EP1934002A1 - Core and a method for the production thereof - Google Patents
Core and a method for the production thereofInfo
- Publication number
- EP1934002A1 EP1934002A1 EP06793909A EP06793909A EP1934002A1 EP 1934002 A1 EP1934002 A1 EP 1934002A1 EP 06793909 A EP06793909 A EP 06793909A EP 06793909 A EP06793909 A EP 06793909A EP 1934002 A1 EP1934002 A1 EP 1934002A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cores
- water
- core material
- soluble
- bar
- 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
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 239000011162 core material Substances 0.000 claims abstract description 154
- 239000000203 mixture Substances 0.000 claims abstract description 26
- 150000003839 salts Chemical class 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 239000004033 plastic Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract 3
- 239000012778 molding material Substances 0.000 claims description 33
- 235000019353 potassium silicate Nutrition 0.000 claims description 29
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 27
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 24
- 238000009826 distribution Methods 0.000 claims description 24
- 239000011230 binding agent Substances 0.000 claims description 23
- 239000000654 additive Substances 0.000 claims description 22
- 239000002245 particle Substances 0.000 claims description 21
- 239000000126 substance Substances 0.000 claims description 17
- 239000000945 filler Substances 0.000 claims description 14
- 239000011780 sodium chloride Substances 0.000 claims description 12
- 238000013001 point bending Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 238000009736 wetting Methods 0.000 claims description 9
- 239000003513 alkali Substances 0.000 claims description 8
- 239000003054 catalyst Substances 0.000 claims description 8
- 238000010304 firing Methods 0.000 claims description 8
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 8
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 8
- 235000011151 potassium sulphates Nutrition 0.000 claims description 8
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 6
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 5
- 150000004760 silicates Chemical class 0.000 claims description 4
- 239000004254 Ammonium phosphate Substances 0.000 claims description 3
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims description 3
- ZRIUUUJAJJNDSS-UHFFFAOYSA-N ammonium phosphates Chemical class [NH4+].[NH4+].[NH4+].[O-]P([O-])([O-])=O ZRIUUUJAJJNDSS-UHFFFAOYSA-N 0.000 claims description 3
- 235000019289 ammonium phosphates Nutrition 0.000 claims description 3
- 150000003863 ammonium salts Chemical class 0.000 claims description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 3
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 3
- 150000003841 chloride salts Chemical class 0.000 claims description 3
- 238000003958 fumigation Methods 0.000 claims description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 3
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 3
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 3
- 150000002823 nitrates Chemical class 0.000 claims description 3
- 239000001103 potassium chloride Substances 0.000 claims description 3
- 235000011164 potassium chloride Nutrition 0.000 claims description 3
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 3
- 238000000354 decomposition reaction Methods 0.000 claims description 2
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims 2
- 235000021317 phosphate Nutrition 0.000 claims 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims 2
- 239000007789 gas Substances 0.000 claims 1
- 239000003232 water-soluble binding agent Substances 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 8
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005058 metal casting Methods 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- 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
- B22C9/105—Salt cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/18—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
- B22C9/123—Gas-hardening
Definitions
- the present invention relates to cores and to a process for the production of cores for use as cavity placeholders in the production of metallic and non-metallic moldings from water-completely soluble and therefore residue-free removable from the moldings materials by core shooting.
- the cores must remain dimensionally stable when the material is introduced into the mold, during casting or injection, and after solidification of the material, they can easily be removed from the intended cavity.
- cores are required in large numbers, for example, in series production in foundries, it is necessary to be able to produce the cores in constant quality as quickly as possible in the shortest possible time. If special demands are placed on the surface and contour accuracy of the cavities of the workpieces, the surface of the cores must be particularly smooth and contour-accurate and the cores must be able to be removed completely free of residue from the cavities of the workpieces. Residues of conventional cores containing non-dissolvable components, such as quartz sand, can result in damage to surfaces to be refined or cause the failure of an aggregate, for example, if sand residues in the pump housing of an injection pump lead to plugging of an injection nozzle.
- non-dissolvable components such as quartz sand
- the cores according to the invention consist of a molding material and optionally substances which influence the properties and quality of the cores, such as fillers, binders, additives and catalysts. All of these substances, as well as the substances that result from possible reactions, form the core material.
- This core material is completely soluble in water and can thus be removed without residue from the cavities of the workpieces after shaping.
- the nuclei do not disintegrate into insoluble constituents after dissolution of the binder, but all substances dissolve completely. All compositions of the core materials can be processed by core shooting as a molding process.
- the cores of the invention have the advantage that they are composed of substances that do not pollute the environment when handled properly, neither in their preparation, nor during the casting process. When they are removed from the workpieces, there are no residues that require special disposal.
- the substances can be recovered by suitable processes from the liquid phase, for example the salt by spray drying or evaporation.
