CN114833310B - Shaping cooling core for forming casting device - Google Patents
Shaping cooling core for forming casting device Download PDFInfo
- Publication number
- CN114833310B CN114833310B CN202111524490.1A CN202111524490A CN114833310B CN 114833310 B CN114833310 B CN 114833310B CN 202111524490 A CN202111524490 A CN 202111524490A CN 114833310 B CN114833310 B CN 114833310B
- Authority
- CN
- China
- Prior art keywords
- core
- engine block
- chill
- core portion
- mold assembly
- 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.)
- Active
Links
- 238000005266 casting Methods 0.000 title claims abstract description 31
- 238000001816 cooling Methods 0.000 title claims abstract description 26
- 238000007493 shaping process Methods 0.000 title description 4
- 238000005192 partition Methods 0.000 claims abstract description 34
- 239000004020 conductor Substances 0.000 claims description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 6
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 6
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 5
- 239000011343 solid material Substances 0.000 claims description 5
- 210000001787 dendrite Anatomy 0.000 description 6
- 238000007711 solidification Methods 0.000 description 6
- 230000008023 solidification Effects 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910001338 liquidmetal Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 3
- 238000007528 sand casting Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- 239000004557 technical material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
- B22C9/065—Cooling or heating equipment for moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/103—Multipart cores
-
- 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
- B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
- B22D15/02—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor of cylinders, pistons, bearing shells or like thin-walled objects
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
A mold assembly for forming a casting apparatus, such as an engine block, is described. The mold assembly includes a forming core and a core assembly disposed on the forming core. The core assembly defines a plurality of partitions of the engine block. The shaped core includes a first core portion, a second core portion disposed on the first core portion, and a plurality of third core portions, wherein the second core portion is a semi-cylindrical element. The third cooling core portion is disposed adjacent to the plurality of partitions of the engine block.
Description
Background
In sand casting processes, a disposable mold assembly is assembled from a plurality of resin bonded sand cores defining the inner and outer surfaces of the apparatus, wherein each sand core may be formed by blowing resin coated foundry sand into a core box and curing it therein. One example includes a sand casting process for an internal combustion engine block.
In one embodiment, the mold assembly method includes positioning a base core on a surface and building or stacking individual mold elements to shape such cast features. When casting an internal combustion engine block, the elements may include sides, ends, valleys, water jackets, cam openings, and crankcase of the cylinder block, with additional cores present depending on the engine design.
Removal of thermal energy from the liquefied metal in the mold assembly is an important consideration in the casting process. The rapid solidification and cooling of the casting apparatus promotes a fine grain structure in the solidified metal, resulting in desired material properties including high tensile strength, high fatigue strength, and good machinability. As a non-limiting example, when the liquefied metal is an aluminum alloy, dendrites may form during solidification of the liquefied metal. The length, orientation, and configuration of dendrites can affect the structure and material properties of the casting device. Excessive dendrite length, orientation and configuration can negatively impact tensile strength and fatigue strength, thereby affecting the service life of the casting apparatus. Achieving a smaller DAS (dendrite arm spacing) in sand casting blocks can be challenging in certain locations, such as near the exhaust window and cam hole areas of the engine block.
Accordingly, there is a need to improve cooling of the casting apparatus during solidification of the liquefied metal in order to reduce DAS and porosity, particularly in the high stress separator region. Further, it is desirable to manufacture the cylinder block casting apparatus in such a manner as to enhance the mechanical properties of the material in the bulkhead region, to improve the casting efficiency, and to improve the casting accuracy.
Disclosure of Invention
The concepts provided herein provide a shaped chill (profiled chill) for improving cooling of a casting apparatus during solidification of liquid metal. The improved cooling provided by the shaped chill refines the cast aluminum microstructure by improving cooling during solidification of the liquid metal. The improvement in rapid cooling of liquid metal during solidification refines the cast aluminum microstructure by reducing Dendrite Arm Spacing (DAS) and reducing porosity, thereby achieving improved mechanical properties in use.
When the casting device is an engine block for an internal combustion engine, a shaped chill can be used to improve the material properties in the region of the separator plate. The shaped chill has a thermal conductivity much higher than the foundry sand to conduct heat from the portion of the casting apparatus. The shaped chill comprises one or more heat conducting elements which are assembled in a mold in such a way that a certain part of the features of the casting apparatus is shaped. The shaped chill may be placed in a base core tool, wherein the base core is formed around the base core tool, or the shaped chill may be assembled into the base core during mold assembly.
