WO2006118157A1 - 金属製造保護ガス - Google Patents
金属製造保護ガス Download PDFInfo
- Publication number
- WO2006118157A1 WO2006118157A1 PCT/JP2006/308766 JP2006308766W WO2006118157A1 WO 2006118157 A1 WO2006118157 A1 WO 2006118157A1 JP 2006308766 W JP2006308766 W JP 2006308766W WO 2006118157 A1 WO2006118157 A1 WO 2006118157A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ether
- magnesium
- composition according
- protective gas
- fluorine
- Prior art date
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 title description 4
- 239000002184 metal Substances 0.000 title description 4
- 239000011777 magnesium Substances 0.000 claims abstract description 43
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 42
- 239000007789 gas Substances 0.000 claims abstract description 37
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 24
- 238000002485 combustion reaction Methods 0.000 claims abstract description 18
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 15
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011737 fluorine Substances 0.000 claims abstract description 13
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000003647 oxidation Effects 0.000 claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 11
- 239000012159 carrier gas Substances 0.000 claims abstract description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 18
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- CDOOAUSHHFGWSA-OWOJBTEDSA-N (e)-1,3,3,3-tetrafluoroprop-1-ene Chemical compound F\C=C\C(F)(F)F CDOOAUSHHFGWSA-OWOJBTEDSA-N 0.000 claims description 4
- DMUPYMORYHFFCT-UPHRSURJSA-N (z)-1,2,3,3,3-pentafluoroprop-1-ene Chemical compound F\C=C(/F)C(F)(F)F DMUPYMORYHFFCT-UPHRSURJSA-N 0.000 claims description 4
- NDMMKOCNFSTXRU-UHFFFAOYSA-N 1,1,2,3,3-pentafluoroprop-1-ene Chemical compound FC(F)C(F)=C(F)F NDMMKOCNFSTXRU-UHFFFAOYSA-N 0.000 claims description 4
- FXRLMCRCYDHQFW-UHFFFAOYSA-N 2,3,3,3-tetrafluoropropene Chemical compound FC(=C)C(F)(F)F FXRLMCRCYDHQFW-UHFFFAOYSA-N 0.000 claims description 4
- ZASBKNPRLPFSCA-UHFFFAOYSA-N 2-(difluoromethoxy)-1,1,1-trifluoroethane Chemical compound FC(F)OCC(F)(F)F ZASBKNPRLPFSCA-UHFFFAOYSA-N 0.000 claims description 4
- 229920001774 Perfluoroether Polymers 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- MSSNHSVIGIHOJA-UHFFFAOYSA-N pentafluoropropane Chemical compound FC(F)CC(F)(F)F MSSNHSVIGIHOJA-UHFFFAOYSA-N 0.000 claims description 4
- GCDWNCOAODIANN-UHFFFAOYSA-N 1,1,1,2,2-pentafluoro-2-methoxyethane Chemical compound COC(F)(F)C(F)(F)F GCDWNCOAODIANN-UHFFFAOYSA-N 0.000 claims description 3
- CXJWJJZGJZNBRK-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoro-2-(1,1,1,3,3,3-hexafluoropropan-2-yloxy)propane Chemical compound FC(F)(F)C(C(F)(F)F)OC(C(F)(F)F)C(F)(F)F CXJWJJZGJZNBRK-UHFFFAOYSA-N 0.000 claims description 3
- DPYMFVXJLLWWEU-UHFFFAOYSA-N desflurane Chemical compound FC(F)OC(F)C(F)(F)F DPYMFVXJLLWWEU-UHFFFAOYSA-N 0.000 claims description 3
- 229960003537 desflurane Drugs 0.000 claims description 3
- CHRXLMMVJKAYGJ-UHFFFAOYSA-N difluoro(fluoromethoxy)methane Chemical group FCOC(F)F CHRXLMMVJKAYGJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000003570 air Substances 0.000 claims description 2
- VNKYTQGIUYNRMY-UHFFFAOYSA-N methoxypropane Chemical compound CCCOC VNKYTQGIUYNRMY-UHFFFAOYSA-N 0.000 claims description 2
- HRXXERHTOVVTQF-UHFFFAOYSA-N 1,1,1,2,3,3,3-heptafluoro-2-methoxypropane Chemical compound COC(F)(C(F)(F)F)C(F)(F)F HRXXERHTOVVTQF-UHFFFAOYSA-N 0.000 claims 1
