WO2007000927A1 - 精密鋳造用スラリー及び鋳型の製造方法 - Google Patents
精密鋳造用スラリー及び鋳型の製造方法 Download PDFInfo
- Publication number
- WO2007000927A1 WO2007000927A1 PCT/JP2006/312435 JP2006312435W WO2007000927A1 WO 2007000927 A1 WO2007000927 A1 WO 2007000927A1 JP 2006312435 W JP2006312435 W JP 2006312435W WO 2007000927 A1 WO2007000927 A1 WO 2007000927A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- zirconium
- producing
- alkaline
- slurry
- mold
- Prior art date
Links
- 239000002002 slurry Substances 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 66
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 63
- 230000008569 process Effects 0.000 title abstract description 13
- 238000005495 investment casting Methods 0.000 title abstract description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 232
- 150000003754 zirconium Chemical class 0.000 claims abstract description 83
- 229910052751 metal Inorganic materials 0.000 claims abstract description 65
- 239000002184 metal Substances 0.000 claims abstract description 65
- 238000002156 mixing Methods 0.000 claims abstract description 37
- 239000000843 powder Substances 0.000 claims abstract description 27
- 125000001453 quaternary ammonium group Chemical group 0.000 claims abstract description 23
- 239000002253 acid Substances 0.000 claims abstract description 22
- 239000001099 ammonium carbonate Substances 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 235000012501 ammonium carbonate Nutrition 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000010335 hydrothermal treatment Methods 0.000 claims abstract description 15
- 239000012736 aqueous medium Substances 0.000 claims abstract description 13
- 229910052726 zirconium Inorganic materials 0.000 claims description 71
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 66
- 239000007864 aqueous solution Substances 0.000 claims description 65
- XJUNLJFOHNHSAR-UHFFFAOYSA-J zirconium(4+);dicarbonate Chemical compound [Zr+4].[O-]C([O-])=O.[O-]C([O-])=O XJUNLJFOHNHSAR-UHFFFAOYSA-J 0.000 claims description 53
- 230000002378 acidificating effect Effects 0.000 claims description 49
- 239000007787 solid Substances 0.000 claims description 39
- WRAGBEWQGHCDDU-UHFFFAOYSA-M C([O-])([O-])=O.[NH4+].[Zr+] Chemical compound C([O-])([O-])=O.[NH4+].[Zr+] WRAGBEWQGHCDDU-UHFFFAOYSA-M 0.000 claims description 38
- 238000005242 forging Methods 0.000 claims description 32
- UJVRJBAUJYZFIX-UHFFFAOYSA-N nitric acid;oxozirconium Chemical compound [Zr]=O.O[N+]([O-])=O.O[N+]([O-])=O UJVRJBAUJYZFIX-UHFFFAOYSA-N 0.000 claims description 32
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical group N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 29
- 150000003839 salts Chemical class 0.000 claims description 24
- 229910021529 ammonia Inorganic materials 0.000 claims description 16
- 230000032683 aging Effects 0.000 claims description 15
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 15
- 229910052845 zircon Inorganic materials 0.000 claims description 14
- 239000003513 alkali Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- IVORCBKUUYGUOL-UHFFFAOYSA-N 1-ethynyl-2,4-dimethoxybenzene Chemical compound COC1=CC=C(C#C)C(OC)=C1 IVORCBKUUYGUOL-UHFFFAOYSA-N 0.000 claims description 7
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 7
- LYTNHSCLZRMKON-UHFFFAOYSA-L oxygen(2-);zirconium(4+);diacetate Chemical compound [O-2].[Zr+4].CC([O-])=O.CC([O-])=O LYTNHSCLZRMKON-UHFFFAOYSA-L 0.000 claims description 6
- 238000005349 anion exchange Methods 0.000 claims description 5
- 238000010304 firing Methods 0.000 claims description 5
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- CENHPXAQKISCGD-UHFFFAOYSA-N trioxathietane 4,4-dioxide Chemical compound O=S1(=O)OOO1 CENHPXAQKISCGD-UHFFFAOYSA-N 0.000 claims description 4
- CMOAHYOGLLEOGO-UHFFFAOYSA-N oxozirconium;dihydrochloride Chemical compound Cl.Cl.[Zr]=O CMOAHYOGLLEOGO-UHFFFAOYSA-N 0.000 claims description 3
- PLQYNMNMYVUVHC-UHFFFAOYSA-F zirconium(4+) tetracarbonate Chemical compound [Zr+4].[Zr+4].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O PLQYNMNMYVUVHC-UHFFFAOYSA-F 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 197
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 24
- -1 ammonia ions Chemical class 0.000 description 20
- 229910001928 zirconium oxide Inorganic materials 0.000 description 19
- 239000000084 colloidal system Substances 0.000 description 17
- 239000000243 solution Substances 0.000 description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000007788 liquid Substances 0.000 description 15
- 239000011230 binding agent Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000002518 antifoaming agent Substances 0.000 description 12
- 239000000126 substance Substances 0.000 description 12
- 239000004094 surface-active agent Substances 0.000 description 11
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- 238000005452 bending Methods 0.000 description 9
- 150000002500 ions Chemical class 0.000 description 9
- 238000003756 stirring Methods 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 238000002296 dynamic light scattering Methods 0.000 description 8
- 239000000839 emulsion Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 7
- 238000010227 cup method (microbiological evaluation) Methods 0.000 description 7
- 150000002430 hydrocarbons Chemical group 0.000 description 7
- 229910017604 nitric acid Inorganic materials 0.000 description 7
- 239000006228 supernatant Substances 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- 230000002776 aggregation Effects 0.000 description 6
- 238000006460 hydrolysis reaction Methods 0.000 description 6
- SJWFXCIHNDVPSH-UHFFFAOYSA-N octan-2-ol Chemical compound CCCCCCC(C)O SJWFXCIHNDVPSH-UHFFFAOYSA-N 0.000 description 6
- 239000011164 primary particle Substances 0.000 description 6
- 230000008719 thickening Effects 0.000 description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 238000004220 aggregation Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 239000013049 sediment Substances 0.000 description 5
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 4
- LTPBRCUWZOMYOC-UHFFFAOYSA-N Beryllium oxide Chemical compound O=[Be] LTPBRCUWZOMYOC-UHFFFAOYSA-N 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- VDZLJWHIOYCKQJ-UHFFFAOYSA-J azane;zirconium(4+);dicarbonate Chemical compound N.[Zr+4].[O-]C([O-])=O.[O-]C([O-])=O VDZLJWHIOYCKQJ-UHFFFAOYSA-J 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- 235000012255 calcium oxide Nutrition 0.000 description 4
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000001879 gelation Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 4
- 238000001027 hydrothermal synthesis Methods 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 229910052863 mullite Inorganic materials 0.000 description 4
- 239000002736 nonionic surfactant Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical compound CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 description 4
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 4
- 238000000108 ultra-filtration Methods 0.000 description 4
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 239000010951 brass Substances 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 230000003301 hydrolyzing effect Effects 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- 150000007530 organic bases Chemical class 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000004448 titration Methods 0.000 description 3
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 2
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- DJOYTAUERRJRAT-UHFFFAOYSA-N 2-(n-methyl-4-nitroanilino)acetonitrile Chemical compound N#CCN(C)C1=CC=C([N+]([O-])=O)C=C1 DJOYTAUERRJRAT-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical group [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 241001424413 Lucia Species 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000003957 anion exchange resin Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 description 2
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 2
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 2
- 238000011033 desalting Methods 0.000 description 2
- VTZCXKGZGDSBQC-UHFFFAOYSA-J diazanium;zirconium(4+);dicarbonate;dihydroxide Chemical compound [NH4+].[NH4+].[OH-].[OH-].[Zr+4].[O-]C([O-])=O.[O-]C([O-])=O VTZCXKGZGDSBQC-UHFFFAOYSA-J 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 229910017053 inorganic salt Inorganic materials 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- YQNQTEBHHUSESQ-UHFFFAOYSA-N lithium aluminate Chemical compound [Li+].[O-][Al]=O YQNQTEBHHUSESQ-UHFFFAOYSA-N 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 230000005070 ripening Effects 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 239000000523 sample Chemical group 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- JAJRRCSBKZOLPA-UHFFFAOYSA-M triethyl(methyl)azanium;hydroxide Chemical compound [OH-].CC[N+](C)(CC)CC JAJRRCSBKZOLPA-UHFFFAOYSA-M 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- OERNJTNJEZOPIA-UHFFFAOYSA-N zirconium nitrate Chemical compound [Zr+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O OERNJTNJEZOPIA-UHFFFAOYSA-N 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- TURPNXCLLLFJAP-UHFFFAOYSA-N 2-[2-(2-hydroxyethoxy)ethoxy]ethyl hydrogen sulfate Chemical compound OCCOCCOCCOS(O)(=O)=O TURPNXCLLLFJAP-UHFFFAOYSA-N 0.000 description 1
- JTXMVXSTHSMVQF-UHFFFAOYSA-N 2-acetyloxyethyl acetate Chemical compound CC(=O)OCCOC(C)=O JTXMVXSTHSMVQF-UHFFFAOYSA-N 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- DUFCMRCMPHIFTR-UHFFFAOYSA-N 5-(dimethylsulfamoyl)-2-methylfuran-3-carboxylic acid Chemical compound CN(C)S(=O)(=O)C1=CC(C(O)=O)=C(C)O1 DUFCMRCMPHIFTR-UHFFFAOYSA-N 0.000 description 1
- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 1
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- 241000190127 Calcinea Species 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
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- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
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- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- 239000010936 titanium Substances 0.000 description 1
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- 125000003944 tolyl group Chemical group 0.000 description 1
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Classifications
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- 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
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
- B22C1/08—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives for decreasing shrinkage of the mould, e.g. for investment casting
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- 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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- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B2235/6567—Treatment time
Definitions
- the present invention relates to a slurry for producing a precision forging mold containing zircoyu sol and a refractory powder, and a method for producing a precision forging mold using the slurry.
