite iron
  • Transport container used for used fuel assemblies become.
  • To produce a fine-grained, low-segregation and pore-free casting structure is proposed Relentlessly building the mold core and the outer shape entire inner surface with a liquid, in the system evaporating liquid to cool and so pour to dimension that the cast iron solidifies in them before the eutectic solidification of the casting begins.
  • the lost mold core includes an iron sheet jacket with welded-on lid, which covers the inner surface shape the thick-walled container. The sheet metal jacket and the lid are separated after cooling and from removed the casting.
  • DE-C-855 151 discloses a process for the production of steel blocks with which the solidification of the Foundry goods should be accelerated by less To generate internal defects in the structure.
  • the mold according to DE-C-855 151 is a sand mold with an inner one Sheet metal jacket, which the outer boundary surface of the Steel blocks are formed and welded to the steel block.
  • several cooling coils are inlaid which water or compressed air is introduced. With these Cooling coils will cover the entire outer surface of the Steel blocks cooled.
  • a casting process for manufacturing metallic castings to provide the front does not have the disadvantages mentioned.
  • the casting process should produce as economically as possible allow metallic castings. In particular, it should enable the process, especially in Giesslingen large mass, to significantly reduce the cooling times. Furthermore, the casting process should make it possible also complex structured castings such as engine housings for large diesel engines, where one elaborate thermal post-processing can be dispensed with can be accepted without sacrificing quality Need to become.
  • the Casting method according to the invention for producing metallic castings from a cast material in which the cast material in a liquid state in a mold, in particular a sand mold, is introduced and that The cast material solidifies in the mold and cools, whereby the Cast material in the mold controlled by a cooling system is cooled, is particularly characterized by that depending on the geometry of the casting and the desired metallurgical effects at least local spatial area of the casting is specified in which the cast material is heated in a targeted and controlled manner withdrawn that the cooling system for the controlled Deprivation of heat in terms of its placement and shape is adapted to this local spatial area, and that controlled heat extraction only by means of flowing Air is made from this local area.
  • Controlled cooling can be spatially and temporally Solidification process and / or cooling process in the cast material control actively and specifically. This allows especially the cooling time that the cast material needs, to reach its unpacking temperature, considerably shorten.
  • the cast material is in the mold in at least one Specifiable spatial area targeted and controlled Deprived of heat.
  • solidification of the cast material controlled by targeted heat extraction become.
  • the cast material in the mold in several Specifiable and controlled spatial areas
  • To withdraw heat being the different areas of heat extracted from spatial areas are essentially independently controllable.
  • This has the particular advantage that the spatial course solidification and / or cooling active and can be influenced in a controlled manner.
  • the mechanical properties of the castings already at the Influencing manufacturing in a controlled manner.
  • the heat is extracted by means of air, because air enters inexpensive, easy to handle and is safe cooling medium.
  • the cooling system preferably comprises at least one Pipe system for the flowing air, through which the Foundry in at least one predeterminable spatial Targeted and controlled area of heat can be extracted.
  • This constructively simple measure makes it possible spatial and temporal solidification and / or The cooling process in the cast material is controlled too influence.
  • the pipe system can for example in or between the sand cores of the Sand form run.
  • the cooling system includes one preferred variant furthermore a transmission medium, which thermally connects the pipe system with the cast material coupled.
  • This transmission medium can in the simplest execution sand or a sand core.
  • Around to achieve better thermal contact can Transmission medium but also a better heat conductive Material, e.g. B. graphite.
  • the pipe system partly on or in graphite plates that are in direct physical contact with the Stand cast material.
  • the cooling system preferably comprises at least two Pipe systems for air, through which the cast material in targeted and several predeterminable spatial areas controlled heat is withdrawable, the means of amounts of heat extracted from different pipe systems are essentially independently controllable.
  • the inventive casting process for the production of metallic castings is particularly characterized by this characterized that the cast material in the mold controlled cooling or that a cooling system for controlled cooling of the cast material is provided.