One aspect of the present disclosure includes a mold assembly for casting an engine block, wherein the mold assembly includes a shaped chill and a core assembly disposed on the shaped chill. The core assembly defines a plurality of partitions of the engine block. The shaped core includes a first core portion, a second core portion disposed on the first core portion, and a plurality of third core portions, wherein the second core portion is a semi-cylindrical element. The third cooling core portion is disposed adjacent to the plurality of partitions of the engine block.
Another aspect of the present disclosure includes the first cold core portion being arranged as a rectangular prism, and wherein the semi-cylindrical elements of the second cold core portion are arranged on a surface of the first cold core portion.
Another aspect of the present disclosure includes the semi-cylindrical element of the second core portion being adjacent to saddle shaped regions of a plurality of partitions of the engine block.
Another aspect of the present disclosure includes a front bulkhead, a rear bulkhead, and a plurality of intermediate bulkheads, wherein the plurality of third core portions includes: one of the third core portions disposed adjacent to an inner portion of the front bulkhead; one of the third core portions disposed adjacent to an inner side portion of the rear bulkhead; and the third core portion being arranged in a paired set adjacent to the first and second side portions of each of the plurality of intermediate baffles.
Another aspect of the disclosure includes that each of the plurality of partitions includes an end portion, wherein the first cooling core portion is adjacent to the end portion of the plurality of partitions of the engine block.
Another aspect of the disclosure includes a forward bulkhead, a aft bulkhead, and a plurality of intermediate bulkheads, wherein each bulkhead includes a saddle portion, an end portion, and a side portion, and wherein the first cold core portion is arranged as a rectangular prism, wherein semi-cylindrical elements of the second cold core portion are arranged on a surface of the first cold core portion, and wherein the third cold core portion is arranged on the semi-cylindrical elements of the second cold core portion.
Another aspect of the disclosure includes the semi-cylindrical element of the second core portion being disposed adjacent the saddle portion of each of the plurality of bulkheads of the engine block.
Another aspect of the disclosure includes the plurality of third core portions being disposed adjacent to sides of the plurality of partitions of the engine block.
Another aspect of the present disclosure includes: one of the third core portions is disposed adjacent to an inner portion of the front bulkhead; one of the third core portions is disposed adjacent to an inner side portion of the rear bulkhead; and the third cold core portions of the paired sets are disposed adjacent to the first and second side portions of each of the plurality of intermediate baffles.
Another aspect of the disclosure includes the first cold core portion being disposed adjacent an end portion of the plurality of bulkheads of the engine block.
Another aspect of the present disclosure includes a shaped chill disposed on a shaped chill plate.
Another aspect of the present disclosure includes the shaped chill being made of a thermally conductive material.
Another aspect of the disclosure includes that the thermally conductive material is one of a copper alloy, an aluminum alloy, a steel alloy, or an iron alloy.
Another aspect of the present disclosure includes that the first, second and third core portions are made of a solid material.
Another aspect of the present disclosure includes that the first, second and third core portions include internal fluid passages for containing coolant.
Another aspect of the present disclosure includes a shaped chill for a mold assembly configured for casting an apparatus having an inner baffle. The shaped core includes a first core portion, a second core portion disposed on the first core portion, and a plurality of third core portions. The first core portion is a rectangular prism including a first surface, the second core portion is a semi-cylindrical element disposed on the first surface of the first core portion, and the plurality of third core portions are disposed on the first core portion and extend from the semi-cylindrical element of the second core portion. The third core portion is disposed adjacent to the inner bulkhead portion of the apparatus.
The invention also comprises the following scheme:
Scheme 1. A mold assembly for casting an engine block, comprising:
A forming cooling core and a mold core assembly arranged on the forming cooling core;
wherein the core assembly defines a plurality of partitions of the engine block;
Wherein the shaped core comprises a first core portion, a second core portion disposed on the first core portion, and a plurality of third core portions;
Wherein the second core portion is a semi-cylindrical element; and
Wherein the plurality of third core portions are disposed adjacent to the plurality of partitions of the engine block.