- Patent Document 1 There has been disclosed a precision forging binder using an aqueous zirconia sol having a secondary particle size of 2 and 30 nm, pH 7 and 12 (Patent Document 1).
- Patent Document 2 There has been disclosed a fine-fabrication type nodule using a zirco-yusol having a solid solution of calcinia, magnesia, or rare earth element oxide.
- the total amount of yttria and zirconia is 30 to 95 % by mass, and the weight ratio of ⁇ o / ZrO is 0.
- Patent Document 3 A precision forging stucco material having a particle force of 10 to 3 mm obtained by drying, granulating and firing a slurry of pH 4 to 13 of 5 to 40 is disclosed (Patent Document 3).
- Patent Document 5 As a precision manufacturing slurry, there is disclosed a vertical manufacturing method in which a zirco-firer and zirconium carbonate ammonia are used as a binder (Patent Document 5).
- Patent Document 1 Patent No. 312307 Specification
- Patent Document 2 JP-A-5-169185
- Patent Document 3 Patent No. 3138721
- Patent Document 4 Japanese Unexamined Patent Publication No. 2000-126845
- Patent Document 5 Japanese Patent Application Laid-Open No. 2001-18033
- the present invention uses a zirco-azole which is alkaline or acidic and sufficiently stable, and uses the slurry as an inorganic binder for forming a mold, and a precision using the slurry. It is intended to provide metal precision forged products with high surface quality by using forged molds.
- Manufacturing method of slurry for making precision forging mold
- the metal according to the first aspect or the second aspect, wherein the quaternary ammonium ion in the carbonate of the quaternary ammonium is composed of a hydrocarbon group having 1 to 4 carbon atoms.
- the method for producing a slurry for producing a precision forging metal mold according to any one of the first aspect or the third aspect, which is a zirconium salt (B1) strong zirconium salt As a fifth aspect, the method for producing a slurry for preparing a precision forging mold for a metal according to the fourth aspect, which is zirconium salt (B1) strength zirconium carbonate,
- an alkaline zirconazole sol (A2) obtained by a method comprising a step of mixing the alkaline zirconazole (A1) described in the first aspect and a basic zirconium carbonate salt (B2).
- a method for producing a slurry for producing a precision forging metal mold including a step of mixing with a refractory powder (D),
- the method for producing a slurry for producing a precision forged mold according to the sixth aspect obtained by a method comprising a step ( ⁇ ′) of aging the obtained mixed solution at 20 ° C. and aging at 100 ° C.,
- a method for producing a slurry for preparing a precision forged mold of a metal according to the sixth aspect or the seventh aspect, which is a basic zirconium carbonate salt ( ⁇ 2) 1S zirconium carbonate,
- a process for producing a slurry for producing a precision forging mold for metal comprising the step of:
- the slurry for preparing a precision forged mold of a metal according to the ninth aspect, in which the alkaline zirconazole (A3) is the alkaline zirconazole (A1) according to any one of the first to fifth aspects.
- the zirconium salt (B3) in the step (I) is selected from the group consisting of zirconium oxychloride, zirconium oxynitrate, zirconium oxysulfate, zirconium oxyacetate, and mixtures thereof.
- the zirconium salt (B3) in the step (I) a force using an aqueous solution containing a zirconium carbonate ammonium solution and an acid, or an aqueous zirconium carbonate solution is used, Subsequently, the method for producing a slurry for preparing a precision forging mold for metal according to the ninth aspect or the tenth aspect in which an acid is used in the mixed system,
- the precision of the metal according to the ninth aspect or the tenth aspect in which an aqueous solution obtained by adding an alkali to an aqueous solution of an oxyzirconium salt is used as the zirconium salt (B3) in the step (I).
- an aqueous solution obtained by adding an alkali to an aqueous solution of an oxyzirconium salt is used as the zirconium salt (B3) in the step (I).
- the zirconium salt (B3) in the step (I) an aqueous solution obtained by anion exchange of an aqueous solution of an oxyzirconium salt is used. Manufacturing method of slurry for making precision forging mold,
- the zirconium salt (B3) in the step (I) an aqueous solution obtained by adding zirconium hydroxide or zirconium carbonate to an aqueous solution of an oxyzirconium salt is used.
- a wax mold is immersed in the slurry for producing a precision forging mold according to any one of the first to fifteenth viewpoints, a stucco material is adhered to the wax mold, and a stucco material is adhered.
- This is a method for producing a precision forged metal mold by heating a wax mold to dewax and then firing the mold obtained.
- the present invention uses a stable alkaline zirconium sol and acidic zirconium sol obtained by a special production method as the inorganic binder used in the slurry for producing a precision metal mold.
- alkaline zirconium sols are produced by heating zirconium salts such as zirconium oxycarbonate in an alkaline aqueous medium containing quaternary ammonium carbonate, thereby producing gases such as amines and carbon dioxide. Hydrolysis proceeds with generation, and oxyl-coum ions are stabilized by the interaction with quaternary ammonia ions derived from carbonates of quaternary ammonia. By subjecting the hydrolyzed liquid in such a state to a hydrothermal treatment at 110 ° C. or higher, a stable alkaline zircoazole sol (A1) can be obtained.
- Said Lucaric zirconazole has a uniform particle size distribution and is used in the slurry for producing a precision mold for a metal of the present invention.
- the alkaline zircoyu sol (A2) can be obtained by mixing the alkaline zircoyuazole (A1) and the basic zirconium carbonate salt (B2) and aging these liquid media.
- Alkaline Zircoyuazole (A1) and Basic Zirconium Carbonate (B2) are converted into ZrO of ZirO of Alkaline Zircoyuazole (A1) and ZrO of Zirconium Salt (B2).
