JP7228439B2 - Powder material for powder additive manufacturing and manufacturing method of model - Google Patents
Powder material for powder additive manufacturing and manufacturing method of model Download PDFInfo
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- JP7228439B2 JP7228439B2 JP2019060845A JP2019060845A JP7228439B2 JP 7228439 B2 JP7228439 B2 JP 7228439B2 JP 2019060845 A JP2019060845 A JP 2019060845A JP 2019060845 A JP2019060845 A JP 2019060845A JP 7228439 B2 JP7228439 B2 JP 7228439B2
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- powder material
- additive manufacturing
- particles
- manufacturing
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- 239000000843 powder Substances 0.000 title claims description 169
- 238000004519 manufacturing process Methods 0.000 title claims description 97
- 239000000463 material Substances 0.000 title claims description 95
- 239000000654 additive Substances 0.000 title claims description 72
- 230000000996 additive effect Effects 0.000 title claims description 72
- 239000002245 particle Substances 0.000 claims description 50
- 238000000034 method Methods 0.000 claims description 30
- 239000000919 ceramic Substances 0.000 claims description 18
- 230000009467 reduction Effects 0.000 claims description 15
- 239000002923 metal particle Substances 0.000 claims description 13
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 12
- 229910017052 cobalt Inorganic materials 0.000 claims description 11
- 239000010941 cobalt Substances 0.000 claims description 11
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 11
- 239000011164 primary particle Substances 0.000 claims description 11
- 239000011163 secondary particle Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 description 19
- 239000007789 gas Substances 0.000 description 18
- 238000005245 sintering Methods 0.000 description 15
- 238000010304 firing Methods 0.000 description 10
- 230000008018 melting Effects 0.000 description 10
- 238000002844 melting Methods 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 150000002739 metals Chemical class 0.000 description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 238000000465 moulding Methods 0.000 description 8
- 238000010894 electron beam technology Methods 0.000 description 7
- 230000003028 elevating effect Effects 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 6
- 238000007711 solidification Methods 0.000 description 6
- 230000008023 solidification Effects 0.000 description 6
- 239000011651 chromium Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- -1 zirconium oxide aluminate Chemical class 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 229910052575 non-oxide ceramic Inorganic materials 0.000 description 3
- 239000011225 non-oxide ceramic Substances 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
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- 229910052691 Erbium Inorganic materials 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 229910052735 hafnium Inorganic materials 0.000 description 2
- 229910000449 hafnium oxide Inorganic materials 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 229910003437 indium oxide Inorganic materials 0.000 description 2
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
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- 229910052574 oxide ceramic Inorganic materials 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Chemical compound [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910001887 tin oxide Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 description 1
- QIJNJJZPYXGIQM-UHFFFAOYSA-N 1lambda4,2lambda4-dimolybdacyclopropa-1,2,3-triene Chemical compound [Mo]=C=[Mo] QIJNJJZPYXGIQM-UHFFFAOYSA-N 0.000 description 1
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 description 1
- 229910052580 B4C Inorganic materials 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910039444 MoC Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910026551 ZrC Inorganic materials 0.000 description 1
- LRTTZMZPZHBOPO-UHFFFAOYSA-N [B].[B].[Hf] Chemical compound [B].[B].[Hf] LRTTZMZPZHBOPO-UHFFFAOYSA-N 0.000 description 1
- OTCHGXYCWNXDOA-UHFFFAOYSA-N [C].[Zr] Chemical compound [C].[Zr] OTCHGXYCWNXDOA-UHFFFAOYSA-N 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910000416 bismuth oxide Inorganic materials 0.000 description 1
- LGLOITKZTDVGOE-UHFFFAOYSA-N boranylidynemolybdenum Chemical compound [Mo]#B LGLOITKZTDVGOE-UHFFFAOYSA-N 0.000 description 1
- XTDAIYZKROTZLD-UHFFFAOYSA-N boranylidynetantalum Chemical compound [Ta]#B XTDAIYZKROTZLD-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 229910052576 carbides based ceramic Inorganic materials 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 description 1
- 229910052963 cobaltite Inorganic materials 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 1
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 1
- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical compound [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 description 1
- 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 1
- 238000009826 distribution Methods 0.000 description 1
- 229910001940 europium oxide Inorganic materials 0.000 description 1
- AEBZCFFCDTZXHP-UHFFFAOYSA-N europium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Eu+3].[Eu+3] AEBZCFFCDTZXHP-UHFFFAOYSA-N 0.000 description 1
- 229910052839 forsterite Inorganic materials 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910001195 gallium oxide Inorganic materials 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
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- WHJFNYXPKGDKBB-UHFFFAOYSA-N hafnium;methane Chemical compound C.[Hf] WHJFNYXPKGDKBB-UHFFFAOYSA-N 0.000 description 1
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 238000007561 laser diffraction method Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 229910003443 lutetium oxide Inorganic materials 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- UNASZPQZIFZUSI-UHFFFAOYSA-N methylidyneniobium Chemical compound [Nb]#C UNASZPQZIFZUSI-UHFFFAOYSA-N 0.000 description 1
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
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- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910000484 niobium oxide Inorganic materials 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- KJXBRHIPHIVJCS-UHFFFAOYSA-N oxo(oxoalumanyloxy)lanthanum Chemical compound O=[Al]O[La]=O KJXBRHIPHIVJCS-UHFFFAOYSA-N 0.000 description 1
- MPARYNQUYZOBJM-UHFFFAOYSA-N oxo(oxolutetiooxy)lutetium Chemical compound O=[Lu]O[Lu]=O MPARYNQUYZOBJM-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910001954 samarium oxide Inorganic materials 0.000 description 1
- 229940075630 samarium oxide Drugs 0.000 description 1
- FKTOIHSPIPYAPE-UHFFFAOYSA-N samarium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Sm+3].[Sm+3] FKTOIHSPIPYAPE-UHFFFAOYSA-N 0.000 description 1
- HYXGAEYDKFCVMU-UHFFFAOYSA-N scandium oxide Chemical compound O=[Sc]O[Sc]=O HYXGAEYDKFCVMU-UHFFFAOYSA-N 0.000 description 1
- 238000000790 scattering method Methods 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000010944 silver (metal) Substances 0.000 description 1
- 229910001923 silver oxide Inorganic materials 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910003468 tantalcarbide Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 229910003470 tongbaite Inorganic materials 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
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- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/30—Producing shaped prefabricated articles from the material by applying the material on to a core or other moulding surface to form a layer thereon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description
本発明は、粉末積層造形用粉末材料及びそれを用いる造形物の製造方法に関する。 TECHNICAL FIELD The present invention relates to a powder material for powder additive manufacturing and a manufacturing method of a model using the same.