Solution 2. The mold assembly of solution 1, wherein the first chill portion is arranged as a rectangular prism, and wherein the semi-cylindrical elements of the second chill portion are arranged on a surface of the first chill portion.
The mold assembly of claim 1, wherein the second core portion disposed as the semi-cylindrical element is adjacent to saddle regions of the plurality of baffles of the engine block.
The mold assembly of claim 1, wherein the plurality of partitions of the engine block comprises a front partition, a rear partition, and a plurality of intermediate partitions; and
Wherein the plurality of third core portions disposed adjacent to the plurality of partitions of the engine block include: one of the third core portions disposed adjacent to an inner portion of the front bulkhead; one of the third core portions disposed adjacent to an inner side portion of the rear bulkhead; and the third core portion being arranged in a paired set adjacent to the first and second side portions of each of the plurality of intermediate baffles.
The mold assembly of claim 1, wherein each of the plurality of baffles of the engine block includes an end portion; and
Wherein the first cooling core portion is adjacent to the end portions of the plurality of partitions of the engine block.
Scheme 6. The mold assembly according to scheme 1:
wherein the plurality of partitions of the engine block include a front partition, a rear partition, and a plurality of intermediate partitions;
wherein each of the plurality of bulkheads of the engine block includes a saddle portion, an end portion, and a side portion; and
Wherein the first cold core portion is arranged as a rectangular prism, wherein the semi-cylindrical elements of the second cold core portion are arranged on a surface of the first cold core portion, and wherein the plurality of third cold core portions are arranged on the semi-cylindrical elements of the second cold core portion.
The mold assembly of claim 6, wherein the semi-cylindrical element of the second core portion is disposed adjacent to the saddle portion of each of the plurality of bulkheads of the engine block.
The mold assembly of claim 6, wherein the third plurality of cold core portions are disposed adjacent sides of the plurality of partitions of the engine block.
The mold assembly of claim 8, further comprising: one of the third core portions disposed adjacent to an inner portion of the front bulkhead; one of the third core portions disposed adjacent to an inner side portion of the rear bulkhead; and the third core portion being disposed in a paired set adjacent the first and second side portions of each of the plurality of intermediate baffles.
The mold assembly of claim 6, wherein the first cold core portion is disposed adjacent to an end portion of each of the plurality of bulkheads of the engine block.
Solution 11. The mold assembly of solution 1, further comprising a shaped chill disposed on the chill plate.
Solution 12. The mold assembly of solution 1, comprising a shaped chill made of a thermally conductive material.
The mold assembly of aspect 12, wherein the thermally conductive material comprises one of a copper alloy, an aluminum alloy, a steel alloy, or an iron alloy.
The mold assembly of claim 1, comprising a first core portion, a second core portion, and a third core portion made of solid material.
The mold assembly of claim 1, wherein the first, second, and third chill core portions comprise internal fluid passages containing a coolant.
Aspect 16. A shaped chill for a mold assembly configured for casting an apparatus having an inner bulkhead portion, the shaped chill comprising:
A first core portion, a second core portion disposed on the first core portion, and a plurality of third core portions;
Wherein the first cold core portion is a rectangular prism comprising a first surface;
Wherein the second core portion is a semi-cylindrical element disposed on the first surface of the first core portion;
wherein the plurality of third cold core portions are disposed on the first cold core portion and extend from the semi-cylindrical elements of the second cold core portion; and
Wherein the plurality of third cold core portions are disposed adjacent to the inner bulkhead portion of the device.
The shaped chill of claim 16, further comprising a shaped chill disposed on the chill plate.
The shaped chill of claim 16, wherein the shaped chill is made of a thermally conductive material comprising one of a copper alloy, an aluminum alloy, a steel alloy, or an iron alloy.
The shaped chill of claim 16, wherein the first, second, and third chill portions are made of a solid material.
The shaped chill of claim 16, wherein the first, second, and third chill core sections comprise internal fluid passages containing a coolant.
The above summary is not intended to represent each possible embodiment, or every aspect, of the present disclosure. Rather, the foregoing summary is intended to illustrate some of the novel aspects and features disclosed herein. The above features and advantages, and other features and advantages of the present disclosure will be readily apparent from the following detailed description of the representative embodiments and modes for carrying out the present disclosure when taken in connection with the accompanying drawings and claims.