- a production method comprising a step (i ′) of mixing zircoyuazole (A1) and basic zirconium carbonate salt (B2), and a step of reacting the obtained mixed solution at 100 ° C. ( ⁇ ′). Alkaline zircoazole (2).
- the acidic zirconium sol (C3) is obtained by a method in which an alkaline zirconium sol (A3) and a zirconium salt ( ⁇ 3) are mixed and their liquid medium is hydrothermally treated.
- the alkaline zirconia sol (A3) and zirconium salt ( ⁇ 3) are converted to the solid content (As) converted to ZrO of the alkaline zirconia diol (A3) and ZrO of the zirconium salt (B3).
- An acidic zirconium sol (C3) obtained by a production method including the step (II) is a zirconia particle having a particle diameter of less than 20 nm contained in a proportion of 10 to 50% by mass in all the zirconia particles.
- the zirconia particles (b) having a particle size of less than 20 nm are contained in a proportion of 10% and 50% by mass in the total zirconia particles, and the remainder (90 to 50% by mass) is in the particle size range of 20 to 300 nm.
- the alkaline zircouazole sol (A3) used as a raw material in the step (I) is converted into zirconia particles (a) having a particle size range of 20 to 300 nm in acidic zirconia.
- Zirconium salt (B3) partially becomes zirca particles (b) with a particle diameter of less than 20 nm in acidic zircoyu sol, and the rest is covered around the raw material alkali zircosol (A3) particles.
- the resulting zirconium oxide particles (b) in the acidic zirconium sol (C3) are less than 20 nm in diameter.
- the zirconia particles (a) are contained in the particles in a proportion of 10 to 50% by mass, and the balance (90 to 50% by mass) is 20 or 300 nm.
- this acidic zirconazole (C3) has particle properties and bonding properties, the cured product of this acidic zirconazole has a large surface and small particles packed closely together, so that the adhesion to the adherend is high and the surface is high. High hardness.
- the zirconium particles present from the beginning played a role of stabilization, and the fine particle force generated by the hydrolysis of zirconium salt partially on the surface of the zirconium particles. Since it is adsorbed, it is possible to obtain a stable alkaline zircouazole sol having a high storage stability and agglomeration as compared with the case where fine particles are present.
- the resulting alkaline zirconium sol has a zirconia particle (b) having a particle size of less than 20 nm and 20 zirconia particles (a) having a particle size range of 300 nm in a well-balanced manner.
- This zirconia particle (b) has a binding property mainly derived from the zirconia particles (a) having a particle size range of 20 to 300 nm.
- This acidic zircoyu sol (C3) is used in the slurry for producing a precision forged metal mold of the present invention.
- the mold obtained by the metal precision molding mold making slurry using the alkaline zircoazole sol (A1), alkaline zirconazole (A2) or acidic zirconium sol (C3) has high stability of the slurry. Aggregation does not occur even with changes over time, and the metal produced by this mold, which does not change the slurry characteristics, has high surface smoothness.
- the first method of the present invention comprises steps (i) and 110 of heating zirconium salt (B1) to 110 ° C. in an aqueous medium containing a quaternary ammonium carbonate.
- Preparation of precision forged metal molds including the step of mixing the alkaline zirconia sol (A1) obtained by the method including the step (ii) of hydrothermal treatment at 250 ° C and the refractory powder (D) It is a manufacturing method of the slurry.
- the inorganic binder of the slurry for producing precision forged molds used in the present invention is a quaternary 60 steps of heating the zirconium salt (B1) in an aqueous medium containing sodium carbonate at 110 ° C (i) and hydrothermal treatment at 110 to 250 ° C (ii) And an alkaline zircoyu sol (A1) obtained by a production method comprising
- the alkaline zirconium sol (A1) is composed of, for example, a step of heating a zirconium salt in an aqueous medium containing a quaternary ammonium carbonate at a temperature of 110 ° C. and a temperature of 110 ° C. 25 0 And hydrothermal treatment at a temperature of ° C.
- the quaternary ammonia carbonates include (NR) CO and NR HCO.
- the quaternary ammonium ions in these quaternary ammonium carbonates include those having 1 to 18 carbon atoms, and these hydrocarbon groups are saturated or unsaturated chain formulas. Examples are hydrocarbon groups, alicyclic or aromatic cyclic hydrocarbon groups.
- examples of the saturated or unsaturated chain hydrocarbon group include a methyl group, an ethyl group, a propyl group, an isopropyl group, an octyl group, a decyl group, an octadecyl group, an ethynyl group, and a probe group.
- cyclic hydrocarbon group examples include a phenyl group, a tolyl group, a styryl group, a benzyl group, a naphthyl group, and an anthryl group.
- hydrocarbon groups having 1 to 4 carbon atoms are preferred, for example, a methyl group, an ethyl group, a propyl group, and an isopropyl group. Hydrogen tetramethyl ammonium can be suitably used.
- a carbonate containing an ammonium ion other than the quaternary ammonium ion is used, a stable zircouazole (A1) cannot be obtained.
- tertiary ammonia ions such as (C H) HN
- secondary ammonia ions such as (CH) H N
- quaternary ammonium carbonate is available in the form of an aqueous solution containing 30 to 60% by weight, especially quaternary quaternary ammonium carbonate.
- amm - ⁇ beam carbonate salt Mizusani ⁇ quaternary ammonium - solution to 44.5 mass 0/0 contained in a proportion in terms of ⁇ beam are readily available commercially.
- the concentration of quaternary ammonium carbonate can be obtained by measuring it in terms of hydroxyl group quaternary ammonia.
- zirconium salt (B1) used in the production of the alkaline zirconazole sol (Al) oxyzirconium salts such as oxyzirconium chloride and oxyzirconium carbonate are used.
- zirconium oxide (B1) is preferably zirconium zirconium carbonate.
- the step (i) for producing the alkaline zirconium sol (A1) is a step of heating at 110 ° C without adding a zirconium salt in an aqueous medium containing a quaternary ammonium carbonate.
- the pH of the aqueous medium used in the step (i) for producing the alkaline zircouazole sol (A1) is 9 to 12, in which the quaternary ammonium carbonate content is 10 to 35 mass. %.
- Zirconium salt is not present as ZrO in this aqueous medium.
- step (i) when the heating temperature is 60 ° C or less, sufficient hydrolysis does not proceed, and even if these are hydrothermally treated, a stable zircoyu sol (A1) cannot be obtained.
- step (i) when the step (i) is 110 ° C. or higher, the hydrolysis aging time is eliminated, and the direct hydrothermal treatment is not preferable.
- the time for the step (i) is usually 1 to 20 hours.
- the step (ii) of producing the alkaline zircon azole (A1) is a step of performing hydrothermal treatment at 110 to 250 ° C. after the step (i). It is not sufficient hydrothermal treatment at 110 ° C or below, and 2 At 50 ° C or higher, the size of the device becomes strong.
- This hydrothermal treatment is performed using an autoclave apparatus.
- the time for step (ii) is usually 1 to 20 hours.
- the hydrolyzate of the zirconium salt becomes zirconia particles.
- Zirconia particles obtained through this process are in the range of 20 to 300 nm by observation with a transmission electron microscope.
- the liquid obtained through the step (ii) has a pH of 8 or 12 and is alkaline. Unnecessary salts can be removed by applying the step (iii) of washing with pure water using an ultrafiltration device that can be used as a zircoyu sol (A1). Zircoazole (A1) can be obtained.
- step (iii) the way the alkaline zirconate -! Azoru (A1) is to no pH 8 12, specific surface 50 m 2 / g of ⁇ to 300m 2 / g, 30 a ⁇ to 60 3 ⁇ 4 0/0, a 2000! It has a physical property value of 10000 ⁇ SZcm and viscosity of 1 to 30 mPa's. The particle size distribution is 20! And 300nm.
- the alkaline zircoyu sol (A1) exists stably for more than 1 month at 50 ° C.