サーメット、超硬合金で形成された工具、金型等の製作に、粉末積層造形法を用いることが検討されている。粉末積層造形用の粉末材料として、例えば特許文献１には、タングステンカーバイド（ＷＣ）の一次粒子とコバルト（Ｃｏ）の一次粒子との焼結粒子（二次粒子）で構成された粉末材料が開示されている。
また、例えば特許文献２には、減圧下において電子ビームで粉末材料を融解させて粉末積層造形法によって三次元的な造形物を製造する積層造形装置が開示されている。この積層造形装置においては、造形物にクラックが生じることを抑制するなど造形精度を向上させる目的で、造形前に粉末材料の予熱が行われる。
The use of the powder additive manufacturing method for manufacturing tools, molds, and the like made of cermet and cemented carbide has been studied. As a powder material for powder additive manufacturing, for example, Patent Document 1 discloses a powder material composed of sintered particles (secondary particles) of primary particles of tungsten carbide (WC) and primary particles of cobalt (Co). It is
Further, for example, Patent Literature 2 discloses a layered modeling apparatus that melts a powder material with an electron beam under reduced pressure and manufactures a three-dimensional modeled object by a powder layered modeling method. In this layered modeling apparatus, the powder material is preheated before modeling for the purpose of improving modeling accuracy, such as suppressing the occurrence of cracks in the modeled object.
しかしながら、特許文献２に開示の積層造形装置を用いて造形物を製造しようとすると、予熱によって粉末材料からガスが発生して十分な減圧ができず、造形を行うことができない場合があった。この原因は、粉末材料に添加したバインダーに由来する有機成分が予熱によって分解して二酸化炭素が生成するためであった。
本発明は、造形前に予熱を行ってもガスが生成しにくく減圧下で粉末積層造形法によって造形物を製造することが可能な粉末積層造形用粉末材料及び造形物の製造方法を提供することを課題とする。
However, when an attempt is made to manufacture a modeled object using the layered modeling apparatus disclosed in Patent Document 2, there are cases where gas is generated from the powder material due to preheating and sufficient pressure reduction cannot be achieved, making it impossible to model. This was because the organic component derived from the binder added to the powder material was decomposed by preheating to generate carbon dioxide.
The present invention provides a powder material for powder additive manufacturing and a method for producing a model, which makes it difficult for gas to be generated even if preheating is performed before modeling, and which enables a model to be manufactured by a powder additive manufacturing method under reduced pressure. is the subject.
本発明の一態様に係る粉末積層造形用粉末材料は、粉末積層造形法によって造形物を製造するための粉末材料であって、複数の一次粒子が結合してなる二次粒子を含有し、１１００℃、２．５時間との条件で熱処理した場合の質量減少率が０．０２質量％以下であることを要旨とする。
本発明の他の態様に係る造形物の製造方法は、上記の一態様に係る粉末積層造形用粉末材料を用いて粉末積層造形法によって造形物を製造することを要旨とする。
A powder material for powder additive manufacturing according to one aspect of the present invention is a powder material for producing a modeled object by a powder additive manufacturing method, and contains secondary particles formed by bonding a plurality of primary particles, and 1100 C. for 2.5 hours, the mass reduction rate is 0.02% by mass or less.
A gist of a method for manufacturing a modeled object according to another aspect of the present invention is to manufacture a modeled object by a powder additive manufacturing method using the powder material for powder additive manufacturing according to the above aspect.
本発明によれば、造形前に予熱を行ってもガスが生成しにくく減圧下で粉末積層造形法によって造形物を製造することが可能である。 According to the present invention, even if preheating is performed before modeling, gas is less likely to be generated, and it is possible to manufacture a modeled object by the powder additive manufacturing method under reduced pressure.
本発明の一実施形態について詳細に説明する。なお、以下の実施形態は本発明の一例を示したものであって、本発明は本実施形態に限定されるものではない。また、以下の実施形態には種々の変更又は改良を加えることが可能であり、その様な変更又は改良を加えた形態も本発明に含まれ得る。 An embodiment of the present invention will be described in detail. In addition, the following embodiment shows an example of the present invention, and the present invention is not limited to this embodiment. In addition, various modifications or improvements can be added to the following embodiments, and forms with such modifications or improvements can also be included in the present invention.