- 229910000838 Al alloy Inorganic materials 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims 1
- 150000005219 trimethyl ethers Chemical class 0.000 claims 1
- 230000000007 visual effect Effects 0.000 description 7
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 description 6
- QQONPFPTGQHPMA-UHFFFAOYSA-N Propene Chemical class CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 4
- 125000004430 oxygen atom Chemical group O* 0.000 description 4
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 description 3
- YQQHEHMVPLLOKE-UHFFFAOYSA-N 1,1,2,2-tetrafluoro-1-methoxyethane Chemical compound COC(F)(F)C(F)F YQQHEHMVPLLOKE-UHFFFAOYSA-N 0.000 description 3
- NPNPZTNLOVBDOC-UHFFFAOYSA-N 1,1-difluoroethane Chemical compound CC(F)F NPNPZTNLOVBDOC-UHFFFAOYSA-N 0.000 description 3
- FDMFUZHCIRHGRG-UHFFFAOYSA-N 3,3,3-trifluoroprop-1-ene Chemical compound FC(F)(F)C=C FDMFUZHCIRHGRG-UHFFFAOYSA-N 0.000 description 3
- 229910015900 BF3 Inorganic materials 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 3
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 3
- QKCGXXHCELUCKW-UHFFFAOYSA-N n-[4-[4-(dinaphthalen-2-ylamino)phenyl]phenyl]-n-naphthalen-2-ylnaphthalen-2-amine Chemical compound C1=CC=CC2=CC(N(C=3C=CC(=CC=3)C=3C=CC(=CC=3)N(C=3C=C4C=CC=CC4=CC=3)C=3C=C4C=CC=CC4=CC=3)C3=CC4=CC=CC=C4C=C3)=CC=C21 QKCGXXHCELUCKW-UHFFFAOYSA-N 0.000 description 3
- GTLACDSXYULKMZ-UHFFFAOYSA-N pentafluoroethane Chemical compound FC(F)C(F)(F)F GTLACDSXYULKMZ-UHFFFAOYSA-N 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- JRHMNRMPVRXNOS-UHFFFAOYSA-N trifluoro(methoxy)methane Chemical compound COC(F)(F)F JRHMNRMPVRXNOS-UHFFFAOYSA-N 0.000 description 3
- NOPJRYAFUXTDLX-UHFFFAOYSA-N 1,1,1,2,2,3,3-heptafluoro-3-methoxypropane Chemical compound COC(F)(F)C(F)(F)C(F)(F)F NOPJRYAFUXTDLX-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 125000001153 fluoro group Chemical group F* 0.000 description 2
- SGAMQLNREKTWEK-UHFFFAOYSA-N fluoro(fluoromethoxy)methane Chemical compound FCOCF SGAMQLNREKTWEK-UHFFFAOYSA-N 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 231100000053 low toxicity Toxicity 0.000 description 2
- 125000000446 sulfanediyl group Chemical group *S* 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- -1 1, 2, 2, 2-tetrafluoroethyl Chemical group 0.000 description 1
- RIQRGMUSBYGDBL-UHFFFAOYSA-N 1,1,1,2,2,3,4,5,5,5-decafluoropentane Chemical compound FC(F)(F)C(F)C(F)C(F)(F)C(F)(F)F RIQRGMUSBYGDBL-UHFFFAOYSA-N 0.000 description 1
- MXDAVJPHYVHHEG-UHFFFAOYSA-N 1,1,1,2,3,3,3-heptafluoro-2-[[2,3,3,3-tetrafluoro-2-(trifluoromethyl)propoxy]methyl]propane Chemical compound FC(F)(F)C(F)(C(F)(F)F)COCC(F)(C(F)(F)F)C(F)(F)F MXDAVJPHYVHHEG-UHFFFAOYSA-N 0.000 description 1
- UDKWMTKIRQSDHF-UHFFFAOYSA-N 1,1,1,2-tetrafluoro-2-(trifluoromethoxy)ethane Chemical compound FC(F)(F)C(F)OC(F)(F)F UDKWMTKIRQSDHF-UHFFFAOYSA-N 0.000 description 1
- VVWFZKBKXPXGBH-UHFFFAOYSA-N 1,1,1,3,3-pentachloropropane Chemical compound ClC(Cl)CC(Cl)(Cl)Cl VVWFZKBKXPXGBH-UHFFFAOYSA-N 0.000 description 1
- LQULIUZHPYVUHG-UHFFFAOYSA-N 1,1,1-trifluoro-2-(fluoromethoxy)ethane Chemical compound FCOCC(F)(F)F LQULIUZHPYVUHG-UHFFFAOYSA-N 0.000 description 1
- QAERDLQYXMEHEB-UHFFFAOYSA-N 1,1,3,3,3-pentafluoroprop-1-ene Chemical compound FC(F)=CC(F)(F)F QAERDLQYXMEHEB-UHFFFAOYSA-N 0.000 description 1
