EP2040865A1 - Wasserlöslicher salzkern mit funktionsbauteil - Google Patents
Wasserlöslicher salzkern mit funktionsbauteilInfo
- Publication number
- EP2040865A1 EP2040865A1 EP07765133A EP07765133A EP2040865A1 EP 2040865 A1 EP2040865 A1 EP 2040865A1 EP 07765133 A EP07765133 A EP 07765133A EP 07765133 A EP07765133 A EP 07765133A EP 2040865 A1 EP2040865 A1 EP 2040865A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- salt core
- water
- casting
- salt
- core
- 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
- 150000003839 salts Chemical group 0.000 title claims abstract description 133
- 238000005266 casting Methods 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000011230 binding agent Substances 0.000 claims description 48
- 238000004519 manufacturing process Methods 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 238000000465 moulding Methods 0.000 claims description 16
- 229920003023 plastic Polymers 0.000 claims description 12
- 239000004033 plastic Substances 0.000 claims description 12
- 239000000654 additive Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 235000002639 sodium chloride Nutrition 0.000 description 18
- -1 for example Substances 0.000 description 16
- 229920000642 polymer Polymers 0.000 description 14
- 229910019142 PO4 Inorganic materials 0.000 description 13
- 239000000203 mixture Substances 0.000 description 12
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- 239000011162 core material Substances 0.000 description 10
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- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 7
- 235000019353 potassium silicate Nutrition 0.000 description 7
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 239000001913 cellulose Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
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- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical group OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
- 229920003002 synthetic resin Polymers 0.000 description 5
- 229920000388 Polyphosphate Polymers 0.000 description 4
- 239000004793 Polystyrene Substances 0.000 description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004512 die casting Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
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- 239000005060 rubber Substances 0.000 description 4
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- 229910052783 alkali metal Inorganic materials 0.000 description 3
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- 238000013461 design Methods 0.000 description 3
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- 229910052816 inorganic phosphate Inorganic materials 0.000 description 3
- 239000003607 modifier Substances 0.000 description 3
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- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 3
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- 229920002647 polyamide Polymers 0.000 description 3
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- 239000011833 salt mixture Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000001488 sodium phosphate Substances 0.000 description 3
- 239000004328 sodium tetraborate Substances 0.000 description 3
- 235000010339 sodium tetraborate Nutrition 0.000 description 3
- 239000000454 talc Substances 0.000 description 3
- 229910052623 talc Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 229920012196 Polyoxymethylene Copolymer Polymers 0.000 description 2
- 229920009382 Polyoxymethylene Homopolymer Polymers 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical group [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical class O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
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- 229910002804 graphite Inorganic materials 0.000 description 2
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- 229910052602 gypsum Inorganic materials 0.000 description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 239000002808 molecular sieve Substances 0.000 description 2
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 2
- 235000019799 monosodium phosphate Nutrition 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 229920001643 poly(ether ketone) Polymers 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
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- 239000011591 potassium Substances 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 235000011164 potassium chloride Nutrition 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
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- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 235000019830 sodium polyphosphate Nutrition 0.000 description 2
- 235000019832 sodium triphosphate Nutrition 0.000 description 2
- 235000000346 sugar Nutrition 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
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- 208000013201 Stress fracture Diseases 0.000 description 1
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- AZFNGPAYDKGCRB-XCPIVNJJSA-M [(1s,2s)-2-amino-1,2-diphenylethyl]-(4-methylphenyl)sulfonylazanide;chlororuthenium(1+);1-methyl-4-propan-2-ylbenzene Chemical compound [Ru+]Cl.CC(C)C1=CC=C(C)C=C1.C1=CC(C)=CC=C1S(=O)(=O)[N-][C@@H](C=1C=CC=CC=1)[C@@H](N)C1=CC=CC=C1 AZFNGPAYDKGCRB-XCPIVNJJSA-M 0.000 description 1
- 150000001241 acetals Chemical class 0.000 description 1
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- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
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- YZYDPPZYDIRSJT-UHFFFAOYSA-K boron phosphate Chemical compound [B+3].[O-]P([O-])([O-])=O YZYDPPZYDIRSJT-UHFFFAOYSA-K 0.000 description 1
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- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
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- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
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- 150000004683 dihydrates Chemical class 0.000 description 1
- WVMPCBWWBLZKPD-UHFFFAOYSA-N dilithium oxido-[oxido(oxo)silyl]oxy-oxosilane Chemical compound [Li+].[Li+].[O-][Si](=O)O[Si]([O-])=O WVMPCBWWBLZKPD-UHFFFAOYSA-N 0.000 description 1
- CDMADVZSLOHIFP-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane;decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 CDMADVZSLOHIFP-UHFFFAOYSA-N 0.000 description 1
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- 239000007789 gas Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- PMYUVOOOQDGQNW-UHFFFAOYSA-N hexasodium;trioxido(trioxidosilyloxy)silane Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[O-][Si]([O-])([O-])O[Si]([O-])([O-])[O-] PMYUVOOOQDGQNW-UHFFFAOYSA-N 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