本実施形態の粉末積層造形用粉末材料は、粉末積層造形法によって造形物を製造するための粉末材料であって、複数の一次粒子が結合してなる二次粒子を含有し、１１００℃、２．５時間との条件で熱処理した場合の質量減少率が０．０２質量％以下である。
粉末積層造形用粉末材料は、例えば、セラミック粒子、金属粒子等の粒子にバインダーを添加して造粒することにより製造される場合があるが、前述した予熱などの加熱によりバインダーから熱分解ガス、揮発ガス等のガスが発生する場合がある。例えば、バインダーが分解して二酸化炭素、有機成分ガス等の熱分解ガスが発生する場合がある。
The powder material for powder additive manufacturing of the present embodiment is a powder material for manufacturing a modeled object by a powder additive manufacturing method, and contains secondary particles formed by bonding a plurality of primary particles. The mass reduction rate is 0.02% by mass or less when heat-treated for 0.5 hours.
The powder material for powder additive manufacturing may be produced, for example, by adding a binder to particles such as ceramic particles and metal particles and granulating them. Gases such as volatile gas may be generated. For example, the binder may decompose to generate thermal decomposition gas such as carbon dioxide and organic component gas.
本実施形態の粉末積層造形用粉末材料は、１１００℃、２．５時間との条件で熱処理した場合の質量減少率が０．０２質量％以下であるので、造形前に予熱を行ったとしても、粉末積層造形用粉末材料から熱分解ガス、揮発ガス等のガスが発生しにくい。そのため、本実施形態の粉末積層造形用粉末材料は、十分に減圧をすることができ、減圧下で粉末積層造形法による造形を行うことができるので、クラックが少ないなど造形精度が高い造形物を製造することができる。 The powder material for powder additive manufacturing of the present embodiment has a mass reduction rate of 0.02% by mass or less when heat-treated under the conditions of 1100 ° C. and 2.5 hours, so even if preheating is performed before modeling , gases such as pyrolysis gas and volatilization gas are less likely to be generated from the powder material for powder additive manufacturing. Therefore, the powder material for powder additive manufacturing of the present embodiment can be sufficiently decompressed, and modeling by the powder additive manufacturing method can be performed under reduced pressure. can be manufactured.
本実施形態の粉末積層造形用粉末材料においては、質量減少率を測定する際の上記熱処理の条件は１１００℃、２．５時間であるが、熱処理の温度は１１００℃以上であれば他の温度とすることもできる。ただし、熱処理の温度は、１５００℃以下であることが好ましく、１３００℃以下であることがより好ましく、１２００℃以下であることがさらに好ましい。 In the powder material for powder additive manufacturing of the present embodiment, the heat treatment conditions for measuring the mass reduction rate are 1100 ° C. and 2.5 hours, but if the heat treatment temperature is 1100 ° C. or higher, other temperatures can also be However, the heat treatment temperature is preferably 1500° C. or lower, more preferably 1300° C. or lower, and even more preferably 1200° C. or lower.
また、熱処理の時間は２．５時間以上とすることもできる。ただし、熱処理の時間は、２４時間以下であることが好ましく、１２時間以下であることがより好ましく、６時間以下であることがさらに好ましい。
さらに、熱処理による質量減少率は低い方がより好ましいので、０．０１５質量％以下であることがより好ましく、０．０１質量％以下であることがさらに好ましい。
さらに、熱処理時の圧力は特に限定されるものではなく、常圧下で熱処理を行ってもよいし、減圧下で熱処理を行ってもよい。
Also, the heat treatment time can be set to 2.5 hours or more. However, the heat treatment time is preferably 24 hours or less, more preferably 12 hours or less, and even more preferably 6 hours or less.
Furthermore, since the mass reduction rate due to heat treatment is preferably low, it is more preferably 0.015% by mass or less, and even more preferably 0.01% by mass or less.
Furthermore, the pressure during the heat treatment is not particularly limited, and the heat treatment may be performed under normal pressure or under reduced pressure.
本実施形態の粉末積層造形用粉末材料を用いて粉末積層造形法によって造形を行えば、種々の立体形状の造形物を製造することが可能である。例えば、工作を行うための種々の工具（例えば切削工具）や、成形を行うための種々の金型や、治具等の種々の部品を、本実施形態の粉末積層造形用粉末材料を用いた粉末積層造形法によって製造することが可能である。 If the powder material for powder additive manufacturing of the present embodiment is used for modeling by the additive additive manufacturing method, it is possible to manufacture various three-dimensional shaped objects. For example, various tools for working (for example, cutting tools), various molds for molding, various parts such as jigs, etc., are manufactured using the powder material for powder additive manufacturing of the present embodiment. It can be manufactured by powder additive manufacturing.
本実施形態における粉末積層造形法としては、例えば、レーザー粉体肉盛り法（レーザーメタルデポジション法；ＬＭＤ）、選択的レーザー溶融法（セレクトレーザーメルティング法；ＳＬＭ）、電子ビーム溶融法（エレクトロンビームメルティング法；ＥＢＭ）等のビーム照射方式が挙げられる。特に電子ビーム溶融法は、造形時に減圧が必要となるので、本実施形態の粉末積層造形用粉末材料を好適に使用することができる。 Examples of the powder additive manufacturing method in the present embodiment include a laser powder build-up method (laser metal deposition method; LMD), a selective laser melting method (select laser melting method; SLM), an electron beam melting method (electron A beam irradiation method such as a beam melting method (EBM) can be used. In particular, the electron beam melting method requires decompression during modeling, so the powder material for powder additive manufacturing of the present embodiment can be preferably used.
