EP3570992A1 - Casting mould for casting complexly shaped cast parts and use of such a casting mould - Google Patents
Casting mould for casting complexly shaped cast parts and use of such a casting mouldInfo
- Publication number
- EP3570992A1 EP3570992A1 EP18709763.9A EP18709763A EP3570992A1 EP 3570992 A1 EP3570992 A1 EP 3570992A1 EP 18709763 A EP18709763 A EP 18709763A EP 3570992 A1 EP3570992 A1 EP 3570992A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting
- branch
- feeder
- mold
- melt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005266 casting Methods 0.000 title claims abstract description 201
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 6
- 239000012778 molding material Substances 0.000 claims description 2
- 235000015250 liver sausages Nutrition 0.000 claims 1
- 230000000717 retained effect Effects 0.000 claims 1
- XYSQXZCMOLNHOI-UHFFFAOYSA-N s-[2-[[4-(acetylsulfamoyl)phenyl]carbamoyl]phenyl] 5-pyridin-1-ium-1-ylpentanethioate;bromide Chemical compound [Br-].C1=CC(S(=O)(=O)NC(=O)C)=CC=C1NC(=O)C1=CC=CC=C1SC(=O)CCCC[N+]1=CC=CC=C1 XYSQXZCMOLNHOI-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 229910045601 alloy Inorganic materials 0.000 abstract description 7
- 239000000956 alloy Substances 0.000 abstract description 7
- 239000000155 melt Substances 0.000 description 63
- 208000015943 Coeliac disease Diseases 0.000 description 26
- 238000007711 solidification Methods 0.000 description 17
- 230000008023 solidification Effects 0.000 description 17
- 238000009826 distribution Methods 0.000 description 16
- 238000002156 mixing Methods 0.000 description 15
- 238000000265 homogenisation Methods 0.000 description 4
- 239000012943 hotmelt Substances 0.000 description 4
- 230000035508 accumulation Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- 229910001092 metal group alloy Inorganic materials 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 229910018182 Al—Cu Inorganic materials 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000001175 rotational moulding Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/086—Filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- 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
- B22D27/08—Shaking, vibrating, or turning of moulds
Definitions
- the invention relates to a casting mold for casting complex-shaped, large-volume castings from a molten metal.
- Such molds typically include a casting mold-forming cavity and a supply system for feeding the casting to be cast to the casting
- the feed system comprises a sprue, a runner connected to the sprue, and a feeder system connected to the runner, wherein the
- the invention relates to a practical use of such a casting mold.
- the feeder system When feeding castings with casting molds of the type in question, the feeder system on the one hand serves to control the solidification direction of the cast melt, which is optimally directed towards the feeder. On the other hand, the volume of melt held in the feeder system compensates for the reduction in the specific volume of the poured melt during the liquid / solid phase transition.
- the feeder system is an additionally attached melt reservoir, from which melt can flow into the casting during cooling.
- Light metal alloys include, for example, hardenable AICu alloys.
- Mass accumulations are associated with alloys with a non-shelling, mushy and / or spongy solidification morphology
- Cylinder crankcase for an internal combustion engine in which two separate feed hoppers are provided, via which the melt is poured into the mold. From the filling funnels, the melt flows in each case via a run into the mold cavity delimited by the casting mold.
- the runners are guided by a crankcase block core. Of the Runners branch off drainage channels which lead to lower casting contours of the casting mold.
- the sprues are each aligned so that their mouths lie on a horizontal plane.
- a low-pressure mold casting method for casting metal castings such as cylinder heads or engine blocks of internal combustion engines, is known from DE 39 24 742 A1.
- the complexity of the castings to be cast with this method results from the fact that they have thinner walls in at least one area than in another area.
- liquid metal is forced out of a melt container through a riser pipe into the mold by means of gas pressure.
- the mold is arranged so that in her the thicker walls of the casting are lying on top and thus far away from the sprue over which the
- Metal enters the component imaging cavity of the mold.
- the liquid metal is directed at or near the downhole region of the mold into the sections which are the thinner ones
- the liquid metal can be supplied via a bottom run at a plurality of gate points the down near the casting near the area of the mold and are introduced into the thinner wall of the casting forming portions of the mold cavity.