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- HWSZZLVAJGOAAY-UHFFFAOYSA-L lead(II) chloride Chemical compound Cl[Pb]Cl HWSZZLVAJGOAAY-UHFFFAOYSA-L 0.000 description 1
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- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 description 1
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- 238000002844 melting Methods 0.000 description 1
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- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004304 potassium nitrite Substances 0.000 description 1
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- 239000000843 powder Substances 0.000 description 1
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- 125000005624 silicic acid group Chemical class 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
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- 229920002050 silicone resin Polymers 0.000 description 1
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- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
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- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 235000011008 sodium phosphates Nutrition 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- RYCLIXPGLDDLTM-UHFFFAOYSA-J tetrapotassium;phosphonato phosphate Chemical compound [K+].[K+].[K+].[K+].[O-]P([O-])(=O)OP([O-])([O-])=O RYCLIXPGLDDLTM-UHFFFAOYSA-J 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000010117 thixocasting Methods 0.000 description 1
- 238000010119 thixomolding Methods 0.000 description 1
- 239000001226 triphosphate Substances 0.000 description 1
- 235000011178 triphosphate Nutrition 0.000 description 1
- 125000002264 triphosphate group Chemical group [H]OP(=O)(O[H])OP(=O)(O[H])OP(=O)(O[H])O* 0.000 description 1
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 125000002348 vinylic group Chemical group 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0036—Casting in, on, or around objects which form part of the product gears
-
- 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
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/12—Casting in, on, or around objects which form part of the product for making objects, e.g. hinges, with parts which are movable relatively to one another
Definitions
- the invention relates to water-soluble salt cores for the production of hollow moldings by casting, the at least one mechanical and / or electrical / electronic component in, for. B. positive connection or in a cavity containing, process for their preparation and their use.
- Foundry cores which are washed out after casting parts, have long been known. They are increasingly used instead of sand cores, as they can be removed after the casting by simply washing and eliminates a costly treatment of the castings.
- Such salt cores are often blended with various additives to improve their manufacturing or processing properties.
- organic or inorganic binders are added to improve the mechanical properties.
- inorganic phosphates as a binder is described for example in DE-B-103 59 547. But also pure salts can be used as salt cores.
- WO 85/04605 describes the simultaneous use of a salt core together with an alumina / silica fiber pad. Both elements are used as individual parts in the production of castings, see Figures 1 and 2.
- a salt core can be provided with tubes through which reaction gases can be removed during the casting process.
- EP-AI 293 276 a device for producing a die-cast component with a core and an insert is known.
- a yoke for an electromagnet can be connected to the salt core, so that there is a housing for an electromagnet in the casting process.
- the yoke for the electromagnet is only partially connected to the salt core. It is essential that the insert exerts a support function for the salt core and bending moments acting on the core can be transferred to the insert.
- the EP application relates to the use of inserts that are partially exposed on the surface of the salt core.
- a core, z. B. salt core placed in a mold and washed out after the metal casting, after which functional components are installed in the resulting cavity.
- a two-shell construction can be realized. This is the case, for example, in pumps, valves, fans, etc., for example in the automotive sector. This is associated with a considerable installation effort, since often a large number of parts must be mounted after the casting of the housing.
- Two- or multi-shell housings must then be matched prior to assembly, and ensure adequate sealing of the assembled part.
- Object of the present invention is to provide the possibility of inexpensive production of hollow moldings such as housings, can be introduced into the functional components in a costly manner, positioned and fixed and a
- Functional cavity is created in which the functional components can perform their function, eg. B. gears can move.
- the multi-stage process of manufacturing housing parts, inserting functional parts and final assembly with sealing is to be simplified. This is desirable, among other things, because in the
- the object is achieved by a water-soluble salt core for the production of hollow moldings by casting, wherein the salt core at least one mechanical and / or electrical / electronic component in positive Contains connection or in a functional cavity, which is connected by the casting process, for example wholly or partially, movable or flexible with the Hohlforrnanalysis.
- axle box For an axle with axle bearings, e.g. the axle be movable while the axle box is fixedly connected to the cavity body.
- the object is further achieved by a water-soluble salt core for the production of hollow moldings by casting, wherein the salt core contains at least one mechanical and / or electrical / electronic component in positive connection or in a functional cavity that does not support the core.
- the component thus does not increase the strength, hardness or other mechanical properties of the salt core compared to a solid salt core that contains no component.
- the object is further achieved by a water-soluble salt core for the production of hollow moldings by casting, wherein the salt core contains at least one mechanical and / or electrical / electronic component in positive connection or in a functional cavity, which is largely or completely enclosed by the salt core.
- the salt core itself can thus have a cavity in which the component is located, so that it is not spatially fixed in the later cavity body.
- a functional cavity may be a cavity in the salt core in which the functional component is present or arranged. He may also designate the cavity, which is formed in the later casting by the salt core and in which the functional parts can exercise their subsequent function.