レーザーメタルデポジション法とは、具体的には、構造物の所望の部位に粉末材料を提供して、そこにレーザー光を照射することで粉末材料を溶融・凝固させ、当該部位に肉盛りを行う技術である。この手法を利用することで、例えば、構造物に摩耗等の物理的な劣化が発生した場合に、当該劣化部位に粉末材料として当該構造物を構成する材料又は補強材料等を供給し、その粉末材料を溶融・凝固させることで劣化部位等に肉盛りを行うことができる。 Specifically, the laser metal deposition method involves providing a powder material to a desired part of a structure, irradiating it with a laser beam to melt and solidify the powder material, and building up the part. It is a technique to do. By using this method, for example, when physical deterioration such as wear occurs in a structure, a material constituting the structure or a reinforcing material is supplied as a powder material to the deteriorated part, and the powder By melting and solidifying the material, it is possible to build up the deteriorated portion.
セレクトレーザーメルティング法とは、設計図から作成したスライスデータに基づき、粉末材料を堆積させた粉末層にレーザー光を走査させ、粉末層を所望形状に溶融・凝固する操作を、１断面（１スライスデータ）ごとに繰り返して積層させることで、三次元的な構造体を造形する技術である。
エレクトロンビームメルティング法とは、３Ｄ ＣＡＤデータから作成したスライスデータを基に、電子ビームを用いて上記粉末層を選択的に溶融・凝固させ、積層することで、３次元的な構造体を造形する技術である。
The select laser melting method is based on the slice data created from the design drawing, scanning the laser beam on the powder layer on which the powder material is deposited, and melting and solidifying the powder layer into a desired shape. It is a technology that forms a three-dimensional structure by repeatedly stacking each slice data).
The electron beam melting method is based on slice data created from 3D CAD data, and uses an electron beam to selectively melt and solidify the above powder layers, layering them to form a three-dimensional structure. It is a technology to
本実施形態の粉末積層造形用粉末材料の種類は特に限定されるものではなく、例えば、セラミック粒子、金属粒子等が挙げられるが、複数の一次粒子が結合してなる二次粒子を含有すればよく、例えば、セラミック粒子と金属粒子の焼結体からなる焼結粒子を含有してもよい。詳述すると、本実施形態の粉末積層造形用粉末材料は、セラミック粒子（一次粒子）と金属粒子（一次粒子）とを焼結して得られた焼結体からなる焼結粒子（二次粒子）を含有してもよい。 The type of the powder material for powder additive manufacturing of the present embodiment is not particularly limited, and examples thereof include ceramic particles and metal particles. It may contain, for example, sintered particles comprising a sintered body of ceramic particles and metal particles. More specifically, the powder material for powder additive manufacturing of the present embodiment is a sintered body obtained by sintering ceramic particles (primary particles) and metal particles (primary particles). ) may contain.
セラミック粒子と金属粒子とを焼結して焼結体からなる焼結粒子を得る方法は、特に限定されるものではなく、一般的な焼結方法を採用可能であるが、例えば、プラズマアトマイズ法等のアトマイズ法、溶射法、高周波誘導熱プラズマ法を用いることにより、焼結体からなる焼結粒子を得ることができる。 The method of sintering ceramic particles and metal particles to obtain sintered particles made of a sintered body is not particularly limited, and a general sintering method can be employed. Sintered particles made of a sintered body can be obtained by using an atomizing method, a thermal spraying method, or a high-frequency induction thermal plasma method.
セラミック粒子の種類は特に限定されるものではないが、酸化物系セラミックの粒子や非酸化物系セラミックの粒子が挙げられる。
酸化物系セラミックとしては、例えば、以下に示す金属の酸化物が挙げられる。すなわち、金属としては、Ｂ、Ｓｉ、Ｇｅ、Ｓｂ、Ｂｉ等の半金属元素、Ｍｇ、Ｃａ、Ｓｒ、Ｂａ、Ｚｎ、Ａｌ、Ｇａ、Ｉｎ、Ｓｎ、Ｐｂ等の典型元素、Ｓｃ、Ｙ、Ｔｉ、Ｚｒ、Ｈｆ、Ｖ、Ｎｂ、Ｔａ、Ｃｒ、Ｍｏ、Ｗ、Ｍｎ、Ｆｅ、Ｃｏ、Ｎｉ、Ｃｕ、Ａｇ、Ａｕ等の遷移金属元素、Ｌａ、Ｃｅ、Ｐｒ、Ｎｄ、Ｓｍ、Ｅｒ、Ｌｕ等のランタノイド元素から選択される１種又は２種以上の金属が挙げられる。これらの金属の中でも、Ｍｇ、Ｙ、Ｔｉ、Ｚｒ、Ｃｒ、Ｍｎ、Ｆｅ、Ｚｎ、Ａｌ、Ｅｒから選択される１種又は２種以上の金属が好ましい。
The type of ceramic particles is not particularly limited, but examples include particles of oxide ceramics and particles of non-oxide ceramics.
Examples of oxide-based ceramics include oxides of the following metals. That is, metals include semimetal elements such as B, Si, Ge, Sb, and Bi; typical elements such as Mg, Ca, Sr, Ba, Zn, Al, Ga, In, Sn, and Pb; , Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Ag, Au transition metal elements, La, Ce, Pr, Nd, Sm, Er, Lu, etc. and one or more metals selected from lanthanoid elements. Among these metals, one or more metals selected from Mg, Y, Ti, Zr, Cr, Mn, Fe, Zn, Al, and Er are preferred.