- the cores according to the invention can be produced using conventional core shooters.
- the complexity of the geometry of the cores determines the core shooting parameters as well as the design and design of the tool for making the cores and shooting head of the core shooter.
- the core shooting allows due to the transport of the claimed core materials by the compression means, the compressed gas, the production of very complicated cores built with great contour accuracy at the Surface and homogeneous structure with uniform density and strength.
- Suitable molding materials are the chlorides of alkali and alkaline earth elements such as in particular sodium chloride, potassium chloride and magnesium chloride, the water-soluble sulfates and nitrates of alkali and alkaline earth elements such as in particular potassium sulfate, magnesium sulfate, and water-soluble ammonium salts such as ammonium sulfate in particular.
- These substances can be used individually or as a mixture, as far as they do not react with each other and thus adversely affect the desired properties, because the molding material should undergo no material conversion in the core production, which adversely affects its solubility.
- all easily soluble salts are suitable whose decomposition or melting point is above the temperature of the liquid metal, the melt, or the injected plastic.
- the molding materials comparable to sand, easy and easy to divide into the desired grain sizes or grain classes.
- the chosen particle size distribution influences in particular the surface properties of the cores. The smaller the grain size, the smoother the surface.
- the highest possible degree of spatial filling is sought, which can be achieved by mixing different salts and optionally the additional substances with different distribution curves, for example by a bi- or trimodal grain distribution of the mixture.
- grain sizes in the range of 0.01 mm to 2 mm are selected, preferably as Gaussian distribution, depending on the material, desired surface quality and contour accuracy of the workpiece to be cast or molded from plastic.
- Water-soluble fillers can replace part of the molding material so far, up to 30% by weight, so as not to adversely affect density and strength.
- the grain size of the filler is suitably adjusted to the particle size or the particle size distribution of the molding material.
- binder is added to the molding material before the core shooting. All binders are possible which, after the curing process, are completely water-soluble, which thoroughly wet the molding material and optionally the fillers and wherein the mixture of these materials can be shaped into cores by means of core shooting. Silicate binders are generally suitable if they are water-soluble. It is also possible to use the water-soluble alkali metal and ammonium phosphates or monoaluminum phosphate binders. Binders of soluble water glass are preferred. The amount added depends on the water glass module, 1 to 5, and is, depending on the wetting behavior, between 0.5 wt .-% and 15 wt .-%.
- the properties of a mixture of molding material, optionally filler and binder can be influenced by the targeted addition of additives. It is also a prerequisite here that these additives or the reaction products of these additives can also be completely and without residue removed from the cavity of a workpiece by dissolution in water.
- these additives may be: wetting agents, additives which influence the consistency of the mixture, lubricants, deagglomerating additives, gelling agents, additives which alter the thermophysical properties of the core, for example the thermal conductivity, additives which adhere the metal / plastic to the Cores prevent additions that lead to better homogenization and miscibility, additives that increase shelf life, additives that prevent premature curing, additives that prevent the formation of moisture and condensation during casting and additives that accelerate the curing process.
- these additives are known to those skilled in the art of making conventional cores. Their added quantity depends on the type and composition of the molding material.
- the composition of the core material it may be necessary to use matched catalysts to initiate and accelerate the hardening process so that the cores have the required strength after core shooting.
- the gas influencing the core material in particular for hardening and drying the cores, can be blown into the still closed form after firing.
- the pressure may be lower than when shooting the cores and be up to about 5 bar.
- thermal aftertreatment of the cores at temperatures that can be up to 500 0 C.
- thermal Treatment already during shaping in the mold by heating it to a temperature matched to the core material.
- the core material is composed of the molding material and the binder and the additives such as fillers, additives and catalysts, if necessary. All substances can be homogeneously mixed with known mixing units.
- the amount of binder and additive additives to be added depends on the purpose of the cores and determines the surface quality as well as the density and strength of the cores.
- the processing of the core materials can be carried out separately from the core shooting process, where appropriate, suitable protective measures must be provided to prevent agglomeration and premature curing.
- suitable protective measures For example, depending on the composition of the core material, treatment, transport and storage can also take place under protective gas.
- Substances which alter the properties of the other materials of the core material are advantageously fed directly into the core shooter.
- the mixing then takes place in the gas stream, which transports the other substances into the mold.
- the core material is injected into the mold at pressures between 1 bar and 10 bar, matched to the composition of the core material or to the filling and flowability of the mass.
- the filling pressure is dependent on the particle size distribution or the grain size and grain shape. Fine-grained salts generally require higher shooting pressures.
- the surface quality of the cores according to the invention can be adjusted so that no size must be used. If, nevertheless, a surface treatment with a size is intended, the size should also be completely water-soluble.