- Alkaline zircoyu sol (A1) may be optionally mixed with a water-soluble inorganic salt such as sodium hydroxide, potassium hydroxide, lithium hydroxide or ammonia, an amine such as n-propylamine, monoethanolamine or triethanolamine, or monomethyltrimethyl hydroxide.
- a water-soluble inorganic salt such as sodium hydroxide, potassium hydroxide, lithium hydroxide or ammonia, an amine such as n-propylamine, monoethanolamine or triethanolamine, or monomethyltrimethyl hydroxide.
- Additives such as water-soluble organic bases such as chilled ammonium and hydroxide tetramethyl ammonium can be contained.
- the second method of the present invention includes an alkaline zircoyu sol (A2) obtained by a method comprising a step of mixing an alkaline zircoyuazole (A1) and a basic zirconium carbonate salt (B2), and a refractory powder (D). Is a method for producing a slurry for producing a precision forged metal mold.
- This alkaline zircoyu sol (A2) is converted into ZrO of the basic zirconium carbonate (B2) and solid content (as) converted to ZrO of alkaline zirco-azole (A1).
- alkaline zircon sol (A1) a known alkaline zircon sol can be used, but the alkaline zirco sol (A1) obtained by the first method is preferably used.
- the alkaline zirconium sol (A2) used in the present invention comprises a raw material alkaline zircazole (A1) and a basic zirconium carbonate salt (B2) converted into a solid content (as) and a base converted to ZrO of the alkaline zirconia sol (A1). Converted to ZrO of water-soluble zirconium carbonate (B2)
- step ( ⁇ ') the solid content (as) converted to ZrO of the alkaline zircoyu sol (A1) and
- the basic zirconium carbonate salt (B2) of the step (i,) is composed of ammonium zirconium carbonate (NH 2) [Zr (CO 2) (OH)], potassium zirconium carbonate K [Zr (CO 2) (OH) ⁇ ,or
- zirconium carbonate ammonium may have the form (NH) [ZrO (CO)].
- the basic zirconium carbonate aqueous solution is used with ⁇ of 8-12 and concentration of 1-20% by mass.
- a method in which these basic zirconium carbonate salts (B2) are mixed with alkaline zirconium sol (A1) in an aqueous solution is preferred.
- the concentration of the aqueous solution of zirconium salt (B2) should be 1 V and 20% by mass! /.
- step (! ') of the present invention the alkaline content (as) of the alkaline zircoyu sol (A1) and the basic zirconium carbonate salt (B2) converted to ZrO of the alkaline zircoyu sol (A1) and
- Weight ratio of solid content (bs) converted to ZrO of basic zirconium carbonate (B2) bsZas is 0
- Alkaline zirconazole (A1) and basic zirconium carbonate salt (B2) aqueous solution can be mixed by adding alkaline zirconium carbonate (B2) aqueous solution to alkaline zirconium carbonate (B2) solution or alkaline zirconazole (A1). It is achieved by a method of adding an aqueous solution of basic zirconium carbonate salt (B2) or a method of mixing both at the same time.
- the weight ratio bsZas is less than 0.05, the amount of alkaline zircon azole (A1) used is increased, and there is a concern that the production cost will increase, and if it exceeds 4.0, the particle size range is less than 20 nm.
- the proportion of particles (b) increases and the stability of the sol decreases.
- the mixed solution obtained in the step ( ⁇ ′) is subjected to aging at 100 ° C. without carrying out 20 steps. This aging is 60 !, and heating at 100 ° C is more preferred! / ⁇ . This aging is preferably carried out for 0.5 to 12 hours.
- Ripening adjusts the size of the colloidal particles produced upon standing.
- the pH of the alkaline zirconium sol obtained through the step (ii ′) is 8!
- the raw material alkaline zirconia sol (A1) zirconia particles are roughly 20 in the alkaline zircouazole sol (A2) produced through step (ii '), although there is some particle growth!
- the range of zirconia particles (b) and some of them are bonded to and coated with the particles of the raw alkaline zirconia sol (A1) to form zirconia particles (a).
- the particle diameter can be confirmed using a transmission electron microscope.
- the ratio of the zirconium oxide particles (a) to the zirconium particles (b) is quantified by treating the generated alkaline zirconium sol with a centrifuge and measuring the solid content of the supernatant liquid containing the zirconium particles (b). You can do this.
- Zircoyu particles (a) can be quantified by measuring the solid content of the precipitate
- the zirconia particles (b) in the alkaline zircouazole sol (A2) have small zirconia particles that can be confirmed with an electron microscope. Forces that cannot be confirmed with an electron microscope are considered to be very small colloids of zirconium oxide. .
- the liquid containing zirconia particles (b) with a particle size of less than 20 nm is a small particle size zirconia particle or difficult to distinguish even with an electron microscope. is there. However, even if the substance is difficult to distinguish even with an electron microscope, the solution obtained by evaporating and drying the liquid can be confirmed to be acid-zirconium by X-ray diffraction. It is considered to be a very small colloid.
- Zircoyu sol with zirconia particles (a) with a particle size range of 300 nm is a single, stable force Zirconia sol with zirconia particles (b) with a particle size range of less than 20 nm and a very small colloid of zirconium oxide It is difficult to exist stably by itself, and it is easy to cause gelation in the production process.
- the surface of the zirconia particles is negatively charged on the alkali side.
- a basic zirconium carbonate salt (B2) for example, zirconium carbonate ammonium, the zirconium carbonate ion is negatively charged.
- alkaline zirconium carbonate (B) is mixed with alkaline zirconium carbonate aqueous solution and alkaline zirconium carbonate ( Both the A1) zirconium particles and the zirconium carbonate ammonium (B2) zirconium carbonate ions are stably present with a negative charge, and the mixture is aged in step ( ⁇ '), thereby producing alkalinity.
- Zircoyu particles derived from zircoyu sol (A1) and fine zircoyu particles derived from basic zirconium carbonate ammonia ( ⁇ 2) are produced.
- the minute zirconia particles are partly chemically bonded to the zirconia particles derived from the alkaline zircouazole sol (A1) by aging or heating, and the zirconia particles are bonded to and coated by the minute amount of zirconia particles. Forces that cause growth Other fine zirconia particles are also separated from the zircouore particle force derived from the alkaline zircouazole sol (A1) and exist alone in the liquid, or the fine zirconia particles are bonded together by aging or heating. Growing up.
- the obtained alkaline zircouazole sol ( ⁇ 2) has a larger particle size distribution with a wider particle size distribution than the alkaline zirconia sol (A1) used as a raw material, and a small particle zirconia force.
- Alkaline zirco-azole with zircon micro-fine colloids is present.
- the stability is low, but in the presence of large-particle zirconia according to the present invention.
- the small-sized zirconia and the alkaline zirconia sol containing zirconia micro-colloids are highly stable.
- the third method of the present invention is a method in which an alkaline zirconia sol (A3) and a zirconium salt ( ⁇ 3) are converted into ZrO of the alkaline zirconia sol (A3).
- the weight ratio BsZAs of solid content (Bs) converted to ZrO of um salt (B3) is 0.2 to 5.0.
- the acidic zirconazole sol (C3) obtained by the production method comprising the step (I) of mixing at a certain ratio and the step (II) of reacting the resulting mixture at 80 ° C. and 250 ° C., and a refractory powder (D ) And a process for producing a slurry for producing a precision forged mold for metal.
- the inorganic binder of the slurry for producing a precision forged mold used in the present invention is composed of an alkaline zircoyu sol (A3) and a zirconium salt (B3) converted to ZrO of the alkaline zircoyu sol (A3) and a solid content (As) and a zirconium salt. Solid content converted to ZrO in (B3) (Bs
- the weight ratio BsZAs is mixed at a ratio of 0.2 to 5.0 (1), and the mixed liquid obtained is reacted for 80 minutes at 250 ° C. (II). It is an acidic zirconia sol (C3) obtained by the production method.