酸化物系セラミックとしては、より具体的には、例えば、アルミナ、ジルコニア、イットリア、クロミア、チタニア、コバルタイト、マグネシア、シリカ、カルシア、セリア、フェライト、スピネル、ジルコン、酸化ニッケル、酸化銀、酸化銅、酸化亜鉛、酸化ガリウム、酸化ストロンチウム、酸化スカンジウム、酸化サマリウム、酸化ビスマス、酸化ランタン、酸化ルテチウム、酸化ハフニウム、酸化バナジウム、酸化ニオブ、酸化タングステン、マンガン酸化物、酸化タンタル、酸化テルピウム、酸化ユーロピウム、酸化ネオジウム、酸化スズ、酸化アンチモン、アンチモン含有酸化スズ、酸化インジウム、スズ含有酸化インジウム、酸化ジルコニウムアルミネート、酸化ジルコニウムシリケート、酸化ハフニウムアルミネート、酸化ハフニウムシリケート、酸化チタンシリケート、酸化ランタンシリケート、酸化ランタンアルミネート、酸化イットリウムシリケート、酸化チタンシリケート、酸化タンタルシリケート等が挙げられる。 More specifically, oxide ceramics include, for example, alumina, zirconia, yttria, chromia, titania, cobaltite, magnesia, silica, calcia, ceria, ferrite, spinel, zircon, nickel oxide, silver oxide, copper oxide, Zinc oxide, gallium oxide, strontium oxide, scandium oxide, samarium oxide, bismuth oxide, lanthanum oxide, lutetium oxide, hafnium oxide, vanadium oxide, niobium oxide, tungsten oxide, manganese oxide, tantalum oxide, terpium oxide, europium oxide, oxide Neodymium, tin oxide, antimony oxide, antimony-containing tin oxide, indium oxide, tin-containing indium oxide, zirconium oxide aluminate, zirconium oxide silicate, hafnium oxide aluminate, hafnium silicate oxide, titanium oxide silicate, lanthanum silicate oxide, lanthanum aluminum oxide silicate, yttrium oxide silicate, titanium oxide silicate, tantalum silicate oxide and the like.
また、非酸化物系セラミックとしては、例えば、炭化タングステン（タングステンカーバイド）、炭化クロム、炭化バナジウム、炭化ニオブ、炭化モリブデン、炭化タンタル、炭化チタン、炭化ジルコニウム、炭化ハフニウム、炭化ケイ素、炭化ホウ素等の炭化物系セラミックや、ホウ化モリブデン、ホウ化クロム、ホウ化ハフニウム、ホウ化ジルコニウム、ホウ化タンタル、ホウ化チタン等のホウ化物系セラミックや、窒化ホウ素、窒化チタン、窒化ケイ素、窒化アルミニウム等の窒化物系セラミックが挙げられる。 Examples of non-oxide ceramics include tungsten carbide, chromium carbide, vanadium carbide, niobium carbide, molybdenum carbide, tantalum carbide, titanium carbide, zirconium carbide, hafnium carbide, silicon carbide, boron carbide, and the like. Carbide-based ceramics, boride-based ceramics such as molybdenum boride, chromium boride, hafnium boride, zirconium boride, tantalum boride, and titanium boride, and nitrides such as boron nitride, titanium nitride, silicon nitride, and aluminum nitride material ceramics.
さらに、非酸化物系セラミックとしては、例えば、フオルステライト、ステアタイト、コーディエライト、ムライト、チタン酸バリウム、チタン酸鉛、チタン酸ジルコン酸鉛、Ｍｎ－Ｚｎフェライト、Ｎｉ－Ｚｎフェライト、サイアロン等の複合化物や、ハイドロキシアパタイト、リン酸カルシウム等のリン酸化合物が挙げられる。
これらのセラミックは、いずれか１種を単独で使用してもよいし、２種以上を組み合わせて使用してもよい。また、これらのセラミックの中では、炭化タングステンが特に好ましい。
Furthermore, non-oxide ceramics include, for example, forsterite, steatite, cordierite, mullite, barium titanate, lead titanate, lead zirconate titanate, Mn--Zn ferrite, Ni--Zn ferrite, and sialon. and phosphate compounds such as hydroxyapatite and calcium phosphate.
Any one of these ceramics may be used alone, or two or more thereof may be used in combination. Among these ceramics, tungsten carbide is particularly preferred.
金属粒子の種類は特に限定されるものではないが、マグネシウム（Ｍｇ）、アルミニウム（Ａｌ）、チタン（Ｔｉ）、クロム（Ｃｒ）、マンガン（Ｍｎ）、鉄（Ｆｅ）、コバルト（Ｃｏ）、ニッケル（Ｎｉ）、銅（Ｃｕ）、亜鉛（Ｚｎ）、ジルコニウム（Ｚｒ）、金（Ａｕ）、銀（Ａｇ）、白金（Ｐｔ）、イリジウム（Ｉｒ）、ビスマス（Ｂｉ）、ニオブ（Ｎｉ）、モリブデン（Ｍｏ）、錫（Ｓｎ）、タングステン（Ｗ）、鉛（Ｐｂ）等の金属の粒子や、これらの金属のうち２種以上の金属の合金の粒子が挙げられる。
これらの金属は、いずれか１種を単独で使用してもよいし、２種以上を組み合わせて使用してもよい。また、これらの金属の中では、コバルトが特に好ましい。
Although the types of metal particles are not particularly limited, magnesium (Mg), aluminum (Al), titanium (Ti), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), zirconium (Zr), gold (Au), silver (Ag), platinum (Pt), iridium (Ir), bismuth (Bi), niobium (Ni), molybdenum Particles of metals such as (Mo), tin (Sn), tungsten (W), and lead (Pb), and particles of alloys of two or more of these metals can be used.
Any one of these metals may be used alone, or two or more thereof may be used in combination. Among these metals, cobalt is particularly preferred.