- the invention further relates to a process for the preparation of such salt cores, wherein the salt, optionally mixed with binders and other additives, filled into a mold, compacted under pressure and / or heat treated, wherein the at least one component before or after filling, compacting and / or heat treatment is introduced into the salt core.
- the salt cores of the invention are used for the production of hollow moldings or functional parts in metal or plastic casting.
- the hollow moldings can be used for example in the automotive sector or engine construction.
- the mechanical and / or electrical / electronic components can have very different functions and shapes, their material must be selected so that it, embedded in the salt core, the casting conditions (temperature and pressure) can withstand at least for the time of a casting process. Since the functional parts are embedded in the salt core and salt is a good thermal insulator, the components themselves need not be able to withstand the casting conditions. This makes it possible to use heat-sensitive materials for the components.
- the components can be constructed of any suitable material, for example, metals or plastics and composites thereof. Other organic or inorganic materials, such as ceramics, oxide materials, etc. may also be used as the starting material for the components.
- Salt cores are used for the production of hollow moldings, as they define just the later cavity in a mold body. These are also called
- Hollow moldings may be, for example, housing for moving parts, for example
- Engine housing gear housing or parts thereof or pump housing act. It may also be piping systems designed to carry fluids. Such channels or pipe systems may include, for example, flaps, valves or electrical or electronic components.
- the housing can be used for later use z. B. filled with oil or other liquids.
- the hollow bodies according to the invention can also be housings for electrical or electronic components.
- the hollow moldings are housings of gearboxes, axle elements, pump wheels, etc.
- These hollow shaped bodies contain one or more mechanical and / or electrical / electronic components in the finished form. It may, for example, be one or more, preferably two or more, in particular three or more components. For example, 1 to 30, preferably 2 to 20, in particular 3 to 10 such components may be present in the salt core. Often, the components are movable or flexibly connected to the mold body by the casting process. This applies, for example, to axes.
- the salt core can be designed, for example, so that the axis is present in the salt core, while the axle bearings are provided adjacent to or in the outer sides of the salt core or from the outside of the salt core, so that the axle bearings are firmly connected to the cast housing after casting later while the axles themselves are movable.
- two or more components mechanically and / or electrically / electronically interact with each other.
- This is the case, for example, with gears for the construction of a transmission.
- gears for the construction of a transmission.
- gears for the construction of a transmission.
- gears for the construction of a transmission.
- gears for the construction of a transmission.
- gears for the construction of a transmission.
- gears for the construction of a transmission.
- gears for the construction of a transmission.
- gears for the construction of a transmission.
- a plurality of gears are assembled into a later gear, the individual gears mesh and interact with each other.
- the components can also be designed so that they interact with the housing itself. This is the case, for example, with impellers or pump wheels, which are adapted to the housing wall so that a pumping capacity for a fluid medium is achieved.
- the axles and / or axle bearings, which carry the impellers or pump wheels, are so enclosed in the salt core that they determine the position of the impellers or impellers in the later part, so that they can be moved in the component and fulfill their functions.
- the components may also be combined mechanical and electrical / electronic components, such as electric motors. These electrical or electronic components can be completely introduced into the salt core, in which case they result in an entire functional unit with the later housing. These may be components that are movably or flexibly connected to the hollow molded body after the casting process.
- flaps or valves are connected to a channel-shaped, for example, hollow shaped body in such a way that they block the channel in one position, but in another position allow the passage of a fluid through the channel.
- movable valve flaps may be arranged on a rigid axle, which is rigidly and firmly connected to the walls of the hollow shaped body after the casting process. In this case, only the axle ends are exposed on the surface of the salt core.
- the components are largely or completely enclosed by the salt core. Often they rest at one or more points on the surface of the salt core or protrude from this, in order to be able to form a connection with the later hollow molded body.
- the expression "largely enclosed” means that preferably at least 50%, more preferably at least 70%, in particular at least 90% of the surface of the component within the salt core and not present on the surface thereof or corresponding surface portions of the salt core are not formed by components.
- the components can have axes and / or axle bearings in the salt core, with only (one or more) axes and / or axle bearings projecting out of the salt core or bearing against the surface thereof.
- these axes are rigidly connected to the casting or movably mounted in the casting.
- gear wheels, flaps, valves, gear parts, axle elements or drive elements usually project just the axes or axle bearings from the salt core or lie on the surface.
- the components exert no support function for the core.
- the yoke shown in EP-A-1 293 276 also exerts a support function for the salt core by absorbing bending moments.
- the water-soluble salt cores according to the invention contain the components in positive connection. This means that there is usually no back-casting of the components with a molten metal or plastic melt and associated tinseling occurs. Such a form-fitting connection to a composite also does not have the embodiments described in WO 85/04605 and US 4,446,906.
- the components are contained in a form-locking connection in the water-soluble salt core, that no casting with a molten metal or plastic melt and no tinsel formation occur.