- the acidic zirconium sol (C3) is an acidic zirconium sol (C3) containing 10 to 50 mass% of zirconium particles having a particle diameter of less than 20 nm.
- 10 zircoure particles (b) with a particle size of less than 20 nm are included in all zircoure particles! .
- the balance (90 a!, Teeth 50 mass 0/0) is 20 a!,
- step (I) the solid content (As) converted to ZrO of the alkaline zircon sol (A3) and
- Weight ratio of solid content (Bs) converted to ZrO of zirconium salt (B3) BsZAs is 0.2 to 0.2 It is preferable to mix at a ratio of 5.0, preferably 0.5 to 3.0, more preferably 0.5 to 2.5.
- alkaline zircoazole (A3) preferably an alkaline zircoazole having a pH of 8 to 12 can be used.
- This alkaline zircoyu sol (A3) is a force capable of using a known zircoyu sol
- the above-mentioned alkaline zircoyu sol (A1) can be preferably used.
- This alkaline zirconium sol (A1) can be used in the step (I) of the present invention at a pH of 8 to 12 and a concentration of 1 to 20% by mass.
- the zirconium salt (B3) is used as a zirconium salt aqueous solution or a pH-adjusted zirconium salt aqueous solution.
- Zirconium salt (B3) in the step (I) is an alkaline zirconium sol as an aqueous solution selected from the group consisting of zirconium oxychloride, zirconium oxynitrate, zirconium oxysulfate, zirconium oxyacetate, and mixtures thereof.
- A1 (B3-1) for example, oxysalt ⁇ zirconium (ZrOCl), oxynitrate
- the pH of the aqueous solution of oxyzirconium salt is 0.1 to 3.0 and the concentration is 1! It is used at 20% by mass.
- the zirconium salt (B3) in the step (I) is a catalyst used for mixing an aqueous zirconium carbonate ammonium solution and an alkaline zirconium zirconium sol (A1) as an aqueous solution containing an acid, or zirconium carbonate ammonium.
- an acid (B3-2) added to the mixed system after using it as an aqueous solution for mixing with alkaline zircouazole sol (A1).
- zirconium oxide ammonium ([? ⁇ 1) ZrO (CO)] is obtained by adding an acid to the oxy
- Zirconium carbonate ammonium [? ⁇ 1) ZrO (CO) is used as an acidic aqueous solution of zirconium salt for mixing with alkaline zirconium sol (A1).
- the method of adding an acid to the mixed system can be raised.
- acids used here include inorganic acids such as hydrochloric acid, nitric acid, sulfuric acid, formic acid, acetic acid, etc. However, it is particularly preferable to use inorganic acids such as hydrochloric acid, nitric acid, and sulfuric acid.
- zirconium carbonate ammonium - concentration ⁇ anhydrous solution is used in 1 to 15 weight 0/0.
- the pH of an acidic aqueous solution of oxyzirconium salt obtained by adding acid to zirconium carbonate ammonium is 0.1 to 4.0.
- zirconium carbonate ammonium [11) ZrO (CO)] for mixing, an acid is further added to the mixed system.
- acid addition is carried out until the pH of the mixed system falls within the range of 0.1 to 4.0.
- the zirconium salt (B3) in the step (I) is used for mixing with an alkaline zirconium sol (A1) as an aqueous solution obtained by adding an alkali to an aqueous solution of an oxyzirconium salt (B3-3),
- An acidic aqueous solution of oxyzirconium salt obtained by adding an alkali component to an aqueous solution of xyzirconium salt is used.
- the oxyzirconium salt salt used here one kind described in (B3-1) can be selected, or two or more kinds can be used in combination.
- alkaline components include water-soluble inorganic salts such as sodium hydroxide, potassium hydroxide, lithium hydroxide, and ammonia, carbonates such as sodium carbonate and potassium carbonate, monomethyltriethyl ammonium hydroxide, water, And water-soluble organic bases such as tetramethyl ammonium oxide.
- water-soluble inorganic salts such as sodium hydroxide, potassium hydroxide, lithium hydroxide, and ammonia
- carbonates such as sodium carbonate and potassium carbonate
- monomethyltriethyl ammonium hydroxide water
- water-soluble organic bases such as tetramethyl ammonium oxide.
- the pH of the aqueous solution is 0.1 to 4.0 and the concentration is 1 to 15% by mass.
- the zirconium salt (B3) in the step (I) is an oxyzirconium salt solution (B3-4) that is obtained by anion exchange of an aqueous solution of an oxyzirconium salt in an alkaline zircouazole sol (A1).
- the oxyzirconium salt used here can be selected from the one described in (B3-1) or can be used in combination of two or more. Anion exchange can be achieved by contact with an anion exchange resin.
- the zirconium salt (B3) in the step (I) is oxyzirconium Hydroxy salt in aqueous salt solution
- the oxyzirconium salt described in (B3-1) is used.
- the combined aqueous solution has a ⁇ of 0.1 to 4.0 and a concentration of 1 to 20% by mass.
- zirconium salt (B3) In the method of mixing alkaline zirconium sol (A1) and zirconium salt (B3), use of zirconium salt (B3) is not (B3-1)! Select one method from (B3 5) Alternatively, you can select several methods from (B3-1) or (B3-5) and use them in combination.
- zirconium salt (B3) is added with an alkali such as ammonia, or is treated with an ion exchange resin, or hydroxide or zirconium oxycarbonate is added (B3-3! B3-5) is used.
- the balance of oxyzirconium ion and acid ion in zirconium salt (B3) is changed by applying the above treatment (B3-2! And B3-5) to zirconium salt (B3). This accelerates the hydrolysis reaction.
- the zirconium salt obtained after the above treatment has a positive charge of oxyzirconium ions. Therefore, the pH after the treatment is preferably pH 5 or lower, preferably pH 4 or lower, more preferably pH 3 or lower.
- the pH after the treatment is preferably pH 5 or lower, preferably pH 4 or lower, more preferably pH 3 or lower.
- the weight ratio BsZBs ′ of solid content (Bs) converted to 2 2 is 1.0 to 10.0, preferably 2.0 or 10.0. Furthermore, when zirconium hydroxide (B3) is added with zirconium hydroxide or zirconium oxycarbonate and then subjected to heat treatment, the hydrolysis reaction is further promoted, which is still preferable.
- zirconium salts (B3) are in the form of an aqueous solution with alkaline zirconium sol (A1). A method of mixing is preferred.
- concentration of the aqueous solution of zirconium salt (B3) is preferably 1 to 20% by mass.
- the alkaline component (A1) and the zirconium salt (B3) are converted into ZrO of the alkaline zircoazole (A1) with a solid content (As) and a zirconium salt (B
- the weight ratio of solid content (Bs) converted to ZrO in 3) is such that BsZAs is 0.2 to 5.0.
- the mixing of the alkaline zirconium sol (A1) and the zirconium salt (B3) aqueous solution is achieved by a method of adding the alkaline zirconium sol (A1) to the aqueous zirconium salt (B3) solution.
- weight ratio BsZAs is less than 0.2, there is a concern that the amount of alkaline zircon sol (A1) used will increase and the production cost will increase, and if it exceeds 5.0, it has a particle size range of less than 20 nm. The proportion of particles (b) increases and the stability of the sol decreases.
- the mixed solution obtained in the step (I) is subjected to 80 minutes and reacted at 250 ° C. If the temperature is less than 80 ° C, the hydrothermal treatment is not sufficient, and if the temperature exceeds 250 ° C, the equipment becomes large. This hydrothermal treatment is performed using an autoclave apparatus. The process (v) is usually performed for 1 to 20 hours. Through this hydrothermal treatment, the acidic zircon sol (C3) used in the present invention is obtained.
- the pH of the acidic zircazole obtained through the step (ii) is 0.1 to 5.0, preferably 0.1 to 2.0.
