CN101066553A - Casting method and mold design for optimization of material properties of a casting - Google Patents
Casting method and mold design for optimization of material properties of a casting Download PDFInfo
- Publication number
- CN101066553A CN101066553A CNA2007101023710A CN200710102371A CN101066553A CN 101066553 A CN101066553 A CN 101066553A CN A2007101023710 A CNA2007101023710 A CN A2007101023710A CN 200710102371 A CN200710102371 A CN 200710102371A CN 101066553 A CN101066553 A CN 101066553A
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- 238000005266 casting Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 title abstract description 32
- 238000005457 optimization Methods 0.000 title abstract description 8
- 238000013461 design Methods 0.000 title abstract description 6
- 239000012768 molten material Substances 0.000 claims description 55
- 238000007528 sand casting Methods 0.000 claims description 6
- 238000005495 investment casting Methods 0.000 claims description 5
- 238000010120 permanent mold casting Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 abstract description 18
- 230000000630 rising effect Effects 0.000 description 25
- 239000011324 bead Substances 0.000 description 14
- 239000011148 porous material Substances 0.000 description 10
- 230000006399 behavior Effects 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000007790 solid phase Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 230000036632 reaction speed Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 210000001787 dendrite Anatomy 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 235000019628 coolness Nutrition 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
-
- 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
- B22C9/04—Use of lost patterns
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Continuous Casting (AREA)
Abstract
A casting method and mold design for optimization of material properties of a casting is disclosed, wherein the optimization is accomplished through control of a cooling rate of the casting to provide desired material properties throughout the casting.
Description
Technical field
The present invention relates to casting, more specifically, relate to the casting method and the mould design that make the casting material characteristic optimization, wherein the cooldown rate by the control foundry goods reaches optimization.
Background technology
In casting process, the variation of material behavior can appear in the zones of different in foundry goods.In a variety of causes, when the zones of different that allows foundry goods with different speed coolings, thereby when solidifying, can occur changing.Because the cooling velocity in each zone of foundry goods depends on its geometry, so have the influence that the foundry goods of complex geometric shapes especially is subject to these variations.For example, in local surfaces was amassed with respect to the high zone of the ratio of volume, this zone was cooled off than very fast.In local surfaces was amassed with respect to the low zone of the ratio of volume, this zone was cooled off slowly.This causes the material behavior among the foundry goods remarkable to another regional change from a zone.
This variation in the casting material characteristic usually is undesirable.This variation can cause the problem of machinability or other processing aspect.Also can cause the problem of properties of product aspect.
Need development to make the casting method and the mould design of casting material characteristic optimization.
Summary of the invention
Harmonious with the present invention, a kind of casting method and mould design that is used to make the casting material characteristic optimization disclosed.
In one embodiment, Casting Equipment comprises: first mold is used to form first die cavity that receives molten material therein; And second mold, be positioned at described first mold at least a portion near, described second mold is formed for receiving therein second die cavity of molten material, and wherein the molten material in described second die cavity is controlled at the cooldown rate of the molten material in this part of described first die cavity.
In another embodiment, the mould that is used to cast comprises: mould, have first die cavity and second die cavity that are formed on wherein and are suitable for receiving molten material, and described second die cavity forms that the part with described first die cavity is adjacent at least; The molten material that receives in wherein said second die cavity is controlled the cooldown rate of the molten material that receives in this adjacent with described second die cavity in described first die cavity part.
The present invention also provides a kind of method of controlling molten material cooldown rate in the casting process, comprises the following steps: to provide first mold, is used to form first die cavity that receives molten material; Second mold is provided, is used to form second die cavity that receives molten material; Described second mold is become adjacent with at least a portion of described first mold surely; Molten material is injected described first die cavity and described second die cavity, and the molten material in wherein said second die cavity is controlled at the cooldown rate of the molten material in this part of described first die cavity.
Equipment of the present invention and method are useful in the casting process.This equipment and method are particularly useful in the casting of engine pack, for example engine block, cylinder head and complicated transmission assembly.