- the components are sealed during casting with respect to a cast metal or casting plastic. As a result, no metal film or plastic film can form on the core-covered surface of the components.
- the component may be connected for this purpose in any suitable manner with the water-soluble salt core. It may for example be pressed into the salt core, glued and / or sintered.
- the water-soluble salt core holds the Components in a specific position in space, so that they are in the desired orientation in the subsequent casting process. They are thus positioned in the metal casting mold. For example, they can be positioned in a depression of a die casting tool in a position-defined manner.
- the salt core can be considered as a so-called "black box" which is cast irrespective of the components contained therein.
- movably connected or “interlocking” refers to an arrangement, as it is for example in the case of several gears, which together form a gear. Also flaps and slides or other controls can interact in this form.
- the components are selected from gears and parts thereof, vanes, pump wheels, flaps, valves, ducts, piping systems, drive elements or electrical or electronic components.
- the components come from the automotive sector. These may be parts of the drive, monitoring, control systems.
- the water-soluble Salzkeme can contain all usual ingredients.
- the main part is a water-soluble salt or a mixture of water-soluble salts such as sodium chloride or potassium chloride.
- Common other ingredients are binders.
- binders can be used for water-soluble salt cores.
- the binders can be selected according to the practical requirements and adapted to the respective salt cores.
- the cores may be compacted or not compacted, sintered or sintered. They can also be tied or unbound.
- the salt cores can be composed of all commonly used salts.
- potassium chloride and potassium nitrate, potassium nitrite, sodium nitrate, sodium nitrite, copper chloride, lithium chloride, lead chloride, magnesium chloride, barium chloride, calcium chloride and mixtures thereof can be used. Suitable mixtures are described, for example, in WO 01/02112.
- the salt cores can be modified by fibers or whiskers or additives.
- graphite, silicon, alumina or silicon carbide may be used as aggregates.
- drying agents such as magnesium carbonate or magnesium phosphate, as also described in WO 85/04605.
- expansion modifiers can be used to control thermal expansion and avoid stress fractures. Examples of suitable Expansion modifiers are alumina, glass powders, copper alloys, graphite, talc, or fine alumina / silica fibers. Such modifiers are also described in WO 85/04605.
- core materials it is also possible to use alkali metal metasilicates and mixtures thereof with alkali metal disilicates.
- Metasilikat be combined with 30 to 80 wt .-% disilicate.
- An example is potassium and / or lithium metasilicate in combination with potassium and / or lithium disilicate, to which may be added sodium disilicate and / or sodium metasilicate, see for example GB-A-949 066.
- the addition of alumina to salt cores to smooth the surfaces is also possible and described for example in JP-A-60118350.
- ingredients or adjuvants may be used in place of or in addition to binders as described below.
- Binders suitable for salt cores may be organic and / or inorganic agents. It may be low molecular weight, oligomeric or polymeric compounds. It is also possible to use mixtures of organic and inorganic binders. In this case, all customary suitable organic and / or inorganic
- Binders are used.
- Suitable inorganic binders are phosphates, as described, for example, in DE-B-103 59 547. According to this embodiment, inorganic phosphates or mixtures of inorganic phosphates can be used.
- Suitable phosphates are, for example, alkali metal phosphates and metal phosphates, for example sodium phosphate, sodium polyphosphate, sodium tripolyphosphate, aluminum phosphates such as monoaluminum phosphate, boron phosphate and also potassium phosphates, for example tetrapotassium pyrophosphate.
- Monosodium phosphate can also be used.
- the phosphates can be derived from (poly) phosphate chains of different lengths.
- phosphate units there may be individual phosphate units, such as in monosodium phosphate. It is also possible for longer phosphate chains of different chain numbers to be present, as in tripolyphosphate or tetrapyrophosphate. They are derived from the monomeric phosphate by dehydration, which leads to di-phosphates, tri-phosphates and ultimately polyphosphates. These chains can also be combined into rings to form so-called metaphosphates, which are tri-metaphosphates, tetra-metaphosphates, etc. according to the number of phosphoric acid units.
- phosphates one, several or all hydrogen atoms may be replaced by metals, for example alkali metals or aluminum. The same applies to a replacement by boron.
- Suitable phosphates are sometimes referred to as refractory binders. Suitable amounts of the phosphate binders are in the range of 0.5 to 10 wt .-%, based on the finished salt mixture. Particularly preferred is worked with 1 to 5 wt .-%.
- release agents can be used.
- Suitable phosphates are in particular sodium polyphosphate and sodium hexametaphosphate as well as phosphoric acid per se, as described, for example, in DE-A-195 25 307. According to the invention, in addition to the phosphates and the free phosphoric acid and oligomeric or polymeric phosphoric acids can be used. Suitable phosphate binders are described inter alia in SU-A-16 39 872.
- Polyphosphate chains or borate ions for use as binders are also described in US 5,573,055.
- the polyphosphate chains and / or borate ions are preferably derived from at least one water-soluble phosphate and / or borate glass.
- bentonites can also be used as binders.