- WO 2014/111573 A1 finally discloses a method for casting cast parts, in which a molten metal is poured off via a feeder or separate runners or casting channels into a mold cavity bounded by a casting mold and imaging the casting.
- the mold comprises moldings which determine the shape of the casting to be cast.
- the melt is conducted via at least two connections, at least one of which is formed as an additional, leading through one of the moldings and independent of the contour of the cast casting channel, in at least two sections of the mold cavity, which are assigned to different levels of casting to be cast ,
- For the casting of castings of the type considered here are suitable
- casting molds which are completely or partially formed as a core package.
- the mold is composed of a larger number of cores, which determine the inner and outer contour of the casting to be produced.
- the casting cores are usually made of a molding material or an easily destructible material as so-called "lost cores", which are destroyed during demolding of the casting.
- loss cores there are also known hybrid forms of core packages, in which, for example, the outer contour defining moldings are designed as reusable permanent mold parts, while the casting to be imaged inside recesses, cavities, channels, lines etc. are represented by lost cores.
- Core-package casting molds of the type described above are mainly used in gravity casting or low-pressure casting, these methods may also include a rotation of the mold after its filling with the melt to an optimized solidification course and, consequently, an optimal texture of the casting achieve.
- the object of the invention was to provide a casting mold which reliably allows to produce highly complex shaped castings also from alloys which are difficult to achieve in conventional procedure and uncertain in the quality of the casting result let shed.
- the invention has achieved this object in that such a casting mold according to claim 1 is formed.
- An inventively designed mold is particularly suitable for use in casting a cylinder crankcase for a
- Internal combustion engine made of a light metal melt, in particular an AICu melt.
- a casting mold according to the invention for casting complex-shaped, large-volume castings from a molten metal has a
- Feeder system or the casting run is connected via connections.
- the casting run with a branch directed away from the sprue along the feeder system and with a back-branch, which adjoins the branched branch, in the direction away branch of opposite direction along guided by the feeder system, wherein the feeder system is connected to both the weg réelle branch and with the back-branch over two or more along the respective branch distributed arranged gates.
- Mold cavity guided melt to even out so that adjusts an equally uniform temperature distribution in the casting. This Even with difficult to pour molten metals, especially in difficult to cast light metal melts, such as AICu melts, after filling the mold to a uniform
- Feeder system progresses.
- the homogenization of the temperature of the mold cavity supplied melt stream is achieved according to the invention, that the supplied via the sprue melt stream is first performed in a leading away from the sprue "away branch" along the feeder system, while already provided on the along the wegreckten branch provided in the gate system runs and then in the opposite direction to the run away from the sprinkling branch, "directed back branch", is analogously led back towards the sprue.
- the supplied via the sprue melt stream is first performed in a leading away from the sprue "away branch” along the feeder system, while already provided on the along the wegreckten branch provided in the gate system runs and then in the opposite direction to the run away from the sprinkling branch, "directed back branch”, is analogously led back towards the sprue.
- there is no direct connection between the sprue and the branch back Rather, only melt from the directed branch of the casting run in the
- melt streams of different temperatures mix and a melt temperature arises in the melt contained in this region, which, for example, the melt volume flows entering the region in question mean temperature of the inflowing in this area, maximum hot and maximum cooled melt streams corresponds.
- melt streams that are routed through those optionally existing further gates in the feeder system, along the directional and the backward branch of the casting between the - seen in the flow direction of the melt - at the end and at the beginning of the directed and of
- the melt passing into the casting mold cavity via the feeder system also has a uniform temperature distribution, as a result of which, even in the case of a filigree shaping, the melt to be imaged on the casting
- Design elements such as thin walls and fine webs or ribs, not only achieves optimum mold filling, but one as well
- the invention also makes it possible to develop components which are difficult to control, such as cylinder crankcases, for cast metal, which are known for their poor mold filling and feeding capacity, but which can develop high mechanical or thermal properties
- the mixing temperature in the feeder system can be adjusted by tuning the melt volume flows entering the individual regions of the feeder system via the gates provided there be set. For this purpose, the position on the respective branch of the run, the number or geometry, in particular the
- the mixing back of the branch which in each case is assigned to the branch in the feeder system and, consequently, the equalization of the temperature of the melt contained in the feeder system, can be directly influenced.