Description of drawings
In conjunction with the accompanying drawings, from following detailed description of the preferred embodiment, those of ordinary skill in the art can easily understand above-mentioned and other advantage of the present invention, wherein:
Fig. 1 is the plan view from above of known Casting Equipment in this area;
Fig. 2 is for what get along three some places of the bent axle of the existing Casting Equipment manufacturing of using Fig. 1, and temperature is with respect to the curve map of the data of time;
The plan view from above of the bent axle that Fig. 3 makes for the existing Casting Equipment of using Fig. 1, and show along the Brinell hardness of crankshaft length and change;
Fig. 4 is the plan view from above according to the Casting Equipment of the embodiment of the invention;
Fig. 5 is the perspective view of the Casting Equipment of Fig. 4;
Fig. 6 is for what get along three some places of the bent axle of the Casting Equipment manufacturing of using Fig. 4, and temperature is with respect to the curve map of time;
The plan view from above of the bent axle that Fig. 7 makes for the Casting Equipment of using Fig. 4, and show along the Brinell hardness of crankshaft length and change; And
Fig. 8 illustrates the block diagram of method according to an embodiment of the invention.
The specific embodiment
Various exemplary embodiments of the present invention is described and shown to following detailed description and accompanying drawing.Specification and accompanying drawing are used for enabling those skilled in the art to making and using the present invention, but are not to limit the scope of the invention by any way.Aspect disclosed method, shown step is actually schematically, and therefore, the order of these steps is optional or harsh.
Fig. 1 shows the Casting Equipment 10 according to prior art.Casting Equipment 10 is for being used as the casting pattern of mould (not shown), for example investment casting, sand casting process, permanent mold casting method and die-cast method in known casting method.Casting Equipment 10 comprises a pair of mold (mold pattern) 12, cast gate 14 and rising head 16.
Mold 12 comprises flange 18, main part 12 and bar 22.Mold 12 has the shape that is substantially similar to required cast object.Fig. 1 shows the mold 12 with the shape that is substantially similar to bent axle shown in Fig. 3 24.Should be appreciated that mold 12 can have the shape of any required cast object, for example engine block, cylinder head, complicated transmission assembly or the like.
Cast gate 14 forms the pipeline (not shown) in mould, this pipeline comprises inlet 26, is communicated with to provide with the fluid of mold 12 and rising head 16.Fig. 1 shows and is positioned near the cast gate 14 in Casting Equipment 10 bottoms.Should be appreciated that as required cast gate 14 can be arbitrary dimension or shape, and cast gate 14 can be positioned at other zone of Casting Equipment 10.
Rising head 16 is suitable for forming the container (not shown), and this container prevents because the molten material (not shown) forms cavity or pore in required cast object in the contraction of its cooling period.Fig. 1 shows a pair of rising head 16, and wherein each rising head 16 is communicated with each mold 12.As long as should be appreciated that the molten material that can provide an amount of in rising head 16 to prevent forming cavity or pore in cast object, just can use the rising head of arbitrary shape, size, position and quantity.It is also understood that molten material can be as required be metal or nonmetal arbitrarily.
In use, Casting Equipment 10 is full of molten material by the pipeline that the inlet 26 by cast gate 14 forms, and wherein Casting Equipment 10 comprises the cavity that is formed by mold 12.For example, in sand casting, in sand mo(u)ld, form cavity and pipeline.Molten material flows through Casting Equipment 10, is full of mold 12 and rising head 16.
In case the die cavity that forms by model 12 is full of, just allow the molten material cooling.Because the density when material is liquid is lower than the density when solid-state, so when required cast object was cooled off, its volume that occupies can reduce.Therefore, might form cavity or pore, usually the most last point of curing.Rising head 16 prevents to form cavity or pore by extra molten material is provided to mold 12 in required cast object.Therefore, when molten material solidified and shrink, the cavity of all formation or pore all were formed in the rising head 16 like this, rather than in required cast object.In case required cast object has cured and fully cooling, just opens mould or removes mould from cast object.Come the hardened material of the cavity of free cast gate 14 and rising head 16 formation to be connected to required cast object.Use methods known in the art from the hardened material of required cast object removal, then it is abandoned or re-uses from cast gate 14 and rising head 16.