- 125000004206 2,2,2-trifluoroethyl group Chemical group [H]C([H])(*)C(F)(F)F 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- MCWPMXPNJVZOTP-UHFFFAOYSA-N 2,3-dihydro-1,4-benzodioxin-5-ylboronic acid Chemical compound O1CCOC2=C1C=CC=C2B(O)O MCWPMXPNJVZOTP-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- ZJNSNLGAFDATPK-UHFFFAOYSA-N 2-(3-aminopyridin-4-yl)acetic acid Chemical compound NC1=CN=CC=C1CC(O)=O ZJNSNLGAFDATPK-UHFFFAOYSA-N 0.000 description 1
- XXZCIYUJYUESMD-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-3-(morpholin-4-ylmethyl)pyrazol-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C(=NN(C=1)CC(=O)N1CC2=C(CC1)NN=N2)CN1CCOCC1 XXZCIYUJYUESMD-UHFFFAOYSA-N 0.000 description 1
- ZRPAUEVGEGEPFQ-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]pyrazol-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C=NN(C=1)CC(=O)N1CC2=C(CC1)NN=N2 ZRPAUEVGEGEPFQ-UHFFFAOYSA-N 0.000 description 1
- 125000003682 3-furyl group Chemical group O1C([H])=C([*])C([H])=C1[H] 0.000 description 1
- HCFAJYNVAYBARA-UHFFFAOYSA-N 4-heptanone Chemical compound CCCC(=O)CCC HCFAJYNVAYBARA-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical group COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 241000609816 Pantholops hodgsonii Species 0.000 description 1
- 239000005935 Sulfuryl fluoride Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- IYRWEQXVUNLMAY-UHFFFAOYSA-N carbonyl fluoride Chemical compound FC(F)=O IYRWEQXVUNLMAY-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 125000001028 difluoromethyl group Chemical group [H]C(F)(F)* 0.000 description 1
- NJOZRVFCNPTFKP-UHFFFAOYSA-N difluoromethyl hypofluorite Chemical compound FOC(F)F NJOZRVFCNPTFKP-UHFFFAOYSA-N 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 150000002221 fluorine Chemical class 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical compound FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 125000006340 pentafluoro ethyl group Chemical group FC(F)(F)C(F)(F)* 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- IEPMHPLKKUKRSX-UHFFFAOYSA-J silicon(4+);tetrafluoride Chemical compound [F-].[F-].[F-].[F-].[Si+4] IEPMHPLKKUKRSX-UHFFFAOYSA-J 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- OBTWBSRJZRCYQV-UHFFFAOYSA-N sulfuryl difluoride Chemical compound FS(F)(=O)=O OBTWBSRJZRCYQV-UHFFFAOYSA-N 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
- B22D21/002—Castings of light metals
- B22D21/007—Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
- B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere
- B22D21/04—Casting aluminium or magnesium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D46/00—Controlling, supervising, not restricted to casting covered by a single main group, e.g. for safety reasons
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C19/00—Acyclic saturated compounds containing halogen atoms
- C07C19/01—Acyclic saturated compounds containing halogen atoms containing chlorine
Definitions
- the present invention relates to a protective gas for preventing oxidation and combustion of molten magnesium Z magnesium alloy.
- the present invention also relates to a method for preventing oxidation and combustion of molten magnesium or a magnesium alloy.
- molten magnesium and a magnesium alloy react vigorously with oxygen in the air to form an oxide and burn it.
- a method of applying a protective flux on the molten metal a method of protecting with an inert gas such as helium, argon or nitrogen, or a method of covering with a protective gas is adopted. ing.