Drawings
One or more embodiments will now be described, by way of example, with reference to the accompanying drawings, in which:
Fig. 1 schematically illustrates an isometric view of an engine block mold assembly for a V-cylinder configuration engine according to an embodiment of the present disclosure that includes a profiled cooling core.
Fig. 2 schematically illustrates an isometric view of an embodiment of a shaped chill for an engine block mold assembly according to the present disclosure.
Fig. 3 schematically illustrates a bottom view of a portion of an engine block mold assembly including an embodiment of a profiled cooling core according to the present disclosure.
FIG. 4 schematically illustrates a mid-section side cross-sectional view of a portion of an engine block mold assembly including an embodiment of a profiled cooling core according to the present disclosure.
Fig. 5 schematically illustrates a mid-section longitudinal cross-section of a portion of an engine block mold assembly including an embodiment of a profiled cooling core according to the present disclosure.
Fig. 6 schematically illustrates an isometric view of an engine block mold assembly for an in-line cylinder configuration including an embodiment of a profiled cooling core according to the present disclosure.
The figures are not necessarily to scale and may present a somewhat simplified representation of various preferred features of the present disclosure, including, for example, specific dimensions, orientations, positions, and shapes, as disclosed herein. Details regarding these features will be determined in part by the particular intended application and use environment.
Detailed Description
As described and illustrated herein, the components of the disclosed embodiments can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description is not intended to limit the scope of the disclosure, as claimed, but is merely representative of possible embodiments thereof. In addition, while numerous specific details are set forth in the following description in order to provide a thorough understanding of the embodiments disclosed herein, some embodiments may be practiced without some of these details. In addition, for the sake of clarity, certain technical material that is known in the related art has not been described in detail so as not to unnecessarily obscure the present disclosure. For convenience and clarity, directional terms, such as top, bottom, left, right, up, over, above, below, beneath, rear, and front, may be used with respect to the accompanying drawings. These and similar directional terms should not be construed to limit the scope of the disclosure. The present disclosure as shown and described herein may be practiced in the absence of elements not specifically disclosed herein. Furthermore, there is no intention to be bound by any expressed or implied theory presented herein. Corresponding reference characters indicate corresponding parts or features throughout the several views of the drawings.
Referring to the drawings, FIGS. 1-5 illustrate various aspects of a mold assembly 100 including a shaped chill 50 consistent with embodiments disclosed herein. In one embodiment, and as shown with reference to FIGS. 1-5, the mold assembly 100 and shaped chill 50 are associated with casting a V-8 engine block 10 for an internal combustion engine. In one embodiment, and as shown with reference to FIG. 6, a mold assembly 600, an embodiment of a shaped chill 650, a mold gate apparatus 692 are associated with casting an in-line four-cylinder engine block 610 for an internal combustion engine. As a non-limiting example, embodiments of the shaped chill 650 having the features described herein may be used to form engine blocks having cylinder configurations of V4, V6, V10, V12, etc.; forming an engine block having an inline cylinder structure of L2, L3, L5, L6, L8, etc.; forming an engine block having a W-shaped cylinder configuration; forming an engine block having an opposed cylinder configuration; forming an engine block having a single cylinder configuration, and so forth. Alternatively, the mold assembly and the shaped chill may be associated with forming another casting apparatus using the features of the shaped chill described herein. In all figures, the elements may be described with reference to a transverse or x-axis 7, a longitudinal or y-axis 8 and a height or z-axis 9, as well as an associated xy-plane, an associated xz-plane and an associated yz-plane.
Referring again to fig. 1, an isometric view of an engine block mold assembly 100 for an engine block 10 arranged in a V-shaped cylinder configuration is schematically shown and includes an engine block 10 including a cylinder liner (CYLINDER LINER) defining a cylinder 11 disposed on a mold gate device 92 and disposed in a core box 90 with an embodiment of a profiled cooling core 50 disposed thereon. The illustrated features of the engine block 10 include an outer portion of the front bulkhead 12, a cam bore opening 30, and an oil pan skirt 32. The perspective view shows the engine block mold assembly 100 and the engine block 10 at the end of the molding process, with the engine block 10 in an inverted position. The bottom surface 56 of the shaped chill 50 is shown.