Fig. 2 shows the foundry goods of making for from the Casting Equipment of Fig. 1, and temperature is with respect to the curve 27 of time.Curve 27 comprises temperature axis 28 (Y-axis), time shaft 30 (X-axis), bead wire 32, main part separated time 34, bar line 36, knockout (shakeout) line 32 and eutectoid line 40.
Bead wire 22, main part separated time 34 and bar line 36 are represented the temperature measured by the thermocouple (not shown) that is positioned at flange 18, main part 20 and bar 22 curve with respect to the time respectively.Thermocouple is in the temperature of solidifying, measure during cooling and the knockout molten material.
The hardness that Fig. 3 shows the bent axle 24 that uses Casting Equipment 10 formation as known in the art distributes.The inhomogeneous hardness of using Brinell scale that bent axle 24 is shown distributes.By the scale that penetrates of penetrator, the identation hardness of Brinell scale exosyndrome material.The steel ball that 10mm is used in typical test is as penetrator, and the size of power is 3000kgf (29kN).For softer material, use smaller power; For harder material, substitute steel ball with tungsten-carbide ball.Use following formula to calculate hardness: ball hardness number
, wherein P is the power that applies, and D is the diameter of penetrator, and d is the diameter of impression.Should be appreciated that and exist multiple other hardness test to can be used to determine that the hardness of required cast object distributes.
Bent axle 24 comprises bar part 42, following main part 44, goes up main part 46 and flange portion 48.The BHN of bar part 42 and following main part 44 is between 141.0 and 220.03.The BHN of last main part 46 and flange portion 48 is between 273.0 and 326.0.The difference of hardness of being represented by BHN is the cooldown rate of bar part 42 and following main part 44 and the different result of cooldown rate of last main part 46 and flange portion 48.As mentioned above, required cast object causes different eutectoid reaction speed from a zone to another regional cooldown rate difference.Different eutectoid reaction speed causes required cast object to have different material behaviors from an one zone to another zone.
Fig. 4 and Fig. 5 show the Casting Equipment according to the embodiment of the invention.Casting Equipment 60 is for being used for the casting pattern of mould (not shown), and it can be used in any known casting method, for example investment casting, sand casting process, permanent mold casting method and die-cast method.Casting Equipment 60 comprises a pair of first mold 62, second mold 64, cast gate 66 and rising head 68.Should be appreciated that and to use more or less mold 62,64 as required.
In the embodiment shown, second mold 64 comprises inwall 78 and outer wall 80.Second mold 64 is suitable for forming the die cavity (not shown), and it is communicated with pipeline (not shown) fluid as a die cavity part that is formed by cast gate 66 and rising head 68.The inwall 78 of second mold 64 and outer wall 80 are configured to around the two-dimensional shapes of the profile of the bar 74 of first mold 62.Term used herein " center on " inwall 78 that means second mold 64 and outer wall 80 at least in part around and near first mold 62, but and be not in actual contact first mold 62.The inwall 78 that should be appreciated that second mold 64 can be required shape or structure arbitrarily, the shape of the specific part of first mold 62 for example, perhaps geometry arbitrarily.It is also understood that inwall can center on the specific part of first mold 62 three-dimensionally.Outer wall 80 can be arbitrary shape or structure as required.Second mold 62 also can have the shape that is substantially similar to another required cast object.It is also understood that second mold 64 can be as required apart from first mold, 62 any distance.The precision architecture of second mold 64 and position depend on size, shape and the surface area of first mold 62, and the required cooldown rate or the like that is full of the molten material of the die cavity that is formed by first mold 62.As shown in the figure, second mold 64 be positioned at first mold 62 bar 74 near.Should be appreciated that second mold 64 can be positioned at as required first mold, 62 arbitrary portions near, for example flange 70, main part 72, perhaps be positioned at first mold, 62 each several parts any combination near.