  • controlled cooling means that - in the Difference to passive solidification or cooling down - heat is actively removed from the casting material or the casting mold and controls the amount of heat extracted can be influenced.
  • a first embodiment of the invention relates on the manufacture of engine housings for Large diesel engines, such as those used in shipbuilding be used.
  • engine housings for Large diesel engines such as those used in shipbuilding be used.
  • Such engine cases that are typically extremely complex, that means many cavities and recesses as well as a large one Have number of partitions of different thickness, are usually poured into sand molds that according to the desired shape of the one to be manufactured Castings, possibly taking into account one Machining allowance to be modeled.
  • Fig. 1 shows a partially schematic representation a motor housing 1 in a mold pit 2, which as Permanent form, i.e. designed for multiple use.
  • the engine housing 1 includes a crank chamber 11 and a cylinder space 12 in which two cylinders 122 are recognizable.
  • the motor housing usually comprises 1 several, for example ten or twelve cylinders 122, which are arranged in pairs in a row. On the further details of that shown in Fig. 1 Motor housing 1 is not discussed here because on the one hand, this is not essential for understanding the Invention and the other are well known.
  • the mold pit 2 for example made of cement sand consists of several sand cores.
  • a Sand core is made from a binder Quartz sand or another sand-like mineral z. B. by chemical or thermal curing created.
  • the individual sand cores that normally only are designed for single use, are in the Form pit assembled or combined such that the cavities between them in their entirety essentially the shape of the casting to be made for the motor housing 1 correspond.
  • the 1 shows essentially all cavities and recesses in the motor housing 1 to be produced and the space between the motor housing 1 and the Floor 21 or the inner wall 22 of the mold pit 2 through appropriately shaped sand cores. Because of better clarity is in Fig. 1 on a explicit representation of the sand cores waived and therefore the motor housing 1 shown by the The totality of voids between and in the sand cores is formed.
  • the sand mold After the sand mold is created this way, it will liquid castings, usually a cast iron alloy, poured into the sand mold and flows into the cavities, where it solidifies and cools, causing the depicted Motor housing 1 is created.
  • liquid castings usually a cast iron alloy
  • a cooling system is controlled Cooling of the cast material.
  • the illustrated embodiment includes the cooling system several pipe systems that include a crankcase cooler 3 (see Fig. 2 and Fig. 3) and a floor cooler 4 (see Fig. 4) form.
  • a pipe becomes fluid through the pipe systems
  • the heat transfer medium moves the casting material or the casting mold Deprives heat. Air is used as the heat transfer medium because this medium is easy to use, harmless, inexpensive and efficient, even with the usual high temperatures of the cast material.
  • the air can for example by means of a fan or Blower can be moved through the pipe systems.
  • the one The amount of heat extracted from the casting material can be Flow rate of air in relation to time in simple Way through valves, throttle valves or other Control dosing devices. For example, by increasing the flow velocity of the air or by increasing the pressure of the air fed in Increase cooling capacity of the cooling system. In practice it has it has proven itself to supply compressed air of up to a few bar Feed pipe systems.
  • the control of the in the individual pipe systems flowing air volumes can both input and output of the pipe systems respectively. The control takes place for practical reasons but preferably on the output side.
  • two are in essential independent pipe systems provided, namely the crankcase cooler 3 and the floor cooler 4.
  • This is it is possible to cast the casting material in different spatial Extract areas in a targeted and controlled manner, whereby the amounts of heat extracted from the various areas in the are essentially independently controllable.
  • Temperature profile i.e. the temperature distribution in the Casting, controlled influence.
  • the pipes of the pipe system in the mold can be the spatial areas in which the casting material is Pipe systems pretend heat is withdrawn.
  • the explicit The design and placement of the pipe systems is based depending on the geometry of the casting and the concrete Application.
  • the Crankcase cooler 3 the cast material in the border area between the crank chamber 11 and the cylinder chamber 12, that is where there is one due to the geometry of the casting Heat build-up can occur, locally extracting heat.