- the inventive design of a casting mold proves to be advantageous in all casting tasks in which a particularly homogeneous temperature distribution in the respectively to be cast melt and a uniform supply of the melt in the casting mold cavity representing the casting for the casting success are important.
- the invention for castings with an elongated, block-like basic shape, such as engine blocks, can be used as well as for
- Castings that have a cylindrical, embossed by an ellipsoidal or circular cross-section basic shape.
- Melt volume it may be appropriate to provide in the feeder system, a single sufficiently large feeder chamber, in
- the feeder chamber then serves as a mixing area for the over the away and the
- Such a feeder chamber can take over a feeding function in the sense of a make-up of melt in the mold cavity of the mold.
- the mixing and the concomitant equalization of the temperature distribution of the melt contained in the feeder system may be further optimized, it may be appropriate to provide two or more feeder chambers in the feeder system, each of which at least one gate both with the weg réelle branch and with backward branch of the run is connected. At two or more Food chambers contain the individual chambers only one
- Partial volume of the total melt volume required for the make-up of the mold cavity By the correspondingly lower
- the volume of the individual feeder chambers results in a particularly intensive mixing of the differently tempered melt streams entering the branches of the casting run. In this way, it can be ensured with comparatively little effort that the melt volumes present in the respective melting chamber as a whole have the desired mixing temperature, and the formation of local temperature differences is avoided. In this regard, it proves to be particularly favorable when the of the
- the feeder chambers can be provided with each other in addition, the
- Internal combustion engines with cylinder openings arranged in a row suitable variant of the invention is characterized in that the feeder system at least one, in particular at least two
- branched branch branches back branch or runs
- the branched branch is divided into two branched branches, one each along the gap between them
- Feeder chambers outboard side of the feeder chambers runs, whereas at least one associated with the wegubeneten branches back-aligned branch runs in the space between the feeder chambers.
- the uniform division of the melt onto the feeder chambers can be supported by the fact that the runner in the
- each returning branch have their own level, so that the melt is layered during convergence and does not collide.
- Another embodiment of the invention which is particularly important for practice, is that of the feeder system or of the run to
- Mold cavity leading connection is performed only outside of the cavity occupied by the mold cavity volume of the mold.
- the melt is introduced into the mold exclusively via connections which are formed on the outside in the region of the walls of the casting mold cavity which delimit the casting mold cavity
- Mold cavity is passed, the uniformity of the Temperature distribution of the inflowing into the mold cavity in the casting operation melt and the uniformity of the mold filling optimized.
- melt By taking place exclusively outside of the mold cavity connection temperature differences in the melt introduced into the mold cavity are avoided in the casting operation. These may occur when melt is also passed into the mold cavity via heated inner cores heated by the melt flowing into the mold cavity, which images recesses, cavities, channels and the like in the casting. Due to the heating of the internal cores, the melt flowing through them would cool less than the melt supplied via the external connections. Since the melt is supplied to the mold cavity only via external connections, it is thus ensured that the melt on its way from
- Mold cavity is connected, the feed system associated with the inlet openings of the connections are arranged together in a plane. In this way, the melt is discharged from the feeder system at the same level at which a uniform temperature of the melt contained in the possibly several chambers is removed. This also contributes to the fact that the reaching into the mold cavity
- the casting mold according to the invention is suitable for gravity casting or low pressure casting.
- the casting mold according to the invention can be composed of a plurality of cores, of which certain cores map the outer shape and other cores in the casting to be produced
- the cores of the core package as a whole can be designed as lost cores, which are destroyed in the demolding of the casting, or some of the cores are formed as permanent moldings that can be used repeatedly.
- Mold cavity lie, for example, be useful, in a mold according to the invention designed as a permanent mold part
- Casting cores are formed.