セラミック粒子と金属粒子の焼結体からなる焼結粒子においては、セラミック粒子と金属粒子との質量比は特に限定されるものではなく、粉末積層造形用粉末材料の使用目的や使用条件に応じて任意に設定することができる。また、本発明の目的が達成される範囲内の量であれば、第３の成分を添加剤としてセラミック粒子及び金属粒子に添加して、焼結体としてもよい。さらに、粉末積層造形用粉末材料は、セラミック粒子、金属粒子、焼結粒子等を含有していれば、樹脂の粒子、添加剤の粒子等の他の粒子をさらに含有していてもよい。 In the sintered particles composed of a sintered body of ceramic particles and metal particles, the mass ratio of the ceramic particles and the metal particles is not particularly limited, and depends on the purpose and conditions of use of the powder material for powder additive manufacturing. Can be set arbitrarily. In addition, the third component may be added as an additive to the ceramic particles and metal particles to form a sintered body, as long as the amount is within the range where the object of the present invention is achieved. Furthermore, the powder material for powder additive manufacturing may further contain other particles such as resin particles and additive particles as long as it contains ceramic particles, metal particles, sintered particles and the like.
セラミック粒子及び金属粒子の平均粒子径（平均一次粒子径）は特に限定されるものではなく、粉末積層造形用粉末材料の使用目的や使用条件に応じて任意に設定することができる。また、焼結体からなる焼結粒子の平均粒子径（平均二次粒子径）も同様に特に限定されるものではなく、粉末積層造形用粉末材料の使用目的や使用条件に応じて任意に設定することができる。 The average particle size (average primary particle size) of the ceramic particles and metal particles is not particularly limited, and can be arbitrarily set according to the intended use and use conditions of the powder material for powder additive manufacturing. Similarly, the average particle size (average secondary particle size) of the sintered particles made of the sintered body is not particularly limited, and can be set arbitrarily according to the purpose and conditions of use of the powder material for powder additive manufacturing. can do.
＜粉末積層造形用粉末材料の製造方法＞
本実施形態の粉末積層造形用粉末材料の製造方法は、１１００℃、２．５時間との条件で熱処理した場合の質量減少率が０．０２質量％以下であるならば、特に限定されるものではないが、粉末積層造形用粉末材料の製造工程中のいずれかの工程（例えば最終工程）に焼成工程を有する方法により、使用時に加熱されてもガスが発生しにくい粉末積層造形用粉末材料を製造することができる。
<Method for producing powder material for powder additive manufacturing>
The method for producing the powder material for powder additive manufacturing of the present embodiment is particularly limited as long as the mass reduction rate is 0.02% by mass or less when heat-treated under the conditions of 1100 ° C. for 2.5 hours. However, a powder material for powder additive manufacturing that does not easily generate gas even when heated during use is produced by a method that includes a firing step in one of the processes (for example, the final process) during the manufacturing process of the powder material for additive additive manufacturing. can be manufactured.
加熱により熱分解ガス、揮発ガス等のガスを発生させ得る物質（例えば、粉末積層造形用粉末材料を製造する際に添加されるバインダー）を、焼成工程における加熱によって予め除去すれば、使用時に加熱されてもガスが発生しにくい粉末積層造形用粉末材料を製造することができる。
あるいは、本実施形態の粉末積層造形用粉末材料が焼結により製造される場合には、焼結工程において、熱分解ガス、揮発ガス等のガスを発生させ得る物質を除去可能な条件（加熱温度及び加熱時間）で焼結を行うことにより、使用時に加熱されてもガスが発生しにくい粉末積層造形用粉末材料を製造することができる。
Substances that can generate gases such as pyrolysis gas and volatile gas by heating (for example, binders added when manufacturing powder materials for powder additive manufacturing) are removed in advance by heating in the firing process, so that they can be heated at the time of use. It is possible to manufacture a powder material for powder additive manufacturing that does not easily generate gas even if it is heated.
Alternatively, when the powder material for powder additive manufacturing of the present embodiment is produced by sintering, in the sintering process, conditions (heating temperature and heating time), it is possible to produce a powder material for powder additive manufacturing that does not easily generate gas even when heated during use.
焼成工程における焼成条件及び焼結工程における焼結条件は、粉末積層造形用粉末材料を１１００℃、２．５時間との条件で熱処理した場合の質量減少率が０．０２質量％以下となる条件に設定する必要がある。焼成条件及び焼結条件は、１１００℃且つ２４時間以上であることが好ましく、１１５０℃且つ１２時間以上であることがより好ましく、１２００℃且つ６時間以上であることがさらに好ましい。 The firing conditions in the firing step and the sintering conditions in the sintering step are conditions in which the mass reduction rate when the powder material for powder additive manufacturing is heat treated at 1100 ° C. for 2.5 hours is 0.02% by mass or less. must be set to The firing conditions and sintering conditions are preferably 1100° C. and 24 hours or longer, more preferably 1150° C. and 12 hours or longer, and even more preferably 1200° C. and 6 hours or longer.
なお、上記のような焼成条件での焼成や焼結条件での焼結を行わなくても、１１００℃、２．５時間との条件で熱処理した場合の質量減少率が０．０２質量％以下となる場合には、上記のような焼成条件での焼成や焼結条件での焼結を行う必要はない。すなわち、焼成工程を有しない製造方法で粉末積層造形用粉末材料を製造してもよいし、通常の焼結条件で焼結を行う製造方法で粉末積層造形用粉末材料を製造してもよい。 Even without firing under the firing conditions or sintering under the sintering conditions as described above, the mass reduction rate is 0.02% by mass or less when heat treated at 1100 ° C. for 2.5 hours. In that case, it is not necessary to perform firing under the firing conditions or sintering under the sintering conditions described above. That is, the powder material for powder additive manufacturing may be manufactured by a manufacturing method that does not have a firing step, or the powder material for powder additive manufacturing may be manufactured by a manufacturing method that performs sintering under normal sintering conditions.