  • the Floor cooler 4 is used to extract heat from the floor area the engine housing 1.
  • temperature sensors 5a, 5b, 5c for example thermocouples cast in the cast material, provided with which show the local temperature of the casting different places is continuously recorded.
  • there is a first Temperature sensor 5a in the bottom area a second Temperature sensor 5b in the center of the border area between Cylinder 12 and crank chamber 11 and a third Temperature sensor 5c in the flange area of the motor housing 1 provided. From the measured values of the three The current temperature sensors 5a, 5b, 5c Determine the temperature profile in the cast material.
  • the Temperature sensors 5a, 5b, 5c transmit their measured values for example to a regulation 6, by means of which the Air volumes in the pipe systems can be controlled.
  • the Regulation 6 sets the flow rate of air in the individual pipe systems, for example via a corresponding control of not shown Throttle devices controlled such that, depending on current temperature profile in the Giessling, the one or other spatial area of the casting a larger one or less heat is withdrawn per time. It comes for example in the area of the second temperature sensor 5b to a heat accumulation, recognizable by a large one Difference between that of the second temperature sensor 5b and the third temperature sensor 5c measured Temperatures, so the regulation 6 Cooling capacity of the crankcase cooler 3 by enlarging the flow rate in air increases so that this approach the two temperatures.
  • the pipe system forming the crankcase cooler 3 is in 2 is shown in a side view and in Fig. 3rd in a view from the direction III-III in Fig. 2.
  • the crankcase cooler is preferably 3rd in one piece from a tube, for example a steel tube manufactured.
  • the crankcase cooler 3 has a supply Leg 31, which is in a curved, the shape of an almost closed S having part 33 passes.
  • the other End of the S-shaped part 33 goes into a laxative Leg 32 over, which is substantially parallel to that feeding leg 31 runs.
  • the S-shaped part 33 of the crankcase cooler is arranged in the mold, that it is provided with the reference number 30 in FIG Area contacted, which is essentially the limit between the crank chamber 11 and the cylinder chamber 12 forms.
  • this surface 30 are two elbows of the S-shaped part 33 relative inclined towards each other so that they are in the side view 2 form a V.
  • the two bow pieces of the Part 33 are curved so that they the wall of the Follow cylinder 122.
  • several heat-conducting plates 34 for example made of graphite, with which the Crankcase cooler 3 rests on surface 30. Thereby is a homogeneous and good heat transfer from guaranteed the cast material in the crankcase cooler 3.
  • the feeding and laxative legs 31, 32 each run according to the Representation in Fig. 1 of the surface 30 through the Crank chamber 11 upwards.
  • the feeding legs 31 are either individually or through a common central Line into which they flow, with a Air supply means, for example a fan or a blower.
  • the laxative legs 32 are used for better control and monitoring preferably each individually out of the mold.
  • the pipe system forming the floor cooler 4 is shown in FIG. 4 shown.
  • the floor cooler 4 is in the bottom of the molding pit 2 arranged and comprises a main line 41, which essentially over the entire width of the Motor housing 1 extends. From the main line 41 branches four each essentially U-shaped tubes 42 from each of which only one leg with the Main feed line 41 is connected. Through these legs the air flows, as indicated by the arrows in FIG. 4, into the U-shaped tubes. The other legs of the U-shaped tubes 42 each lead to an outlet 43 for the exhaust air. For better control and monitoring the outputs 43 are individually led out of the mold. Are between the legs of the U-shaped tubes 42 several steel plates 44 arranged, for example welded in to ensure even cooling of the To achieve bottom area of the motor housing 1.
  • the tubes of the floor cooler 4 can, for example be made of steel.
  • the cooling time of the engine case in the mold 1 and thus the required production time to shorten significantly, and the residual stresses in the Reduce the casting to the extent that subsequent stress relief annealing can be dispensed with can.
  • the first goal is achieved through active heat extraction from the cast material by means of the pipe systems directed air reached. This is the heat dissipated much faster than, for example, the allow passive cooling.