- GWP global warming potential
- Patent Document 2 published US2003Z034094
- Patent Document 3 published US2003Z0164068
- Patent Document 4 Japanese Patent Laid-Open No. 2004-276116 include perfluoroketone as a protective gas, hydrogenated Ketones and mixtures thereof, specifically pentafluoroethyl heptaflu Illustrated is propylpropylketone (CF (CO) CF).
- Patent Document 5 USP1972
- 317 includes boron trifluoride (BF), tetrafluoride silicon (SiF), nitrogen trifluoride (NF) and
- Patent Document 1 Japanese Translation of Special Publication 2002-541999
- Patent Document 2 US2003Z0034094 Published Specification
- Patent Document 3 US2003Z0164068 Published Specification
- Patent Document 4 Japanese Patent Laid-Open No. 2004-276116
- Patent Document 5 US 1972317 Specification
- the object of the present invention is to provide an effective protective gas for preventing combustion due to extreme acid and soot in the production of magnesium and magnesium alloys, having a low global warming potential, an impact on the environment, low toxicity, and It is to provide a novel incombustible composition and a method using them.
- the present inventors have studied various kinds of fluorine-containing organic compounds, and found a protective gas composition having a relatively low GWP and a low toxicity and incombustibility, and achieved the present invention. did.
- a protective gas composition comprising a fluorine-containing organic compound and a carrier gas, which is effective in preventing combustion due to a rapid acidification upon contact with molten magnesium or a magnesium alloy.
- the above gas composition is used as a protective gas for preventing oxidation and combustion of molten magnesium or a magnesium alloy in the production of magnesium or a magnesium alloy.
- a method for preventing rapid oxidation and combustion of molten magnesium or magnesium alloy is provided.
- a protective gas composition such as a fluorine-containing organic compound and a carrier gas of the present invention
- a low-toxic and decomposable toxic gas having a relatively low GWP as compared with conventional protective gases.
- This is a gas composition that protects molten magnesium and magnesium alloy, which reduces the environmental load, and can improve safety during work.
- the fluorine-containing organic compound used in the present invention is a
- the GWP is much less than 1,000, which is much less desirable. From this point of view, it is difficult to say that HFC-125, HFC-134a, HFC-227ea, etc. are preferable because of their relatively large GWP. Although HFC-152a and HFC-32 have low GWP, these compounds have low effective F content in the molecule and high flammability, which makes it difficult to prevent and handle molten magnesium or magnesium alloys. It is hard to say that it is preferable. In addition, although high protective effects can be expected, the health of workers and safety power during use Toxicities such as BF, SiF, NF and SOF
- the protective film is initially made of magnesium oxide (MgO)
- 1, 1, 1, 3, 3-pentafluorolob mouth pan which has a relatively small GWP and a relatively large F content in the molecule, 3, 3, 3, 3—tetrafluoropropene, methyl 1, 1, 2, 2—tetrafluoroether, and the like were selected.
- a compound having a relatively low boiling point and easily vaporized at room temperature is desired.
- the boiling point and GWP can be expected to decrease due to the presence of unsaturated bonds in the molecule.
- the double bond in the molecule is preferable because the affinity to metal Mg is higher than that of the saturated fluorine-containing hydrocarbon, and the fluorine atom is broken and the effect is exhibited at a lower concentration.
- fluorinated propene with a double bond in the molecule and a relatively high F content is preferred.
- difluoromethyl fluorether includes oxygen atoms in such molecules and has a relatively low boiling point and is easily vaporized at room temperature.
- Fluoromethyl ether bisdifluoromethyl ether, methylpentafluoroethyl ether, 1, 2, 2, 2-tetrafluoroethyl trifluoromethyl ether, 2, 2, 2-trifluoroethyl trifluor Trifluoromethyl, difluoromethyl 1, 2, 2, 2-tetrafluoroethyl ether, difluoromethyl 2, 2, 2-trifluoroethyl ether, 1 trifluoromethyl-2, 2, 2-trifluoroethyl Ether, 1-trifluoromethyl-1,2,2,2-tetrafluoroethylmethyl ether, 1,1,1,2,2,3,3 heptafluoro-3-methoxypropane, etc. Can be mentioned.