- the invention thus achieves the representation of a cylinder crankcase in the core package process with a feed system in which the melt is divided into two casting branches, so that the connected thereto, optimally pot-like feeder chambers comprehensive feed system for homogenization of the temperature distribution in the feeder system and subsequently in the molded by the mold component serves.
- the feeder system in the Casting operation, is filled by its two- or multiple gates to the branches of the casting run by melt different temperature.
- Melt is fed to the casting cavity forming the casting.
- the pouring course made possible by the design according to the invention makes it possible, in particular in combination with the feeding of the mold cavity, and optionally with it, that is optionally exclusively from the outside
- the feeders and external connections present on the casting after demolding of the casting can be easily weight-neutralized by common machining methods, such as e.g. Drilling, to be removed.
- Mass accumulations on the casting which are provided in the prior art to prevent local premature solidification of the melt, but do not fulfill any other technical purpose can be avoided in a mold according to the invention as well as to avoid freezing phenomena consuming channel guides in the connection of the feeder system to the
- cooling molds can also be arranged in a casting mold according to the invention in the region of the mold cavity in order there to effect locally accelerated solidification in a manner known per se
- FIG. 1 shows a casting mold for casting a cylinder crankcase for an internal combustion engine in a cross section
- Figure 2 is a cast in the mold 1 cylinder crankcase after demolding in the un-cleaned state in a view from above.
- FIG. 3 shows the cylinder crankcase according to FIG. 2 in a frontal view of its one end face
- FIGS. 2 and 3 the cylinder crankcase according to FIGS. 2 and 3 in one
- Fig. 5 shows another mold for casting a
- Fig. 1 The mold 1 shown in Fig. 1 is used for casting of the cylinder crankcase Z shown in Figures 2-4, often called cylinder blocks, for an internal combustion engine made of an AICu alloy.
- Fig. 1 shows schematically a section transverse to the longitudinal extent of the cylinder crankcase Z.
- Trained as a core package mold 1 comprises two trained as permanent moldings outer shells 2.3, between which a larger number of than molded in the usual way from molding sand lost G tellkemen 4 are arranged.
- the outer shells 2, 3 and the casting cores 4 surround a mold cavity 5, which images the cylinder crankcase Z to be cast with its four cylinder openings Z ⁇ arranged in series and the design features usually provided for such internal combustion engine cylinder crankcases.
- the casting cores 4 delimit a sprue, not visible in FIG. 1, perpendicular from the side 6 of the casting mold 1 arranged at the top in FIG. 1, a casting run 7 connected to the sprue, a casting run 7 and the casting cavity 5 connected feeder system 8 and for connecting the mold cavity 5 to the runner 7 or the feeder system 8 provided connections 9a, 9b.
- the mold 1 is shown in Fig. 1 in the position shown for filling with melt, wherein the opening of the sprue faces up and the feeder system 8 is arranged on the underside of the mold 1.
- the mold 1 After filling the melt, the mold 1 is closed in a conventional manner and in a known manner about a parallel to the longitudinal extent of the mold 1 aligned pivot axis rotated by 180 °, for example, until the feeder system 8 is arranged above. In this way, a running in the direction of the feeder system 8 uniform solidification of the filled mold 1 in the melt
- Cylinder crankcase Z as a solid cast body from, but there are after demoulding as a result of in the sprue 10, in the run 7, in the feeder system 8 and in the connections 9a, 9b solidifying melt these originally hollow form of the mold elements 1 with the
- Cylinder crankcase Z explain, as shown in Figures 2-4.
- the feeder system 8 therefore comprises two juxtaposed rows extending in the longitudinal direction L of the cylinder crankcase Z, each having five pot-type feeder chambers 11, 12. Adjacent to each other feeder chambers 11, 12 of each row are connected by gates 13,14. The rows of
- Feeder chambers 11, 12 define a gap 15 between them.
- the feeder chambers 11, 12 are above the provided for a mounting of a cylinder head not shown here top surface ZD of
- Cylinder crankcase Z arranged and have identical shapes and volumes.
- the bottoms of the feeder chambers 11, 12 are arranged together in a horizontal plane H1, which is aligned parallel to the top surface ZD of the cylinder crankcase Z.