  • Practice shows that the cooling time by means of the active controlled cooling, So the time that the motor housing 1 in the mold needed to reach its unpacking temperature, in Compared to passive cooling to less than one Can shorten thirds. This means under economic progress.
  • the emerging from the pipe systems heated air used to dry other molds can be so that the contained in the heated air Energy doesn't go unused.
  • the second goal can be achieved by using the Controlled cooling of the Temperature profile in the area of the temperature sensors 5a and 5b to the temperature profile in the area of Temperature sensor 5c is adjusted. This means, that by regulating the flow rates of air in the Crankcase cooler 3 and in the floor cooler 4 Temperature gradient over the cast material is minimized. By controlled and local heat extraction from the different areas of the cast material, it is possible the cast material is very homogeneous, i.e. with very little internal To cool down temperature differences. Where the Heat builds up, for example in the area of Temperature sensor 5b, the cooling capacity of the corresponding pipe system (crankcase cooler 3) increases that the local heat extraction Temperature to that in the area of the temperature sensor 5c aligned.
  • This homogeneous cooling allows drastically reduce the residual stress in the casting. It is also possible in the area of the temperature sensor 5b to cool so much that here a lower one locally Temperature prevails than in the area of the temperature sensor 5c and the temperature sensor 5a. In principle, it is possible in the area of the temperature sensor 5b To generate compressive stresses.
  • the Invention of both the spatial cooling process (Temperature profile) as well as the temporal cooling process Influence (cooling rate) in a controlled manner means a significant expansion of the casting technology Opportunities because of the spatial and temporal Cooling process of the cast material under metallurgical Aspects, depending on the geometry and desired mechanical Properties of the cast part to be produced, can be optimized is.
  • FIGS. 5-9 Variants for heat transfer between the cast material 10 and the heat transfer air, which is in a line 8 one of the pipe systems moved, shown.
  • the Air is symbolized by an arrow shown.
  • Fig. 5 runs the line 8 inside a sand core 9, so that the Sand is the transmission medium, which the Pipe system thermally coupled to the cast material.
  • Fig. 6, Fig. 7 and Fig. 9 as Transmission medium a better heat-conducting material, preferably graphite 20 to use.
  • the line 8 is completely of the Surrounded by graphite 20.
  • Suitable for this is, for example, graphite powder, Graphite granules, or graphite powder or granules, the with a good heat-conducting resin, e.g. B. furan binders, is mixed.
  • the line 8 is surrounded by an iron body 21, poured into the iron body 21, for example. Is between the iron body 21 and the cast material 10 again graphite 20 is provided.
  • a second embodiment of the invention relates focus on the production of large eccentric wheels that for example in large presses such as automobile presses be used.
  • the first embodiment primarily demonstrated how by means of the invention the cooling process in the cast material is controllable the second embodiment primarily as the invention advantageous for controlling the solidification process in Cast material can be used.
  • Such eccentric wheels 50 usually have to Sprocket 51 very good mechanical properties, in particular have a very high hardness, around which To withstand the requirements in operation in the long term. there the structure in the area of the ring gear 51 should also be free of cementite excretions. These high Structural requirements are familiar with Casting process not feasible, so that the structure of the Castings after removal from the mold using complex thermal aftertreatment (e.g. normalization annealing with cooling in air and then Stress relieving) has to be formed in order to B. the to achieve the desired hardness.
  • complex thermal aftertreatment e.g. normalization annealing with cooling in air and then Stress relieving
  • a great disadvantage due to the processing costs it is that the Microstructure of the entire eccentric wheel 50 due to the thermal Post-treatment is reshaped and not just the areas which should have the great hardness.
  • Controlled cooling according to the invention allows now in the area that should be extremely hard, namely in the area of the ring gear 51, the solidification accelerate through targeted heat extraction in such a way that the ring gear 51 has a very fine structure with small has eutectic cells and completely pearlitic is. Due to the controlled cooling, the Desired hardness on the ring gear 51 without thermal Aftertreatment can be realized, with the rest of the Eccentric wheel 50 remains essentially unaffected.