To form the engine block 10, a core assembly is formed over the shaped chill 50 and the mold gate apparatus 92 within the engine block mold assembly 100. The core assembly includes, for example, a crankcase core, an end core, a side core, a water jacket slab core assembly, a tappet Gu Xingxin, and a cap core. Shaping the chill 50 and the core assembly shapes portions of features of the casting apparatus, including shaping a plurality of baffles. Liquid metal is poured into the engine block mold assembly 100 and cooled to form the casting apparatus.
Referring again to FIG. 2, an isometric view of an embodiment of a shaped chill 50 is shown having a first chill portion 52, and a second chill portion 60 and a plurality of third chill portions 64 disposed on the first chill portion. In one embodiment, the shaped chill 50 is disposed on a chill plate 70. The shaped chill 50 is more thermally conductive than the foundry sand and readily conducts heat from the portion of the casting apparatus that is in contact therewith.
The first core portion 52 is arranged as a rectangular prism having a top surface 54 and a bottom surface 56, as previously described with reference to fig. 1. The portion 55 of the top surface 54 in the xy plane is disposed adjacent to the end portions 24 of the plurality of bulkheads formed in the engine block 10 during casting. In one embodiment, the first core portion 52 may be made of a solid block. Alternatively, the first cooling core portion 52 may include cooling channels.
The second core portion 60 is a semi-cylindrical element having a curved surface 62 in the xz plane and is disposed on the top surface 54 of the first core portion 52. The curved surface 62 of the semi-cylindrical element of the second core portion 60 is adjacent to the plurality of saddle regions (saddle region) 26 of the plurality of partitions formed in the engine block 10 during casting. Saddle region 26 is a semi-cylindrical portion upon which the engine crankshaft and associated bearings are assembled.
A plurality of third core portions 64 are disposed on the top surface 54 of the first core portion 52 on top of the second core portion 60 and are disposed longitudinally adjacent to the plurality of partitions of the engine block 10. Each third core segment 64 has a quasi-triangular shape in the xz-plane, including a flat tip 65.
The shaped core 50 having the first core portion 52, the second core portion 60, and the plurality of third core portions 64 may be an assembly of components or may be formed as an integral device having features as described herein.
The shaped chill 50 is advantageously made of a thermally conductive material, such as a ferrous alloy, a steel alloy, a copper alloy, an aluminum alloy, or the like. In one embodiment, the shaped chill 50 is made from a solid mass of material. Alternatively, one or more of the first, second, and third core portions may include an internal fluid passage 58 configured to contain a circulating coolant.
Referring again to fig. 3, a bottom view of a portion of the engine block 10 and the bottom surface 56 of the shaped chill 50 in the xy plane is shown to indicate a position of a mid-section side sectional view in the xz plane shown with reference to fig. 4 and to indicate a position of a mid-section longitudinal sectional view in the yz plane shown with reference to fig. 5.
Referring again to FIG. 4, a mid-section side cross-sectional view of the engine block 10 and portions of the shaped chill 50 is shown in the xz plane. The engine block 10 includes a cylinder liner defining a cylinder 11, an intermediate baffle 20 including a cam bore opening 30 and a surrounding area 31, and an oil pan skirt 32. The shaped chill 50 includes one of the third chill sections 64 and the first chill section 52. As shown, the third core portion 64 has a flat tip 65 that is adjacent to the surrounding area 31 of the cam hole opening 30.
Referring again to fig. 5, a mid-section longitudinal cross-sectional view of the engine block 10 and the shaped chill 50 is shown in the yz plane. The engine block 10 includes a cylinder liner defining a cylinder 11 and a plurality of bulkheads including a front bulkhead 12, a rear bulkhead 16, and a plurality of intermediate bulkheads 20. Each of the plurality of partitions includes a pair of end portions 24 and a saddle region 26, and the shaped core 50 includes a first core portion 52, a second core portion 60, and a plurality of third core portions 64.
The plurality of third core portions 64 are arranged as follows. One of the third core portions 64 is disposed adjacent to the inner side portion 14 of the dash panel 12. One of the third core portions 64 is disposed adjacent to the inner side portion 18 of the rear bulkhead 16. The paired sets of third core portions 64 are disposed adjacent to the first and second side portions 21, 22, respectively, of each of the plurality of intermediate partitions 20.