＜造形物の製造方法＞
本実施形態の粉末積層造形用粉末材料を用いて粉末積層造形法によって三次元的な造形物を製造する方法は、例えば、次のような方法がある。図１は粉末積層造形のための積層造形装置の一例の簡略図を示しており、大まかな構成として、積層造形が行われる空間である積層エリア１０と、粉末材料を貯留しておくストック１２と、積層エリア１０への粉末材料の供給を補助するワイパ１１と、粉末材料を固化するための固化手段（電子銃、レーザー発振器等）１３と、を備えている。
<Manufacturing method of model>
Examples of the method for manufacturing a three-dimensional model by the powder additive manufacturing method using the powder material for powder additive manufacturing of the present embodiment include the following methods. FIG. 1 shows a simplified diagram of an example of a layered manufacturing apparatus for powder layered manufacturing, and as a rough configuration, a
積層エリア１０は、典型的には、外周が囲まれた造形空間を造形面より下方に有し、この造形空間内に昇降可能な昇降テーブル１４を備えている。この昇降テーブル１４は、所定厚みΔｔ１ずつ降下することができ、この昇降テーブル１４上に目的の造形物を造形してゆく。ストック１２は、積層エリア１０の傍に配置され、例えば、外周が囲まれた貯留空間内に、シリンダー等によって昇降可能な底板（昇降テーブル）を備えている。底板が上昇することで、所定量の粉末材料を造形面に供給（押し出し）することができる。
The stacking
このような積層造形装置では、昇降テーブル１４を造形面より所定厚みΔｔ１だけ下げた状態で積層エリア１０へ粉末材料層２０を供給することで、所定厚みΔｔ１の粉末材料層２０を用意することができる。このとき、造形面にワイパ１１を走査させることで、ストック１２から押し出された粉末材料を積層エリア１０上に供給するとともに、粉末材料の表面を平坦化して、均質な粉末材料層２０を形成することができる。そして、例えば、形成された第１層目の粉末材料層２０に対し、第１層目のスライスデータに対応した固化領域にのみ、固化手段１３を介して熱源を与えることで、粉末材料を所望の断面形状に焼結又は接合等し、第１層目の粉末固化層２１を形成することができる。
In such a layered modeling apparatus, the
この後、昇降テーブル１４を所定厚みΔｔ１だけ下げて積層エリア１０へ再度粉末材料を供給し、ワイパ１１でならすことで第２層目の粉末材料層２０を形成する。そしてこの粉末材料層２０の第２層目のスライスデータに対応した固化領域にのみ、固化手段１３を介して熱源を与えて粉末材料を固化させて第２層目の粉末固化層２１を形成する。このとき、第２層目の粉末固化層２１と、下層である第１層目の粉末固化層２１とが一体化されて、第２層目までの積層体を形成する。
Thereafter, the elevating table 14 is lowered by a predetermined thickness Δt1, the powder material is supplied again to the stacking
引き続き、昇降テーブル１４を所定厚みΔｔ１だけ下降させて積層エリア１０へ新たな粉末材料層２０を形成し、固化手段１３を介して熱源を与えて所要箇所を粉末固化層２１とする、との工程を、所望の回数繰り返す。これにより、複数層の粉末固化層２１が積層され一体化されてなる積層体が形成され、目的とする三次元的な造形物を製造することができる。
Subsequently, the elevating table 14 is lowered by a predetermined thickness Δt1 to form a new
なお、粉末材料を固化する方法としては、電子ビーム、レーザー光等の照射により熱を与えて粉末材料を溶融固化する方法などが選択される。具体的には、粉末材料を固化するための固化手段が電子銃である場合は、例えば熱電子放出型の電子銃や電界放射型の電子銃を固化手段として好適に用いることができる。また、粉末材料を固化するための固化手段がレーザー発振器である場合は、例えば炭酸ガスレーザーやＹＡＧレーザーを固化手段として好適に用いることができる。 As a method for solidifying the powder material, a method of melting and solidifying the powder material by applying heat by irradiation with an electron beam, a laser beam, or the like is selected. Specifically, when the solidification means for solidifying the powder material is an electron gun, for example, a thermionic emission electron gun or a field emission electron gun can be suitably used as the solidification means. Further, when the solidification means for solidifying the powder material is a laser oscillator, for example, a carbon dioxide laser or a YAG laser can be suitably used as the solidification means.
〔実施例〕
以下に実施例及び比較例を示し、本発明をさらに具体的に説明する。
平均一次粒子径２μｍの炭化タングステン粒子と平均一次粒子径２μｍのコバルト粒子の焼結体からなる焼結粒子の集合体である実施例及び比較例の粉末（粉末積層造形用粉末材料）を製造した。一次粒子の平均粒子径はレーザー回折・散乱法により測定することができる。例えば、株式会社堀場製作所製のレーザー回折／散乱式粒子径分布測定装置ＬＡ－３００を用いて測定することができる。
〔Example〕
EXAMPLES Examples and comparative examples are shown below to describe the present invention more specifically.
Powders (powder materials for powder additive manufacturing) of Examples and Comparative Examples, which are aggregates of sintered particles composed of sintered bodies of tungsten carbide particles having an average primary particle diameter of 2 μm and cobalt particles having an average primary particle diameter of 2 μm, were produced. . The average particle size of primary particles can be measured by a laser diffraction/scattering method. For example, it can be measured using a laser diffraction/scattering particle size distribution analyzer LA-300 manufactured by Horiba, Ltd.