- the water-soluble phosphate glass may preferably contain 30 to 80 mol% of P 2 O 5 , 20 to 70 mol% of X 2 O, 0 to 30 mol% of MO and 0 to 15 mol% of L 2 O 3 , where X is Na , K or Li, M means Ca, Mg or Zn and L means Al, Fe or B.
- the water-soluble phosphate glass particularly preferably contains from 58 to 72% by weight of P 2 O 5 , from 28 to 42% by weight of Na 2 O and from 0 to 16% by weight of CaO.
- Preferred glass systems are derived from Na 2 O and P 2 O 5 , for example 5 Na 2 O and 3 P 2 O 5 . It is also possible to additionally have K 2 O in the glasses. It is also possible to use as binder, a molecular sieve, for example, the structure Na 86 [(A10 2) 6 g (Si0 2) io 6] x H 2 O. Such systems are also described in US 5,711,792.
- borax, magnesium oxide, talc and / or alkaline earth metal salts can be used as inorganic binders. These binders can also be used in amounts of 0.5 to 10 wt .-%. They are described for example in US 3,356,129.
- binders are prepared by dissolving the corresponding water-soluble glasses in aqueous solution and applied in this form.
- the amounts to be used are again preferably from 0.5 to 10% by weight, based on the finished salt mixture.
- Further molecular sieves and waterglasses which can be used according to the invention and also other silicic acids are known to the person skilled in the art.
- binders for cores described in DE-A-19 24 991 can also be used according to the invention. There is described to add up to 10 wt .-% borax, magnesium oxide or talc individually or in a mixture. In addition, these ingredients can be used together with water glass, or water glass can be used alone as a binder to achieve a high compressive and flexural strength. It can also be used on GB
- A-1 274 966 be referenced.
- silicate systems In addition to the described phosphate systems, silicate systems and mixtures thereof, it is also possible to use other inorganic systems which are derived, for example, from sulfates or carbonates and other metal salts. Suitable systems are known to the person skilled in the art.
- Gypsum or cement may also be considered as inorganic binders, which may be the form which has not yet set with water or which has hardened with water. Gypsum can thus be present as a semihydrate as well as a dihydrate.
- Cement is usually a mixture of calcium silicates, calcium aluminates and calcium ferrites, that is composed of CaO with SiO 2 , Al 2 O 3 and Fe 2 O 3 in different proportions.
- the inorganic binders can be used in combination with organic binders.
- water glass and a synthetic resin can be used as a binder as described in US 3,764,575.
- water glass and a synthetic resin as binder in a ratio of 1: 10 to 10: 1, preferably 1: 5 to 5: 1, in particular 2: 1 to 1: 2 combined.
- the synthetic resin may be a condensation product based on furan or phenol.
- any suitable organic binders which can be used as binders for salt cores.
- These are in particular oligomeric or polymeric systems, but also low molecular weight organic compounds such as sugar can be used.
- Suitable organic binder systems are partially known in the art for
- Salt cores are known.
- paraffin waxes synthetic organic resins such as polystyrene or silicone resins can be used.
- polyethylene glycols can be used which have, for example, a molecular weight in the range of 4000 to 8000, preferably 5000 to 7000.
- binder systems are described, for example, in GB-A-2 105 312 and EP-A-0 127 367. Such systems are also referred to for example in US 5,573,055.
- Alkaline earth metal chlorides, sulfates or borates, water glass and synthetic resins as binders are described, for example, in US Pat. No. 3,764,575.
- Suitable organic binders are, in particular, natural and synthetic polymers.
- Natural polymers include, for example, cellulose and cellulose derivatives such as carboxymethyl cellulose, cellulose acetate, cellulose acetobutyrates as well as other cellulose esters and cellulose ethers. Other cellulose derivatives can be formed by oxidation reactions or by dehydration.
- polysaccharides and also low molecular weight sugars can be used.
- suitable synthetic binders are polyvinylpyrrolidone and polymers derived therefrom, such as vinylpyrrolidone-styrene copolymers, vinylpyrrolidone-vinyl acetate copolymers and similar polymers.
- Polyalkylene glycols and their ethers may also be used, in particular polyethylene glycol.
- the polymers can be used in powdery, granular or latex form.
- polystyrenes for example polyethylenes and polypropylenes, polystyrenes, polyvinyl chlorides, polyamides, polyurethanes, polyesters, polyethers, polysulfones, polyether ketones, polycarbonates, etc.
- Polymeric resins can also be used according to the invention, for example polyester resins or epoxy resins. These can be one-component or two-component systems.
- Organic binders are usually used in amounts of 0.5-10% by weight, based on the total salt mixture.
- Useful polymer dispersions can be based, for example, on acrylic esters or styrene / butadiene.
- suitable polymers are polystyrene, polyethylene, polyvinyl chloride, polybutadiene, polyacrylonitrile, polymethyl methacrylates, polyethylene terephthalates, polyamide 6, polyamide 66.