The concepts described herein provide a forming chill 50 for a mold assembly, such as described with reference to fig. 2, configured for casting an apparatus having an inner bulkhead portion. In one embodiment, the inner bulkhead portion may be a respective first or second side portion 21, 22 of one of the inner portion 14 of the front bulkhead 12, the inner portion 18 of the rear bulkhead 16, or the intermediate bulkhead 20.
The shaped chill 50 provides improved cooling during solidification at locations near the vent window/aperture and around the cam-hole area in the bulkhead as compared to prior art chills. This serves to refine the cast aluminum microstructure by reducing the cast aluminum Dendrite Arm Spacing (DAS) and reducing porosity, thereby achieving improved mechanical properties in use.
The detailed description and drawings or figures are supportive and descriptive of the present teachings, but the scope of the present teachings is limited only by the claims. While certain best modes and other embodiments for carrying out the present teachings have been described in detail, various alternative designs and embodiments exist for practicing the present teachings as defined in the claims.
Claims (18)
1. A mold assembly for casting an engine block, comprising:
A forming cooling core and a mold core assembly arranged on the forming cooling core;
wherein the core assembly defines a plurality of partitions of the engine block;
Wherein the shaped core comprises a first core portion, a second core portion disposed on the first core portion, and a plurality of third core portions;
Wherein the second core portion is a semi-cylindrical element;
Wherein each of the plurality of third core portions has a quasi-triangular shape including a flat tip, and wherein the plurality of third core portions are disposed adjacent to the plurality of partitions of the engine block, wherein the flat tip is proximate to a surrounding area of a cam hole opening of the engine block,
Wherein the plurality of partitions of the engine block include a front partition, a rear partition, and a plurality of intermediate partitions; and
Wherein the plurality of third core portions disposed adjacent to the plurality of partitions of the engine block include: one of the third core portions disposed adjacent to an inner portion of the front bulkhead; one of the third core portions disposed adjacent to an inner side portion of the rear bulkhead; and the third core portion being arranged in a paired set adjacent to the first and second side portions of each of the plurality of intermediate baffles.
2. The mold assembly of claim 1, wherein a first chill portion is arranged as a rectangular prism, and wherein semi-cylindrical elements of the second chill portion are arranged on a surface of the first chill portion.
3. The mold assembly of claim 1, wherein the second core portion arranged as the semi-cylindrical element is adjacent to saddle regions of a plurality of bulkheads of the engine block.
4. The mold assembly of claim 1, wherein each of the plurality of bulkheads of the engine block comprises an end portion; and
Wherein the first cooling core portion is adjacent to the end portions of the plurality of partitions of the engine block.
5. The mold assembly of claim 1,
Wherein each of the plurality of bulkheads of the engine block includes a saddle portion, an end portion, and a side portion; and
Wherein the first cold core portion is arranged as a rectangular prism, wherein the semi-cylindrical elements of the second cold core portion are arranged on a surface of the first cold core portion, and wherein the plurality of third cold core portions are arranged on the semi-cylindrical elements of the second cold core portion.
6. The mold assembly of claim 5, wherein the semi-cylindrical element of the second core portion is disposed adjacent the saddle portion of each of the plurality of bulkheads of the engine block.
7. The mold assembly of claim 5, wherein the plurality of third core portions are disposed adjacent sides of the plurality of partitions of the engine block.
8. The mold assembly of claim 5, wherein the first cold core portion is disposed adjacent an end portion of each of the plurality of bulkheads of the engine block.
9. The mold assembly of claim 1, further comprising a shaped chill disposed on the chill plate.
10. The mold assembly of claim 1, comprising a shaped chill made of a thermally conductive material.
11. The mold assembly of claim 10, wherein the thermally conductive material comprises one of a copper alloy, an aluminum alloy, a steel alloy, or an iron alloy.
12. The mold assembly of claim 1, comprising a first core portion, a second core portion, and a third core portion made of solid material.
13. The mold assembly of claim 1, wherein the first, second, and third core portions comprise internal fluid passages containing a coolant.