- the runner 7 is also in a parallel to the top surface ZD
- the runner 7 is divided starting from the head 17 of the demolded cylinder crankcase Z as slightly conically tapered in the direction of the runner 7 tapered sprue 10 into two branches 18,19, seen in the flow direction S in the casting operation in the mold 1 melt seen from Einguss 10 are directed away.
- the branched branches 18, 19 in a further curve pass into a section aligned against the respective other branch 19, 18 which extends across the width of the respective row of feeder chambers 11, 12 extends.
- the branched branches 18, 19 of the run 7 open together in a branch 20 of the run directed back in the direction of the pouring head 17.
- This back-directed branch 20 of the run 7 has a cross-sectional area which corresponds at least approximately to the sum of the cross-sectional areas of the directed branches 18, 19. In this way, the back-directed branch 20 can safely receive the melt volumes flowing into it via the knurled branches 18, 19.
- the back-directed branch 20 is arranged in the intermediate space 15 centrally between the rows of feeder chambers 11, 12 and extends in
- Flow direction S considered opposite to that of the sprue 10th directed branches 18,19 on the gate 10 to.
- the back-directed branch 20 terminates in front of the pouring head 17, so that in the casting operation, melt passes into the back-directed branch 20 exclusively via the knurled branches 18, 19.
- arranged feeder chambers 11 is via a respective gate 21 with the weggestichteten branch 18 and each also in uniform
- each of the feeder chambers 11 is connected via a respective gate 23 and each of the feeder chambers 12 via a respective gate 24 with the back-branch 20.
- the gates 21 - 24 are also distributed at equal intervals along the longitudinal axis L, wherein the each feeder chamber 11, 12 respectively associated gates 21, 22; 23,24 opposite to each other and centrally relative to the respective wall of the feeder chambers 11, 12 are positioned.
- the mold cavity 5 is connected via links 9a, 9b directly to the
- connection 9a connection 9a or the feeder chambers 11, 12 (connections 9b) connected.
- the connections 9a, 9b are exclusively formed outside the mold cavity 5, so that no melt passes into the mold cavity 5 via casting cores 4 placed in the mold cavity 5. According to the principle of communicating tubes, the
- the casting mold 31 comprises a cover core 32, an outer core 33 carrying the cover core 32, a further outer core 34 carrying the outer core 33, two outer shell cores 35, 36 forming the outer end of the casting mold 31 in the region of the mold cavity of the casting mold 31 on which the outer cores 33,34 and the lid core 32 are supported, one the contour of the interior of the
- Casting imaging contour-forming core 37 which forms the lower end of the mold and on which the pot cores 35,36 are supported, and within the laterally bounded by the shell cores 35,36 space cores 38,39, which determine the outer contour of the casting.
- lid core 32 In the lid core 32 are directed away from here not visible sprue, outwardly extending branches 40,41 and a centrally arranged
- molded back branch 42 of the casting run In the intermediate space between the respectively arranged on the outside, directed away branch 40,41 and the back branch 42 is in each case a feeder pot 43,44 in the lid core 32 and the outer cores 33,34 formed.
- the feeder pots 43,44 accordingly sit directly on the top surface of the casting (e.g.
- the feed pans 43,44 feed thus all areas, which are arranged in direct local proximity to them are, such as the cylinder head screw pipes.
- Branched branches 40,41 are via junctions that are close to
- Outer core 33 are arranged, connected to the respectively associated riser 43,44, whereas the back-branch 42 is connected via connections with the feeder pots 43,44, which are offset in the direction of the top of the lid core 32.
- the shell cores 35, 36 and the respective cores 38, 39 that determine the outer contour of the casting also additionally delimit external feed volumes 45, 46, which are connected to one of the feeder pots 43, 44 via a respective feed 47, 48.
- the external feed volumes 45, 46 are filled via the associated inlet 47, 48, which is always connected to one of the feed pots 43, 44.
- the external feed volumes 45, 46 thereby feed everything in their immediate vicinity, e.g. Mass accumulations through functional integration.