- Specific polymer classes include acetals, polyamides, polyamideimides, polyarylates, polycarbonates, polyesters, polyethers, polyetherketones, polyetherimides, polyimides, polyphenylene oxides , Polyphenylene sulfides and polysulfones.
- resins especially phenol-formaldehyde resins, urea-formaldehyde resins, unsaturated polyester resins, epoxy resins and melamine-formaldehyde resins may be mentioned.
- rubbers there may be mentioned, in particular, styrene-butadiene rubbers, polybutadiene rubbers, ethylene-propylene rubbers, polychloroprene rubbers, polyisoprene rubbers, nitrile rubbers, butyl rubbers, silicone rubbers and urethane rubbers.
- the polymers can be free-radically, anionically, cationically or polymerized by radiation.
- Organic polymers used according to the invention are in particular vinylic polymers. These copolymers can be applied to the salts to form the solidified salt cores by any suitable method. They can be applied, for example, in molten or dissolved form. The necessary and suitable quantities in individual cases can be determined by the skilled person by simple hand tests.
- polyacetals especially polyoxymethylenes and their copolymers. These are often used instead of paraffin or polyolefin dispersants. It is also possible to use mixtures of polyoxymethylene homopolymers or copolymers and a polymer which is immiscible therewith as binder.
- Polyoxymethylene homo- or - copolymers preferably have a melting point of at least 150 0 C and molecular weights (weight average) in the range from 5000 to 150000. It can for example mixtures of polyoxymethylene homopolymers and copolymers, and polymers based on olefins, vinyl aromatic monomers, Vinylestern , Vinyl alkyl ethers or alkyl methacrylates.
- Suitable polymers are described for example in EP-BO 5951 460 and EP-BI 276 811.
- To remove the binder it can be treated with a gaseous, acidic atmosphere.
- Organic binders suitable as binders according to the invention are, for example, in particular the polymers used for injection molding applications.
- Suitable organic binders are, for example, bitumen and tar.
- binder reference may be made to the keyword "binder” in Römpp Chemielexikon, 9th ed.,.
- binders are described in DE-B-103 59 547. It is also possible to use with pure salts, d. H. without binder to make the core.
- the preparation of the water-soluble salt cores is carried out by filling the salt, optionally mixed with binders and other additives in a mold. Then it is compressed and heat-treated in the usual way under pressure, wherein the heat treatment is preferably followed by the compression. Suitable methods are described for example in DE-B-103 59 547, EP-AO 019 015, US 4,446,906, WO 85/04605 and WO 2004/082866.
- the pressing of the mixture in the mold can be carried out at a pressure of 1500 to 2500 KN / cm 2 or 600 to 2000 bar, preferably 700 to 1000 bar. Di of US 3,963,818, for example, a pressure of 1.5 to 4 tons / cm 2 called.
- the heat treatment can be carried out, for example, at temperatures in the range of 730 ° C or less, for example at temperatures between 200 0 C and 650 ° C. According to WO 2004/082866 is carried out at temperatures of 500-740 0 C, while operating according to US 3,963,818 at temperatures ranging from 100 to 300 ° C.
- the selection of suitable parameters can be made by a person skilled in the art.
- the at least one component is inventively introduced before or after the filling, compression and / or heat treatment in the salt core.
- the components can be arranged in the mold before it is filled with the salt.
- the components can be pressed into the salt core, glued and / or sintered.
- the salt core halves can be glued together with the components to form a unit.
- the components are introduced into the salt cores in such a way that they are already present in the position intended for the future hollow molded body.
- the salt cores of the invention are used for the production of hollow moldings or functional parts in metal or plastic casting.
- the metal casting can be carried out, for example, as described in the above-mentioned literature.
- For different casting methods can Castings, John
- Thixo Casting Squeeze Cast, called Thixo Casting and Thixo Molding.
- casting metal are the usual metals in die casting aluminum, magnesium, zinc or
- plastic casting in particular plastic injection molding, all suitable plastic materials can be used.
- plastic materials Preferably, polystyrene, polyamides,
- Polyurethanes cellulose ethers, cellulose esters, polyethylene, polypropylene,
- Polymethacrylklander and other thermoplastics hardening in the tool thermosets or vulcanizing elastomers of rubber or silicone rubber or foamed plastics, for example.
- reinforced materials such as ABS or ASA plastics can also be used. In this
- the method according to the invention it is possible to produce a one-part or single-shell functional unit which avoids the problems of adaptation and sealing of a multi-part design.
- the one-piece housing shape is much more stable than a two- or multi-part construction.
- the invention is further illustrated by the following example.
- the two-piece salt core corresponded to a tub with a lid. In the recesses for the bearings were the two gears introduced, and the lid of the salt core was applied and glued. Normal salt (NaCl) was used for the preparation of the salt core.
- the salt core thus obtained was fixed in a mold and surrounded with aluminum.
- the bushings of the axle bearings entered into a connection with the die-cast aluminum body.