  • this includes Cooling system multiple cooler plates 60 along the The circumference of the eccentric wheel 50 is arranged. To the better heat transfer is between each cooler plate 60 and the eccentric wheel 50 each have a good thermal conductivity Medium, for example a graphite element 70, where a surface of the graphite elements 70 to each Eccentric wheel curvature is adjusted.
  • a good thermal conductivity Medium for example a graphite element 70, where a surface of the graphite elements 70 to each Eccentric wheel curvature is adjusted.
  • the cooler plate 60 is in one in FIG Supervision shown.
  • the cooler plate 60 has an in essentially cuboid shape and has Pipe system that in this embodiment as a one-piece pipeline 61 is configured.
  • the Pipeline 61 leads from an inlet 62 for the Cold air through the interior of the cuboid cooler plate 60 to an outlet 63.
  • the pipeline 61 initially runs parallel to the circumference following the radiator plate 60 then curves in the direction the center of the cooler plate 60 and leads in reverse Direction back to outlet 63. Die The direction of air flow is shown in FIGS. 11 and 12 indicated by the arrows.
  • the cooler plate 60 can for example from a solid steel or iron cuboid exist in which the pipe 61 is cast.
  • the various cooler plates 60 can individually, in groups or together, each by the Inlet 62 are supplied with air.
  • Cooler plates 60 By controlling the Flow rate of air flowing through the air per time Cooler plates 60 flows, which can be the in the cast Area of the ring gear 51 specifically extracted amount of heat Taxes. This allows the solidification of the cast material accelerate locally in a controlled manner.
  • the area of the Giesslings specify in which through targeted and controlled heat extraction accelerates solidification shall be.
  • the invention thus also enables the spatial and temporal solidification process in the cast material controlled influence. This also results an expansion of the casting possibilities because a targeted, local influencing of the Solidification-forming structure can be realized.
  • a third embodiment of the invention relates focus on the production of castings, the massive, have thick areas or blocks in which comparatively thin holes are provided.
  • Fig. 13 shows a section of such a casting, the a solid block 80 (shown hatched) in which a comparatively thin bore 81 is provided. Also the one in FIG. 13 in a detail shown casting is not, for example, in one cast sand mold shown.
  • a sand core 90 is provided, which keeps liquid casting material away from the space of the mold where the casting should later have the thin bore 81. It is a known problem with conventional ones Casting process that there is such thin Bores 81 comes to considerable heat build-up.
  • the controlled cooling according to the invention allows also solve this problem.
  • a Pipe system which runs inside the sand core 90, and through which air is moved as a heat carrier, targeted to the spatial area of the casting Extracted heat that contains the thin bore 81. Consequently the solidification and / or the Cooling of the cast material in the area of the thin bore 81 accelerate and through a corresponding regulation of Also control the flow rate of air.
  • can heating the sand core 90 over its Penetration temperature can be avoided efficiently.
  • the air flowing through the pipe 91 is indicated by the arrows.
  • Such a double U-shaped Tube 91 can be manufactured by a first straight tube is bent into a U and then the round end of the U towards the open end of the U is bent.
  • Sand casting methods refer to, that is the invention of course, not limited to such examples.
  • she is also for mold casting processes or molds (metallic, mostly made of cast iron Casting molds), suitable or for such casting processes, in which a part of the casting through chill molds and a other part is shaped by a sand mold.
  • molds metal, mostly made of cast iron Casting molds
  • the pipe systems for the heat transfer medium in the wall of the Provide mold it is possible, for example, the pipe systems be poured into the mold.
  • the casting method according to the invention thus allows through the controlled cooling the spatial and temporal solidification and / or cooling process in the To influence the castings in a controlled manner. Let her through yourself Cooling times, especially for large-scale castings reduce significantly. Metallic castings can also be used very good quality without being made for it elaborate thermal post-processing, such as for example stress relief annealing to reduce Internal stresses or normalization annealing Structural transformation is necessary. This means one considerable time and cost savings.