- the zirconium oxide particles of the alkaline zircoazole sol (A1) have a slight particle growth, but the zirco-particles fall within the particle size range of approximately 20 to 300 ⁇ m.
- Zirconia particles (b) having a particle size range of less than 20 nm in the acidic zirconazole (C3) produced by the step (ii) of zirconium salt (B3).
- the particles of alkaline zirconia sol (A1) are coated to form zirconia particles (a). The particle diameter can be confirmed using a transmission electron microscope.
- the ratio of the zirconia particles ( a ) to the zirconia particles (b) is determined by treating the resulting acidic zircouazole sol with a centrifuge and measuring the solid content of the supernatant liquid containing zirconia particles (b). I can do it.
- Zircoyu particles (a) are solid precipitates Can be quantified by measuring minutes
- the following method may be used as a method for measuring the content of zirconia particles having a particle diameter range of less than 20 nm in acidic zirconia sol.
- the container containing the diluted solution is placed in a centrifuge (for example, product name: SRX-201, manufactured by Tomi Issei), and centrifuged at 20000 rpm for 1 hour. After centrifuging, the sample in the container is separated into two parts: an almost colorless and transparent supernatant and a white sediment. When the supernatant was observed with a transmission electron microscope, only zircoure particles of less than 20 nm were observed, and no zircoure particles of 20 nm or more were observed. Then, collect all the supernatant and measure the weight of the collected liquid.
- a centrifuge for example, product name: SRX-201, manufactured by Tomi Issei
- Zirconia particles (b) in acidic zirconium sol (C3) can be confirmed by an electron microscope, and there are also small particles of zirconia particles. Although they can not be confirmed by an electron microscope, the components are considered to be very small colloids of acid zirconium oxide.
- Acidic zirconium sol (C3) has a particle diameter range of 20 to 3 OOnm with the zirconium dioxide particles (b) having a particle diameter of less than 20 nm contained in 10 to 50% by mass in the total zirconium particles and the remainder (90 to 50% by mass).
- the liquid containing the zirconium oxide particles (b) having a particle size of less than 20 nm is a small particle size zirconium particles, or is a very small colloid of zirconium oxide, which is difficult to distinguish even with an electron microscope.
- the solution obtained by evaporating and drying the liquid can be confirmed to be acid-zirconium by X-ray diffraction. It is considered to be a very small colloid.
- Zircoyu sol with zirconia particles (a) with a particle size range of 300 nm is a single, stable force Zirconia sol with zirconia particles (b) with a particle size range of less than 20 nm and a very small colloid of zirconium oxide It is difficult to exist stably by itself, and it is easy to cause gelation in the production process. Therefore, simply mix the zirconia sol of the zirconia particles (a) in the particle size range of 20 to 300 nm with the zirconia sol of the zirconia particles (b) in the particle size range of less than 20 nm and the micro colloid of zirconium oxide. In the method, the acidic zirconazole used in the present invention should not be obtained.
- the surface of the zirconia particles is negatively charged on the alkali side.
- the zirconium salt (B3) such as zirconium oxynitrate, the oxyzirconium ion Zr0 2+ is positively charged.
- step (I) of mixing alkaline zirconium sol (A1) and zirconium oxynitrate (B3) by adding alkaline zirconium sol to a zirconium oxynitrate aqueous solution, Oxyzirconium ions Zr0 2+ of zirconium nitrate (B3) are adsorbed, and the mixed solution is hydrothermally treated in the step (ii), so that the surface of the zirconium particles derived from the alkaline zirconium sol (A1) is adsorbed. Fine zirconia particles are formed.
- Some of these minute zirconia particles chemically bond with the zirconium particles derived from alkaline zircouazole sol (A1) during the hydrothermal reaction, and the zirconia particles grow as much as they are coated.
- other fine zirconia particles are separated from the zirconia particles derived from the alkaline zircouazole sol (A 1) and exist alone in the liquid, or the fine zirconia particles are bonded together by a hydrothermal reaction. The particles grow.
- the aqueous solution of zirconium oxynitrate (B3) is an acidic aqueous solution.
- the pH decreases, and in some cases it becomes acidic, the negative charge on the surface of the zirconium oxide particles decreases, and in some cases it has a positive charge, so that the surface of the particle is oxidized by zirconium oxide (B3).
- the ability to adsorb the humic ions Zr0 2+ is reduced, it is difficult for the zirconia particles to change from oxyzirconium ions Zr0 2+ to minute zircoure particles. Since Zr + is hydrolyzed during hydrothermal reaction without being fixed to the zirconia particles, it is easy to cause gelling between minute zirconia particles and very small colloids.
- the present invention can also be achieved by a method of adding an aqueous solution of the zirconium salt (B3) to the alkaline zirconium salt (A1). That is, in order to suppress such gelation, for example, zirconia oxynitrate is added to the alkaline zircouazole sol (A1) using a blade with shearing force such as a disperser under a high rotational speed stirring condition. Acidic zirconium sol can be produced by a method of adding an aqueous solution of (B3). Addition under these conditions facilitates uniform adsorption of oxyzirconium ions Zr0 2+ on the surface of the zirconia particles, making it less likely to cause gelling of fine zirconia particles and microcolloids. .
- the obtained acidic zirconia sol has a larger particle size distribution than that of the alkaline zirconia sol used as a raw material to a small particle zirconia.
- an acidic zirconia sol in which zirconia ultrafine colloids are present in which zirconia ultrafine colloids are present.
- acidic zirconia sols consisting only of very small colloidal zirconia and very small colloids
- the stability is low, but small zirconia formed in the presence of large zirconia according to the present invention.
- Acid Zircoyu sol containing Zircoyu ultrafine colloid is highly stable! ,.
- zirconium salt (B3) in the presence of alkaline zirconia (A1), large zirconia particles (a) and small zirconia particles containing acid-zirconium ultrafine colloids (
- An acidic zirconazole (C3) used in the present invention containing b) is obtained.
- step (ii) is carried out only with an aqueous solution of the zirconium salt (B3) without using the alkaline zirconium sol (A1), a gel-like substance is produced, and a stable zirconium sol cannot be produced.
- a step (III) of desalting and concentration can be performed.
- Desalting can be performed using an ultrafiltration membrane, and it is possible to concentrate to a concentration of 10 to 40% by mass while washing with water.
- the resulting zircazole is an acidic disulfide having a pHO. 1 to 5.0, preferably 1.5 to 4.5. Lucorazole (C3).
- the acidic zircoyu sol (C3) has hydrochloric acid, nitric acid, acetic acid as a pH adjuster.
- a method for producing a slurry for producing a fine sculpture mold for a metal comprising a step of mixing an alkaline zircouazole sol (A1), an alkaline zircouazole sol (A2), or an acidic zirconia sol (C3) and a refractory powder (D) It is.
- the metal slurry for producing a forged mold can optionally contain an organic binder, a surfactant and an antifoaming agent.
- Refractory powder (D) is alumina, zircoia, fused calcia, sintering power lucia, fused calcia stabilized zircoia, fused magnesia stabilized zircoure, zircon, yttria, titania, calcium zirconate, yttria stable Zirconium oxide, mullite, ceria, lithium aluminate, lithium titanate, calcium aluminate, beryllia, calcium titanate, magnesium titanate, calcium aluminate, or a combination of two or more refractory powders are used. These refractory powders (D) have a particle size of 40 ⁇ m! And 150 ⁇ m.
- the weight ratio is 1: 5 to 1:15.
- the organic binders are polyacetate burmullon, ethylene acetate bur copolymer emulsion, polyacetate butyl maleate ester emulsion, polyacetate butyl copolymer acrylate emulsion, polyacetate burube.
- Acrylic acid emulsions such as vinyl copolymer emulsions, ethylene polyacrylate emulsions, styrene polyacrylate ester emulsions, and styrene copolymers such as styrene butadiene copolymers resin emulsions.