- FIG. 1 shows in the upper region both the toothed wheels and the not yet equipped with toothed wheels but provided with recesses in two parts
- the salt core is composed of a tub B with a lid A.
- the gears E and F are introduced during assembly and fixed in space, as they should be present in the later gear arrangement.
- the axle bearings came out through corresponding openings of the salt core, whereby a connection of the aluminum die-cast with the bearings was possible.
- Bear bushes in the subsequent metal casting with the housing form a unit in which the gears are movably mounted.
- the functional cavity, in which the gears are already present in the salt core, but also in the later hollow shaped body, is clearly visible in the figure.
- the lower part of the figure shows a cross-sectional view and top view of the hollow molded body, from which the salt has already been washed out.
- the gears are now movably mounted in the hollow body and interlock.
- the example shows how through a two-piece salt core, the components can be provided so that they can interact with each other as in the later finished casting. It would also be possible to first press the gears in the salt core, so that they are positively connected with him. This salt core could then be fixed in the casting tool and poured around, followed by the removal of the salt core.
- FIG. 1 shows how through a two-piece salt core, the components can be provided so that they can interact with each other as in the later finished casting. It would also be possible to first press the gears in the salt core, so that they are positively connected with him. This salt core could then be fixed in the casting tool and poured around, followed by the removal of the salt core.
- FIG. 1 shows how through a two-piece salt core, the components can be provided so that they can interact with each other as in the later finished casting. It would also be possible to first press the gears in the salt core, so that they are positively connected with him. This salt core could then be fixed in the casting tool and poured around, followed by the removal of the salt core
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Detergent Compositions (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006031532A DE102006031532B3 (de) | 2006-07-07 | 2006-07-07 | Wasserlöslicher Salzkern mit Funktionsbauteil |
| PCT/EP2007/006055 WO2008003517A1 (de) | 2006-07-07 | 2007-07-09 | Wasserlöslicher salzkern mit funktionsbauteil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2040865A1 true EP2040865A1 (de) | 2009-04-01 |
| EP2040865B1 EP2040865B1 (de) | 2010-01-27 |
Family
ID=38610891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07765133A Not-in-force EP2040865B1 (de) | 2006-07-07 | 2007-07-09 | Wasserlöslicher salzkern mit funktionsbauteil |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2040865B1 (de) |
| AT (1) | ATE456409T1 (de) |
| DE (2) | DE102006031532B3 (de) |
| WO (1) | WO2008003517A1 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008004929A1 (de) * | 2008-01-18 | 2009-07-23 | Ks Aluminium-Technologie Gmbh | Druckfester Kern mit verbessertem Binder |
| BR112012010788A2 (pt) * | 2009-11-06 | 2016-03-29 | Emil Müller GmbH | núcleos na base de sal, processo para a produção dos mesmos e uso dos mesmos |
| DE102010038455A1 (de) | 2010-07-27 | 2012-02-02 | Federal-Mogul Nürnberg GmbH | Verfahren zur Herstellung von wasserlöslichen Salzkernen zur Ausbildung von Hohlformen in Gießverfahren |
| DE102014214528A1 (de) | 2013-07-24 | 2015-01-29 | Emil Müller GmbH | Salzkerne und generative Fertigungsverfahren zur Herstellung von Salzkernen |
| EP3790719A4 (de) * | 2018-06-14 | 2021-07-07 | Magna Exteriors Inc. | Hohlstruktur für formpressen |
| DE102019211441A1 (de) * | 2019-07-31 | 2021-02-04 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Gussverfahren mit einer formgebenden Kontur zur Herstellung eines Kernes, Bauteil und System zur Herstellung eines Bauteils |
| DE102020000387A1 (de) | 2020-01-23 | 2021-07-29 | Automoteam Gmbh | Vorrichtung zur Funktionsintegration in ein durch das Urformen von Werkstoffen hergestelltes Urformteil |
| CN115815532B (zh) * | 2022-12-26 | 2025-08-01 | 华南理工大学 | 一种水溶性盐芯材料及其制备方法与应用 |
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| FR1252716A (fr) * | 1959-12-21 | 1961-02-03 | Fonderie De Prec | Perfectionnement au moulage de matières fusibles |