- the sizing may be applied in the usual manner by dipping, spraying, brushing or brushing.
- NaCI cores are particularly suitable for light metal casting, for example for cast aluminum alloys, in which the cores are exposed to temperatures below 800 ° C.
- NaCl is used in the particle size range of 0.063 mm to 2 mm, preferably in the Gaussian distribution, where the distribution can be multimodal.
- Particularly suitable as the binder is water glass, the amount added being determined by the waterglass modulus, 1 to 5, and being between 0.5 and 15% by weight. Other water-soluble silicate compounds are also preferably used.
- the temperature of the mold is tuned to the composition of the core materials in a temperature range from room temperature to 500 ° C.
- the hardening of the cores can be done by gassing, for example with CO 2 , and / or by the action of temperature.
- the cores have a density of 0.9 g / cm 3 to 1.8 g / cm 3 , a 3-point bending strength of 100 N / cm 2 to 750 N / cm after core shooting, depending on their composition and a possible heat treatment 2 and a surface quality Ra, depending on the grain size, between 5 microns and 200 microns.
- the cores are storable. After casting the workpieces, the cores are removed from the cavities by complete dissolution in water residue.
- Cores of NaCl having a mean particle size D50 of 0.7 mm with 5% by weight of water glass of module 4 were produced. NaCl and water glass were homogeneously mixed in a conventional mixer and filled into a core shooter. The core material was compressed with air at a pressure of 4 bar shot in the form. The mold was at room temperature. After firing, fumigation was carried out to cure with CO 2 .
- K 2 SO 4 cores are particularly suitable for copper-based materials, brass and bronze, where the cores are exposed to higher temperatures than aluminum casting.
- K 2 SO 4 can also be used in the particle size range of 0.063 mm to 2 mm, preferably in the Gaussian distribution and optionally multimodal.
- Waterglass is also particularly suitable as a binder, the amount added being determined by the waterglass modulus, 1 to 5, and being between 1 and 10% by weight.
- Other water-soluble silicate compounds are also preferably used.
- the temperature of the mold is tuned to the composition of the core materials in a temperature range from room temperature to 500 ° C.
- the hardening of the cores can be done by gassing and / or by the action of temperature.
- the cores have a density of 0.8 g / cm 3 to 1.6 g / cm 3 , a 3-point bending strength of 80 N / cm 2 to 600 N / cm after core shooting, depending on their composition and any heat treatment 2 and a surface quality Ra, depending on the grain size, between 10 microns and 250 microns.
- the cores are storable. After casting the workpieces, the cores are removed from the cavities by complete dissolution in water residue.
- Cores of K 2 SO 4 with a particle size D 50 of 0.85 mm with 8% by weight of water glass of modulus 2.5 were produced.
- K 2 SO 4 and water glass were in one homogeneously mixed and filled into a core shooter.
- the core material was shot with air at a pressure of 4 bar into the mold.
- the mold had a temperature of 180 ° C. After firing, gassing was carried out with CO 2 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Mold Materials And Core Materials (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005047416 | 2005-09-30 | ||
DE102006018481 | 2006-04-19 | ||
PCT/EP2006/066882 WO2007036563A1 (en) | 2005-09-30 | 2006-09-29 | Core and a method for the production thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1934002A1 true EP1934002A1 (en) | 2008-06-25 |
EP1934002B1 EP1934002B1 (en) | 2019-07-31 |
Family
ID=37487718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06793909.0A Active EP1934002B1 (en) | 2005-09-30 | 2006-09-29 | Core and a method for the production thereof |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090250587A1 (en) |
EP (1) | EP1934002B1 (en) |
JP (2) | JP4950998B2 (en) |
KR (2) | KR101492786B1 (en) |
BR (1) | BRPI0616623B1 (en) |
WO (1) | WO2007036563A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2190933B1 (en) * | 2007-07-13 | 2019-09-18 | Advanced Ceramics Manufacturing, LLC | Aggregate-based mandrels for composite part production and composite part production methods |
CN102159342A (en) * | 2008-07-18 | 2011-08-17 | 陶瓷技术有限责任公司 | Salt-based cores and method for production thereof |