- Examples include cerealoses such as hemargillon, methinoresenorelose, ethinoresenoreroleole, canoleboxoxymethinoresenellose, and water-soluble polymer compounds such as polyvinyl alcohol and polyvinylpyrrolidone. It is.
- Zircoyu sol (Al, A2 or C3) solid content as ZrO and organic binder solid
- the weight ratio to the shape is 1: 0.05 to 1: 2.
- Examples of the surfactant include a non-ionic surfactant and a ionic surfactant.
- the surfactant include non-ionic surfactants such as polyoxyethylene, polyethyleneimine, and sorbitan alkyl ester. , Carboxylate, higher alcohol sulfate, polyethylene glycol ether sulfate, olefin sulfate sulfate, amide bond sulfate ester, ester bond sulfate ester, ester bond sulfonate, amide bond sulfonate, ether bond
- Examples of such surfactants include sulfonates and alkylaryl sulfonates.
- Zrcoyu sol (Al, A2 or C3) solid content as ZrO and surfactant solid content
- an alcohol-based antifoaming agent such as octanol or diethylene glycol, or a non-ionic surfactant can also be used as the antifoaming agent.
- Zircoyu sol (Al, A2 or C3) solid content as ZrO and antifoam solid content
- This slurry usually has a solid content of 75 to 90% by mass, ⁇ 3 to 11, and a viscosity of 10 to 45 seconds (measured using a cup of 4 ⁇ 4 by the Zahn cup method).
- This is a manufacturing method of metal precision forging molds.
- Stucco materials include, for example, alumina, zircoure, electrofused calcia stabilized zircoia, beryllia, electrofused calcia, sintering power Lucia, electrofused magnesia stabilized zircoia, zircon, ittria, tita, calcium zirconate, yttria stable Zirconium oxide, mullite, ceria, lithium aluminate, lithium titanate, calcium aluminate, calcium titanate, magnesium titanate, calcium aluminate, etc., one or two of these A combination of the above stucco materials can be used. These stucco materials can be used in a particle size range of V and 200 mesh.
- the wax mold with the stucco material attached can be obtained by heating it in a pressure cooker at 110 to 150 ° C for 15 minutes to 1 hour to eliminate the wax and dewaxing.
- the mold can be fired in a firing furnace and simultaneously the wax can be burned off and dewaxed.
- This ginger mold becomes a metal mold by baking for 30 minutes to 12 hours in the range of 700 to 1500 ° C.
- the metal preferably applied to the forging method using the mold obtained from the forging slurry of the present invention is an active metal, for example, metal titanium, an alloy in which aluminum is mixed with vanadium, metal Examples include metals such as magnesium and alloys obtained by mixing aluminum, cobalt, and the like with magnesium. These metals have high metal activity and easily form an oxide layer on the surface, and if the filling is performed under open conditions, an oxide layer on the metal surface called ⁇ -case is generated and the strength of the metal immediately after the penetration is reduced. Therefore, finishing is performed to remove the acid layer by methods such as cutting lj, polishing, chemical polishing, etc., but these metal oxide layers are hard and difficult to cut and polish and take time.
- a forging method using the mold obtained by the manufacturing slurry of the present invention utilizes a vacuum forging method capable of blocking oxygen and is called an ⁇ case. It is possible to select a method of filling under conditions where no oxide layer is generated.
- a metal mold that does not hinder the strength reduction of the metal even if an oxide layer on the metal surface occurs such as a metal such as iron or aluminum, is performed under open conditions. It can also be used for the swaging method.
- Example 1 An aqueous solution of tetramethylammonium hydrogen carbonate (made by Tama Chemical Industry Co., Ltd., containing 44.5% by mass in terms of hydroxide tetramethylammonium) in a 3 liter glass container Add 95 Og and 950 g of pure water to make a dilute aqueous solution. The aqueous solution was heated to 95 ° C with stirring, and then zirconyl carbonate powder (ZrOCO, manufactured by Daiichi Rare Element Chemical Co., Ltd., ZrO).
- ZrOCO zirconyl carbonate powder
- This slurry was transferred to a stainless steel autoclave container and subjected to a hydrothermal synthesis reaction at 140 ° C for 3 hours with stirring.
- the product obtained after this reaction was completely dissolved without any undissolved substance, contained 9.9% by mass as ZrO, and had a pH of 8.8. The sol is then limited.
- the sol was washed and concentrated using an external filtration device while gradually adding pure water. As a result, a high-concentration zircoyu sol having a ZrO concentration of 48.9% by mass was obtained.
- the resulting sol is
- the particle size of particles in the sol is observed, and when there is aggregation between particles, the average particle size of these aggregated particles is observed.
- alkaline silica sol manufactured by Nissan Chemical Industries, Ltd., trade name: Snowtex 30
- SiO 2 containing 30wt%
- zirconium silicate powder Karl-oxidei Matetsu
- test mold coated with the first layer was immersed in the slurry of S11, and then fused alumina particles prepared as a two-layer stucco (made by Taiheiyo Random Co., Ltd., trade name: fused alumina 50R, particle size is 1. 0 mm) was sprinkled. Then, it was dried for 3 hours in a room with a room temperature of 21 to 23 ° C and a relative humidity of 50 to 60% (preparation of the second layer).
- fused alumina particles prepared as a two-layer stucco made by Taiheiyo Random Co., Ltd., trade name: fused alumina 50R, particle size is 1. 0 mm
- mullite sand as a knock-up stucco (Kinsei Matec Co., Ltd., trade name: mullite sand, particle size is 0.7 to 1) 0mm) was sprinkled. Thereafter, it was placed in a room with a room temperature of 23 ° C and a relative humidity of 50 to 60% for 3 hours and dried (preparation of a backup layer).
- This backup layer creation process was repeated three more times, four backup layers were stacked, dried, and finally immersed in a backup slurry (S21) to coat a total of 7 layers, with a room temperature of 23 ° C, relative 7 in a room with 50-60% humidity for 24 hours to dry.
- S21 backup slurry
- the created brass-shaped brass part was heated to melt the wax and removed from the brass to obtain a green mold.
- the green mold was baked in an electric furnace at 1000 ° C for 30 minutes to make a fired mold.
- the green mold was immersed in a boiling water bath for 10 minutes and then pulled up to obtain a vertical test piece (boiled vertical mold) equivalent to a vertical mold with a steam pressure cooker.
- the strength of the green mold (raw mold specimen), fired bowl mold (fired bowl specimen), and pressure cooker equivalent bowl (boiled bowl specimen) is a bending strength tester (manufactured by Orientec Co., Ltd. Name: Tensilon, UCT-10T type).
- the stirred sol was placed in a 5 L stainless steel hydrothermal reactor equipped with a stirrer, heated to 80 ° C and held for 30 minutes. Then, pH of the cooled extraction sol 9.52, electric conductivity 33. 3MSZcm, specific gravity 1.404, as ZrO 30. 5 mass 0/0, the viscosity
- particle size by dynamic light scattering method was 103 nm.
- the particle size of particles in the sol is observed, and when there is agglomeration between particles, the average particle size of those agglomerated particles is observed.
- Purified water 383.5 g was added to alkaline zirconia sol (1230 g) prepared in the same manner as in Example 1, and 165 g of a 10 wt% nitric acid aqueous solution was added thereto while stirring.
- the mixture was further stirred for 3 hours. After stirring, the sol had a pH of 3.28 and an electrical conductivity of 2.81 mS / cm.
- the stirred sol was washed and concentrated while gradually adding pure water using an ultrafiltration device, and a high-concentration zirconia sol with a ZrO concentration of 30.9% was obtained.
- the obtained sol had a specific gravity of 1.360, a pH of 3.86, a viscosity of 2.6 mPa's, a nitric acid concentration (titration method) of 0.73% by mass, and a particle size by dynamic light scattering of 93 nm.