- 1, 1, 1, 3, 3 Pentafluoropropane can be obtained, for example, by fluorinating 1, 1, 1, 3, 3 pentachloropropane bread in two stages with anhydrous hydrofluoric acid.
- 1, 3, 3, 3—Tetrafluoropropene can be obtained by treating 1, 1, 1, 3, 3 pentafluoropropane with potassium hydroxide, etc. It can be obtained by fluorinating lopropene in the gas phase in the presence of a catalyst.
- a hydrated fluoroether can be produced by adding an alcohol to fluoroolefin in the presence of a base catalyst.
- methyl 1, 1, 2, 2-tetrafluoroethyl ether is It can be obtained by adding methanol to tetrafluoroethylene in the presence of a base catalyst.
- 1,2,3,3,3-pentafluoropropene was obtained by hydrogenation and de-HF from readily available hexafluoropropene. It is known that 2,3,3,3-tetrafluoropropene can be obtained by de-HF (I. L. Knunyants et al., IZv. Akad. Nauk SSSR, 1960, pl312).
- the fluorine-containing organic compound is a gas at room temperature or is desired to be easily vaporized.
- the boiling point of each compound of the present invention is 1, 1, 1, 3, 3-pentafluoropropane (15 ° C), 1, 3, 3, 3-tetrafluoropropene (-16.C), methyl 1,1,2,2-terafluoroethyl ether methyl (37 ° C).
- These fluorine-containing organic compounds can be used alone or in combination.
- an inert gas is selected, and air, carbon dioxide, argon, nitrogen, and a mixture thereof are preferable. It is particularly desirable to mix incombustible carrier gases such as carbon dioxide, argon and nitrogen when using hydrated fluoroethers such as methyl 1, 1, 2, 2-tetrafluoroethyl ether. Better ,.
- the concentration of the fluorine-containing organic compound in the carrier gas is preferably 0.005 to 10% by volume, and preferably 0.01 to 5% by volume. If the concentration of the fluorine-containing organic compound is too low, it is difficult to obtain a protective effect, and if it is excessive, decomposition products derived from the protective gas increase, adversely affecting magnesium or magnesium alloys, and adversely affecting the work environment. However, it is not desirable because it may be effective.
- the protective gas of the present invention is used by adjusting the concentration in advance and maintaining it as it is, or by adjusting the flow rate of each of the protective gases to the target concentration and continuously circulating the molten magnesium or magnesium alloy. can do.
- Example 1 [0025] 1 of 0.1 volume 0/0 to the top of the magnesium of a crucible furnace containing the magnesium 50 g, 1, 1, 3, while supplying the 3-penta full O b propane Z dry air mixed gas lOmlZ min, The crucible furnace was heated to 700 ° C to melt the magnesium. As a result of visual observation, an upper film was formed, and intense combustion was not observed.
- the protective gas is methyl trifluoromethyl ether, difluoromethyl fluoromethyl ether, bisdifluoromethyl ether, methyl pentafluoroethyl ether, 1, 2, 2, 2-tetrafluoroethyl trifluor.
- Example 3 was conducted except that the sample was made of oro 3-methoxypropane. With the exception of methyl trifluoromethyl ether, a film was formed on the upper surface of the molten magnesium by visual observation, and vigorous combustion was not observed. The results are summarized in Table 1.
- Example 8 1, 2, 2, 2— ⁇ trifluoroethyl fluoromethyl ether O
- Example 9 2, 2, 2-trifluoro Tiltrifluormethyl ether O
- Example 10 Difluoromethyl 1, 2, 2, 2— ⁇ trafluoroethyl ether O
- Example 1 Difluoromethyl 2, 2, 2_trifluoroethyl ether ⁇
- Example 12 1 Trifluoromethyl-2,2,2-trifluoroethyl ether ⁇
- Example 1 3 1 Trifluoromethyl-1, 2, 2, 2-tetrafluoromethyl ether O
- Example 14 1, 1, 1, 2, 2, 3, 3—Heptafluoro-3-methoxypropane O
- the crucible furnace was heated to 700 ° C. with dry air flowing over the top of magnesium in the crucible furnace containing 10 g of magnesium at lOmlZ. In this case, intense and burning of magnesium was observed with heating.