  • the placement and the spatial course of the cooling system depends on the geometry of the manufactured Giesslings and according to the specific application, the means after the desired metallurgical effects. Based on these criteria, the spatial Specified areas of the cast material to which targeted and controlled heat is to be extracted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Claims (8)

  1. Procédé de moulage pour la fabrication d'objets moulés métalliques à partir d'un matériau de moulage, où le matériau de moulage est introduit à l'état liquide dans un moule, notamment un moule en sable, et le matériau de moulage se solidifie et refroidit dans le moule, où le matériau de moulage dans le moule est refroidi d'une manière commandée par un système de refroidissement (3, 4 ; 60 ; 91), caractérisé en ce qu'en fonction de la géométrie de l'objet moulé et des effets métallurgiques recherchés, au moins une zone spatiale locale de l'objet moulé est prédéfinie, dans laquelle de la chaleur est retirée d'une manière ciblée et commandée de l'objet moulé, en ce que le système de refroidissement, en vue du soutirage commandé de chaleur, est adapté quant à son emplacement et à sa forme, à cette zone spatiale locale, et en ce que le soutirage commandé de chaleur a lieu seulement au moyen d'un air d'écoulement de cette zone locale.
  2. Procédé de moulage selon la revendication 1, où est soutirée du matériau de moulage dans le moule, dans plusieurs zones prédéfinissables spatialement, d'une manière ciblée et commandée de la chaleur, où les quantités de chaleur soutirées des différentes zones spatiales sont réglables sensiblement indépendamment les unes des autres.
  3. Procédé de moulage selon l'une des revendications précédentes, où la température locale respective est détectée continuellement à des emplacements différents du matériau de moulage au moyen de capteurs de température (5a, 5b, 5c), et le profil de température pouvant être déterminé à partir de celle-ci est utilisé pour la commande du refroidissement.
  4. Procédé de moulage selon la revendication 3, où le gradient de température est réduit à un minimum sur le matériau de moulage.
  5. Procédé de moulage selon l'une des revendications précédentes, où la solidification du matériau de moulage est commandée par un soutirage ciblé de chaleur.
  6. Procédé de moulage selon l'une des revendications précédentes, où le système de refroidissement (3, 4 ; 60 ; 91) comprend au moins un système tubulaire (3, 4 ; 61, 91) pour l'air d'écoulement, et où, au moyen d'un milieu de transmission (9 ; 20 ; 21 ; 22), le système tubulaire (3, 4 ;61 ; 91) est couplé thermiquement avec le matériau de moulage (10).
  7. Procédé de moulage selon la revendication 6, où le milieu de transmission (20, 21, 22) contient du graphite (20).
  8. Procédé de moulage selon l'une des revendications précédentes, dans lequel est prévu en outre un réglage (6) qui commande les quantités de chaleur soutirées de façon que le gradient de température sur le matériau de moulage soit minimal.