Rising head 68 is suitable for forming the container (not shown), and this container prevents because the molten material (not shown) forms cavity or pore in required cast object in the contraction of its cooling period.Fig. 4 and Fig. 5 show a pair of rising head 68, and wherein each rising head 68 is communicated with each first mold 62.As long as should be appreciated that the molten material that can provide an amount of in rising head 68 to prevent forming cavity or pore in cast object, just can use the rising head 68 of arbitrary shape, size, position and quantity.It is also understood that molten material can be as required be metal or nonmetal arbitrarily.
In use, Casting Equipment 60 is full of molten material by the pipeline that the inlet 82 by cast gate 66 forms, and wherein Casting Equipment 66 comprises the die cavity that is formed by first mold 62 and second mold 64.Molten material flows through Casting Equipment 60, is full of the die cavity that is formed by first mold 62, second mold 64 and rising head 68.
In case be full of die cavity, just allow Casting Equipment 60 and required cast object cooling.Because the density when material is liquid is lower than the density when solid-state, so when required cast object was cooled off, its volume that occupies can reduce.Therefore, might form cavity or pore, usually the most last point of curing.Rising head 68 prevents to form cavity or pore by extra molten material is provided to the die cavity that is formed by first mold 62 in required cast object.Therefore, when molten material solidified and shrink, all cavitys or the pore of formation all were formed in the rising head 68, rather than in required cast object.By the heat of molten material radiation from the die cavity that forms by second mold 64, be controlled near the cooldown rate of the part of the cast object the die cavity that forms by second mold 64.If the other parts of the cast object part cooling raio casting normally target that forms are fast, reduced the cooldown rate of the cast object that forms in the cavity of first mold, 62 formation so by radiations heat energy in the die cavity that first mold 62 adjacent with the die cavity of second mold, 64 formation forms.Should be appreciated that the cooldown rate that to use a plurality of molds to control first mold 62, and do not break away from the scope of the invention.
In case required cast object has cured and fully cooling, just opens mould and takes out required cast object.Come free cast gate 66, rising head 68 and the die cavity of second mold, 64 formation or the hardened material of pipeline to be connected to required cast object.Use methods known in the art to remove hardened material, then it is abandoned or re-uses from required cast object.
Fig. 6 shows the foundry goods of making for Casting Equipment 60, and temperature is with respect to the curve 83 of time.Curve 83 comprises temperature axis 84 (y axle), time shaft 86 (x axle), bead wire 88, main part separated time 90, bar line 92, knockout line 94 and eutectoid line 96.
The hardness that Fig. 7 shows the bent axle 76 that uses Casting Equipment 60 formation distributes.The inhomogeneous hardness of using Brinell scale that bent axle 76 is shown distributes.Should be appreciated that the hardness that also can use many other hardness tests to determine required cast object distributes.
Shown in bent axle 76 comprise bar part 98, down main part 100, go up main part 102 and flange portion 104.In the embodiment shown, bar part 98, time main part 100, last main part 102 and flange portion 102 all have the BHN between 273.0 and 326.0.These data only are the purposes that illustrates that is used to illustrate consistent material behavior, rather than limit the scope of the invention.Because bar part 98, down main part 100, go up main part 102 and flange portion 102 with substantially the same speed cooling, so hardness is consistent basically.As mentioned above, the substantially similar similar time that causes eutectoid reaction of required cast object from a zone to another regional cooldown rate.The similar speed of eutectoid reaction has from a zone of required casting target to the similar basically material behavior in another zone required cast object.
Fig. 8 shows the method 110 of controlling molten material cooldown rate in first die cavity according to the embodiment of the invention with curve.But any known casting method is using method 110 all, for example investment casting, sand casting process, permanent mold casting method and die-cast method.
