JP2003514112A - Improved metallurgical powder composition and method of making and using the same - Google Patents
Improved metallurgical powder composition and method of making and using the sameInfo
- Publication number
- JP2003514112A JP2003514112A JP2001535624A JP2001535624A JP2003514112A JP 2003514112 A JP2003514112 A JP 2003514112A JP 2001535624 A JP2001535624 A JP 2001535624A JP 2001535624 A JP2001535624 A JP 2001535624A JP 2003514112 A JP2003514112 A JP 2003514112A
- Authority
- JP
- Japan
- Prior art keywords
- iron
- powder
- weight
- metallurgical
- powder composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000843 powder Substances 0.000 title claims abstract description 282
- 239000000203 mixture Substances 0.000 title claims abstract description 143
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 151
- 229910000640 Fe alloy Inorganic materials 0.000 claims abstract description 69
- 229910052742 iron Inorganic materials 0.000 claims abstract description 59
- 238000005275 alloying Methods 0.000 claims abstract description 58
- 229910052751 metal Inorganic materials 0.000 claims abstract description 58
- 239000002184 metal Substances 0.000 claims abstract description 58
- 239000000654 additive Substances 0.000 claims abstract description 46
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 43
- 230000000996 additive effect Effects 0.000 claims abstract description 26
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 9
- 239000010439 graphite Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 63
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 39
- 229910052750 molybdenum Inorganic materials 0.000 claims description 39
- 239000011733 molybdenum Substances 0.000 claims description 39
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 29
- 239000010949 copper Substances 0.000 claims description 28
- 229910052802 copper Inorganic materials 0.000 claims description 27
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 24
- 229910052799 carbon Inorganic materials 0.000 claims description 23
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- 229910052759 nickel Inorganic materials 0.000 claims description 12
- 239000011651 chromium Substances 0.000 claims description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 8
- 229910001182 Mo alloy Inorganic materials 0.000 claims description 8
- -1 vanadine Substances 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- CADICXFYUNYKGD-UHFFFAOYSA-N sulfanylidenemanganese Chemical compound [Mn]=S CADICXFYUNYKGD-UHFFFAOYSA-N 0.000 claims description 7
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052721 tungsten Inorganic materials 0.000 claims description 7
- 239000010937 tungsten Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- DSMZRNNAYQIMOM-UHFFFAOYSA-N iron molybdenum Chemical compound [Fe].[Fe].[Mo] DSMZRNNAYQIMOM-UHFFFAOYSA-N 0.000 claims 4
- 239000002245 particle Substances 0.000 description 25
- 239000011230 binding agent Substances 0.000 description 23
- 239000000314 lubricant Substances 0.000 description 23
- KWUUWVQMAVOYKS-UHFFFAOYSA-N iron molybdenum Chemical compound [Fe].[Fe][Mo][Mo] KWUUWVQMAVOYKS-UHFFFAOYSA-N 0.000 description 18
- 238000003754 machining Methods 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 150000001875 compounds Chemical class 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 9
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 6
- 238000005245 sintering Methods 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 239000001993 wax Substances 0.000 description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 239000007767 bonding agent Substances 0.000 description 4
- 238000012937 correction Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000000280 densification Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 238000005272 metallurgy Methods 0.000 description 4
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 4
- 239000010955 niobium Substances 0.000 description 4
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 239000004014 plasticizer Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-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
- 230000008859 change Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910001096 P alloy Inorganic materials 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910002056 binary alloy Inorganic materials 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical class [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 235000012343 cottonseed oil Nutrition 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000002356 laser light scattering Methods 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 239000011135 tin Substances 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 2
- YPFNIPKMNMDDDB-UHFFFAOYSA-K 2-[2-[bis(carboxylatomethyl)amino]ethyl-(2-hydroxyethyl)amino]acetate;iron(3+) Chemical compound [Fe+3].OCCN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O YPFNIPKMNMDDDB-UHFFFAOYSA-K 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229910000521 B alloy 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
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 238000006085 Schmidt reaction Methods 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 238000006836 Ueno reaction Methods 0.000 description 1
- 229920006103 Verton® Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BLRUBJIXUVIYEA-UHFFFAOYSA-N [Mn].[Fe].[Mo] Chemical compound [Mn].[Fe].[Mo] BLRUBJIXUVIYEA-UHFFFAOYSA-N 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 229920003086 cellulose ether Polymers 0.000 description 1
- 239000012461 cellulose resin Substances 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 239000002385 cottonseed oil Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- ZJOLCKGSXLIVAA-UHFFFAOYSA-N ethene;octadecanamide Chemical compound C=C.CCCCCCCCCCCCCCCCCC(N)=O.CCCCCCCCCCCCCCCCCC(N)=O ZJOLCKGSXLIVAA-UHFFFAOYSA-N 0.000 description 1
- 239000000374 eutectic mixture Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 150000002431 hydrogen Chemical group 0.000 description 1
- 229920013821 hydroxy alkyl cellulose Polymers 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229940119170 jojoba wax Drugs 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- HGPXWXLYXNVULB-UHFFFAOYSA-M lithium stearate Chemical compound [Li+].CCCCCCCCCCCCCCCCCC([O-])=O HGPXWXLYXNVULB-UHFFFAOYSA-M 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229940062097 nitrogen 90 % Drugs 0.000 description 1
- WGOROJDSDNILMB-UHFFFAOYSA-N octatriacontanediamide Chemical compound NC(=O)CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC(N)=O WGOROJDSDNILMB-UHFFFAOYSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005029 sieve analysis Methods 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- PTISTKLWEJDJID-UHFFFAOYSA-N sulfanylidenemolybdenum Chemical class [Mo]=S PTISTKLWEJDJID-UHFFFAOYSA-N 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 150000003626 triacylglycerols Chemical class 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0207—Using a mixture of prealloyed powders or a master alloy
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
(57)【要約】 本発明によれば鉄をベースにした冶金用粉末組成物およびその製造法並びに使用が提供される。本発明の冶金用粉末組成物は、鉄および少なくとも１種の合金化添加剤を含む鉄−合金粉末；実質的に純粋な鉄粉末；および炭素粉末、例えばグラファイトを一定量含んでいる。この冶金用粉末組成物は鉄−合金粉末を鉄粉末および炭素粉末と混合してつくられる。このようにしてつくられた冶金用粉末組成物は、金属部材にした場合、例えば改善された機械加工性を示す。 (57) [Summary] In accordance with the present invention, there is provided an iron-based metallurgical powder composition and a method of making and using the same. The metallurgical powder composition of the present invention comprises an iron-alloy powder comprising iron and at least one alloying additive; a substantially pure iron powder; and a certain amount of a carbon powder, such as graphite. The metallurgical powder composition is made by mixing an iron-alloy powder with an iron powder and a carbon powder. The metallurgical powder composition thus produced exhibits, for example, improved machinability when formed into metal parts.
Description
【０００１】
（本発明の分野）
本発明は鉄をベースにした冶金用粉末組成物、並びにその製造法および使用に
関する。鉄をベースにした粉末組成物は実質的に純粋な鉄と合金化添加物として
好ましくはモリブデンを含んでいる鉄−合金粉末を含有している。このようにし
てつくられた鉄をベースにした粉末組成物は金属部材にした場合改善された機械
加工性をもっている。FIELD OF THE INVENTION The present invention relates to iron-based powder compositions for metallurgy, and methods of making and using the same. The iron-based powder composition contains substantially pure iron and an iron-alloy powder which preferably contains molybdenum as an alloying additive. The iron-based powder composition thus produced has improved machinability when made into metal parts.
【０００２】
（本発明の背景）
金属粉末組成物を緻密化し焼結して製造される金属部材の工業的な利用は多数
の分野において急速にに拡大されている。このような部材を製造する場合、金属
粉末組成物は典型的には金属をベースにした粉末と潤滑剤のような他の添加剤並
びに接合剤とからつくられている。金属をベースにした粉末は典型的には鉄の粉
末であり、これは随時１種またはそれ以上の合金化成分で合金化されていること
ができる。BACKGROUND OF THE INVENTION The industrial use of metal members produced by densifying and sintering a metal powder composition is rapidly expanding in many fields. In making such components, metal powder compositions are typically made up of metal-based powders and other additives such as lubricants and binders. The metal-based powder is typically an iron powder, which can optionally be alloyed with one or more alloying components.
【０００３】
鉄−合金粉末を製造する通常の方法は、鉄および１種またはそれ以上の所望の
合金化成分を含む熔融した均一な金属組成物をつくり、この金属成分を水で噴霧
化して均一な粉末組成物にする方法である。A common method of producing iron-alloy powders is to make a molten homogeneous metal composition containing iron and one or more desired alloying components and atomize the metal components with water to obtain a uniform composition. It is a method of forming a powder composition.
【０００４】
金属をベースにした粉末は、随時合金化を行った後、最終部材の性質を改善す
るためにしばしば他の添加剤と混合される。例えば金属をベースにした粉末はし
ばしば粉末の形をした少なくとも１種の他の合金化添加物（「合金化粉末」）と
混合される。合金化粉末は例えば最終的な焼結部材の強度および他の機械的な性
質を向上させることができる。Metal-based powders are often alloyed and then often mixed with other additives to improve the properties of the final component. For example, metal-based powders are often mixed with at least one other alloying additive in powder form ("alloying powder"). The alloyed powder can, for example, improve the strength and other mechanical properties of the final sintered member.
【０００５】
金属をベースにした粉末および随時使用される合金化粉末の混合物はまたしば
しば最終的な金属粉末組成物をつくるための他の添加剤、例えば潤滑剤および接
合剤と混合される。典型的にはこの金属粉末組成物を緻密化用のダイス型の中に
注ぎ込み、圧力（例えば５〜７０トン／平方インチ（ｔｓｉ））をかけ、ある場
合には高温において緻密化し緻密化された、即ち「生の」部材にする。次に生の
部材を通常焼結して凝集した金属部材にし、随時仕上げ加工を行う。仕上げ段階
の例には所望の仕様に従う金属部材の機械加工（例えば切断、裏削り、穿孔、丸
削り、フライス加工等）が含まれる。Mixtures of metal-based powders and optional alloying powders are also often mixed with other additives to make the final metal powder composition, such as lubricants and binders. The metal powder composition was typically poured into a densification die and subjected to pressure (eg, 5-70 tonnes per square inch (tsi)), and in some cases densified and densified at elevated temperatures. That is, it is a "raw" member. Next, the raw member is usually sintered into an agglomerated metal member, which is optionally finished. Examples of finishing steps include machining (e.g., cutting, backlining, drilling, rounding, milling, etc.) of metal parts according to desired specifications.
【０００６】
金属部材の仕上げの際に起こる一つの問題は、しばしば金属部材の機械加工が
困難なことである。例えば或る金属部材は穿孔が困難であり、機械加工の時間が
長くなり、機械加工用工具の寿命を短くし、機械加工装置を作動させるエネルギ
ー使用量を増加させる。One problem that occurs during the finishing of metal parts is that they are often difficult to machine. For example, some metal parts are difficult to drill, prolong machining times, shorten the life of machining tools, and increase energy usage to operate machining equipment.
【０００７】
鉄をベースにした金属部材の機械加工性を向上させる一つの解決法はＳｃｈｍ
ｉｄｔの米国特許４，０１８，６３２号（以後Ｓｃｈｍｉｄｔの特許と呼ぶ）に
記載されている。Ｓｃｈｍｉｄｔの特許にはグラファイトおよび鉄−モリブデン
を−マンガン合金を含む鋼粉末を使用して鉄をベースにした金属部材の機械加工
性を改善できることが記載されている。緻密化および焼結を行った後、この鋼粉
末混合物を或る温度図式に従って加熱および冷却して金属部材の機械加工性を改
善する。One solution to improving the machinability of iron-based metal parts is Schm
idt U.S. Pat. No. 4,018,632 (hereinafter referred to as the Schmidt patent). The Schmidt patent describes the use of graphite and steel powders containing iron-molybdenum-manganese alloys to improve the machinability of iron-based metal parts. After densification and sintering, the steel powder mixture is heated and cooled according to a temperature scheme to improve the machinability of the metal part.