- Cylinder crankcases ZK particular mold 31 are always on the same level, are the external feed volumes 45,46 at different heights.
- the mold 31 For filling with melt, the mold 31 is rotated for example by a transverse to the longitudinal extent of the cylinder crankcase ZK to be cast by 80 °, so that the lid core 32 is located with the directional branches 40,41 and the back branch 42 at the bottom. Hot melt M is directed into the straightened branches 40,41 via the gate. From the bent branches 40, 41, the melt M cooled on the way through the turned branches 40, 41 passes into the branch 42 and back into the feed pots 43, 44 (FIG. 6).
- the appropriately tempered melt M rises via the inlets 47, 48 on the one hand into the external feed volumes 45, 46 and on the other hand via the gates, via which the feeder heads 43, 44 are connected directly to the casting mold cavity forming the casting, into the casting mold cavity (FIG ).
- the casting mold 31 is closed in a manner known per se and turned through 180 ° into the solidification position transversely to its longitudinal extent (FIG. 10).
- the mold according to the invention thus the melt is filled via at least one gate into the mold.
- the melt is then divided into two separate, directed away from the sprue branches, which are preferably aligned with a corresponding basic shape of the feeder system so that they are at least partially parallel.
- the melt, which is split up on the branches of the run, is returned to the pot-like feeder chambers via a diversion.
- a curve can be provided which leads out of the main plane, in which the casting is mainly, in order to decelerate the flow velocity of the melt flowing through the respective branch oriented branch.
- Curve train subsequent section of each branch is then back in the main level of the watering. Following the straightened branches, the melt is returned to at least one central one
- the runners are connected via gates with the feeder chambers.
- the connection of the feeder chambers is chosen so that it is optimal in the chambers
- the feeder chambers are connected to each other via gates.
- the melt flow and the achieved temperature distribution can be adapted to the respective casting task.
- connection points preferably go on existing slugs and sit on surface, which are part of the standard post-processing.
- the feeder system can be easily removed, for example, by drilling during the pre- and post-processing of the respectively obtained component (cylinder crankcase Z).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL18709763T PL3570992T3 (en) | 2017-01-17 | 2018-01-17 | Casting mould for casting complexly shaped cast parts and use of such a casting mould |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017100805.5A DE102017100805A1 (en) | 2017-01-17 | 2017-01-17 | Casting mold for casting complex shaped castings and use of such a casting mold |
PCT/IB2018/000021 WO2018134672A1 (en) | 2017-01-17 | 2018-01-17 | Casting mould for casting complexly shaped cast parts and use of such a casting mould |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3570992A1 true EP3570992A1 (en) | 2019-11-27 |
EP3570992B1 EP3570992B1 (en) | 2020-09-09 |
Family
ID=61599523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18709763.9A Active EP3570992B1 (en) | 2017-01-17 | 2018-01-17 | Casting mould for casting complexly shaped cast parts and use of such a casting mould |
Country Status (11)
Country | Link |
---|---|
US (1) | US11014144B2 (en) |
EP (1) | EP3570992B1 (en) |
JP (1) | JP6858863B2 (en) |
KR (1) | KR102178737B1 (en) |
CN (1) | CN110191773B (en) |
DE (1) | DE102017100805A1 (en) |
MX (1) | MX2019008443A (en) |
PL (1) | PL3570992T3 (en) |
RU (1) | RU2717755C1 (en) |
WO (1) | WO2018134672A1 (en) |
ZA (1) | ZA201904169B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018128020B4 (en) * | 2018-11-09 | 2024-05-23 | Bayerische Motoren Werke Aktiengesellschaft | Mould and method for producing a crankcase |
DE102018128021A1 (en) * | 2018-11-09 | 2020-05-14 | Bayerische Motoren Werke Aktiengesellschaft | Mold and method for manufacturing a crankcase |
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KR102178737B1 (en) | 2020-11-16 |
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CN110191773A (en) | 2019-08-30 |
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US11014144B2 (en) | 2021-05-25 |
ZA201904169B (en) | 2021-02-24 |
JP2020505232A (en) | 2020-02-20 |
PL3570992T3 (en) | 2021-03-08 |
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