In first step 112, form first die cavity that is suitable for receiving molten material.Required according to the required cast object that will make, first die cavity can be size or shape arbitrarily.First die cavity can be the size or the shape of bent axle, engine block, cylinder head, complicated transmission assembly etc.
In second step 114, form second die cavity that is suitable for receiving molten material.Second die cavity can be configured to the two-dimentional profile around first a die cavity part.Should be appreciated that second die cavity can be required shape arbitrarily or structure, the shape of the specific part of first die cavity for example, perhaps geometry arbitrarily.It is also understood that second die cavity can center on the specific part in the first film chamber three-dimensionally.Second die cavity can be as required be shape or structure arbitrarily.Second die cavity also can have the shape that is substantially similar to another required cast object.It is also understood that second die cavity can be as required apart from the first die cavity any distance.The precision architecture of second die cavity and position depend on size, shape and the surface area of first die cavity, and the required cooldown rate of molten material in first die cavity.
In third step 116, with second die cavity be positioned at first a die cavity part near.Should be appreciated that second die cavity can be positioned at first die cavity, one side, both sides near, perhaps fully around this part of first die cavity.
In the 4th step 118, molten material is injected first die cavity and second die cavity, wherein control the cooldown rate of molten material in this part of first die cavity from the heat of the second die cavity radiation.Can control in first die cavity cooldown rate of the part adjacent in the molten material with second die cavity, make this part adjacent to second die cavity with to first die cavity in the similar basically speed of the remainder of molten material cool off.Selectively, can control the cooldown rate of this adjacent in the interior molten material of first die cavity part, make this part adjacent with the speed cooling slower than the remainder of molten material in first die cavity with second die cavity with second die cavity.
Description from the front, those skilled in the art can easily determine inner characteristic of the present invention, and under the situation that does not break away from the spirit and scope of the invention, those skilled in the art can make variations and modifications to the present invention, to be suitable for various application and situation.
Claims (20)
1. a Casting Equipment (60) comprising:
First mold (62) is used to form first die cavity that receives molten material therein; And
Second mold (64), be positioned at described first mold (62) at least a portion near, described second mold (64) is formed for receiving therein second die cavity of molten material, and wherein the molten material in described second die cavity is controlled at the cooldown rate of the molten material in this part of described first die cavity.
2. equipment as claimed in claim 1, wherein said first mold (62) and described second mold (64) are for being used for the model of sand casting process.
3. equipment as claimed in claim 1 (60), wherein said first mold (62) and described second mold (64) are for being used for the model of die-cast method.
4. equipment as claimed in claim 1 (60), wherein said first mold (62) and described second mold (64) are for being used for the model of investment casting.
5. equipment as claimed in claim 1 (60), wherein said first mold (62) and described second mold (64) are for being used for the model of permanent mold casting method.
6. equipment as claimed in claim 1 (60), wherein said second mold (64) side with described first mold (62) at least are adjacent.
7. equipment as claimed in claim 1 (60), wherein said second mold (64) is adjacent with the both sides of described first mold (62).
8. equipment as claimed in claim 1 (60), wherein said second mold (64) is adjacent with three sides of described first mold (62).
9. equipment as claimed in claim 1 (60), wherein said second mold (64) are at least around the part of described first mold (62).
10. a mould that is used to cast (60) comprising:
Mould (62,64) has first die cavity and second die cavity that are formed on wherein and are suitable for receiving molten material, and described second die cavity forms that the part with described first die cavity is adjacent at least;
The molten material that receives in wherein said second die cavity is controlled the cooldown rate of the molten material that receives in this adjacent with described second die cavity in described first die cavity part.
11. mould as claimed in claim 10 (60), wherein said mould (62,64) is the sand casting mould.
12. mould as claimed in claim 10 (60), wherein said mould (62,64) is the die-cast mould.
13. mould as claimed in claim 10 (60), wherein said mould (62,64) is an investment casting mold.