14. A shaped chill for a mold assembly configured for casting an apparatus having an inner bulkhead portion, the shaped chill comprising:
A first core portion, a second core portion disposed on the first core portion, and a plurality of third core portions;
Wherein the first cold core portion is a rectangular prism comprising a first surface;
Wherein the second core portion is a semi-cylindrical element disposed on the first surface of the first core portion;
Wherein the plurality of third cold core portions are disposed on the first cold core portion and extend from the semi-cylindrical elements of the second cold core portion;
Wherein each of the plurality of third cold core portions has a quasi-triangular shape including a flat tip, and wherein the plurality of third cold core portions are disposed adjacent to an inner bulkhead portion of the device, wherein the flat tip is proximate to a surrounding area of a cam hole opening of an engine block.
15. The shaped chill of claim 14, further comprising a shaped chill disposed on the chill plate.
16. The shaped chill core of claim 14, wherein the shaped chill core is made of a thermally conductive material comprising one of a copper alloy, an aluminum alloy, a steel alloy, or an iron alloy.
17. The shaped chill core of claim 14, wherein the first, second, and third chill core portions are made of a solid material.
18. The shaped chill core of claim 14, wherein the first, second, and third chill core sections comprise internal fluid passages containing a coolant.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/163718 | 2021-02-01 | ||
| US17/163,718 US20220241847A1 (en) | 2021-02-01 | 2021-02-01 | Profile chill for forming a cast device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114833310A CN114833310A (en) | 2022-08-02 |
| CN114833310B true CN114833310B (en) | 2024-04-30 |
Family
ID=82403017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111524490.1A Active CN114833310B (en) | 2021-02-01 | 2021-12-14 | Shaping cooling core for forming casting device |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20220241847A1 (en) |
| CN (1) | CN114833310B (en) |
| DE (1) | DE102021130357B4 (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5361823A (en) * | 1992-07-27 | 1994-11-08 | Cmi International, Inc. | Casting core and method for cast-in-place attachment of a cylinder liner to a cylinder block |
| US5850814A (en) * | 1998-04-07 | 1998-12-22 | Ford Global Technologies, Inc. | Cylinder bore isolator core for casting engine cylinder blocks |
| US7438117B2 (en) * | 2006-01-19 | 2008-10-21 | Gm Global Technology Operations, Inc. | Cylinder block casting bulkhead window formation |
| CN101547760A (en) * | 2006-11-10 | 2009-09-30 | 内马克迪林根有限公司 | Casting mould for casting a cast part and use of such a casting mould |
| CN104028700A (en) * | 2014-06-03 | 2014-09-10 | 芜湖永达科技有限公司 | Cylinder body water jacket core and preparation method thereof |
| CN106583658A (en) * | 2016-12-14 | 2017-04-26 | 江西腾勒动力有限公司 | Engine cylinder body casting sand core and method for casting cylinder body through casting sand core |
| JP2017131946A (en) * | 2016-01-28 | 2017-08-03 | 株式会社鷹取製作所 | Core, chiller, lamination molding material and mold manufacturing method |
| CN107716875A (en) * | 2011-12-21 | 2018-02-23 | 贝德罗工业有限责任公司 | Improve cold core under the surface that railroad vehicle hook bolt is formed |
| CN108568509A (en) * | 2017-03-09 | 2018-09-25 | 福特全球技术公司 | Internal combustion engine and forming method |
| DE102019112918B3 (en) * | 2019-05-16 | 2020-07-23 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Core for use in the casting of a crankcase |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2255644B2 (en) | 1972-11-14 | 1975-01-09 | Karl Schmidt Gmbh, 7107 Neckarsulm | Method and mold for casting piston blanks |
| US6527039B2 (en) * | 2001-06-11 | 2003-03-04 | General Motors Corporation | Casting of engine blocks |
| US7958633B2 (en) * | 2004-07-21 | 2011-06-14 | International Engine Intellectual Property Company, Llc | Engine block casting and method of manufacture |
| US8079401B2 (en) * | 2009-10-27 | 2011-12-20 | GM Global Technology Operations LLC | Method and apparatus for forming a casting |
| MX367775B (en) * | 2012-11-27 | 2019-09-05 | Cummins Inc | Stabilized engine casting core assembly. |