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- Mechanical Engineering (AREA)
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Abstract
Description
Claims
Priority Applications (5)
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CA2598351A CA2598351C (en) | 2005-04-27 | 2006-04-26 | Protective gas for metal production |
US11/884,734 US20080163956A1 (en) | 2005-04-27 | 2006-04-26 | Protective Gas For Metal Production |
EP06732372A EP1867413B1 (en) | 2005-04-27 | 2006-04-26 | Protective gas for metal production |
CN2006800082382A CN101142043B (zh) | 2005-04-27 | 2006-04-26 | 防止熔融的镁或镁合金快速氧化或燃烧的保护气体组合物及方法 |
US12/824,637 US8016911B2 (en) | 2005-04-27 | 2010-06-28 | Use of a protective gas composition for preventing oxidation or combustion of molten magnesium |
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JP2005129530 | 2005-04-27 | ||
JP2005-129530 | 2005-04-27 | ||
JP2006112025A JP4627045B2 (ja) | 2005-04-27 | 2006-04-14 | 金属製造保護ガス |
JP2006-112025 | 2006-04-14 |
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US11/884,734 A-371-Of-International US20080163956A1 (en) | 2005-04-27 | 2006-04-26 | Protective Gas For Metal Production |
US12/824,637 Division US8016911B2 (en) | 2005-04-27 | 2010-06-28 | Use of a protective gas composition for preventing oxidation or combustion of molten magnesium |
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US (2) | US20080163956A1 (ja) |
EP (1) | EP1867413B1 (ja) |
JP (1) | JP4627045B2 (ja) |
KR (1) | KR100979606B1 (ja) |
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Cited By (3)
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WO2007063674A1 (ja) * | 2005-12-01 | 2007-06-07 | Central Glass Company, Limited | マグネシウム/マグネシウム合金製造保護ガス組成物および燃焼防止方法 |
WO2008086872A1 (en) * | 2007-01-15 | 2008-07-24 | Rivoira S.P.A. | Inert atmosphere for light metal alloys melting systems and method and system for melting said alloys with the use of said inert atmosphere |
JP2010095782A (ja) * | 2008-10-20 | 2010-04-30 | Central Glass Co Ltd | マグネシウム又はマグネシウム合金の溶湯防燃ガス組成物の供給方法および供給システム |
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US20080003127A1 (en) * | 2006-07-03 | 2008-01-03 | Honeywell International Inc. | Non-Ferrous Metal Cover Gases |
US20100242677A1 (en) * | 2006-07-03 | 2010-09-30 | Honeywell International Inc. | Non-ferrous metal cover gases |
JP2008173665A (ja) * | 2007-01-18 | 2008-07-31 | Nagaoka Univ Of Technology | 溶融マグネシウム/マグネシウム合金の燃焼を防止する保護ガス組成物および溶融マグネシウム/マグネシウム合金の燃焼防止方法 |
JP5056559B2 (ja) * | 2008-04-17 | 2012-10-24 | セントラル硝子株式会社 | 溶融マグネシウム/マグネシウム合金の保護ガス組成物 |
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JP2004009110A (ja) * | 2002-06-07 | 2004-01-15 | Sumitomo Metal Ind Ltd | マグネシウム合金の連続鋳造方法 |
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WO2007063674A1 (ja) * | 2005-12-01 | 2007-06-07 | Central Glass Company, Limited | マグネシウム/マグネシウム合金製造保護ガス組成物および燃焼防止方法 |
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JP2010095782A (ja) * | 2008-10-20 | 2010-04-30 | Central Glass Co Ltd | マグネシウム又はマグネシウム合金の溶湯防燃ガス組成物の供給方法および供給システム |
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CN101142043B (zh) | 2010-05-19 |
JP2006326682A (ja) | 2006-12-07 |
US20080163956A1 (en) | 2008-07-10 |
US20100263489A1 (en) | 2010-10-21 |
EP1867413A1 (en) | 2007-12-19 |
CA2598351A1 (en) | 2006-11-09 |
KR100979606B1 (ko) | 2010-09-01 |
KR20070112293A (ko) | 2007-11-22 |
EP1867413B1 (en) | 2012-08-22 |
CN101142043A (zh) | 2008-03-12 |
US8016911B2 (en) | 2011-09-13 |
EP1867413A4 (en) | 2009-04-01 |
JP4627045B2 (ja) | 2011-02-09 |
CA2598351C (en) | 2012-05-22 |
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