【０００８】
鉄をベースにした金属部材の機械加工性を向上させる他の解決法はＵｅｎｏｓ
ｏｎｏの米国特許５，５９９，３７７号（以後Ｕｅｎｏｓｏｎｏの特許と呼ぶ）
に記載されている。Ｕｅｎｏｓｏｎｏの特許には、０．１重量％より少ないマン
ガンと約０．０８〜０．１５重量％の硫黄を含む鉄粉末の混合物；グラファイト
；および約０．０５〜約０．７０重量％のＭｏＯ3またはＷＯ3から成る群から選
ばれる少なくとも１種の化合物を含む金属粉末が記載されている。この鉄粉末は
、緻密化した鉄部材を水素を含む雰囲気の中で焼結した場合、フェライト粒子の
中にモリブデンまたはタングステンの化合物が溶解するために優れた機械加工性
と高い強度をもっていることが記載されている。Another solution to improve the machinability of iron-based metal parts is Uenos
ono US Pat. No. 5,599,377 (hereinafter referred to as the Uenosono patent)
It is described in. The Uenosono patent discloses a mixture of iron powder containing less than 0.1 wt% manganese and about 0.08-0.15 wt% sulfur; graphite; and about 0.05 to about 0.70 wt% MoO. A metal powder comprising at least one compound selected from the group consisting of 3 or WO 3 is described. This iron powder has excellent machinability and high strength because a compound of molybdenum or tungsten is dissolved in ferrite particles when a densified iron member is sintered in an atmosphere containing hydrogen. Have been described.
【０００９】
鉄をベースにした金属部材の機械加工性を向上させる他の解決法はＫａｎｅｋ
ｏ等の米国特許５，６７９，９０９号（以後Ｋａｎｅｋｏの特許と呼ぶ）に記載
されている。Ｋａｎｅｋｏの特許には、良好な機械加工性をもつ焼結材料が記載
されているが、この焼結材料はＣａＯ−ＭｇＯ−ＳｉＯ2の複合酸化物および主
として鉄を含む金属マトリックスの混合物を含んだ粉末を緻密化し焼結すること
によってつくられる。主として鉄を含む金属マトリックスは、純粋な鉄とＦｅＭ
ｏ、ＦｅＣｒ、ＦｅＷの「かたい」粒子、またはＴｒｉｂａｌｏｙ（Ｃｏ−Ｈｏ
−Ｃｒおよび／またはＣｏ−Ｈｏ−Ｓｉを含む）との混合物からつくることがで
きる。所望のかたさを与えるためにはこれらのかたい粒子は非鉄元素が少なくと
も５０重量％含まれていると考えられている。Another solution to improve the machinability of iron-based metal parts is Kanek.
U.S. Pat. No. 5,679,909 (hereinafter referred to as Kaneko's patent). The Kaneko patent describes a sintered material with good machinability, which comprises a mixture of CaO—MgO—SiO 2 complex oxide and a metal matrix containing mainly iron. It is made by densifying and sintering the powder. The metal matrix containing mainly iron is pure iron and FeM.
o, FeCr, FeW "hard" particles, or Tribaloy (Co-Ho
-Cr and / or Co-Ho-Si). It is believed that these hard particles contain at least 50% by weight of non-ferrous elements to provide the desired hardness.
【００１０】
上記の組成物および／または方法は金属部材の機械加工性を改善する手段を与
えるが、さらに別の組成物および方法を開発することが望ましいであろう。これ
らの別の組成物および方法によって同等なまたは改善された機械加工性をもつ金
属部材げ得られることが好ましい。While the compositions and / or methods described above provide a means of improving the machinability of metal parts, it would be desirable to develop additional compositions and methods. It is preferred that these alternative compositions and methods provide metal components with equivalent or improved machinability.
【００１１】
（本発明の概要）
本発明は冶金用粉末組成物およびその製造法並びに使用に関する。本発明の冶
金用粉末組成物は金属部材にした場合改善された機械加工性を示す。この改善さ
れた機械加工性は、少なくとも部分的には、該冶金用粉末組成物中に少なくとも
１種の鉄−合金粉末が或る量で存在することに因っている。SUMMARY OF THE INVENTION The present invention relates to metallurgical powder compositions and methods of making and using the same. The metallurgical powder composition of the present invention exhibits improved machinability when made into metal parts. This improved machinability is due, at least in part, to the presence of an amount of at least one iron-alloy powder in the metallurgical powder composition.
【００１２】
本発明の一具体化例においては、鉄および少なくとも１種の合金化添加剤とか
ら成る鉄−合金粉末をつくり、ここで該鉄−合金粉末の全重量に関し該合金化添
加剤は約０．０１〜約７重量％存在し、鉄は少なくとも８５重量％存在するよう
にする工程を含む製造法が提供される。この鉄−合金粉末を実質的に純粋な鉄粉
末および炭素、典型的には炭素粉末と混合して冶金用粉末組成物をつくる。該冶
金用粉末組成物は該冶金用粉末組成物の全重量に関し約５〜約４０重量％の鉄−
合金粉末、少なくとも５５重量％の実質的に純粋な鉄粉末、および少なくとも０
．１重量％の炭素を含んでいることが好ましい。In one embodiment of the present invention, an iron-alloy powder is made up of iron and at least one alloying additive, wherein the alloying additive is based on the total weight of the iron-alloy powder. There is provided a process comprising the steps of presenting from about 0.01 to about 7% by weight and iron being present at least 85% by weight. The iron-alloy powder is mixed with substantially pure iron powder and carbon, typically carbon powder, to form a metallurgical powder composition. The metallurgical powder composition comprises from about 5 to about 40% by weight of iron, based on the total weight of the metallurgical powder composition.
Alloy powder, at least 55% by weight of substantially pure iron powder, and at least 0
． It preferably contains 1% by weight of carbon.
【００１３】
本発明の他の具体化例においては、鉄およびモリブデンから成る鉄−モリブデ
ン合金粉末であって該鉄−モリブデン合金粉末の重量に関しモリブデンの量は約
０．１０〜約７．０重量％であり、鉄の量は少なくとも８５重量％である鉄−モ
リブデン合金粉末を約５〜約４０重量％含む冶金用粉末組成物が提供される。こ
の冶金用粉末組成物は少なくとも５５重量％の実質的に純粋な鉄粉末、および約
０．１〜約３重量％の炭素を含有している。In another embodiment of the present invention, an iron-molybdenum alloy powder consisting of iron and molybdenum, wherein the amount of molybdenum is about 0.10 to about 7.0 weight based on the weight of the iron-molybdenum alloy powder. %, And the amount of iron is at least 85% by weight. Provided is a metallurgical powder composition comprising from about 5 to about 40% by weight of an iron-molybdenum alloy powder. The metallurgical powder composition contains at least 55% by weight substantially pure iron powder and about 0.1 to about 3% by weight carbon.
【００１４】
また本発明においては、本発明の冶金用粉末組成物をつくり、この冶金用粉末
組成物を少なくとも約５ｔｓｉの圧力をかけて緻密化して金属部材をつくる方法
が提供される。The present invention also provides a method for producing a metallurgical powder composition of the present invention and densifying the metallurgical powder composition under a pressure of at least about 5 tsi to produce a metal member.
【００１５】
（本発明の詳細な説明）
本発明によれば、金属部材にした場合改善された機械加工性を有する改善され
た冶金用粉末組成物が提供される。「機械加工性」と言う言葉は機械で操作され
る工具によって何らかの方法で金属部材を仕上げることができる能力を意味する
。例えば本発明方法に従って製造された金属部材は切断、裏削り、穿孔、丸削り
、フライス加工またはこれらを組み合わせた操作を行い得ることが好ましい。DETAILED DESCRIPTION OF THE INVENTION According to the present invention, there is provided an improved metallurgical powder composition having improved machinability when made into a metal member. The term "machinable" refers to the ability to finish a metal part in some way with a machine operated tool. For example, it is preferable that the metal member manufactured according to the method of the present invention can be subjected to an operation such as cutting, beveling, boring, rounding, milling, or a combination thereof.
【００１６】
本発明の冶金用粉末組成物は、実質的に純粋な鉄の粉末、鉄−合金粉末、およ
び炭素を含んでいる鉄をベースにした粉末組成物である。これらの冶金用金属粉
末はまた随時合金化粉末、１種またはそれ以上の潤滑剤、１種またはそれ以上の
接合剤、および他の通常の粉末冶金用添加剤、或いはこれらの任意の組み合わせ
を含んでいることができる。The metallurgical powder composition of the present invention is a substantially pure iron powder, an iron-alloy powder, and an iron-based powder composition containing carbon. These metallurgical metal powders also optionally include alloying powders, one or more lubricants, one or more binders, and other conventional powder metallurgical additives, or any combination thereof. You can go out.
【００１７】
本発明においては予想外にも、金属部材をつくるのに用いられる冶金用粉末組
成物に或る量の鉄−合金粉末を加えることによって鉄をベースにした金属部材の
機械加工性を著しく改善できることが見出だされた。本発明に使用される鉄−合
金粉末は、機械加工性を改善するためのかたい相を提供し得る少なくとも１種の
合金化添加剤（例えばモリブデン含有化合物）を用いて鉄を部分的にまたは完全
に合金化させることによりつくられることが好ましい。Unexpectedly in the present invention, the machinability of iron-based metal parts is improved by adding an amount of iron-alloy powder to the metallurgical powder composition used to make the metal parts. It has been found that significant improvements can be made. The iron-alloy powders used in the present invention are partially or completely free of iron with at least one alloying additive (eg, a molybdenum-containing compound) that can provide a hard phase to improve machinability. Preferably, it is made by alloying with.
【００１８】
「合金化」という言葉は、鉄と合金化添加剤とを熔融し拡散または化学的な方
法で接合させ得る方法で混合することを意味する。合金化を行うのに適した方法
には「予備合金化」および「拡散合金化」が含まれる。The term “alloying” means mixing iron and alloying additives in such a way that they can be melted and joined by diffusion or chemical means. Suitable methods for effecting alloying include "prealloying" and "diffusion alloying".
【００１９】
予備合金化を行い拡散によって接合させられた鉄−合金粉末は当業界の専門家
に公知の任意の方法に従ってつくることができる。例えば予備合金化された鉄−
合金粉末は鉄および１種またはそれ以上の所望の合金化添加剤の熔融物からつく
ることができる。好ましくは次にこの熔融物を噴霧化し、噴霧になった液滴が固
化すると粉末が生じるようにする。拡散接合型鉄−合金粉末は１種またはそれ以
上の合金化添加剤を好ましくは酸化物の形で配合し、得られた混合物を高温（例
えば約８００℃以上）で焼鈍する。焼鈍の際に合金化用化合物は鉄粒子の表面の
中に拡散して鉄粒子を部分的に合金化する。好適な拡散接合法は英国特許１，１
６２，７０２号に記載されている。この特許は参考のために添付されている。The pre-alloyed diffusion bonded iron-alloy powder can be made according to any method known to those skilled in the art. For example, prealloyed iron-
The alloy powder can be made from a melt of iron and one or more desired alloying additives. The melt is then preferably atomized so that the atomized droplets solidify to form a powder. Diffusion-bonded iron-alloy powders are compounded with one or more alloying additives, preferably in the form of oxides, and the resulting mixture is annealed at elevated temperatures (eg, above about 800 ° C). During annealing, the alloying compound diffuses into the surface of the iron particles and partially alloys the iron particles. The preferred diffusion bonding method is British Patent 1,1.
62,702. This patent is attached for reference.
【００２０】
本発明の好適具体化例においては、鉄−合金粉末は予備合金化法でつくられる
。予備合金化法は鉄と合金化添加剤とを容易に完全に合金化させる利点をもって
いる。In a preferred embodiment of the present invention, the iron-alloy powder is made by a prealloying process. The pre-alloying method has the advantage of easily and completely alloying iron with alloying additives.
【００２１】
鉄−合金粉末は冶金用粉末組成物中において鉄−合金粉末が存在しない組成物
に比べ金属部材の機械加工性を改善するのに有効な濃度で存在していることが好
ましい。好ましくは鉄−合金粉末の量は冶金用粉末組成物の全重量に関し約５〜
約４０重量％、さらに好ましくは約１０〜約３０重量％、最も好ましくは約１２
〜約２０重量％である。The iron-alloy powder is preferably present in the metallurgical powder composition in a concentration effective to improve the machinability of the metal member as compared to the composition without the iron-alloy powder. Preferably the amount of iron-alloy powder is from about 5 to about the total weight of the metallurgical powder composition.
About 40% by weight, more preferably about 10 to about 30% by weight, most preferably about 12%.
Is about 20% by weight.
【００２２】
鉄−合金粉末をつくるのに使用できる鉄は通常の不純物を約１．０重量％以下
、好ましくは約０．５重量％以下しか含まない実質的に純粋な鉄であることが好
適である。予備合金化を行う前において鉄は任意の物理的な形をしていることが
できる。例えば鉄は粉末の形或いは鉄屑の形をしていることができる。拡散接合
法に対しては鉄は粉末の形であることが好ましい。The iron that can be used to make the iron-alloy powder is preferably substantially pure iron containing no more than about 1.0% by weight of conventional impurities, preferably no more than about 0.5% by weight. Is. The iron can be in any physical form prior to prealloying. For example, iron can be in powder form or scrap form. For diffusion bonding, iron is preferably in powder form.
【００２３】
鉄−合金粉末をつくるのに適した合金化添加剤の例には、モリブデン、マンガ
ン、マグネシウム、タングステン、クロム、ケイ素、銅、ニッケル、金、バナジ
ン、コロンビウム（ニオブ）、またはアルミニウムの元素、化合物、または合金
、或いはこれらの酸化物；銅と錫または燐との二元合金；タングステンまたはケ
イ素の炭化物；窒化ケイ素、マンガンまたはモリブデンの硫化物；或いはこれら
の組み合わせが含まれる。好ましくは鉄−合金粉末は、モリブデン、マンガン、
マグネシウム、タングステン、クロム、ケイ素、銅、ニッケル、バナジン、それ
らの酸化物、またはそれらの任意の組み合わせを含む。さらに好ましくはモリブ
デン、クロム、バナジン、タングステン、またはそれらの組み合わせを含む少な
くとも１種の合金化添加剤を含んでいる。Examples of alloying additives suitable for making iron-alloy powders include molybdenum, manganese, magnesium, tungsten, chromium, silicon, copper, nickel, gold, vanadine, columbium (niobium), or aluminum. Elements, compounds or alloys or oxides thereof; binary alloys of copper and tin or phosphorus; carbides of tungsten or silicon; sulfides of silicon nitride, manganese or molybdenum; or combinations thereof. Preferably the iron-alloy powder is molybdenum, manganese,
Includes magnesium, tungsten, chromium, silicon, copper, nickel, vanadine, their oxides, or any combination thereof. More preferably it contains at least one alloying additive including molybdenum, chromium, vanadine, tungsten, or combinations thereof.
【００２４】
鉄−合金粉末中における合金化添加剤の全重量は選ばれた合金化添加剤に依存
している。典型的には合金化添加剤は鉄−合金粉末中において該粉末の全重量に
関し約０．０１〜約７．０重量％、好ましくは約０．１０〜約３．０重量％、最
も好ましくは約０．１０〜約２．０重量％の量で存在している。The total weight of alloying additive in the iron-alloy powder depends on the alloying additive selected. Typically, the alloying additive is present in the iron-alloy powder in an amount of from about 0.01 to about 7.0 wt%, preferably from about 0.10 to about 3.0 wt%, and most preferably, based on the total weight of the powder. It is present in an amount of about 0.10 to about 2.0% by weight.
【００２５】
鉄−合金粉末はまた例えば鉄−合金粉末をつくるのに用いられる鉄に由来する
ような残留不純物を含んでいることができる。一般に鉄−合金粉末はその全重量
に関し最低残留不純物含量が少なくとも約０．１５重量％、さらに好ましくは少
なくとも約０．２５重量％であり、また最大残留不純物含量が好ましくは最高約
１．０重量％、さらに好ましくは最高約０．９重量％である。The iron-alloy powder may also contain residual impurities such as those derived from iron used to make the iron-alloy powder. Generally, the iron-alloy powder has a minimum residual impurity content of at least about 0.15% by weight, more preferably at least about 0.25% by weight, and a maximum residual impurity content of preferably up to about 1.0% by weight, based on its total weight. %, More preferably up to about 0.9% by weight.
【００２６】
鉄−合金粉末の残りは鉄であることが好ましい。鉄は好ましくは鉄−合金粉末
の中に少なくとも８５．０重量％、さらに好ましくは少なくとも約９０．０重量
％、最も好ましくは約９４．０〜約９９．８重量％の量で存在している。The balance of the iron-alloy powder is preferably iron. Iron is preferably present in the iron-alloy powder in an amount of at least 85.0 wt%, more preferably at least about 90.0 wt%, and most preferably from about 94.0 to about 99.8 wt%. .
【００２７】
本発明の好適具体化例においては、鉄はモリブデンを含む少なくとも１種の合
金化添加剤を用いて予備合金化され、鉄−モリブデン予備合金粉末がつくられる
。鉄−モリブデン予備合金粉末をつくるのに使用されるモリブデン添加剤はモリ
ブデンを含み予備合金化工程で鉄と合金をつくり得る任意の元素、化合物または
合金である。モリブデン添加剤は例えばモリブデンの酸化物、例えば三酸化モリ
ブデンまたは鉄モリブデン合金であることができる。モリブデン添加剤はまた実
質的に純粋な元素状のモリブデン（好ましくは純度約９０重量％以上）であるこ
とができる。好ましくはモリブデン添加剤は三酸化モリブデンのようなモリブデ
ンの酸化物である。In a preferred embodiment of the invention, iron is prealloyed with at least one alloying additive containing molybdenum to produce an iron-molybdenum prealloy powder. The molybdenum additive used to make the iron-molybdenum prealloy powder is any element, compound or alloy that contains molybdenum and is capable of alloying with iron in the prealloying process. The molybdenum additive can be, for example, an oxide of molybdenum, such as molybdenum trioxide or an iron molybdenum alloy. The molybdenum additive can also be substantially pure elemental molybdenum (preferably greater than about 90% by weight pure). Preferably the molybdenum additive is an oxide of molybdenum, such as molybdenum trioxide.
【００２８】
本発明の最も好適な具体化例においては、鉄−モリブデン予備合金粉末は好ま
しくは該鉄−モリブデン予備合金粉末の全重量に関し約０．４０〜約１．６重量
％のモリブデンと約９７．４〜約９９．５０重量％の鉄とを含んでいる。鉄−モ
リブデン予備合金粉末は該粉末の全重量に関し好ましくは約０．０３重量％の硫
黄、約０．０２重量％のケイ素、および約０．０１重量％の窒素を最大残留不純
物として含んでいる。In the most preferred embodiment of the present invention, the iron-molybdenum prealloy powder is preferably from about 0.40 to about 1.6% by weight molybdenum and about 5% by weight based on the total weight of the iron-molybdenum prealloy powder. 97.4 to about 99.50% by weight iron. The iron-molybdenum prealloy powder preferably contains about 0.03 wt% sulfur, about 0.02 wt% silicon, and about 0.01 wt% nitrogen as maximum residual impurities, based on the total weight of the powder. .
【００２９】
市販されている鉄−モリブデン予備合金粉末の例にはＨｏｅｇａｎａｅｓ社の
ＡＮＣＯＲＳＴＥＥＬ １５０ＨＰ鋼粉末、８５ＨＰ鋼粉末、５０ＨＰ鋼粉末、
およびこれらの組み合わせが含まれる。１５０ＨＰ、８５ＨＰ、５０ＨＰ鋼粉末
中のモリブデンの量は予備合金の全重量に関しそれぞれ約１．５重量％、０．８
５重量％および０．５５重量％である。これらの鉄−モリブデン予備合金粉末は
約０．７５重量％以下のマンガン、クロム、ケイ素、銅、ニッケル、またはアル
ミニウムのような材料、および約０．０２重量％以下の炭素を含んでおり、残り
は鉄である。市販されている鉄−モリブデン予備合金粉末の他の例としてはＨｏ
ｅｇａｎａｅｓ社のＡＮＣＯＲＳＴＥＥＬ ４６００Ｖ鋼粉末があり、これは約
０．５〜０．６重量％のモリブデン、約１．５〜２．０重量％のニッケル、約０
．１〜０．２５重量％のマンガン、約０．０２重量％以下の炭素を含んでおり、
残りは好ましくは実質的に鉄である。本発明に有用な他のＡＮＣＯＲＳＴＥＥＬ
鉄−モリブデン予備合金粉末には例えばＡＮＣＯＲＳＴＥＥＬ ２０００および
７３７鋼粉末が有る。本発明に使用する予備合金粉末としては１５０ＨＰ、８５
ＨＰ、５０ＨＰ鋼粉末が好適である。Examples of commercially available iron-molybdenum prealloy powders include ANCORSTEEL 150HP steel powder, 85HP steel powder, 50HP steel powder from Hoeganaes.
And combinations thereof. The amounts of molybdenum in the 150HP, 85HP, 50HP steel powders were about 1.5% by weight and 0.8%, respectively, based on the total weight of the prealloy.
5% by weight and 0.55% by weight. These iron-molybdenum prealloyed powders contain up to about 0.75% by weight of materials such as manganese, chromium, silicon, copper, nickel, or aluminum, and up to about 0.02% by weight of carbon, with the balance remaining. Is iron. Another example of commercially available iron-molybdenum prealloy powder is Ho.
There is ANCORSTEEL 4600V steel powder from Eganae, which contains about 0.5-0.6% by weight molybdenum, about 1.5-2.0% by weight nickel, about 0%.
． 1 to 0.25% by weight of manganese, about 0.02% by weight or less of carbon,
The balance is preferably substantially iron. Other ANCORSTEEELs useful in the present invention
Iron-molybdenum prealloy powders include, for example, ANCORSTEEEL 2000 and 737 steel powders. The preliminary alloy powder used in the present invention includes 150 HP, 85
HP and 50HP steel powders are preferred.
【００３０】
本発明の冶金用粉末組成物はまた実質的に純粋な鉄の粉末を含んでいる。実質
的に純粋な鉄の粉末は該冶金用粉末組成物の全重量に関し好ましくは少なくとも
約５５重量％、さらに好ましくは約６０〜約９５重量％、最も好ましくは約７０
〜約９０重量％の量で存在している。The metallurgical powder composition of the present invention also includes a substantially pure iron powder. The substantially pure iron powder is preferably at least about 55% by weight, more preferably about 60 to about 95% by weight, most preferably about 70% by weight, based on the total weight of the metallurgical powder composition.
Is present in an amount of about 90% by weight.
【００３１】
本発明に使用できる実質的に純粋な鉄の粉末は好ましくは約１．０重量％以下
、さらに好ましくは約０．５重量％以下の通常の不純物を含む鉄の粉末である。
このような高度に圧縮し得る冶金級の鉄粉末は、米国ニュージャージー州、Ｒｉ
ｖｅｒｔｏｎのＨｏｅｇａｎａｅｓ Ｃｏｒｐｏｒａｔｉｏｎ製のＡＮＣＯＲＳ
ＴＥＥＬ １０００系の純鉄粉末、例えば１０００、１０００Ｂ、および１００
０Ｃである。例えばＡＮＣＯＲＳＴＥＥＬ １０００鉄粉末は典型的な篩分け図
式においてＮｏ．３２５の篩（米国篩）よりも小さい粒子が約２２重量％、Ｎｏ
．１００篩よりも大きな粒子が約１０重量％で、残りがこの二つの大きさの間の
粒子である（Ｎｏ．６０より大きな粒子が極微量存在する）。ＡＮＣＯＲＳＴＥ
ＥＬ １０００粉末は見かけの密度が約２．８５〜３．００ｇ／ｃｍ3、典型的
には２．９４ｇ／ｃｍ3である。The substantially pure iron powder that can be used in the present invention is an iron powder containing preferably no more than about 1.0 wt%, more preferably no more than about 0.5 wt% conventional impurities.
Such highly compressible metallurgical grade iron powder is commercially available from Ri, New Jersey, USA.
ANCORS from Hoeganaes Corporation of Verton
TEEL 1000 series pure iron powders, such as 1000, 1000B, and 100
It is 0C. For example, ANCORSTEEL 1000 iron powder is No. 1 in a typical sieving scheme. Approximately 22% by weight of particles smaller than 325 sieve (US sieve), No
． About 10% by weight of particles larger than 100 sieves and the rest are particles between these two sizes (there are trace amounts of particles larger than No. 60). ANCORSTE
EL 1000 powder apparent density of about 2.85~3.00g / cm 3, is typically 2.94 g / cm 3.
【００３２】
鉄−合金粉末および実質的に純粋な鉄の粉末の粒子は或る粒度分布をもってい
る。典型的にはこれらの粉末はその粉末試料の少なくとも約９０重量％がＮｏ．
４５の篩（米国篩）を通過し、さらに好ましくは粉末試料の少なくとも約９０重
量％がＮｏ．６０の篩を通過するような分布をもっている。これらの粉末は典型
的には少なくとも約５０重量％がＮｏ．７０の篩を通過し且つＮｏ．４００の篩
上に残り、即ちそれよりも大きく、さらに好ましくは少なくとも約５０重量％が
Ｎｏ．７０の篩を通過し且つＮｏ．３２５の篩上に残る、即ちそれよりも大きい
。またこれらの粉末は典型的には粒子の少なくとも約５重量％、もっと普通には
少なくとも約１０重量％、一般的には少なくとも約１５重量％がＮｏ．３２５の
篩を通過する。このようにこれらの粉末は重量平均の粒径が最小１μまたはそれ
以下、最大約８５０〜１，０００μであることができるが、一般には重量平均の
粒径は約１０〜５００μの範囲である。鉄−合金粒子または実質的に純粋な鉄の
粒子は最大の重量平均粒径が好ましくは最高約３５０μであり、もっと好ましく
は約２５〜１５０μの範囲にあり、最も好ましくは８０〜１５０μの範囲である
。篩分析に関してはＭＰＩＦ標準０５を参照されたい。The particles of iron-alloy powder and substantially pure iron powder have a size distribution. Typically, these powders will have at least about 90% by weight of the powder sample as No.
No. 45 sieve (US sieve), more preferably at least about 90% by weight of the powder sample is No. It has a distribution that passes through 60 sieves. These powders typically contain at least about 50% by weight of No. 70 sieve and no. 400 sieves, i.e. larger, more preferably at least about 50% by weight. 70 sieve and no. It remains on the 325 sieve, i.e. is larger. Also, these powders typically contain at least about 5% by weight of the particles, more usually at least about 10% by weight, and generally at least about 15% by weight of No. Pass through a 325 sieve. Thus, these powders can have a weight average particle size of at least 1 μ or less and a maximum of about 850 to 1,000 μ, but generally the weight average particle size is in the range of about 10 to 500 μ. The iron-alloy particles or particles of substantially pure iron preferably have a maximum weight average particle size of up to about 350μ, more preferably in the range of about 25-150μ, and most preferably in the range of 80-150μ. is there. See MPIF Standard 05 for sieve analysis.
【００３３】
冶金用粉末組成物はまた炭素を含んでいることが好ましい。炭素は好ましくは
実質的に純粋な炭素、例えばグラファイトとして加えられる。好ましくは炭素粉
末は少なくとも９９．０重量％、さらに好ましくは少なくとも９９．５重量％の
純度をもっている。炭素の粉末は微結晶の形および／または無定形の形をしてい
ることができる。冶金用粉末組成物中において炭素は該組成物の重量に関し好ま
しくは約０．１〜３．０重量％、さらに好ましくは約０．２〜約２．０重量％、
最も好ましくは約０．３〜約１．２重量％の量で存在している。The metallurgical powder composition preferably also contains carbon. The carbon is preferably added as substantially pure carbon, eg graphite. Preferably the carbon powder has a purity of at least 99.0% by weight, more preferably at least 99.5% by weight. The powder of carbon can be in crystalline form and / or in amorphous form. Carbon in the metallurgical powder composition is preferably about 0.1 to 3.0% by weight, more preferably about 0.2 to about 2.0% by weight, based on the weight of the composition.
Most preferably it is present in an amount of about 0.3 to about 1.2% by weight.
【００３４】
本発明の冶金用粉末組成物は炭素粉末の他にまた随時合金化粉末を含んでいる
ことができる。本明細書において使用される「合金化粉末」という言葉は、この
添加剤が冶金用粉末組成物と最終的に合金をつくるか部分的に合金をつくるかの
如何に拘わらず、冶金用粉末組成物と物理的に配合された粒子状の元素、化合物
または合金の粉末を意味する。The metallurgical powder composition of the present invention may optionally contain an alloying powder in addition to the carbon powder. As used herein, the term "alloying powder" refers to the metallurgical powder composition regardless of whether this additive eventually alloys or partially alloys with the metallurgical powder composition. It means a powder of an element, a compound or an alloy in the form of particles physically mixed with an object.
【００３５】
冶金用粉末組成物の中に存在し得る随時加えられる合金化粉末の例としては、
モリブデン、マンガン、銅、ニッケル、クロム、ケイ素、金、バナジン、コロン
ビウム（ニオブ）、燐、アルミニウム、硼素の元素、化合物、または合金、或い
はこれらの酸化物；銅と錫、銅とニッケル、または銅と燐との二元合金；マンガ
ン、クロム、硼素、燐またはケイ素の鉄合金；炭素が鉄、バナジン、マンガン、
クロム、モリブデンまたはこれらの組み合わせから成る群から選ばれる元素と組
み合わせられた低融点の三元または四元共融混合物；タングステンまたはケイ素
の炭化物；窒化ケイ素、マンガンまたはモリブデンの硫化物；或いはこれらの組
み合わせが含まれる。好適な合金化粉末はモリブデン、マンガン、銅、ニッケル
クロム、バナジン、硼素、またはそれらの任意の組み合わせを含む元素、化合物
または合金を含んでおり、さらに好ましくは銅、ニッケル、またはそれらの組み
合わせを含む元素、化合物、または合金を含んでいる。Examples of optionally added alloying powders that may be present in the metallurgical powder composition include:
Molybdenum, manganese, copper, nickel, chromium, silicon, gold, vanadine, columbium (niobium), phosphorus, aluminum, boron elements, compounds, or alloys or oxides thereof; copper and tin, copper and nickel, or copper Binary alloy of manganese and phosphorus; iron alloy of manganese, chromium, boron, phosphorus or silicon; carbon is iron, vanazine, manganese,
Low melting ternary or quaternary eutectic mixtures in combination with elements selected from the group consisting of chromium, molybdenum or combinations thereof; tungsten or silicon carbides; silicon nitride, manganese or molybdenum sulfides; or combinations thereof. Is included. Suitable alloying powders include elements, compounds or alloys including molybdenum, manganese, copper, nickel chromium, vanadium, boron, or any combination thereof, more preferably copper, nickel, or combinations thereof. Contains an element, compound, or alloy.
【００３６】
合金化粉末は冶金用粉末組成物の中において最高約１０重量％の量で、典型的
には約０．２５〜約１０重量％、好ましくは約０．２５〜約７重量％、さらに好
ましくは約０．５〜約５重量％の範囲の量で存在している。一般に合金化粉末は
重量平均粒径が約１００μ以下、好ましくは約７５μ以下、さらに好ましくは約
３０μ以下であり、最も好ましくは約５〜約２０μの範囲にある。合金化粉末の
粒径は一般に比較的小さく、篩分け法とは反対にレーザー光散乱法によって分析
することができる。レーザー光散乱法ではｄx値で粒径分布の結果が報告される
。この値は粉末のｘ容積％が報告された値よりも小さい直径をもっていることを
示す。合金化粒子は一般に、ｄ90値が約１００μ以下、好ましくは約７５μ以下
、さらに好ましくは約５０μ以下であり、ｄ50値が約７５μ以下、好ましくは約
５０μ以下、さらに好ましくは約３０μ以下であるような粒径分布をもっている
。The alloying powder is present in the metallurgical powder composition in an amount of up to about 10% by weight, typically about 0.25 to about 10% by weight, preferably about 0.25 to about 7% by weight, More preferably, it is present in an amount in the range of about 0.5 to about 5% by weight. Generally, the alloying powder has a weight average particle size of less than about 100 microns, preferably less than about 75 microns, more preferably less than about 30 microns, and most preferably in the range of about 5 to about 20 microns. The particle size of alloying powders is generally relatively small and can be analyzed by laser light scattering as opposed to sieving. The laser light scattering method are reported the results of particle size distribution d x values. This value indicates that x% by volume of the powder has a smaller diameter than the reported value. The alloyed particles generally have ad 90 values of about 100 μ or less, preferably about 75 μ or less, more preferably about 50 μ or less, and d 50 values of about 75 μ or less, preferably about 50 μ or less, more preferably about 30 μ or less. It has a certain particle size distribution.
【００３７】
本発明の好適具体化例においては、冶金用粉末組成物は層を含む合金化粉末を
含んでいる。銅は冶金用粉末組成物からつくられた金属部材に硬化特性を賦与す
る。銅を含む粉末は比較的不純物の少ない元素状の銅であることが好ましい。銅
を含む合金化粉末は好ましくは該粉末の全重量に関し少なくとも９０重量％、さ
らに好ましくは少なくとも９８重量％、最も好ましくは少なくとも９９．５重量
％の銅を含んでいる。In a preferred embodiment of the present invention, the metallurgical powder composition comprises an alloying powder containing layers. Copper imparts hardening properties to metal parts made from metallurgical powder compositions. The powder containing copper is preferably elemental copper containing relatively few impurities. The copper-containing alloying powder preferably contains at least 90% by weight, more preferably at least 98% by weight, most preferably at least 99.5% by weight, based on the total weight of the powder.
【００３８】
好ましくは銅を含む粉末は本発明の冶金用粉末組成物の中で該組成物の全重量
に関し少なくとも０．２重量％、さらに好ましくは約０．５〜約４．０重量％、
最も好ましくは約１．０〜約３．０重量％の量で存在している。Preferably, the copper-containing powder is at least 0.2% by weight, more preferably about 0.5 to about 4.0% by weight, based on the total weight of the metallurgical powder composition of the present invention,
Most preferably it is present in an amount of about 1.0 to about 3.0% by weight.
【００３９】
本発明の冶金用粉末組成物はまた通常冶金用組成物と一緒に使用される特殊目
的の添加剤、例えば潤滑剤、機械加工剤、および可塑剤を含んでいることができ
る。The metallurgical powder composition of the present invention may also include special purpose additives commonly used with metallurgical compositions, such as lubricants, machining agents, and plasticizers.
【００４０】
本発明の好適具体化例においては、冶金用粉末組成物はダイス型のキャビティ
ーから緻密化された部材を取り出すのに要する力を減少させるための潤滑剤を含
んでいる。典型的な粉末冶金用の潤滑剤の例には、ステアレート、例えばステア
リン酸亜鉛、ステアリン酸リチウム、ステアリン酸マグネシウムまたはステアリ
ン酸カルシウム；合成ワックス、例えばエチレンビスステアリン酸アミドまたは
ポリオレフィン；またはこれらの組み合わせが含まれる。潤滑剤はまたポリアミ
ド潤滑剤、例えば米国特許５，３６８，６３０号、特にＬｕｋの米国特許５，４
９８，２７６号に記載されたＰＲＯＭＯＬＤ−４５０、またはＪｏｈｎｓｏｎ等
の米国特許５，３３０，７９２号に記載された脂肪酸の金属塩であることができ
る。これらの特許は参考のために添付されている。また潤滑剤は上記潤滑剤の任
意の組み合わせであることもできる。In a preferred embodiment of the present invention, the metallurgical powder composition includes a lubricant to reduce the force required to remove the densified component from the die cavity. Examples of typical powder metallurgical lubricants include stearates such as zinc stearate, lithium stearate, magnesium stearate or calcium stearate; synthetic waxes such as ethylene bis stearamide or polyolefins; or combinations thereof. included. Lubricants may also be polyamide lubricants, such as US Pat. No. 5,368,630, especially Luk US Pat.
PROMOLD-450, described in US Pat. No. 98,276, or the metal salts of fatty acids described in US Pat. No. 5,330,792 to Johnson et al. These patents are included for reference. The lubricant can also be any combination of the above lubricants.
【００４１】
潤滑剤は一般に冶金用粉末組成物の最高約２．０重量％、好ましくは約０．１
〜約１．５重量％、さらに好ましくは約０．１〜約１．０重量％、最も好ましく
は約０．２〜約０．７５重量％の量で加えられる。Lubricants are generally up to about 2.0% by weight of the metallurgical powder composition, preferably about 0.1.
To about 1.5% by weight, more preferably about 0.1 to about 1.0% by weight, and most preferably about 0.2 to about 0.75% by weight.
【００４２】
好適な潤滑剤はエチレンビスステアリン酸アミド、ステアリン酸亜鉛、Ｋｏｎ
ｏｌｕｂｅTM（スエーデン、Ｈｏｇａｎａｓ在のＨｏｇａｎａｓ Ｃｏｒｐｏｒ
ａｔｉｏｎ製）ＦｅｒｒｏｌｕｂｅTM（Ｂｌａｎｃｈｆｏｒｄ製）、およびポリ
エチレンワックスである。これらの潤滑剤は冶金用粉末組成物の全重量に関し約
０．２〜約１．５重量％の量で加えることが好ましい。Suitable lubricants are ethylene bisstearic acid amide, zinc stearate, Kon
olube ™ (Hoganas Corporation of Hoganas, Sweden)
ation) Ferrolube ™ (Blanchford), and polyethylene wax. These lubricants are preferably added in an amount of about 0.2 to about 1.5% by weight, based on the total weight of the metallurgical powder composition.
【００４３】
他の添加剤、例えば可塑剤および機械加工剤が冶金用粉末組成物の中に存在す
ることもできる。好ましくはこれらの他の添加剤は冶金用粉末組成物の中におい
て該組成物の全重量に関し約０．０５〜約１．５重量％、さらに好ましくは約０
．１〜約０．５重量％の量で存在している。ポリエチレン−ポリプロピレン共重
合体のような可塑剤は典型的には接合剤および／または潤滑剤と組み合わせて使
用される。機械加工剤、例えば硫化モリブデン、硫化鉄、窒化硼素、硼酸または
これらの組み合わせは典型的には最終的な機械加工操作を助けるために使用され
る。好適具体化例においては硫化マンガンは冶金用粉末組成物の中において該組
成物の全重量に関し約０．１〜約０．７５重量％の量で存在している。Other additives, such as plasticizers and machining agents, can also be present in the metallurgical powder composition. Preferably, these other additives are present in the metallurgical powder composition in an amount of from about 0.05 to about 1.5% by weight, more preferably about 0, based on total weight of the composition.
． It is present in an amount of 1 to about 0.5% by weight. Plasticizers such as polyethylene-polypropylene copolymers are typically used in combination with binders and / or lubricants. Machining agents such as molybdenum sulfide, iron sulfide, boron nitride, boric acid or combinations thereof are typically used to aid the final machining operation. In the preferred embodiment, manganese sulfide is present in the metallurgical powder composition in an amount of about 0.1 to about 0.75% by weight, based on the total weight of the composition.
【００４４】
また冶金用粉末組成物は冶金用粉末組成物中に存在する異なった成分を接合さ
せて偏析を阻止するための１種またはそれ以上の接合剤を含んでいることができ
る。本明細書において使用される「接合」という言葉は、冶金用粉末組成物の成
分の接着を容易にする任意の物理的または化学的手段を意味するものとする。The metallurgical powder composition may also include one or more bonding agents to bond the different components present in the metallurgical powder composition to prevent segregation. The term "bonding" as used herein shall mean any physical or chemical means that facilitates the adhesion of the components of the metallurgical powder composition.
【００４５】
本発明の好適な具体化例においては、接合は少なくとも１種の接合剤を用いる
ことによって行われる。本発明に使用できる接合剤はＳｅｍｅｌの米国特許４，
８３４，８００号、Ｅｎｇｓｔｒｏｍの米国特許４，４８３，９０５号、Ｒｕｔ
ｚ等の米国特許５，１５４，８８１号、およびＳｅｍｅｌの米国特許５，２９８
，０５５号に記載されている。これらの特許は参考のために添付されている。In a preferred embodiment of the invention, the joining is done by using at least one joining agent. The bonding agent that can be used in the present invention is Semel US Pat.
834,800, Engstrom U.S. Pat. No. 4,483,905, Rut.
Z et al., US Pat. No. 5,154,881, and Semel US Pat. No. 5,298.
, 055. These patents are included for reference.
【００４６】
このような接合剤としては例えばポリエチレングリコールまたはポリプロピレ
ングリコールのようなポリグリコール；グリセリン；ポリビニルアルコール；酢
酸ビニルの単独重合体または共重合体；セルロースのエステルまたはエーテルの
樹脂；メタクリレートの重合体または共重合体；アルキッド樹脂；ポリウレタン
樹脂；ポリエステル樹脂；またはこれらの組み合わせが含まれる。有用な接合剤
の他の例にはＳｅｍｅｌ等の米国特許５，２９８，０５５号に記載された比較的
高分子量のポリアルキレンオキシドをベースにした組成物がある。有用な接合剤
にはまた二塩基性の有機酸、例えばアゼライン酸、および１種またはそれ以上の
極性成分、例えばＬｕｋの米国特許５，２９０，３３６号記載のポリエーテル（
液体または固体）およびアクリル樹脂がある。これらの特許は参考のために添付
されている。Ｌｕｋの米国特許５，２９０，３３６号記載の接合剤は潤滑剤とし
ても有利に作用する。他の有用な接合剤にはＬｕｋの米国特許５，３６８，６３
０号記載のセルロースエステル樹脂、ヒドロキシアルキルセルロース樹脂、およ
び熱可塑性フェノール樹脂が含まれる。これらの特許は参考のために添付されて
いる。Examples of such a binder include polyglycol such as polyethylene glycol or polypropylene glycol; glycerin; polyvinyl alcohol; vinyl acetate homopolymer or copolymer; cellulose ester or ether resin; methacrylate polymer. Or a copolymer; an alkyd resin; a polyurethane resin; a polyester resin; or a combination thereof. Other examples of useful binders are the relatively high molecular weight polyalkylene oxide based compositions described in US Pat. No. 5,298,055 to Semel et al. Useful binders also include dibasic organic acids such as azelaic acid, and one or more polar components such as the polyethers described by Luk in US Pat. No. 5,290,336 (
Liquid or solid) and acrylic resin. These patents are included for reference. The cements of Luk, US Pat. No. 5,290,336, also act as lubricants. Other useful binders include Luk US Pat. No. 5,368,63
The cellulose ester resin described in No. 0, a hydroxyalkyl cellulose resin, and a thermoplastic phenol resin are included. These patents are included for reference.
【００４７】
接合剤はまた低融点の固体の重合体またはワックス、例えば軟化温度が２００
℃（３９０°Ｆ）の重合体またはワックス、例えばポリエステル、ポリエチレン
、エポキシド、ウレタン、パラフィン、エチレンビスステアリン酸アミド、およ
び綿実ワックス、並びに重量平均分子量が３，０００より小さいポリオレフィン
、およびアルキル部分がＣ14〜24のトリグリセリドおよび水素化誘導体を含むそ
の誘導体、例えば１９９９年４月２９日公開の国際特許公開明細書９９／２０６
８９号記載の綿実油、大豆油、ホホバ油、およびその配合物を含んでいることが
できる。この特許は参考のために添付されている。これらの接合剤は該明細書記
載の乾燥接合法により該接合剤に対して記載された一般的な量で加えることがで
きる。本発明に使用できる他の接合剤は米国特許５，０６９，７１４号記載のポ
リビニルピロリドン、或いはトール油エステルである。この特許は参考のために
添付されている。好適な接合剤はポリエチレンオキシドおよびポリ酢酸ビニルま
たはその組み合わせである。これらの接合剤は国際特許公開明細書９９／２０６
８９号に記載されている。The binder may also be a low melting solid polymer or wax, for example having a softening temperature of 200.
C. (390.degree. F.) polymers or waxes such as polyesters, polyethylenes, epoxides, urethanes, paraffins, ethylenebisstearic acid amide, and cottonseed waxes, and polyolefins having a weight average molecular weight of less than 3,000, and alkyl moieties. C 14-24 triglycerides and their derivatives, including hydrogenated derivatives, such as International Patent Publication WO 99/206 published Apr. 29, 1999.
It may include cottonseed oil, soybean oil, jojoba oil described in No. 89, and blends thereof. This patent is attached for reference. These binders can be added by the dry bonding method described in the specification in the general amounts stated for the binder. Other binders that can be used in the present invention are polyvinylpyrrolidone described in US Pat. No. 5,069,714 or tall oil ester. This patent is attached for reference. Suitable binders are polyethylene oxide and polyvinyl acetate or combinations thereof. These binders are described in WO 99/206.
No. 89.
【００４８】
冶金用粉末組成物中に存在する接合剤の量は密度、粒径分布および鉄−合金粉
末、冶金用粉末組成物中の鉄粉末および随時使用される合金化粉末の量のような
因子に依存する。一般に接合剤は冶金用粉末組成物の全重量に関し少なくとも約
０．００５重量％、さらに好ましくは約０．００５〜２重量％、最も好ましくは
約０．０５〜約１重量％の量で加えられる。The amount of binder present in the metallurgical powder composition is such as density, particle size distribution and amount of iron-alloy powder, iron powder in the metallurgical powder composition and optionally alloying powder. Depends on factors. Generally, the binder is added in an amount of at least about 0.005% by weight, more preferably about 0.005 to 2% by weight, most preferably about 0.05 to about 1% by weight, based on the total weight of the metallurgical powder composition. .
【００４９】
本発明の好適具体化例においては、冶金用粉末組成物は約１０〜約２０重量％
の鉄−モリブデン予備合金粉末、約８０〜約９０重量％の実質的に純粋な鉄粉末
、約０．１〜約１．２重量％の好ましくはグラファイト粉末である炭素、および
約０．１〜約３．０重量％の好ましくは銅含有粉末である銅を含んでいる。この
具体化例においては鉄−モリブデン予備合金粉末は好ましくは約０．４〜約２．
０重量％のモリブデンおよび約９８〜約９９．６重量％の鉄を含んでいる。冶金
用粉末組成物中の鉄、モリブデン、炭素および銅の割合は例えば元素分析によっ
て決定することができる。In a preferred embodiment of the invention, the metallurgical powder composition comprises from about 10 to about 20% by weight.
An iron-molybdenum prealloy powder, about 80 to about 90% by weight of substantially pure iron powder, about 0.1 to about 1.2% by weight of carbon, which is preferably a graphite powder, and about 0.1. It contains about 3.0% by weight of copper, which is preferably a copper-containing powder. In this embodiment, the iron-molybdenum prealloy powder is preferably about 0.4 to about 2.
It contains 0 wt% molybdenum and about 98 to about 99.6 wt% iron. The proportions of iron, molybdenum, carbon and copper in the metallurgical powder composition can be determined, for example, by elemental analysis.
【００５０】
本発明によればまた冶金用粉末組成物の製造法が提供される。本発明の方法に
おいては、好ましくは以前に本明細書において説明した方法に従って製造された
鉄−合金粉末が提供される。鉄−合金粉末は上記に説明した量において実質的に
純粋な鉄粉末および好ましくは炭素粉末と混合され、本発明の冶金用粉末組成物
がつくられる。さらに他の添加剤は上記に説明した量で冶金用粉末組成物に加え
ることができる。例えば合金化粉末、潤滑剤、接合剤、機械加工剤、可塑剤、ま
たは他の通常の冶金用粉末添加剤の任意の組み合わせを加えることができる。The invention also provides a method of making a powder composition for metallurgy. In the method of the present invention, an iron-alloy powder is provided, preferably produced according to the method previously described herein. The iron-alloy powder is mixed with the substantially pure iron powder and preferably carbon powder in the amounts described above to form the metallurgical powder composition of the present invention. Still other additives can be added to the metallurgical powder composition in the amounts described above. For example, any combination of alloying powders, lubricants, cements, machining agents, plasticizers, or other conventional metallurgical powder additives can be added.
【００５１】
鉄−合金粉末、実質的に純粋な鉄粉末、炭素粉末および他の所望の添加剤を組
み合わせる方法は、当業界の専門家に公知の任意の方法に従って行うことができ
る。使用する方法によって容易には偏析しない均一に混合した冶金用粉末組成物
が得られることが好ましい。さらに鉄−合金粉末、実質的に純粋な鉄粉末、炭素
粉末および他の所望の添加剤を添加する順序は重要ではない。しかしこの添加順
序は冶金用粉末組成物の均一な混合物が得られるような順序であることが好まし
い。The method of combining the iron-alloy powder, the substantially pure iron powder, the carbon powder and other desired additives can be performed according to any method known to those skilled in the art. Depending on the method used, it is preferable to obtain a uniformly mixed metallurgical powder composition that does not easily segregate. Furthermore, the order of adding the iron-alloy powder, the substantially pure iron powder, the carbon powder and other desired additives is not important. However, the order of addition is preferably such that a uniform mixture of the metallurgical powder composition is obtained.
【００５２】
好適具体化例においては、本発明方法は冶金用粉末組成物に接合剤を添加して
鉄−合金粉末、実質的に純粋な鉄粉末および他の偏析を阻止する添加剤をを接合
する工程を含んでいる。接合剤は当業界の専門家に公知の方法で添加することが
できる。例えばＳｅｍｅｌの米国特許４，８３４，８００号、Ｅｎｇｓｔｒｏｍ
の米国特許４，４８３，９０５号、Ｒｕｔｚ等の米国特許５，１５４，８８１号
およびＳｅｍｅｌ等の米国特許５，２９８，０５５号、並びに１９９９年４月２
９日公開の国際特許公開明細書９９／２０５８９号に記載された方法を使用する
ことができる。これらの特許は参考のために添付されている。好ましくは接合剤
は液体の形で加え、粉末が良好に湿潤するまで粉末と混合する。周囲条件下にお
いて液体の形をした接合剤を粉末そのものに加えることができるが、接合剤は液
体または固体を問わず、有機溶媒中に溶解または分散させて液体溶液として添加
し、混合物中に接合剤が実質的に均一に分布させることが好ましい。しかる後湿
った粉末を通常の方法で処理して溶媒を除去する。典型的には、混合物が少量で
一般に５ポンドまたはそれよりも少ない場合には、湿った粉末を浅い皿の上に広
げ、空気中で乾燥させる。他方多量の混合物の場合には熱および真空を用いるこ
とにより混合容器中で乾燥工程を行うことができる。In a preferred embodiment, the method of the present invention comprises adding a bonding agent to a metallurgical powder composition to bond iron-alloy powder, substantially pure iron powder and other segregation inhibiting additives. It includes the process of doing. The binder can be added by methods known to those skilled in the art. See, for example, Semel U.S. Pat. No. 4,834,800, Engstrom.
U.S. Pat. No. 4,483,905, Rutz et al., U.S. Pat. No. 5,154,881, and Semel et al., U.S. Pat. No. 5,298,055, and Apr. 2, 1999.
The method described in International Patent Publication No. 99/20589 published on 9th may be used. These patents are included for reference. Preferably the binder is added in liquid form and mixed with the powder until the powder is well wetted. Under ambient conditions, a binder in the form of a liquid can be added to the powder itself, but the binder, whether liquid or solid, is dissolved or dispersed in an organic solvent and added as a liquid solution to bond the mixture. It is preferred that the agent be distributed substantially uniformly. The moist powder is then treated in the usual way to remove the solvent. Typically, if the mixture is small, generally 5 pounds or less, the moist powder is spread on a shallow dish and dried in air. On the other hand, in the case of a large amount of mixture, the drying step can be carried out in the mixing vessel by using heat and vacuum.
【００５３】
また接合剤と潤滑剤との添加の順序を必要に応じ変えて冶金用粉末組成物の最
終的な特性を変化させることができる。例えばＳｅｍｅｌ等の米国特許５，２５
６，１８５号に記載された方法を使用することができる。この特許は参考のため
に添付されている。また例えば潤滑剤を鉄−合金粉末、実質的に純粋な鉄粉末、
炭素粉末、合金化粉末、および他の随時使用される添加剤と配合した後、この組
成物の中に接合剤を混合することができる。他の方法では潤滑剤の一部、好まし
くは約５０〜約９９重量％、さらに好ましくは約７５〜約９５重量％を鉄−合金
粉末、実質的に純粋な鉄粉末および他の添加剤の混合物に加えた後、接合剤を加
え、その後で溶媒を除去し、次いで残りの潤滑剤を金属粉末組成物に加える。さ
らに他の方法においては、鉄−合金粉末および他の添加剤の混合物に先ず接合剤
を加え、溶媒を除去し、次いで全量の潤滑剤を加える。Further, the order of addition of the bonding agent and the lubricant can be changed as necessary to change the final properties of the metallurgical powder composition. For example, US Pat. No. 5,25 to Semel et al.
The method described in 6,185 can be used. This patent is attached for reference. Also, for example, the lubricant may be an iron-alloy powder, a substantially pure iron powder,
The binder may be incorporated into the composition after blending with the carbon powder, alloying powder, and other optional additives. Alternatively, a portion of the lubricant, preferably about 50 to about 99% by weight, more preferably about 75 to about 95% by weight, of a mixture of iron-alloy powder, substantially pure iron powder and other additives. To the metal powder composition, then the binder is added, after which the solvent is removed and the remaining lubricant is then added to the metal powder composition. In yet another method, the binder is first added to the mixture of iron-alloy powder and other additives, the solvent is removed, and then the entire amount of lubricant is added.
【００５４】
このようにしてつくられた本発明の冶金用粉末組成物は金属部材をつくる標準
的な冶金技術に従ってダイス型の中で緻密化することができる。典型的な緻密化
の圧力は約５〜２００トン／平方インチ（ｔｓｉ）（６９〜２７６０ＭＰａ）、
好ましくは約２０〜１００ｔｓｉ（２７６〜１３７９ＭＰａ）、さらに好ましく
は約２５〜６０ｔｓｉ（３４５〜８２８ＭＰａ）である。The metallurgical powder composition of the present invention thus produced can be densified in a die mold according to standard metallurgical techniques for making metal parts. Typical densification pressures are about 5-200 tonnes per square inch (tsi) (69-2760 MPa),
It is preferably about 20 to 100 tsi (276 to 1379 MPa), more preferably about 25 to 60 tsi (345 to 828 MPa).
【００５５】
緻密化の後でこの部材を標準的な冶金技術に従いその冶金用粉末組成物に対し
て適切な温度、焼結時間または他の条件下において焼結することができる。例え
ば一好適具体化例においては、焼結温度は約１９００〜約２４００°Ｆであり、
冶金学的な結合および合金化が達成されるのに十分な時間の間焼結を行う。冶金
用粉末組成物はまた当業界の専門家には公知の方法により二重プレスおよび二重
焼結を行うことができる。After densification, the part can be sintered according to standard metallurgical techniques at temperatures, sintering times or other conditions appropriate for the metallurgical powder composition. For example, in one preferred embodiment, the sintering temperature is from about 1900 to about 2400 ° F.
Sintering is carried out for a time sufficient to achieve metallurgical bonding and alloying. The metallurgical powder composition can also be double pressed and double sintered by methods known to those skilled in the art.
【００５６】
種々の形をした種々の用途をもつ金属部材を本発明の冶金用粉末組成物からつ
くることができる。例えば自動車用、宇宙空間用或いは核エネルギー産業用の金
属部材を成形することができる。Metal parts having different shapes and different uses can be made from the metallurgical powder composition of the present invention. For example, metal members for automobiles, outer space, or the nuclear energy industry can be formed.
【００５７】
本発明方法でつくられた冶金用粉末組成物は予想外に優れた機械加工特性をも
っていることが見出だされた。冶金用粉末組成物が約１０〜３０重量％の鉄−モ
リブデン予備合金粉末、約７０〜約９０重量％の実質的に純粋な鉄粉末、約０．
１〜約３．０重量％の炭素粉末、および約０．１〜約３．０重量％の銅含有粉末
を含んでいる場合に特にこれらの改善が観測される。好ましくは鉄−モリブデン
予備合金は約０．４０〜約２．０重量％のモリブデンおよび約９８〜約９９．６
重量％の鉄を含んでいる。冶金用粉末組成物の中に例えば硫化マンガンのような
機械加工剤を存在させることにより機械加工性をさらに増強することができる。It has been found that the metallurgical powder composition made by the method of the present invention has unexpectedly excellent machining properties. The metallurgical powder composition comprises about 10 to 30 wt% iron-molybdenum prealloy powder, about 70 to about 90 wt% substantially pure iron powder, about 0.
These improvements are observed especially when including 1 to about 3.0 wt% carbon powder, and about 0.1 to about 3.0 wt% copper-containing powder. Preferably, the iron-molybdenum prealloy is about 0.40 to about 2.0% by weight molybdenum and about 98 to about 99.6.
Contains iron by weight. Machinability can be further enhanced by the presence of a machining agent, such as manganese sulfide, in the metallurgical powder composition.
【００５８】
（実施例）
下記の実施例を用い本発明のいくつかの具体化例を下記に詳細に例示する。本
発明方法に従って鉄をベースにした冶金用粉末組成物をつくった。また対照用の
金属粉末組成物もつくった。つくられた粉末組成物を緻密化し焼結して金属部材
をつくり機械加工性について評価を行った。EXAMPLES Some embodiments of the present invention will be illustrated in detail below using the following examples. An iron-based powder metallurgical composition was prepared according to the method of the present invention. A control metal powder composition was also made. The powder composition thus prepared was densified and sintered to form a metal member, and machinability was evaluated.
【００５９】 対照例１〜２および実施例３〜１０ 下記表１に示した組成をもつ冶金用粉末組成物をつくった。[0059] Control Examples 1-2 and Examples 3-10 A metallurgical powder composition having the composition shown in Table 1 below was prepared.
【００６０】[0060]
【表１】 [Table 1]
【００６１】
すべての成分を表１に示した量で均一に配合することにより組成物をつくった
。すべての実施例に使用した鉄の粉末は米国ニュージャージー州、Ｃｉｎｎａｍ
ｉｎｓｏｎ在のＨｏｅｇａｎａｅｓ Ｃｏｒｐｏｒａｔｉｏｎ製のＡｎｃｏｒｓ
ｔｅｅｌ １０００Ａであった。すべての実施例に使用した鉄−合金粉末はＨｏ
ｅｇａｎａｅｓ Ｃｏｒｐｏｒａｔｉｏｎ製のＡｎｃｏｒｓｔｅｅｌTM ８５Ｈ
Ｐ鋼粉末であった。ＡｎｃｏｒｓｔｅｅｌTM ８５ＨＰは約０．８５重量％のモ
リブデンを含む鉄−モリブデン予備合金粉末である。すべての実施例に使用した
グラファイト（表１に「炭素」として示す）は重量平均粒径が約６〜８μであり
、米国ニュージャージー州、Ａｓｂｕｒｙ在のＡｓｂｕｒｙ Ｇｒａｐｈｉｔｅ
Ｍｉｌｌｓ，Ｉｎｃ製であった。すべての実施例に使用した銅粉末（表１に「
Ｃｕ」として示されている）はＡｃｃｕｐｏｗｄｅｒ Ｃｏｒｐｏｒａｔｉｏｎ
製のＡｃｃｕｐｏｗｄｅｒであった。この銅粉末は重量平均粒径が約１０〜１４
μ、純度が９９．５重量％であった。表１で「ＭｎＳ」として示されているのは
機械加工剤の硫化マンガンである。表１で示された潤滑剤はＡｃｒｗａｘTM Ｃ
潤滑剤である。Ａｃｒｗａｘ Ｃは米国ニュージャージー州、Ｆａｉｒ Ｌａｗ
ｎ在のＡｌｇｒｏｕｐ Ｌｏｎｚａ製であった。A composition was made by uniformly blending all the ingredients in the amounts shown in Table 1. The iron powder used in all examples was Cinnam, NJ, USA
Ancors from Hoeganaes Corporation in inson
It was a steel 1000A. The iron-alloy powder used in all the examples was Ho.
Ancorsteel ™ 85H from Eganae's Corporation
It was P steel powder. Ancorsteel ™ 85HP is an iron-molybdenum prealloy powder containing about 0.85% by weight molybdenum. The graphite used in all of the examples (shown as "carbon" in Table 1) had a weight average particle size of about 6-8 microns and was manufactured by Asbury Graphite, Asbury, NJ, USA.
It was manufactured by Mills, Inc. The copper powder used in all the examples ("
(Denoted as "Cu") is Accu powder Corporation
It was an Accu powder made by. This copper powder has a weight average particle size of about 10 to 14
μ, and the purity was 99.5% by weight. Indicated in Table 1 as "MnS" is the machining agent manganese sulfide. The lubricants shown in Table 1 are Acrwax ™ C
It is a lubricant. Acrwax C is Fair Law, NJ, USA
It was manufactured by Algroup Lonza Co., Ltd.
【００６２】
実施例１１
対照例１〜２および実施例３〜１０の金属粉末組成物を機械加工性について評
価した。Example 11 The metal powder compositions of Controls 1-2 and Examples 3-10 were evaluated for machinability.
【００６３】
機械加工性を評価するために表１の各冶金用粉末組成物を緻密化し、直径４イ
ンチ、厚さ１インチ、密度６．８ｇ／ｃｍ3の円板にした。この円板を水素１０
％、窒素９０％の雰囲気の中で２０５０°Ｆで３０分間焼結し、周囲温度まで冷
却した。In order to evaluate machinability, each metallurgical powder composition shown in Table 1 was densified into a disk having a diameter of 4 inches, a thickness of 1 inch and a density of 6.8 g / cm 3 . This disk is hydrogen 10
%, Nitrogen 90%, sintered at 2050 ° F. for 30 minutes and cooled to ambient temperature.
【００６４】
機械加工性試験を行う前に、次の方法で各ドリルの刃を較正した。直径０．２
５インチのドリルの刃２０本を使って表１の「対照」粉末からつくられた円板に
深さ０．９５インチの孔を穿孔する。各ドリルの刃を使って約２〜３個の孔をあ
け、全部で約４０〜６０個の孔を穿孔する。各孔は１回転当たり０．００５イン
チの供給速度および２２２０ｒｐｍの切断速度で穿孔した。穿孔の際ドリルのト
ルクおよびドリルの推力を各ドリルの刃に対して自動的に測定し、すべての測定
値に対してドリルのトルクおよび推力の平均値を計算した。ドリルのトルクおよ
び推力が平均値の±５％の範囲内に入るドリルだけを機械加工性の試験に使用し
た。Before performing the machinability test, the blade of each drill was calibrated by the following method. Diameter 0.2
A disk made from the "control" powder of Table 1 is drilled with a 5 inch drill blade to form a 0.95 inch deep hole. The blade of each drill is used to drill about 2-3 holes, for a total of about 40-60 holes. Each hole was drilled at a feed rate of 0.005 inches per revolution and a cutting speed of 2220 rpm. During drilling, the torque of the drill and the thrust of the drill were measured automatically for each blade of each drill, and the average value of the torque and the thrust of the drill was calculated for all measured values. Only drills with torque and thrust within ± 5% of the average value were used for machinability testing.
【００６５】
ドリルの刃を較正したのと同じ装置を使用し、表１に示した冶金用粉末組成物
の各々からつくられた円板を、ドリルの刃が駄目になるまで（例えば摩耗度が予
め定められたレベルを超えるまで）深さ０．９５インチの孔を穿孔する。穿孔さ
れた各孔に対し、１回転当たり０．００５インチの供給速度および２２２おｒｐ
ｍの切断速度を使用した。全試験を通じドリルのトルクおよびドリルの推力を測
定し、１０個の孔を穿孔する毎に摩耗を測定した。摩耗の測定は英国Ｓｕｒｒｅ
ｙ在のＶｉｓｉｏｎ Ｅｎｇｉｎｅｅｒｉｎｇ製のＭｉｃｒｏｄｙｎａｓｃｏｐ
ｅ Ｍｏｄｅｌ ５Ｅ Ｕｎｉｖｅｒｓａｌ Ｉｎｓｐｅｃｔｉｏｎ ａｎｄ
Ｇａｕｇｉｎｇ Ｓｙｓｔｅｍにより行った。機械加工性の試験結果を表２に示
す。平均推力はドリルの刃が駄目になる前に穿孔されたすべての孔に対する推力
の平均値である。表２はまた平均の推力を計算するのに使用された駄目になるま
で穿孔された孔の数を示す。駄目になるまでの穿孔された孔の数は部分的に材料
の強度に依存している（強度が増加すると駄目になるまでに穿孔された孔の数は
減少する）。Using the same equipment in which the drill blades were calibrated, discs made from each of the metallurgical powder compositions shown in Table 1 were used until the drill blades failed (eg Drill holes 0.95 inches deep (up to a predetermined level). Feed rate of 0.005 inches per revolution and 222 rp for each hole drilled
A cutting speed of m was used. Throughout the entire test, the torque of the drill and the thrust of the drill were measured, and the wear was measured after every 10 holes were drilled. Wear measurement by Surre, UK
Micro Engineering from Vision Engineering, Inc.
e Model 5E Universal Inspection and
It was performed by the Gauging System. The machinability test results are shown in Table 2. The average thrust is the average thrust value for all the holes drilled before the drill blade failed. Table 2 also shows the number of holes drilled to failure used to calculate the average thrust. The number of holes drilled to failure depends in part on the strength of the material (increasing the strength reduces the number of holes drilled to failure).
【００６６】[0066]
【表２】 [Table 2]
【００６７】
表２の結果は、冶金用粉末組成物に鉄−合金粉末を加えると円板を穿孔する際
のドリルの刃の平均推力が減少することを示している。例えば、鉄をベースにし
た粉末組成物に硫化マンガンを加えることにより平均推力を或る程度減少させる
ことができる（対照例２と対比して対照例１を参照のこと）が、鉄−合金粉末を
加えることによってさらに改善を得ることができる。対照例１および２並びに実
施例５に対して得られた平均推力に対する結果を図１に示す。図１は対照例１お
よび２並びに実施例５からつくられた円板に対する平均推力を示す棒グラフであ
る。平均推力を減少させることによってドリルの刃の摩耗が少なくなり、従って
ドリルの刃の寿命を延ばす利点が得られる。The results in Table 2 show that the addition of iron-alloy powder to the metallurgical powder composition reduces the average thrust of the drill blade when drilling a disc. For example, the average thrust can be reduced to some extent by adding manganese sulfide to an iron-based powder composition (see Control Example 1 as compared to Control Example 2), but iron-alloy powders. Further improvement can be obtained by adding. The results for the average thrust obtained for Controls 1 and 2 and Example 5 are shown in FIG. FIG. 1 is a bar graph showing average thrust for discs made from Controls 1 and 2 and Example 5. Reducing the average thrust results in less wear on the drill blade and therefore the benefit of extending the life of the drill blade.
【００６８】
以上本発明の改善された冶金用粉末組成物およびその製造法並びに使用に関し
て或る種の好適具体化例を説明した。好適な具体化例を記載し説明したが、当業
界の専門家は本発明の精神および範囲を逸脱することなくこれらの種々の変形お
よび変更を行い得ることを認識されたい。添付特許請求の範囲はこれらのすべて
の変形および変更を包含するものである。Certain preferred embodiments of the improved metallurgical powder composition of the present invention and methods of making and using the same have been described above. While the preferred embodiment has been described and described, it will be appreciated by those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. The appended claims are intended to cover all such variations and modifications.
【図１】
鉄−合金粉末を含まない冶金用粉末組成物（対照例１および２）からつくられ
た金属部材と対比して、本発明の冶金用粉末組成物（実施例５）からつくられた
金属部材を穿孔する際の平均推力（ポンド単位）を示すグラフ。1 is made from a metallurgical powder composition of the invention (Example 5) in contrast to metal parts made from a metallurgical powder composition without iron-alloy powder (Controls 1 and 2). The graph which shows the average thrust (unit of pound) at the time of piercing the metal member which carried out.
【手続補正書】特許協力条約第１９条補正の翻訳文提出書[Procedure Amendment] Patent Cooperation Treaty Article 19 Amendment Translation Form
【提出日】平成１３年３月２１日（２００１．３．２１）[Submission date] March 21, 2001 (2001.3.21)
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Name of item to be amended] Claims
【補正方法】変更[Correction method] Change
【補正の内容】[Contents of correction]
【特許請求の範囲】[Claims]
【請求項１６】 緻密化した金属部材を少なくとも１９００°Ｆの温度で焼
結して機械加工可能な焼結した金属部材をつくることを特徴とする請求項１５記
載の方法。16. The method of claim 15 wherein the densified metal member is sintered at a temperature of at least 1900 ° F. to produce a machinable sintered metal member.
【手続補正書】特許協力条約第３４条補正の翻訳文提出書[Procedure for Amendment] Submission for translation of Article 34 Amendment of Patent Cooperation Treaty
【提出日】平成１３年１２月１４日（２００１．１２．１４）[Submission date] December 14, 2001 (2001.12.14)
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Name of item to be amended] Claims
【補正方法】変更[Correction method] Change
【補正の内容】[Contents of correction]
【特許請求の範囲】[Claims]
【請求項３】 モリブデンは鉄−合金粉末中において該鉄−合金粉末の全重
量に関し約０．１〜約２．０重量％の量で存在することを特徴とする請求項１記
載の方法。 3. The method of claim 1 wherein molybdenum is present in the iron-alloy powder in an amount of about 0.1 to about 2.0% by weight, based on the total weight of the iron-alloy powder.
【請求項４】 該冶金用粉末組成物はさらに少なくとも１種の合金化粉末を
含んでいることを特徴とする請求項１記載の方法。 4. The method of claim 1, wherein the metallurgical powder composition further comprises at least one alloying powder.
【請求項５】 該合金化粉末は銅、ニッケルまたはその組み合わせを含んで
いることを特徴とする請求項４記載の方法。 5. The method of claim 4 , wherein the alloying powder comprises copper, nickel or a combination thereof.
【請求項６】 該冶金用粉末組成物はさらに銅、ニッケル、グラファイト、
硫化マンガンまたはそれらの組み合わせを含んでいることを特徴とする請求項１
記載の方法。 6. The powder composition for metallurgy further comprises copper, nickel, graphite,
2. Manganese sulfide or a combination thereof is included.
The method described.
【請求項７】 該冶金用粉末組成物は該冶金用粉末組成物の全重量に関し約
１０〜約３０重量％の鉄−合金粉末を含み、該鉄−合金粉末は該鉄−合金粉末の
全重量に関し約０．１〜約２重量％のモリブデンを含んでいることを特徴とする
請求項１記載の方法。 7. The metallurgical powder composition comprises from about 10 to about 30% by weight of iron-alloy powder, based on the total weight of the metallurgical powder composition, the iron-alloy powder comprising all of the iron-alloy powder. The method of claim 1 comprising from about 0.1 to about 2 weight percent molybdenum, by weight.
【請求項８】 該冶金用粉末組成物は該冶金用粉末組成物の全重量に関し約
７０〜約９５重量％の実質的に純粋な鉄粉末、約０．１〜約３重量％の炭素、お
よび約０．１０〜約３．０重量％の銅を含んでいることを特徴とする請求項７記
載の方法。 8. The metallurgical powder composition comprises about 70 to about 95% by weight of substantially pure iron powder, about 0.1 to about 3% by weight of carbon, based on the total weight of the metallurgical powder composition. 8. The method of claim 7 including about 0.10 to about 3.0 wt.% Copper.
【請求項９】 （ａ）冶金用粉末組成物の重量に関し（ｉ）鉄および少なく
とも１種の合金化添加剤から成る鉄−合金粉末であって、ここで該鉄−合金粉末
の全重量に関し該合金化添加剤は約０．０１〜約７重量％存在し、鉄は少なくと
も８５重量％存在し、該鉄−合金粉末中の該合金化添加剤はモリブデンを含む鉄
−合金粉末約１０〜約４０重量％、
（ｉｉ）実質的に純粋な鉄粉末少なくとも５５重量％、および
（ｉｉｉ）炭素少なくとも約０．１重量％を含む冶金用粉末組成物をつくり、
（ｂ）少なくとも約５ｔｓｉの圧力をかけて該冶金用粉末組成物を緻密化して
金属部材をつくる工程から成ることを特徴とする金属部材の製造法。 9. (a) iron consists, based on the weight of the metallurgical powder composition (i) iron and at least one alloying additive - an alloy powder, wherein the iron -, based on the total weight of the alloy powder The alloying additive is present from about 0.01 to about 7% by weight, the iron is present at least 85% by weight , and the alloying additive in the iron-alloy powder is about 10 to about 10% iron-alloy powder including molybdenum. Making a metallurgical powder composition comprising about 40% by weight, (ii) at least 55% by weight of substantially pure iron powder, and (iii) at least about 0.1% by weight of carbon; (b) a pressure of at least about 5 tsi. And a step of densifying the powder composition for metallurgy to produce a metal member.
【請求項１０】 該合金化添加剤はモリブデンであってそれは該鉄−合金粉
末の全重量に関し約０．１〜約３．０重量％の量で該鉄−合金粉末中に存在する
ことを特徴とする請求項９記載の方法。 10. The alloying additive is molybdenum, which is present in the iron-alloy powder in an amount of about 0.1 to about 3.0% by weight, based on the total weight of the iron-alloy powder. The method of claim 9 characterized.
【請求項１１】 緻密化した金属部材を少なくとも１９００°Ｆの温度で焼
結して機械加工可能な焼結した金属部材をつくることを特徴とする請求項１０記
載の方法。 11. The method of claim 10, wherein the densified metal member is sintered at a temperature of at least 1900 ° F making machinable sintered metal member.
【請求項１２】 冶金用粉末組成物は該冶金用粉末組成物の全重量に関し約 １０〜約３０重量％の鉄−合金粉末を含んでいることを特徴とする請求項１記載 の方法。 12. The method of claim 1 wherein the metallurgical powder composition comprises from about 10 to about 30 weight percent iron-alloy powder, based on the total weight of the metallurgical powder composition .
【請求項１３】 冶金用粉末組成物は該冶金用粉末組成物の全重量に関し約 １０〜約３０重量％の鉄−合金粉末を含んでいることを特徴とする請求項９記載 の方法。 13. The method of claim 9 wherein the metallurgical powder composition comprises from about 10 to about 30 weight percent iron-alloy powder, based on the total weight of the metallurgical powder composition .
───────────────────────────────────────────────────── フロントページの続き (81)指定国 ＥＰ(ＡＴ，ＢＥ，ＣＨ，ＣＹ， ＤＥ，ＤＫ，ＥＳ，ＦＩ，ＦＲ，ＧＢ，ＧＲ，ＩＥ，Ｉ Ｔ，ＬＵ，ＭＣ，ＮＬ，ＰＴ，ＳＥ)，ＯＡ(ＢＦ，ＢＪ ，ＣＦ，ＣＧ，ＣＩ，ＣＭ，ＧＡ，ＧＮ，ＧＷ，ＭＬ， ＭＲ，ＮＥ，ＳＮ，ＴＤ，ＴＧ)，ＡＰ(ＧＨ，ＧＭ，Ｋ Ｅ，ＬＳ，ＭＷ，ＭＺ，ＳＤ，ＳＬ，ＳＺ，ＴＺ，ＵＧ ，ＺＷ)，ＥＡ(ＡＭ，ＡＺ，ＢＹ，ＫＧ，ＫＺ，ＭＤ， ＲＵ，ＴＪ，ＴＭ)，ＡＥ，ＡＧ，ＡＬ，ＡＭ，ＡＴ， ＡＵ，ＡＺ，ＢＡ，ＢＢ，ＢＧ，ＢＲ，ＢＹ，ＢＺ，Ｃ Ａ，ＣＨ，ＣＮ，ＣＲ，ＣＵ，ＣＺ，ＤＥ，ＤＫ，ＤＭ ，ＤＺ，ＥＥ，ＥＳ，ＦＩ，ＧＢ，ＧＤ，ＧＥ，ＧＨ， ＧＭ，ＨＲ，ＨＵ，ＩＤ，ＩＬ，ＩＮ，ＩＳ，ＪＰ，Ｋ Ｅ，ＫＧ，ＫＰ，ＫＲ，ＫＺ，ＬＣ，ＬＫ，ＬＲ，ＬＳ ，ＬＴ，ＬＵ，ＬＶ，ＭＡ，ＭＤ，ＭＧ，ＭＫ，ＭＮ， ＭＷ，ＭＸ，ＭＺ，ＮＯ，ＮＺ，ＰＬ，ＰＴ，ＲＯ，Ｒ Ｕ，ＳＤ，ＳＥ，ＳＧ，ＳＩ，ＳＫ，ＳＬ，ＴＪ，ＴＭ ，ＴＲ，ＴＴ，ＴＺ，ＵＡ，ＵＧ，ＵＺ，ＶＮ，ＹＵ， ＺＡ，ＺＷ─────────────────────────────────────────────────── ─── Continued front page (81) Designated countries EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, I T, LU, MC, NL, PT, SE), OA (BF, BJ , CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, K E, LS, MW, MZ, SD, SL, SZ, TZ, UG , ZW), EA (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, C A, CH, CN, CR, CU, CZ, DE, DK, DM , DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, K E, KG, KP, KR, KZ, LC, LK, LR, LS , LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, R U, SD, SE, SG, SI, SK, SL, TJ, TM , TR, TT, TZ, UA, UG, UZ, VN, YU, ZA, ZW
Claims (16)
合金粉末をつくり、ここで該鉄−合金粉末の全重量に関し該合金化添加剤は約０
．０１〜約７重量％存在し、鉄は少なくとも８５重量％存在するようにし、 （ｂ）該鉄−合金粉末を実質的に純粋な鉄粉末および炭素と混合して冶金用粉
末組成物をつくり、ここで該冶金用粉末組成物は該冶金用粉末組成物の全重量に
関し約５〜約４０重量％の鉄−合金粉末、少なくとも５５重量％の実質的に純粋
な鉄粉末、および少なくとも０．１重量％の炭素を含むようにする工程から成る
ことを特徴とする冶金用粉末組成物の製造法。1. An iron comprising (a) iron and at least one alloying additive-
An alloy powder is prepared, wherein the alloying additive is about 0 based on the total weight of the iron-alloy powder.
． 01 to about 7% by weight and at least 85% by weight iron, and (b) mixing the iron-alloy powder with substantially pure iron powder and carbon to form a metallurgical powder composition, Wherein the metallurgical powder composition comprises from about 5 to about 40 weight percent iron-alloy powder, at least 55 weight percent substantially pure iron powder, and at least 0.1 weight percent based on the total weight of the metallurgical powder composition. A process for producing a metallurgical powder composition, which comprises the step of including carbon in an amount of% by weight.
ジン、タングステンおよびこれらの組み合わせから成る群から選ばれることを特
徴とする請求項１記載の方法。2. The method of claim 1 wherein the alloying additive in the iron-alloy powder is selected from the group consisting of molybdenum, chromium, vanadine, tungsten and combinations thereof.
記載の方法。3. The alloying additive is molybdenum.
The method described.
量に関し約０．１〜約２．０重量％の量で存在することを特徴とする請求項３記
載の方法。4. The method of claim 3 wherein molybdenum is present in the iron-alloy powder in an amount of about 0.1 to about 2.0% by weight based on the total weight of the iron-alloy powder.
含んでいることを特徴とする請求項１記載の方法。5. The method of claim 1, wherein the metallurgical powder composition further comprises at least one alloying powder.
いることを特徴とする請求項５記載の方法。6. The method of claim 5, wherein the alloying powder comprises copper, nickel or a combination thereof.
硫化マンガンまたはそれらの組み合わせを含んでいることを特徴とする請求項１
記載の方法。7. The metallurgical powder composition further comprises copper, nickel, graphite,
2. Manganese sulfide or a combination thereof is included.
The method described.
１０〜約３０重量％の鉄−合金粉末を含み、該鉄−合金粉末は該鉄−合金粉末の
全重量に関し約０．１〜約２重量％のモリブデンを含んでいることを特徴とする
請求項１記載の方法。8. The metallurgical powder composition comprises from about 10 to about 30% by weight, based on the total weight of the metallurgical powder composition, of an iron-alloy powder, the iron-alloy powder comprising all of the iron-alloy powder. The method of claim 1 comprising from about 0.1 to about 2 weight percent molybdenum, by weight.
７０〜約９５重量％の実質的に純粋な鉄粉末、約０．１〜約３重量％の炭素、お
よび約０．１０〜約３．０重量％の銅を含んでいることを特徴とする請求項８記
載の方法。9. The metallurgical powder composition comprises about 70 to about 95% by weight of substantially pure iron powder, about 0.1 to about 3% by weight of carbon, based on the total weight of the metallurgical powder composition. 9. The method of claim 8 including about 0.10 to about 3.0 wt% copper.
末であって該鉄−モリブデン合金粉末の重量に関しモリブデンの量は約０．１０
〜約７．０重量％であり、鉄の量は少なくとも８５重量％である鉄−モリブデン
合金粉末約５〜約４０重量％、 （ｂ）実質的に純粋な鉄粉末少なくとも５５重量％、および （ｃ）炭素約０．１〜約３重量％を含有していることを特徴とする改善された
冶金用粉末組成物。10. (a) An iron-molybdenum alloy powder comprising iron and molybdenum, wherein the amount of molybdenum is about 0.10 with respect to the weight of the iron-molybdenum alloy powder.
To about 7.0 wt% and the amount of iron is at least 85 wt% about 5 to about 40 wt% iron-molybdenum alloy powder, (b) at least 55 wt% substantially pure iron powder, and c) An improved metallurgical powder composition, characterized in that it contains from about 0.1 to about 3% by weight of carbon.
を含んでいることを特徴とする請求項１０記載の冶金用粉末組成物。11. The metallurgical powder composition according to claim 10, wherein the metallurgical powder composition further comprises at least one alloying powder.
、硫化マンガンまたはそれらの組み合わせを含んでいることを特徴とする請求項
１０記載の冶金用粉末組成物。12. The metallurgical powder composition according to claim 10, further comprising nickel, copper, graphite, manganese sulfide, or a combination thereof.
１０〜約３０重量％の鉄−モリブデン合金粉末、約７０〜約９５重量％の実質的
に純粋な鉄粉末、約０．１〜約２重量％の炭素、および約０．１０〜約３．０重
量％の銅を含んでいることを特徴とする請求項１０記載の冶金用粉末組成物。13. The metallurgical powder composition comprises 10 to about 30 wt% iron-molybdenum alloy powder, about 70 to about 95 wt% substantially pure iron powder, based on the total weight of the metallurgical powder composition. 11. The metallurgical powder composition of claim 10, comprising: 0.1 to about 2 wt% carbon, and about 0.10 to about 3.0 wt% copper.
くとも１種の合金化添加剤から成る鉄−合金粉末であって、ここで該鉄−合金粉
末の全重量に関し該合金化添加剤は約０．０１〜約７重量％存在し、鉄は少なく
とも８５重量％存在する鉄−合金粉末約５〜約４０重量％、 （ｉｉ）実質的に純粋な鉄粉末少なくとも５５重量％、および （ｉｉｉ）炭素少なくとも約０．１重量％を含む冶金用粉末組成物をつくり、 （ｂ）少なくとも約５ｔｓｉの圧力をかけて該冶金用粉末組成物を緻密化して
金属部材をつくる工程から成ることを特徴とする金属部材の製造法。14. An iron-alloy powder comprising: (a) a weight of the metallurgical powder composition; (i) an iron-alloy powder comprising iron and at least one alloying additive, wherein the total weight of the iron-alloy powder. The alloying additive is present in an amount of about 0.01 to about 7% by weight and the iron is present in an amount of at least 85% by weight about 5 to about 40% by weight of the iron-alloy powder; %, And (iii) at least about 0.1% by weight of carbon to form a metallurgical powder composition, and (b) applying a pressure of at least about 5 tsi to densify the metallurgical powder composition to form a metal member. A method of manufacturing a metal member, comprising the steps of:
末の全重量に関し約０．１〜約３．０重量％の量で該鉄−合金粉末中に存在する
ことを特徴とする請求項１４記載の方法。15. The alloying additive is molybdenum, which is present in the iron-alloy powder in an amount of about 0.1 to about 3.0% by weight, based on the total weight of the iron-alloy powder. 15. The method of claim 14 characterized.
結して機械加工可能な焼結した金属部材をつくることを特徴とする請求項１５記
載の方法。16. The method of claim 15 wherein the densified metal member is sintered at a temperature of at least 1900 ° F. to produce a machinable sintered metal member.
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| US09/434,000 | 1999-11-04 | ||
| PCT/US2000/040594 WO2001032946A1 (en) | 1999-11-04 | 2000-08-08 | Improved metallurgical powder compositions and methods of making and using the same |
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| JP2003514112A true JP2003514112A (en) | 2003-04-15 |
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| US (1) | US20030103858A1 (en) |
| EP (1) | EP1246949B1 (en) |
| JP (1) | JP2003514112A (en) |
| KR (1) | KR100697534B1 (en) |
| AT (1) | ATE317458T1 (en) |
| AU (1) | AU7758000A (en) |
| DE (1) | DE60025931T2 (en) |
| MX (1) | MXPA02004478A (en) |
| WO (1) | WO2001032946A1 (en) |
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| KR101076353B1 (en) | 2006-08-28 | 2011-10-25 | 파나소닉 전공 주식회사 | Metal powder for metal-laser sintering and metal-laser sintering process using the same |
| JP2016035106A (en) * | 2010-05-19 | 2016-03-17 | ヘガナーズ・コーポレーション | Compositions and methods for improved dimensional control in ferrous powder metallurgy applications |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2001032946A1 (en) | 2001-05-10 |
| MXPA02004478A (en) | 2004-09-10 |
| AU7758000A (en) | 2001-05-14 |
| ATE317458T1 (en) | 2006-02-15 |
| KR100697534B1 (en) | 2007-03-20 |
| EP1246949A1 (en) | 2002-10-09 |
| EP1246949B1 (en) | 2006-02-08 |
| KR20020062637A (en) | 2002-07-26 |
| US20030103858A1 (en) | 2003-06-05 |
| DE60025931T2 (en) | 2006-08-31 |
| DE60025931D1 (en) | 2006-04-20 |
| EP1246949A4 (en) | 2004-04-14 |
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