DE102010029077A1 (en) * | 2009-05-18 | 2010-11-25 | Ceramtec Ag | Cores based on salt with treated surface |
DE102010043451A1 (en) * | 2009-11-06 | 2011-05-12 | Emil Müller GmbH | Salt-based cores, process for their preparation and their use |
BR112012030752A2 (en) * | 2010-06-02 | 2016-11-08 | Emil Müller GmbH | salt cores stabilized by an infiltrate |
DE102012203800B3 (en) * | 2012-03-12 | 2013-05-29 | Federal-Mogul Nürnberg GmbH | Method and device for producing a piston with a cooling channel, and then produced piston |
SI24501A (en) * | 2013-10-21 | 2015-04-30 | Rc Simit, D.O.O. | Binder for free flowing material and method of binder use |
DE102015209762A1 (en) * | 2015-05-28 | 2016-12-01 | Bayerische Motoren Werke Aktiengesellschaft | Method for producing SMC hollow components |
CN107884258B (en) * | 2017-11-24 | 2021-07-20 | 四川共享铸造有限公司 | Die set |
JP2021098212A (en) | 2019-12-23 | 2021-07-01 | トヨタ自動車株式会社 | Method for producing salt core |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1934787A1 (en) * | 1969-07-09 | 1971-01-14 | Schmidt Gmbh Karl | Salt core for foundry purposes |
FR2077555A1 (en) * | 1969-12-16 | 1971-10-29 | Sumitomo Chemical Co | Magnesium chloride-based water-soluble - removable casting cores |
JPS4937175B1 (en) * | 1969-12-16 | 1974-10-07 | ||
US4446906A (en) * | 1980-11-13 | 1984-05-08 | Ford Motor Company | Method of making a cast aluminum based engine block |
DE3530910A1 (en) * | 1984-08-31 | 1986-03-13 | Hitachi, Ltd., Tokio/Tokyo | METHOD FOR PRODUCING CASTING MOLDS |
JPS6393445A (en) * | 1986-10-07 | 1988-04-23 | Ube Ind Ltd | Core for die casting |
JPH0824996B2 (en) * | 1989-10-31 | 1996-03-13 | 宇部興産株式会社 | Water-soluble core and method for producing the same |
US6045745A (en) * | 1997-01-15 | 2000-04-04 | Reno; Kurtis Pierre | Water soluble cores containing polyvinyl alcohol binders and related methods |
FR2842129B1 (en) * | 2002-07-10 | 2005-04-08 | Peugeot Citroen Automobiles Sa | METHOD FOR MOLDING A METAL PIECE IN A MOLD COMPRISING AT LEAST ONE MOLDING CORE, METHOD FOR PRODUCING A MOLDING CORE, AND MOLDING CORE |
JP2004174598A (en) * | 2002-11-23 | 2004-06-24 | Taiyo Machinery Co Ltd | Molding sand for water-soluble core and method for making water-soluble core and water-soluble core |
DE10305612B4 (en) * | 2003-02-11 | 2005-04-07 | Ashland-Südchemie-Kernfest GmbH | Coating materials for casting cores |
DE10312782B4 (en) * | 2003-03-21 | 2005-05-04 | Emil Müller GmbH | Water-soluble salt cores and process for producing water-soluble salt cores |
JP4209286B2 (en) * | 2003-08-19 | 2009-01-14 | トヨタ自動車株式会社 | High-strength water-soluble core and method for producing the same |
JP2005066634A (en) * | 2003-08-22 | 2005-03-17 | Toyota Motor Corp | Water-soluble core binder, water-soluble core, and method for manufacturing the same |
EP1781433A2 (en) * | 2003-12-17 | 2007-05-09 | KS Aluminium Technologie Aktiengesellschaft | Removable core for casting metal and method for producing a core |
DE10359547B3 (en) * | 2003-12-17 | 2005-03-03 | Emil Müller GmbH | Water soluble salt core prepared by compressing a mixture of water soluble salts and a binder under pressure and heating useful in casting operations |
-
2006
- 2006-09-29 KR KR20087010373A patent/KR101492786B1/en not_active IP Right Cessation
- 2006-09-29 EP EP06793909.0A patent/EP1934002B1/en active Active
- 2006-09-29 US US11/992,631 patent/US20090250587A1/en not_active Abandoned
- 2006-09-29 JP JP2008532791A patent/JP4950998B2/en not_active Expired - Fee Related
- 2006-09-29 BR BRPI0616623-7A patent/BRPI0616623B1/en not_active IP Right Cessation
- 2006-09-29 KR KR1020147011600A patent/KR101580775B1/en not_active IP Right Cessation
- 2006-09-29 WO PCT/EP2006/066882 patent/WO2007036563A1/en active Application Filing
-
2011
- 2011-11-07 JP JP2011243844A patent/JP5412492B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2007036563A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1934002B1 (en) | 2019-07-31 |
JP2012030289A (en) | 2012-02-16 |
BRPI0616623B1 (en) | 2018-05-15 |
JP5412492B2 (en) | 2014-02-12 |
US20090250587A1 (en) | 2009-10-08 |
JP4950998B2 (en) | 2012-06-13 |
BRPI0616623A2 (en) | 2011-08-23 |
KR20080058446A (en) | 2008-06-25 |
KR20140072149A (en) | 2014-06-12 |
KR101580775B1 (en) | 2015-12-30 |
WO2007036563A1 (en) | 2007-04-05 |
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