14. mould as claimed in claim 10 (60), wherein said mould (62,64) is the permanent mold casting mould.
15. mould as claimed in claim 10 (60), a side of wherein said second die cavity and described first die cavity is adjacent.
16. mould as claimed in claim 10 (60), the both sides of wherein said second die cavity and described first die cavity are adjacent.
17. mould as claimed in claim 10 (60), three sides of wherein said second die cavity and described first die cavity are adjacent.
18. mould as claimed in claim 10 (60), wherein said second die cavity are at least around the part of described first die cavity.
19. a method (110) of controlling molten material cooldown rate in the casting process comprises the following steps:
First mold (62) is provided, is used to form first die cavity (112) that receives molten material;
Second mold (64) is provided, is used to form second die cavity (114) that receives molten material;
Described second mold (64) is positioned at least a portion adjacent (116) with described first mold (62); With
Molten material is injected described first die cavity and described second die cavity, and the molten material in wherein said second die cavity is controlled at the cooldown rate (118) of the molten material in this part of described first die cavity.
20. it is adjacent with at least one side of described first mold (62) that method as claimed in claim 19 (110), wherein said second mold (64) are orientated as.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/414,806 US20070251664A1 (en) | 2006-05-01 | 2006-05-01 | Casting method and mold design for optimization of material properties of a casting |
| US11/414806 | 2006-05-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101066553A true CN101066553A (en) | 2007-11-07 |
Family
ID=38362766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101023710A Pending CN101066553A (en) | 2006-05-01 | 2007-04-30 | Casting method and mold design for optimization of material properties of a casting |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20070251664A1 (en) |
| EP (1) | EP1852198A3 (en) |
| CN (1) | CN101066553A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013008396B4 (en) * | 2013-05-17 | 2015-04-02 | G. Rau Gmbh & Co. Kg | Method and device for remelting and / or remelting of metallic materials, in particular nitinol |
| DE102013223179A1 (en) * | 2013-11-14 | 2015-05-21 | Bayerische Motoren Werke Aktiengesellschaft | Complex cast component and casting process for this |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1678655A (en) * | 1924-11-30 | 1928-07-31 | Heinrich Lanz Ag | Production of iron castings |
| FR2217096B1 (en) * | 1973-02-13 | 1975-03-07 | Peugeot & Renault | |
| CH577864A5 (en) * | 1974-05-29 | 1976-07-30 | Sulzer Ag | |
| FR2664187B1 (en) * | 1990-07-04 | 1992-09-18 | Snecma | FOUNDRY MOLD FOR THE MANUFACTURE OF PARTS BY SINGLE CRYSTAL SOLIDIFICATION. |
| US5275227A (en) * | 1990-09-21 | 1994-01-04 | Sulzer Brothers Limited | Casting process for the production of castings by directional or monocrystalline solidification |
| DE59207743D1 (en) * | 1991-03-26 | 1997-02-06 | Sulzer Innotec Ag | Device for the production of directionally solidified castings |
| DE4212410C2 (en) * | 1992-04-13 | 1996-08-08 | Sulzer Mtu Casting Technology | Casting unit for the production of a plurality of castings |
| JP2003053516A (en) * | 2001-08-08 | 2003-02-26 | Suzuki Motor Corp | Method for controlling structure in spheroidal graphite cast iron and mold used for this control method |
| EP1721687A1 (en) * | 2005-05-13 | 2006-11-15 | C.R.F. Società Consortile per Azioni | Method for casting a metal piece with the lost foam technique |
-
2006
- 2006-05-01 US US11/414,806 patent/US20070251664A1/en not_active Abandoned
-
2007
- 2007-04-04 EP EP07007080A patent/EP1852198A3/en not_active Withdrawn
- 2007-04-30 CN CNA2007101023710A patent/CN101066553A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP1852198A3 (en) | 2008-10-22 |
| EP1852198A2 (en) | 2007-11-07 |
| US20070251664A1 (en) | 2007-11-01 |
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