EP97810381A 1997-06-17 1997-06-17 Procédé de moulage pour la fabrication des objets moulés métalliques Expired - Lifetime EP0890400B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP97810381A EP0890400B1 (fr) 1997-06-17 1997-06-17 Procédé de moulage pour la fabrication des objets moulés métalliques
DE59707865T DE59707865D1 (de) 1997-06-17 1997-06-17 Giessverfahren zum Herstellen metallischer Giesslinge
PL98326729A PL186378B1 (pl) 1997-06-17 1998-06-08 Sposób odlewania odlewów metalowych
KR1019980022535A KR100567360B1 (ko) 1997-06-17 1998-06-16 금속주물부재를제조하는주조법및주조몰드
JP16884298A JP4248623B2 (ja) 1997-06-17 1998-06-16 金属製鋳造部品の製造のための鋳造方法及び鋳型

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97810381A EP0890400B1 (fr) 1997-06-17 1997-06-17 Procédé de moulage pour la fabrication des objets moulés métalliques

Publications (2)

Publication Number Publication Date
EP0890400A1 EP0890400A1 (fr) 1999-01-13
EP0890400B1 true EP0890400B1 (fr) 2002-07-31

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EP97810381A Expired - Lifetime EP0890400B1 (fr) 1997-06-17 1997-06-17 Procédé de moulage pour la fabrication des objets moulés métalliques

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EP (1) EP0890400B1 (fr)
JP (1) JP4248623B2 (fr)
KR (1) KR100567360B1 (fr)
DE (1) DE59707865D1 (fr)
PL (1) PL186378B1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
DE10153719B4 (de) * 2001-10-31 2005-07-28 Siempelkamp Giesserei Gmbh & Co. Kg Verfahren zum Gießen von Bohrungen in dickwandigen Gussteilen und dafür geeigneter Gießkern
DE102004016132A1 (de) * 2004-04-01 2005-10-20 Dieter Schwarze Vollformgießverfahren und Gasableitungs- und Kühlkörper zur Verwendung in dem Vollformgießverfahren

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Publication number Priority date Publication date Assignee Title
EP1677926A2 (fr) 2003-10-28 2006-07-12 HOS Hottinger Systems GbR Procede de coulee de pieces moulees
DE10361535B4 (de) * 2003-10-28 2014-06-18 Gelson G. Montero Verfahren zum Gießen von Formteilen
DE102004013973B4 (de) * 2004-03-19 2015-02-26 Gelson Montero Verfahren zum Gießen von Formteilen
PL219714B1 (pl) * 2011-12-05 2015-06-30 Przedsiębiorstwo Innnowacyjne Odlewnictwa Specodlew Spółka Z Ograniczoną Odpowied Płyta chłodząca
KR101253244B1 (ko) 2013-01-22 2013-04-16 김준만 금속패널 제조장치 및 그 방법, 그리고 그 장치와 방법에 의해 제조된 금속패널
JP7009636B2 (ja) 2018-08-17 2022-01-25 富士フイルム株式会社 内視鏡システム
CN119205678A (zh) 2018-08-17 2024-12-27 富士胶片株式会社 内窥镜系统

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DE800594C (de) * 1949-08-12 1950-11-20 Johann Knieps Vorrichtung zum raschen Abkuehlen des beim Sandguss in die Sandform eingefuellten Giessgutes
DE855151C (de) * 1950-11-11 1954-04-08 Gussstahlwerk Bochumer Ver Ag Giessform und Verfahren zur Herstellung von Stahlbloecken
DE3118928A1 (de) * 1981-05-13 1982-12-02 Thyssen Industrie Ag, 4300 Essen Verfahren und vorrichtung zur herstellung von dickwandigen, hohlen gussstuecken
JPS59124655U (ja) * 1983-02-11 1984-08-22 トヨタ自動車株式会社 金型空冷兼温風エア払い装置
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JPH01157758A (ja) * 1987-12-15 1989-06-21 Mitsubishi Heavy Ind Ltd ニツケルアルミニウム青銅の鋳造法
US5213149A (en) * 1991-10-10 1993-05-25 Cmi International, Inc. Mold and method for making variable thickness cast articles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10153719B4 (de) * 2001-10-31 2005-07-28 Siempelkamp Giesserei Gmbh & Co. Kg Verfahren zum Gießen von Bohrungen in dickwandigen Gussteilen und dafür geeigneter Gießkern
DE102004016132A1 (de) * 2004-04-01 2005-10-20 Dieter Schwarze Vollformgießverfahren und Gasableitungs- und Kühlkörper zur Verwendung in dem Vollformgießverfahren

Also Published As

Publication number Publication date
EP0890400A1 (fr) 1999-01-13
PL326729A1 (en) 1998-12-21
KR19990007029A (ko) 1999-01-25
DE59707865D1 (de) 2002-09-05
JP4248623B2 (ja) 2009-04-02
KR100567360B1 (ko) 2006-07-03
JPH1110313A (ja) 1999-01-19
PL186378B1 (pl) 2003-12-31

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