- the particle size of the particles in the lens is observed, and when there is aggregation between the particles, the average particle size of the aggregated particles is observed.
- the particles were confirmed with a transmission electron microscope, most of the aggregated particles were aggregated or bonded with primary particles before and after lOnm, and the size of each aggregated particle was 30 to 200 nm.
- the zirconazole was stable for more than 1 month under the condition of 50 ° C with no sediment.
- a saddle type test piece was prepared in the same manner as in Example 1 except that S13 was used for the slurry for the first layer and the second layer, and the vertical bending strength was measured.
- a concentration of zirconia sol was obtained.
- the obtained sol had a specific gravity of 1.368, a pH of 3.74, a viscosity of 5.4 mPa-s, a nitric acid concentration (titration method) of 1.67% by mass, and a particle size by dynamic light scattering of 92 ⁇ m. .
- the particle size of particles in the sol is observed, and when there is aggregation between particles, the average particle size of these aggregated particles is observed.
- the size of one piece was 30 to 200 nm.
- the zirconia sol was stable for more than 1 month at 50 ° C with no sediment.
- a saddle type test piece was prepared in the same manner as in Example 1 except that S14 was used as a slurry for the first layer and the second layer, and the vertical bending strength was measured.
- zirconium carbonate ammonium (Daiichi Rare Element Chemical Co., Ltd., trade name: Zircosol AC-20, containing 20.0% by mass as ZrO)
- Standard acid zirconia powder (Fukushima Steel Co., Ltd., trade name: Zilbon GA, # 325 mesh wand) 645g and commercially available surfactant (Nihon Freeman Co., Ltd., trade name: Victor Wet 12) 1.
- Mix 0.5g of commercial antifoaming agent (manufactured by Kanto Chemical Co., Ltd., component: 2-octanol) with 0.45g
- the first layer slurry and the second layer slurry (S15) were prepared. The viscosity of this slurry was 35.1 seconds by the Zahn cup method (measured with a No4 cup). This slurry was stable without thickening even when left in a sealed container at room temperature for 1 month.
- a saddle type test piece was prepared by performing the same operation as in Example 1 except that S15 was used for the slurry for the first layer and the second layer, and the vertical bending strength was measured.
- zirconium acetate made by Daiichi Rare Element Chemical Co., Ltd., trade name; zircosol ZA-20, containing 20.0% by mass as ZrO
- ZrO zirconium oxide
- Kowum powder (Fukushima Steel Co., Ltd., trade name: Zilbon GA, # 325 mesh under) 650g and commercially available surfactant (Nippon Freeman Co., Ltd., trade name: Victor Wet 12) 1. 05g 0.45 g of a commercially available antifoaming agent (manufactured by Kanto Chemical Co., Ltd., component: 2-octanol) was mixed to prepare slurry for the first layer and second layer (S16). The viscosity of this slurry was 34.9 seconds with Zahn Cup No4. This slurry was stable with no increase in viscosity even after standing in a sealed container at room temperature for 1 month.
- a saddle type test piece was prepared in the same manner as in Example 1 except that S16 was used for the slurry for the first layer and the second layer, and the vertical bending strength was measured.
- Table 1 shows the results of the bending strength test using the saddle type test pieces performed in Examples 1 to 4 and Comparative Examples 1 and 2.
- Comparative Example 2 4 5 2 0 7 3 Comparing Comparative Example 1 with Examples 1 and 2, the green mold strength and boiling mold strength are almost equal. The fired mold strength is higher in Examples 1 and 2 according to the present invention.
- the mold for precision fabrication obtained in the present invention uses an inert zircon on the surface in contact with the embedded metal, and therefore, such as a titanium alloy or the like in which the defect of the acid layer called alpha case is a problem. It can be used to obtain a mold for forging an active metal.
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Abstract
Description
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EP06767094A EP1920857B1 (en) | 2005-06-29 | 2006-06-21 | Processes for production of slurries and molds for precision casting |
CN200680023414XA CN101213037B (zh) | 2005-06-29 | 2006-06-21 | 精密铸造用浆液及铸模的制造方法 |
US11/922,777 US7892343B2 (en) | 2005-06-29 | 2006-06-21 | Method for manufacturing slurry and mold for precision casting |
JP2007523414A JP4831365B2 (ja) | 2005-06-29 | 2006-06-21 | 精密鋳造用スラリー及び鋳型の製造方法 |
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KR (1) | KR20080018962A (ja) |
CN (1) | CN101213037B (ja) |
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JP2010000521A (ja) * | 2008-06-20 | 2010-01-07 | Itochu Ceratech Corp | 精密鋳造用鋳型製造のためのバックアップスタッコ材及びその製造方法並びにそれを用いて得られた精密鋳造用鋳型 |
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2006
- 2006-06-21 EP EP06767094A patent/EP1920857B1/en not_active Expired - Fee Related
- 2006-06-21 US US11/922,777 patent/US7892343B2/en active Active
- 2006-06-21 JP JP2007523414A patent/JP4831365B2/ja active Active
- 2006-06-21 WO PCT/JP2006/312435 patent/WO2007000927A1/ja active Application Filing
- 2006-06-21 KR KR1020087001949A patent/KR20080018962A/ko active IP Right Grant
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- 2006-06-27 TW TW095123204A patent/TWI367795B/zh active
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Cited By (10)
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JP2009113055A (ja) * | 2007-11-02 | 2009-05-28 | Nissan Chem Ind Ltd | 精密鋳造鋳型用スラリー |
JP2010000521A (ja) * | 2008-06-20 | 2010-01-07 | Itochu Ceratech Corp | 精密鋳造用鋳型製造のためのバックアップスタッコ材及びその製造方法並びにそれを用いて得られた精密鋳造用鋳型 |
JP2012529411A (ja) * | 2009-06-12 | 2012-11-22 | トライバッハー インダストリー アーゲー | イットリアを主成分とするスラリー組成物 |
JP2014531983A (ja) * | 2011-09-30 | 2014-12-04 | ゼネラル・エレクトリック・カンパニイ | 介在物に対する改善された検出性を有する鋳造用鋳型組成物及び鋳造方法 |
JP2015534508A (ja) * | 2012-08-29 | 2015-12-03 | ゼネラル・エレクトリック・カンパニイ | チタン酸カルシウム含有鋳型組成物並びにチタン及びチタンアルミナイド合金を鋳造する方法 |
WO2014057915A1 (ja) * | 2012-10-09 | 2014-04-17 | 三菱重工業株式会社 | 精密鋳造用鋳型及びその製造方法 |
JP2014076457A (ja) * | 2012-10-09 | 2014-05-01 | Mitsubishi Heavy Ind Ltd | 精密鋳造用鋳型及びその製造方法 |
JP2015167980A (ja) * | 2014-03-07 | 2015-09-28 | 三菱重工業株式会社 | 中子材、中子、及び中子材の製造方法、中子の製造方法。 |
CN113165053A (zh) * | 2018-12-11 | 2021-07-23 | 赛峰集团 | 用于制造壳模的改进铸造浆料 |
CN113165053B (zh) * | 2018-12-11 | 2024-05-07 | 赛峰集团 | 用于制造壳模的改进铸造浆料 |
Also Published As
Publication number | Publication date |
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JPWO2007000927A1 (ja) | 2009-01-22 |
JP4831365B2 (ja) | 2011-12-07 |
EP1920857A8 (en) | 2008-10-29 |
CN101213037B (zh) | 2010-12-01 |
TWI367795B (en) | 2012-07-11 |
EP1920857A1 (en) | 2008-05-14 |
EP1920857B1 (en) | 2012-02-15 |
TW200714388A (en) | 2007-04-16 |
KR20080018962A (ko) | 2008-02-28 |
US20090032994A1 (en) | 2009-02-05 |
US7892343B2 (en) | 2011-02-22 |
CN101213037A (zh) | 2008-07-02 |
EP1920857A4 (en) | 2009-09-16 |
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