| US3356129A (en) * | 1964-06-30 | 1967-12-05 | Schmidt Gmbh Karl | Process of casting metals by use of water-soluble salt cores |
| GB1261904A (en) * | 1968-06-20 | 1972-01-26 | Aeroplane Motor Alu Cast | Improvements in cast metal pistons |
| DE1924991C3 (de) * | 1969-05-16 | 1978-06-22 | Karl Schmidt Gmbh, 7107 Neckarsulm | Wasserlösliche Salzkerne |
| DE1934787A1 (de) * | 1969-07-09 | 1971-01-14 | Schmidt Gmbh Karl | Salzkern fuer Giessereizwecke |
| US3963818A (en) * | 1971-10-29 | 1976-06-15 | Toyo Kogyo Co., Ltd. | Water soluble core for pressure die casting and process for making the same |
| DE2917208A1 (de) * | 1979-04-27 | 1980-12-04 | Alcan Aluminiumwerke | Giesskern zur erzeugung schwer zugaenglicher hohlraeume in gusstuecken, sowie verfahren zu dessen herstellung |
| US4446906A (en) * | 1980-11-13 | 1984-05-08 | Ford Motor Company | Method of making a cast aluminum based engine block |
| GB2105312B (en) * | 1981-08-07 | 1985-03-13 | Doulton Ind Products Ltd | Moulding |
| GB8314089D0 (en) * | 1983-05-20 | 1983-06-29 | Doulton Ind Products Ltd | Moulding |
| JPS60118350A (ja) * | 1983-11-30 | 1985-06-25 | Izumi Jidosha Kogyo Kk | 高圧鋳造品の内部に空洞を形成する方法 |
| US4539246A (en) * | 1984-03-23 | 1985-09-03 | Deere & Company | Socket casting with a cast-in ball and method of casting |
| GB8409044D0 (en) * | 1984-04-07 | 1984-05-16 | Gkn Technology Ltd | Casting metal articles |
| DE4000278A1 (de) * | 1990-01-08 | 1991-07-11 | Basf Ag | Verfahren zur herstellung eines anorganischen sinterformteils |
| JP3128130B2 (ja) * | 1989-08-16 | 2001-01-29 | ビーエーエスエフ アクチェンゲゼルシャフト | 無機焼結成形体の製造方法 |
| DE3929869A1 (de) * | 1989-09-08 | 1991-03-21 | Martin Dipl Ing Bretschneider | Fahrrad-felgenbremse mit symmetrischer rueckbewegung |
| DE59101468D1 (de) * | 1990-02-21 | 1994-06-01 | Basf Ag | Thermoplastische Massen für die Herstellung keramischer Formkörper. |
| DE4021739A1 (de) * | 1990-07-07 | 1992-01-09 | Basf Ag | Thermoplastische massen fuer die herstellung metallischer formkoerper |
| GB9022754D0 (en) * | 1990-10-19 | 1990-12-05 | Pilkington Controlled Release | Improvements in or relating to water dispersible moulds |
| GB9324509D0 (en) * | 1993-11-30 | 1994-01-19 | Borden Uk Ltd | Foundry binder |
| DE19525307C2 (de) * | 1995-07-12 | 2003-04-03 | Eichenauer Gmbh & Co Kg F | Formmasse zur Herstellung von Gießkernen und Verfahren zur Herstellung eines Gießkerns |
| DE19735012C1 (de) * | 1997-08-13 | 1998-09-03 | Daimler Benz Ag | Verfahren zur Herstellung eines gegossenen Zylinderkopfes |
| DE19803867A1 (de) * | 1998-01-31 | 1999-08-05 | Volkswagen Ag | Verfahren zum Herstellen eines Zylinderkopfes einer Brennkraftmaschine |
| KR20000006623A (ko) * | 1999-07-06 | 2000-02-07 | 이인호 | 고압주조용붕괴성코어의제조방법과코어및그코어의추출방법 |
| DE10019447A1 (de) * | 2000-04-19 | 2001-10-25 | Basf Ag | Bindemittel für anorganische Materialpulver zur Herstellung metallischer und keramischer Formkörper |
| DE10145876A1 (de) * | 2001-09-18 | 2003-04-10 | Daimler Chrysler Ag | Vorrichtung zur Herstellung eines Druckgussbauteils mit einem Kern und einem Einlegeteil |
| DE10227529B4 (de) * | 2002-06-20 | 2010-04-01 | Daimler Ag | Verfahren zur Herstellung einer Bremsscheibe und Bremsscheibe |
| DE10312782B4 (de) * | 2003-03-21 | 2005-05-04 | Emil Müller GmbH | Wasserlösliche Salzkerne und Verfahren zur Herstellung wasserlöslicher Salzkerne |
| US6945309B2 (en) * | 2003-07-18 | 2005-09-20 | Hayes Lemmerz International, Inc. | Method and apparatus for forming a part with dampener |
| DE10359547B3 (de) * | 2003-12-17 | 2005-03-03 | Emil Müller GmbH | Wasserlösliche Salzkerne |
-
2006
- 2006-07-07 DE DE102006031532A patent/DE102006031532B3/de not_active Expired - Fee Related
-
2007
- 2007-07-09 AT AT07765133T patent/ATE456409T1/de active
- 2007-07-09 EP EP07765133A patent/EP2040865B1/de not_active Not-in-force
- 2007-07-09 WO PCT/EP2007/006055 patent/WO2008003517A1/de not_active Ceased
- 2007-07-09 DE DE502007002754T patent/DE502007002754D1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008003517A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2040865B1 (de) | 2010-01-27 |
| WO2008003517A1 (de) | 2008-01-10 |
| DE502007002754D1 (de) | 2010-03-18 |
| ATE456409T1 (de) | 2010-02-15 |
| DE102006031532B3 (de) | 2008-04-17 |
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