比較例の粉末積層造形用粉末材料は、炭化タングステン粒子とコバルト粒子と有機バインダーの混合粉末を、ボトムスプレー方式の噴霧流動造粒機にて造粒し、１２５０℃、常圧で２．５時間焼結した後に、解砕、分級することにより製造した。炭化タングステン粒子とコバルト粒子の混合比は、炭化タングステン粒子８８質量％に対しコバルト粒子１２質量％とした。 The powder material for powder additive manufacturing of the comparative example is obtained by granulating a mixed powder of tungsten carbide particles, cobalt particles and an organic binder with a bottom spray fluidized bed granulator, followed by granulating at 1250° C. and normal pressure for 2.5 hours. It was produced by crushing and classifying after sintering. The mixing ratio of the tungsten carbide particles and the cobalt particles was 88% by mass of the tungsten carbide particles and 12% by mass of the cobalt particles.
実施例の粉末積層造形用粉末材料は、炭化タングステン粒子とコバルト粒子と有機バインダーの混合粉末を、ボトムスプレー方式の噴霧流動造粒機にて造粒し、１２５０℃、常圧で２．５時間焼結し解砕したものを、さらに１１００℃、常圧で２４時間焼結した後に、解砕、分級することにより製造した。炭化タングステン粒子とコバルト粒子の混合比は、炭化タングステン粒子８８質量％に対しコバルト粒子１２質量％とした。 The powder materials for powder additive manufacturing of Examples are obtained by granulating a mixed powder of tungsten carbide particles, cobalt particles and an organic binder with a bottom spray fluidized bed granulator, followed by granulating at 1250° C. and normal pressure for 2.5 hours. The sintered and pulverized product was further sintered at 1100° C. and normal pressure for 24 hours, and then pulverized and classified. The mixing ratio of the tungsten carbide particles and the cobalt particles was 88% by mass of the tungsten carbide particles and 12% by mass of the cobalt particles.
実施例及び比較例の粉末積層造形用粉末材料に対して、それぞれ熱処理を施し、熱処理前後での質量減少率（単位は％）を測定した。実施例、比較例ともに、２０ｇの粉末積層造形用粉末材料を熱処理に供した。熱処理の条件は１１００℃、常圧、２．５時間である。質量減少率は、熱処理前の粉末積層造形用粉末材料の質量から熱処理後の粉末積層造形用粉末材料の質量を差し引き、それを熱処理前の粉末積層造形用粉末材料の質量で除することにより求めることができる。測定の結果、実施例の粉末積層造形用粉末材料の質量減少率は０．００１質量％であるのに対して、比較例の粉末積層造形用粉末材料の質量減少率は０．０６４質量％であった。 The powder materials for powder additive manufacturing of Examples and Comparative Examples were each subjected to heat treatment, and the mass reduction rate (unit: %) before and after the heat treatment was measured. In both examples and comparative examples, 20 g of the powder material for powder additive manufacturing was subjected to heat treatment. The heat treatment conditions are 1100° C., normal pressure, and 2.5 hours. The mass reduction rate is obtained by subtracting the mass of the powder material for additive manufacturing after heat treatment from the mass of the powder material for additive manufacturing before heat treatment and dividing the result by the mass of the powder material for additive manufacturing before heat treatment. be able to. As a result of the measurement, the mass reduction rate of the powder material for powder additive manufacturing of the example was 0.001% by mass, while the mass reduction rate of the powder material for powder additive manufacturing of the comparative example was 0.064 mass%. there were.
次に、実施例及び比較例の粉末積層造形用粉末材料を用いて、それぞれ粉末積層造形法によって造形物を製造した。造形物の製造には、特許文献２に開示の積層造形装置に類似の積層造形装置を用いた。すなわち、この積層造形装置においては、造形前に粉末積層造形用粉末材料の予熱を１０００℃で行った後に、減圧下において電子ビームで粉末積層造形用粉末材料を融解させて粉末積層造形法によって三次元的な造形物を製造するようになっている。 Next, using the powder materials for powder additive manufacturing of Examples and Comparative Examples, molded objects were manufactured by the additive additive manufacturing method. A layered modeling apparatus similar to the layered modeling apparatus disclosed in Patent Document 2 was used to manufacture the modeled object. That is, in this layered manufacturing apparatus, after preheating the powder material for layered powder manufacturing at 1000° C. before modeling, the powder material for layered powder manufacturing is melted with an electron beam under reduced pressure, and the powder layered manufacturing method is used to perform a third step. It is designed to manufacture original moldings.
その結果、実施例の粉末積層造形用粉末材料を用いた場合には、予熱によって粉末材料からガスが発生することがほとんどないので、十分な減圧を行うことができ、上記積層造形装置によって造形物を問題なく製造することができた。これに対して、比較例の粉末積層造形用粉末材料を用いた場合には、予熱によって粉末材料から二酸化炭素等のガスが発生したため、十分な減圧を行うことができず、上記積層造形装置によって造形物を製造することができなかった。 As a result, when the powder material for powder additive manufacturing of the example is used, gas is hardly generated from the powder material by preheating, so sufficient decompression can be performed, and the article can be manufactured by the additive manufacturing apparatus. could be produced without any problems. On the other hand, when the powder material for powder additive manufacturing of the comparative example was used, gas such as carbon dioxide was generated from the powder material by preheating, so that sufficient pressure reduction could not be performed, and the additive manufacturing apparatus described above could not be used. It was not possible to produce a model.
１３・・・固化手段
２０・・・粉末材料層
２１・・・粉末固化層
13 Solidifying
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