| US9162280B2 (en) * | 2013-07-23 | 2015-10-20 | Southwest Research Institute | Hybrid ceramic/sand core for casting metal engine parts with passages or holes having a cross section too small for sand casting |
-
2021
- 2021-02-01 US US17/163,718 patent/US20220241847A1/en not_active Abandoned
- 2021-11-19 DE DE102021130357.5A patent/DE102021130357B4/en active Active
- 2021-12-14 CN CN202111524490.1A patent/CN114833310B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5361823A (en) * | 1992-07-27 | 1994-11-08 | Cmi International, Inc. | Casting core and method for cast-in-place attachment of a cylinder liner to a cylinder block |
| US5850814A (en) * | 1998-04-07 | 1998-12-22 | Ford Global Technologies, Inc. | Cylinder bore isolator core for casting engine cylinder blocks |
| US7438117B2 (en) * | 2006-01-19 | 2008-10-21 | Gm Global Technology Operations, Inc. | Cylinder block casting bulkhead window formation |
| CN101547760A (en) * | 2006-11-10 | 2009-09-30 | 内马克迪林根有限公司 | Casting mould for casting a cast part and use of such a casting mould |
| CN107716875A (en) * | 2011-12-21 | 2018-02-23 | 贝德罗工业有限责任公司 | Improve cold core under the surface that railroad vehicle hook bolt is formed |
| CN104028700A (en) * | 2014-06-03 | 2014-09-10 | 芜湖永达科技有限公司 | Cylinder body water jacket core and preparation method thereof |
| JP2017131946A (en) * | 2016-01-28 | 2017-08-03 | 株式会社鷹取製作所 | Core, chiller, lamination molding material and mold manufacturing method |
| CN106583658A (en) * | 2016-12-14 | 2017-04-26 | 江西腾勒动力有限公司 | Engine cylinder body casting sand core and method for casting cylinder body through casting sand core |
| CN108568509A (en) * | 2017-03-09 | 2018-09-25 | 福特全球技术公司 | Internal combustion engine and forming method |
| DE102019112918B3 (en) * | 2019-05-16 | 2020-07-23 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Core for use in the casting of a crankcase |
Non-Patent Citations (1)
| Title |
|---|
| 发动机缸体缸盖铸件水套砂芯的冷芯与热芯工艺比较;康宽滋;;现代铸铁;20110525(S1);42-49 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20220241847A1 (en) | 2022-08-04 |
| DE102021130357B4 (en) | 2024-04-25 |
| CN114833310A (en) | 2022-08-02 |
| DE102021130357A1 (en) | 2022-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9981310B2 (en) | Degassing and microstructure refinement of shape casting aluminum alloys | |
| US7438117B2 (en) | Cylinder block casting bulkhead window formation | |
| US8533946B2 (en) | Method of manufacturing a crankshaft | |
| US10690087B2 (en) | Aluminum cylinder block and method of manufacture | |
| JP4395002B2 (en) | Cylinder block cooling structure | |
| US9889501B2 (en) | Method for producing a turbocharger housing | |
| JP2007127066A (en) | Cooling structure and water passage forming member for internal combustion engine | |
| US8256114B2 (en) | Method of manufacturing a cooling jacket of a cylinder head | |
| CN114833310B (en) | Shaping cooling core for forming casting device | |
| US4686943A (en) | Closed-deck cylinder block for water-cooled internal combustion engines | |
| US4394850A (en) | Cylinder block for automotive internal combustion engine | |
| US7694661B2 (en) | Crankcase, method of casting a crankcase, and a multiple-cylinder four-cycle engine comprising the crankcase | |
| EP1865183A2 (en) | Method of manufacturing a cylinder block | |
| US10898948B2 (en) | Method of manufacturing metal castings | |
| US7629057B2 (en) | Iron species preform | |
| BR0314859A (en) | Mold core arrangement for fabrication of a cylinder engine block with separate water-cooled region | |
| US20060130798A1 (en) | Crankshaft bearing for an internal combustion engine | |
| CN114833311B (en) | Hybrid cam Kong Shaxin with metal chill for cast aluminum cylinders | |
| JP2009068432A (en) | Cylinder head, internal combustion engine provided with same, method for manufacturing cylinder head, and core for water jacket | |
| US20140367064A1 (en) | Method of simultaneously manufacturing a plurality of crankshafts | |
| JPH0146703B2 (en) | ||
| JPH0128289Y2 (en) | ||
| JP4636074B2 (en) | Manufacturing method of cam housing | |
| JPS61135959A (en) | Cylinder block for water-colled type internal combustion engine | |
| JPS61135957A (en) | Cylinder block for water-cooled type internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |