CN106811656A - A kind of preparation method of tough modified high manganese steel base VC steel bonded carbide high - Google Patents
A kind of preparation method of tough modified high manganese steel base VC steel bonded carbide high Download PDFInfo
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- CN106811656A CN106811656A CN201710071617.6A CN201710071617A CN106811656A CN 106811656 A CN106811656 A CN 106811656A CN 201710071617 A CN201710071617 A CN 201710071617A CN 106811656 A CN106811656 A CN 106811656A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 67
- 239000010959 steel Substances 0.000 title claims abstract description 67
- 229910000617 Mangalloy Inorganic materials 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 109
- 239000000463 material Substances 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 40
- 238000005245 sintering Methods 0.000 claims abstract description 37
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 35
- 239000000956 alloy Substances 0.000 claims abstract description 35
- 238000011065 in-situ storage Methods 0.000 claims abstract description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000203 mixture Substances 0.000 claims abstract description 25
- 239000000126 substance Substances 0.000 claims abstract description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000011812 mixed powder Substances 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 20
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 15
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 14
- 229910000604 Ferrochrome Inorganic materials 0.000 claims abstract description 12
- 229910000616 Ferromanganese Inorganic materials 0.000 claims abstract description 12
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims abstract description 12
- 108010038629 Molybdoferredoxin Proteins 0.000 claims abstract description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000000498 ball milling Methods 0.000 claims abstract description 12
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims abstract description 12
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 12
- HBELESVMOSDEOV-UHFFFAOYSA-N [Fe].[Mo] Chemical compound [Fe].[Mo] HBELESVMOSDEOV-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002002 slurry Substances 0.000 claims abstract description 6
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract 3
- 239000011159 matrix material Substances 0.000 claims description 26
- 239000002994 raw material Substances 0.000 claims description 20
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 19
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 18
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 13
- 239000007769 metal material Substances 0.000 claims description 10
- 150000001247 metal acetylides Chemical class 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 5
- 238000010304 firing Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 4
- QFGIVKNKFPCKAW-UHFFFAOYSA-N [Mn].[C] Chemical compound [Mn].[C] QFGIVKNKFPCKAW-UHFFFAOYSA-N 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000011572 manganese Substances 0.000 claims description 2
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 claims description 2
- 239000000084 colloidal system Substances 0.000 claims 1
- 239000004615 ingredient Substances 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 239000012071 phase Substances 0.000 abstract description 48
- 239000002245 particle Substances 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 9
- 230000002708 enhancing effect Effects 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 239000007791 liquid phase Substances 0.000 abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052710 silicon Inorganic materials 0.000 abstract description 2
- 239000010703 silicon Substances 0.000 abstract description 2
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 description 12
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 9
- 239000013078 crystal Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 5
- 238000005452 bending Methods 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 5
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 5
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 description 4
- 229910033181 TiB2 Inorganic materials 0.000 description 4
- 239000011157 advanced composite material Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 238000004663 powder metallurgy Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 229910000997 High-speed steel Inorganic materials 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000000713 high-energy ball milling Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910003470 tongbaite Inorganic materials 0.000 description 2
- 229910000521 B alloy Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 229910001309 Ferromolybdenum Inorganic materials 0.000 description 1
- 229910001145 Ferrotungsten Inorganic materials 0.000 description 1
- 229910003178 Mo2C Inorganic materials 0.000 description 1
- -1 TiC Chemical class 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- RZJQYRCNDBMIAG-UHFFFAOYSA-N [Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Zn].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn] Chemical compound [Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Zn].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn] RZJQYRCNDBMIAG-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000000914 phenoxymethylpenicillanyl group Chemical group CC1(S[C@H]2N([C@H]1C(=O)*)C([C@H]2NC(COC2=CC=CC=C2)=O)=O)C 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009692 water atomization Methods 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1035—Liquid phase sintering
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/058—Mixtures of metal powder with non-metallic powder by reaction sintering (i.e. gasless reaction starting from a mixture of solid metal compounds)
-
- 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
-
- 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
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0292—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with more than 5% preformed carbides, nitrides or borides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/041—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by mechanical alloying, e.g. blending, milling
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention relates to a kind of preparation method of tough modified high manganese steel base VC steel bonded carbide high, it is characterised in that by V205 powder（Vanadium）Carry out being configured to fabricated in situ VC mixed-powders for 0.4~0.5 by C/ V205 atomic ratios with graphite powder；By molybdenum-iron powder, vanadium iron powder, ferrochrome powder, ferromanganese powder, ferrosilicon powder, iron powder, nickel powder, aquadag and the rare earths material proportions as needed for bonding phase metal chemical composition mass ratio, load steel ball ball milling, wherein adding absolute ethyl alcohol to make medium and PVA, compressing after slurry is dried after ball milling, sintering obtains steel-bonded carbide.With liquid phase sintering technology be combined in-situ reactive synthesis technology by the present invention, and because VC is that, in intrinsic silicon fabricated in situ, enhancing particle size is tiny by the reaction in sintering process, surface combines preferable and clean interfaces without wedge angle, basal body interface.Prepared steel-bonded carbide method can improve the comprehensive mechanical property of alloy, and cheap, and technique is easy.
Description
Invention field
The present invention relates to a kind of preparation method of tough modified high manganese steel base VC steel bonded carbide high, particularly with reaction
Sintering process produces tough modified high manganese steel base VC steel bonded carbide technical fields high.
Background of invention
Steel bonded carbide（Hereinafter referred to as steel-bonded carbide）It is that, with steel as matrix, tungsten carbide, titanium carbide etc. are used for hard phase
The high life mold materials between hard alloy and alloy tool steel, mould steel and high-speed steel of powder metallurgy process production
And engineering material.The ratio range of steel-bonded carbide steel matrix Binder Phase and hard phase quite it is extensive, this just determine it possess as
Lower excellent properties：1）Extensive processing performance, mainly can forgeability and machinable performance and heat-treatability and
Weldability.2）Good physical and mechanical properties, is mainly manifested in the wearability suitable with high-cobalt hart metal；Compared with steel
Rigidity high, elastic modelling quantity, bending strength and compression strength；The toughness higher compared with hard alloy；And good profit certainly
Slip and damping characteristic high etc..3）Excellent chemical stability, such as high temperature resistant, anti-oxidant, anti-various dielectric corrosions.Due to
The above-mentioned excellent combination property of steel-bonded carbide so that it is in tool die material, wear part, high temperature resistant and corrosion resistant member material
The aspects such as material more and more occupy consequence, and intermetallic composite coating, hardware electronics, automobile, machinery, metallurgy, chemical industry, ship,
It is used widely and obtains good result in the field such as Aero-Space and nuclear industry.Such as with alloy tool steel, mould steel and height
Fast steel is compared, and steel-bonded carbide can be such that die life number is increased substantially with ten times of ground, and economic benefit is also extremely notable.
In recent years, to obtain some particular tissues and performance of steel bonded carbide, and alleviate due to conventional rigid alloy
The problems such as material Main Resources W, Co are increasingly deficient, has carried out to steel bonded carbide ground with deep more extensively both at home and abroad
Study carefully, particularly to add different New Rigid phases research (such as addition A1203, TiN, NbC, TiCN, TiB2, Mo2FeB2,
Mo2C, Cr3C2, VC, NV etc.).In recent years, some new hard phase steel-bonded carbides are continued to bring out.Mitsubishi metal company
Using TiCN hardness is relatively low but the characteristics of very strong wearability, high speed comminuted steel shot is mixed with titanium carbonitride additive, shape, dewaxed,
Then the TiCN base steel-bonded carbides produced by high temperature insostatic pressing (HIP), heat treatment and method for fine finishing, with uniform microstructure, unbiased
Analysis, the characteristics of alloying level is high.Rubbing action is small between TiN and ferrite, and antisticking ability is more stronger than TiC, free energy
Smaller, oxidation resistance temperature scope is big.Sandvik AB of Sweden has developed a kind of new steel-bonded carbide based on TiN
CORONlTE.They use a kind of special process, and the TiN powder of superfine (about 0.1 micron) is equably added and can be heat-treated
Steel matrix in, its volume content can be from 35% to 60%, because TiN powder is thin and performance and its stabilization, by this method
Obtained CORONITE alloys have the wearability of hard alloy and the toughness of high-speed steel concurrently.
TiB2 has heat-resisting quantity good, and density and resistivity are small, and conductibility is good, and metal adhesiveness is low and friction factor
It is low, the features such as inoxidizability is strong, it is considered to be a kind of preferable steel-bonded carbide hard phase.Because of the solid solubility between Fe and TiB2
Low, wetability is good, and Mo can also improve its wetability, therefore the advantage of synthesis TiB2 and Fe, Mo, has made TiB.FeMo composite woods each
Material.
Japanese certain company develops and a kind of does not contain W, Co but the boride-based composite KMH of the M02FeB2 types containing Cr.
Such polynary boride-based alloy be prepared using water atomization Fe-Cr-B alloy powders, boride powder and Fe, Cr, Mo,
The metal dusts such as Ni make raw material, are manufactured through wet-milling mixing, compressing and vacuum-sintering method.
In addition to above-mentioned new steel bonded carbide, Japanese some companies also utilize a variety of hard compounds (such as
TiC, VC, Cr3C2, SiC, ZrC, AlN etc.) and its mixed compound make hard phase, make binding agent with various steel or ferrous alloy,
Develop some advanced composite material (ACM)s.
Meanwhile, people are also constantly seeking the combination of new hard phase and new Binder Phase, to develop with optimal
The MC type particulate reinforced composites of tissue and performance.In steel-bonded carbide, the hard particulate carbide species as wear-resistant phase
Compare many, there is the ceramic particles such as WC, TiC, Cr7C3, NbC, VC, SiC and alloy carbide and cementite.MC type carbide
Thermodynamic stability putting in order from high to low be：TiC ＞ NbC ＞ VC ＞ WC, putting in order for its hardness be：TiC ＞ VC
＞ WC ＞ NbC.It is known that TiC is poor with Fe intermiscibilities.Sintering temperature is high, and strength ratio WC is poor, and its advantage is light weight, thermally-stabilised
Property, frictional property are good；WC high temperature is bad with Fe intermiscibilities, is easily dissolved in Fe during high temperature, and high high-temp stability, calorific intensity are poor,
Separated out in cooling procedure so as to form bridge joint, deteriorate the mechanical performance of alloy；As carbide V element, with
Ti elements are similar to, and V is also a kind of very active alloying element, first with C, N etc. to have very strong affinity.The parent of V element and C
With power more than Cr elements and the affinity of C, two kinds of stable carbides of VC and V2C are easily formed.In carbide ceramics, VC's is hard
Degree highest, and have good heat endurance, it is a kind of preferable hard enhancing phase.
VC extremely stablizes, and is generally distributed in alloy substrate with tiny graininess, one side crystal grain thinning, improves matrix
The intensity and wearability of alloy；On the other hand, the creep rupture strength and the drag to creep of matrix are increased.The microhardness of VC
It is very high, more than 2800MPa is reached, it is a kind of wear-resistant phase of preferable alloy carbide.Take VC as the Novel steel knot hard for strengthening phase
Alloy, VC and Fe has extraordinary intermiscibility, and the two joint interface is good, and high high-temp stability, red hardness are good, is TiC, WC
Reinforcement is substituted well.Also between TiC and WC, vanadium can shape in Hi-Stren steel for the fusing point and thermal coefficient of expansion of VC
Precipitated into tiny vanadium carbide and effectively facilitate the crystal grain refinement of steel and strengthen；Vanadium carbide mutually can pinning dislocation and crystal boundary, obstruction position
Wrong and crystal boundary migration, improves the intensity of steel；The presence of vanadium carbide phase simultaneously can also improve the recrystallization temperature of material and high temperatures
Energy.Existing research shows：Vanadium carbide is added in steel can also improve wearability, corrosion resistance, toughness, ductility and the hardness of steel
And the comprehensive mechanical performance such as thermal fatigue resistance, and make steel that there is good solderability, and play elimination field trash and extend etc. and make
With.Therefore, vanadium carbide is used widely in steel.
Meanwhile, this novel hard alloy it is alternative traditional in industries such as automobile, metallurgy, mine, building materials and moulds
High-abrasive material, increases substantially parts service life, economizes on resources, with good economic results in society.Additionally, with work
The wilderness demand of industry production and inevitably artificial waste, China or even worldwide W, Co resource are quite poor
Weary, price rises steadily, and each national capital Efforts To Develop seeks the research and development of the substitute material of W, Co.And China V ore resources are abundant,
Replace W with V has feasibility very high in resource.Therefore, VC bases steel bonded carbide either engineer applied is researched and developed
Aspect, or be all significant in terms of Technological Economy.
The obdurability of the alloy manufactured by steel bonded carbide manufacturing process developed at present is still relatively low, far from satisfaction
More and more power of withstanding shocks are larger, the use in the case of impact velocity is higher.Therefore Development and Production high-performance, low cost
Steel bonded carbide is necessary.Wherein, the obdurability for improving steel-bonded carbide is the research direction of emphasis.
At present, the method mainly powder metallurgy lqiuid phase sintering method of steel bonded carbide is prepared.Lqiuid phase sintering method can be with root
The appropriate Binder Phase of selection and can be in the interior content for adjusting hard phase in a big way, but due to powder metallurgy is needed according to practical application
The hard phase of lqiuid phase sintering method is generally introduced in the way of adding, and the cost of raw material is high, particle is thick, hard phase titanium carbide and bonding
Bad, interface vulnerable to pollution of wetability of phase etc., therefore there is porosity by steel bonded carbide prepared by lqiuid phase sintering method
The shortcomings of height, low performance, high cost, for requiring that application scenario higher is often needed by forging or hip treatment, material
The cost performance of material is further reduced.
In recent years, the research that steel bonded carbide is prepared using in-situ synthesis has been carried out both at home and abroad.Situ synthesis techniques
Be it is a kind of designed by alloy, under certain condition in parent metal reaction in-situ to generate one or more thermodynamically stable
The advanced composite material (ACM) technology of preparing of hard phase.Compared with traditional material preparation method, the technology have preparation process is simple,
The enhancing of produced in situ is not mutually contaminated, is becoming for steel bonded carbide technology of preparing development the features such as interface bond strength is high
Gesture.
But in-situ synthesis also have many deficiencies:Enhancing particle is only limited to the thermodynamically stable grain in particular substrate；
Generation compared to more complicated, whard to control；Granular size, shape receive forming core, the dynamics Controlling of growth process, and in-situ particle
After formation, often meeting segregation asks gap or grain boundary in dendrite in casting process, and bad shadow is produced to material structure and performance
Ring, and manufacturability is poor, and preparation cost is higher than existing process, is unsuitable for large-scale production.Obviously, situ synthesis techniques are realized producing
The key of industry is must further to study rational homogenization process, optimum synthesis technique, reduction production cost.
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of tough modified high manganese steel base VC steel bonded carbide high
Preparation method, is used to improve the performance of VC steel bonded carbide.
A kind of preparation method of tough modified high manganese steel base VC steel bonded carbide high of the invention, it uses following technology
Scheme：
(1) raw material：
Raw materials be V205 powder, molybdenum-iron powder, ferrochrome powder, vanadium iron powder, ferromanganese powder, ferrosilicon powder, iron powder, nickel powder, aquadag,
CeO2、Y3O2、La2O3One of them or three kinds, PVA, powder size is at 10~50 μm；
(2) material is prepared：
1）Fabricated in situ VC mixed-powders are prepared：By V205 powder（Vanadium）With aquadag powder press C/ V205 atomic ratios for 0.4~
0.5 carries out being configured to fabricated in situ VC mixed-powders；
2）Bonding phase matrix alloy powder is prepared：Bonding phase metal material chemical composition mass percent is：C1.0~1.5%,
Cr1.8~2.5%, Mo0.6~2.0%, V0.5~2.0%, Si0.6~0.9%, Mn10~14%, Ni0.5~2.0%, S≤0.02,
P≤0.02, CeO2、Y3O2、La2O3Combination≤0.8% of one of them or more than two kinds, surplus Fe, and inevitable impurity
Element；
3）Tough modified high manganese steel base VC Steel-bonded Cemented Carbides high are prepared：Material chemical composition mass percent is：It is in situ
Synthesis VC mixed-powders 30~50%, bonding phase matrix alloy powder 70~50%；
(3) step of preparation process is：
1）Material is prepared：By V205 powder（Vanadium）With graphite powder in C/Ti atomic ratios the ratio for needed for 0.8~1.0 is configured to
In-situ synthesizing TiC mixed-powder；By molybdenum-iron powder, ferrochrome powder, vanadium iron powder, ferromanganese powder, ferrosilicon powder, according to required chemical composition matter
Amount percentage conversion, together with iron powder, nickel powder, aquadag, CeO2、Y3O2、La2O3The combination raw materials of one of them or more than two kinds
The proportions as needed for bonding phase metal material chemical composition mass percent, wherein manganese carbon ratio >=3；
2）The ratio of VC particles and matrix material according to needed for Steel-bonded Cemented Carbide is mixed two kinds of materials, is loaded
In ball milling bucket, load steel ball, ratio of grinding media to material 5:1~10:1, add absolute ethyl alcohol make medium and 0.5-1%PVA as cooling agent and
Dispersant, using vibrations ball mill ball milling 48~72 hours；
3）Sieved after slurry is dried, the product of required size shape is then pressed under 350~500 MPa pressure；
4）Sinter under vacuum, sintering temperature is 1400 DEG C~1500 DEG C, sintering process is:10 DEG C/min of firing rate,
The Isothermal sinter of 2~5 hours is carried out after arrival sintering temperature, furnace cooling to room temperature obtains the high tough modified of required composition
High-manganese steel-base VC steel bonded carbide.
Beneficial effect
Compared with prior art, the invention has the advantages that：
1st, the present invention is with cheap V205 powder, iron powder, ferrochrome powder, molybdenum-iron powder, ferrotungsten powder, vanadium iron powder, ferrosilicon powder, ferromanganese
Powder, aquadag is raw material, and in-situ reactive synthesis technology is combined with liquid phase sintering technology, is prepared for hard phase vanadium carbide body
Fraction is 30%~50% high tough VC high-speed steel-bases steel bonded carbide.It is mainly characterized by：1. because steel knot hard is closed
VC in gold is in intrinsic silicon fabricated in situ by the reaction in sintering process, it is possible to obtain Ordinary hardening phase powder
The method of mixing is difficult to reach, or even inaccessiable granular and uniformity coefficient, and basal body interface is combined preferably and interface is dry
Only.2. fabricated in situ enhancing particle size is tiny, and surface is evenly distributed in the base without wedge angle, so as to improve material
Bending strength and properties.3. situ synthesis techniques are combined together with liquid phase sintering technology, technique is easy, low cost.
4. it is cheap due to raw material, cost can be substantially reduced.Can not only be burnt in a vacuum in the technique of this powder simultaneously
Knot, it is also possible to how to sinter in the atmosphere such as hydrogen, widened the means approach manufactured.
The present invention improves the activity of powder using high-energy ball milling mode, and reaches titanium carbide with the machinery conjunction of steel matrix powder
The degree of aurification, so as to improve titanium carbide and compatibility of the steel matrix in sintering process, improves the obdurability of final alloy.This
Outward, the present invention in employ the relatively low ferro-molybdenum of price as raw material, its in sintering process further improve titanium carbide with
The wetability of steel matrix, improves the obdurability of alloy.Therefore, the present invention prepares high-performance steel-bonded carbide method and can improve alloy
Comprehensive mechanical property, and process is easy, cost-effective.
2nd, the present invention mutually manufactures new steel bonded carbide by enhancing of VC, and VC and Fe has extraordinary intermiscibility, two
Person's joint interface is good, and high high-temp stability, red hardness are good, in carbide ceramics, the hardness highest of VC, and have well
Heat endurance, is a kind of preferable hard enhancing phase, is that TiC, WC substitute reinforcement well.Vanadium carbide mutually can pinning dislocation with
Crystal boundary, hinders dislocation and crystal boundary migration, improves the intensity of steel；The presence of vanadium carbide phase simultaneously can also improve the recrystallization temperature of material
Degree and high-temperature behavior.Doing hard phase using vanadium carbide can also improve wearability, corrosion resistance, toughness, ductility and the hardness of steel
And the comprehensive mechanical performance such as thermal fatigue resistance, and make steel that there is good solderability, and play elimination field trash and extend etc. and make
With.Can be widely applied to the adverse circumstances of heavy duty, high speed, dry sliding friction or high temperature and high speed friction.
3rd, the present invention is by adding CeO2、Y3O2、La2O3Growing up for crystal grain is inhibited, and plays a part of dispersion-strengtherning.By
In CeO2、Y3O2、La2O3Chemical property is active, at a sintering temperature, CeO2、Y3O2、La2O3Can with metal dust interface on
Impurity and oxide-film are acted on, and play a part of to purify interface, contribute to the improvement of wetability, so as to be conducive to entering for densification
Journey, reaches the purpose for reducing porosity, and the reduction of porosity will contribute to the raising of bending strength.CeO2、Y3O2、
La2O3Powder content can play rare earth reinforced and act between 0. 2% and 0. 5%, therefore steel bonded carbide of the invention
Intensity and consistency are improved, and bending strength can reach more than 1700MPa, and consistency reaches 97. more than 4%.
3rd, the present invention improves the activity of powder using high-energy ball milling mode, and reaches vanadium carbide and steel matrix powder mechanical alloy
The degree of change, so as to improve vanadium carbide and compatibility of the steel matrix in sintering process, improves the obdurability of final alloy.This
Outward, the relatively low ferroalloy of price is employed as raw material, and after adding a certain amount of molybdenum in the present invention, it is sintered
Further improve the wetability of vanadium carbide and steel matrix in journey, the hard that steel bonded carbide situ is synthesized can be suppressed
Phase VC grows up, and reduces VC particle sizes, is evenly distributed.Wetting of the Binder Phase to hard phase VC is improved after due to adding molybdenum
Property, be conducive to liquid phase in sintering process to the filling of hole, porosity is low, is improved the density of steel bonded carbide,
Crystal grain is tiny, even tissue, so that its hardness and bending strength and obdurability are also improved.Therefore, prepared by the present invention
High-performance steel-bonded carbide method can improve the comprehensive mechanical property of alloy, and process is easy, the easy to operate, sintering period
It is short, process costs are low, be suitable to industrialized production.
Specific embodiment
Technical scheme is further illustrated with reference to specific embodiment：
Embodiment 1
A kind of preparation method of tough modified high manganese steel base VC steel bonded carbide high, it uses following technical scheme：
(1) raw material：
Raw materials be V205 powder, molybdenum-iron powder, ferrochrome powder, vanadium iron powder, ferromanganese powder, ferrosilicon powder, iron powder, nickel powder, aquadag,
CeO2, PVA, powder size is at 10~50 μm；
(2) material is prepared：
1）Fabricated in situ VC mixed-powders are prepared：By V205 powder（Vanadium）Carried out for 0.4 by C/ V205 atomic ratios with aquadag powder
It is configured to fabricated in situ VC mixed-powders；
2）Bonding phase matrix alloy powder is prepared：Bonding phase metal material chemical composition mass percent is：C1.0%, Cr2.0%,
Mo1.4%, V0.8%, Si0.6%, Mn11%, Ni1.2%, S≤0.02, P≤0.02, CeO2≤ 0.8%, surplus Fe, and can not keep away
The impurity element exempted from；
3）Tough modified high manganese steel base VC Steel-bonded Cemented Carbides high are prepared：Material chemical composition mass percent is：It is in situ
Synthesis VC mixed-powders 30%, bonding phase matrix alloy powder 70%；
(3) step of preparation process is：
1）Material is prepared：By V205 powder（Vanadium）Graphite powder be configured to fabricated in situ 30%TiC and mixed for 0.85 by C/Ti atomic ratios
Close powder；Molybdenum-iron powder, ferrochrome powder, vanadium iron powder, ferromanganese powder, ferrosilicon powder are converted according to required chemical composition mass percent,
Together with iron powder, nickel powder, aquadag, CeO2Raw material presses the proportions of bonding phase metal material chemical composition mass percent 70%；
2）Two kinds of materials of the fabricated in situ 30%VC particles needed for Steel-bonded Cemented Carbide and matrix material 70% are mixed
Close, be fitted into ball milling bucket, load steel ball, ratio of grinding media to material 5:1, add absolute ethyl alcohol to make medium and 0.6%PVA as cooling agent and divide
Powder, using vibrations ball mill ball milling 55 hours；
3）Sieved after slurry is dried, the product of required size shape is then pressed under 400 MPa pressure；
4）Sinter under vacuum, sintering temperature is 1400 DEG C, sintering process is:10 DEG C/min of firing rate, reaches sintering
The heat preservation sintering of 2.5 hours is carried out after temperature, furnace cooling to room temperature obtains the high tough modified high manganese steel base VC of required composition
Steel bonded carbide.
Embodiment 2
A kind of preparation method of tough modified high manganese steel base VC steel bonded carbide high, it uses following technical scheme：
(1) raw material：
Raw materials be V205 powder, molybdenum-iron powder, ferrochrome powder, vanadium iron powder, ferromanganese powder, ferrosilicon powder, iron powder, nickel powder, aquadag,
CeO2、Y3O2Two kinds, PVA, powder size is at 10~50 μm；
(2) material is prepared：
1）Fabricated in situ VC mixed-powders are prepared：By V205 powder（Vanadium）Enter for 0.45 by C/ V205 atomic ratios with aquadag powder
Row is configured to fabricated in situ VC mixed-powders；
2）Bonding phase matrix alloy powder is prepared：Bonding phase metal material chemical composition mass percent is：C1.3%,
Cr2.2%, Mo1.8%, V1.5%, Si0.7%, Mn12%, Ni1.6%, S≤0.02, P≤0.02, CeO2 0.5%, Y3O2
0.3%th, surplus Fe, and inevitably impurity element；
3）Tough modified high manganese steel base VC Steel-bonded Cemented Carbides high are prepared：Material chemical composition mass percent is：It is in situ
Synthesis 40%VC mixed-powders, bonding phase matrix alloy powder 60%；
(3) step of preparation process is：
1）Material is prepared：By V205 powder（Vanadium）Institute's fabricated in situ 40% is configured to for 0.9 by C/Ti atomic ratios with graphite powder
TiC mixed-powders；By ferrochrome powder, molybdenum-iron powder, ferrosilicon powder, ferromanganese powder, vanadium iron powder, according to required chemical composition mass percent
Conversion, together with iron powder, nickel powder, aquadag, CeO2、Y3O2Raw material presses bonding phase metal material chemical composition mass percent 60%
Proportions；
2）By the 40%VC particles of fabricated in situ needed for Steel-bonded Cemented Carbide and two kinds of materials of the ratio of matrix material 60%
Mixed, be fitted into ball milling bucket, loaded steel ball, ratio of grinding media to material 7:1, add absolute ethyl alcohol to make medium and 0.8%PVA as cooling
Agent and dispersant, using vibrations ball mill ball milling 62 hours；
3）Sieved after slurry is dried, the product of required size shape is then pressed under 450 MPa pressure；
4）Sinter under vacuum, sintering temperature is 1450 DEG C, sintering process is:10 DEG C/min of firing rate, reaches sintering
The heat preservation sintering of 3.5 hours is carried out after temperature, furnace cooling to room temperature obtains the high tough modified high manganese steel base VC of required composition
Steel bonded carbide.
Embodiment 3
A kind of preparation method of tough modified high manganese steel base VC steel bonded carbide high, it uses following technical scheme：
(1) raw material：
Raw materials be V205 powder, molybdenum-iron powder, ferrochrome powder, vanadium iron powder, ferromanganese powder, ferrosilicon powder, iron powder, nickel powder, aquadag,
CeO2、Y3O2、La2O3, PVA, powder size is at 10~50 μm；
(2) material is prepared：
1）Fabricated in situ VC mixed-powders are prepared：By V205 powder（Vanadium）Carried out for 0.5 by C/ V205 atomic ratios with aquadag powder
It is configured to fabricated in situ VC mixed-powders；
2）Bonding phase matrix alloy powder is prepared：Bonding phase metal material chemical composition mass percent is：C1.0~1.5%,
Cr1.8~2.5%, Mo0.6~2.0%, V0.5~2.0%, Si0.6~0.9%, Mn10~14%, Ni0.5~2.0%, S≤0.02,
P≤0.02, CeO2、Y3O2、La2O3Combination≤0.8% of one of them or more than two kinds, surplus Fe, and inevitable impurity
Element；
3）Tough modified high manganese steel base VC Steel-bonded Cemented Carbides high are prepared：Material chemical composition mass percent is：It is in situ
Synthesis VC mixed-powders 48%, bonding phase matrix alloy powder 52%；
(3) step of preparation process is：
1）By V205 powder（Vanadium）Institute's fabricated in situ 48%TiC mixed powders are configured to for 1.0 by C/Ti atomic ratios with graphite powder
End；Molybdenum-iron powder, ferrochrome powder, vanadium iron powder, ferromanganese powder, ferrosilicon powder are converted according to required chemical composition mass percent, together with
Iron powder, nickel powder, aquadag, CeO2、Y3O2, La2O3Raw material is in the ratio of bonding phase metal material chemical composition mass percent 52%
Prepare；
2）By the 50%VC particles of fabricated in situ needed for Steel-bonded Cemented Carbide and two kinds of materials of the ratio of matrix material 50%
Mixed, be fitted into ball milling bucket, loaded steel ball, ratio of grinding media to material 10:1, add absolute ethyl alcohol to make medium and 1%PVA as cooling agent
And dispersant, using vibrations ball mill ball milling 72 hours；
3）Sieved after slurry is dried, the product of required size shape is then pressed under 500 MPa pressure；
4）Sinter under vacuum, sintering temperature is 1480 DEG C, sintering process is:10 DEG C/min of firing rate, reaches sintering
The heat preservation sintering of 4.5 hours is carried out after temperature, furnace cooling to room temperature obtains the high tough modified high manganese steel base VC of required composition
Steel bonded carbide.
Claims (2)
1. a kind of preparation method of tough modified high manganese steel base VC steel bonded carbide high, it is characterised in that including as follows：
(1) material is prepared：
1）Fabricated in situ VC mixed-powders are prepared：By V205 powder（Vanadium）With aquadag powder press C/ V205 atomic ratios for 0.4~
0.5 carries out being configured to fabricated in situ VC mixed-powders；
2）Bonding phase matrix alloy powder is prepared：Bonding phase metal material chemical composition mass percent is：C1.0~1.5%,
Cr1.8~2.5%, Mo0.6~2.0%, V0.5~2.0%, Si0.6~0.9%, Mn10~14%, Ni0.5~2.0%, S≤0.02,
P≤0.02, CeO2、Y3O2、La2O3Combination≤0.8% of one of them or more than two kinds, surplus Fe, and inevitable impurity
Element；
3）Tough modified high manganese steel base VC Steel-bonded Cemented Carbides high are prepared：Material chemical composition mass percent is：It is in situ
Synthesis VC mixed-powders 30~50%, bonding phase matrix alloy powder 70~50%；
(2) step of preparation process is：
1）Material is prepared：By V205 powder（Vanadium）Institute is configured to for 0.4~0.5 by C/ V205 atomic ratios with aquadag powder
Need the fabricated in situ VC mixed-powders of ratio；By molybdenum-iron powder, ferrochrome powder, vanadium iron powder, ferromanganese powder, ferrosilicon powder, according to required change
Ingredient percent conversion is learned, together with iron powder, nickel powder, aquadag, CeO2、Y3O2、La2O3One of them or more than two kinds
Combination raw materials proportions, wherein manganese carbon ratio >=3 as needed for bonding phase metal material chemical composition mass percent；
2）The ratio of fabricated in situ VC mixed-powders and bonding phase matrix alloy powder according to needed for Steel-bonded Cemented Carbide
Two kinds of materials are mixed, is fitted into ball milling bucket, loaded steel ball, ratio of grinding media to material 5:1~10:1, add absolute ethyl alcohol make medium and
0.5~1%PVA as cooling agent and dispersant, using vibrations ball mill ball milling 48~72 hours；
3）Sieved after slurry is dried, the product of required size shape is then pressed under 350~500 MPa pressure；
4）Sinter under vacuum, sintering temperature is 1400 DEG C~1500 DEG C, sintering process is:10 DEG C/min of firing rate,
The Isothermal sinter of 2~5 hours is carried out after arrival sintering temperature, furnace cooling to room temperature obtains the high tough modified of required composition
High-manganese steel-base VC steel bonded carbide.
2. the preparation method of a kind of tough modified high manganese steel base VC steel bonded carbide high according to claim 1, it is special
Levy and be：Raw materials are V205 powder, ferrochrome powder, molybdenum-iron powder, vanadium iron powder, ferromanganese powder, ferrosilicon powder, iron powder, nickel powder, colloid stone
One of ink, CeO2, Y3O2, La2O3 or three kinds, PVA, powder size is at 10~50 μm.
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| CN114686745A (en) * | 2022-01-05 | 2022-07-01 | 中南大学 | A kind of powder metallurgy modified low alloy ultra-high strength steel and preparation method thereof |
| CN114686745B (en) * | 2022-01-05 | 2022-11-01 | 中南大学 | Powder metallurgy modified low-alloy ultrahigh-strength steel and preparation method thereof |
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Application publication date: 20170609 |