CN109396395A - A kind of iron-based composite grinding roll and preparation method thereof - Google Patents
A kind of iron-based composite grinding roll and preparation method thereof Download PDFInfo
- Publication number
- CN109396395A CN109396395A CN201811600225.5A CN201811600225A CN109396395A CN 109396395 A CN109396395 A CN 109396395A CN 201811600225 A CN201811600225 A CN 201811600225A CN 109396395 A CN109396395 A CN 109396395A
- Authority
- CN
- China
- Prior art keywords
- iron
- ceramic
- preparation
- based composite
- obtains
- 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.)
- Granted
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 173
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 83
- 238000000227 grinding Methods 0.000 title claims abstract description 74
- 239000002131 composite material Substances 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 238000005096 rolling process Methods 0.000 title description 3
- 239000000919 ceramic Substances 0.000 claims abstract description 94
- 230000002787 reinforcement Effects 0.000 claims abstract description 59
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 238000005266 casting Methods 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims description 30
- 238000000498 ball milling Methods 0.000 claims description 25
- 238000005245 sintering Methods 0.000 claims description 24
- 238000000462 isostatic pressing Methods 0.000 claims description 14
- 239000004576 sand Substances 0.000 claims description 13
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 9
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 claims description 9
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 claims description 8
- 239000003595 mist Substances 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 abstract description 16
- 230000007547 defect Effects 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 14
- 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 abstract description 8
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 abstract description 8
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 abstract description 8
- 229910003470 tongbaite Inorganic materials 0.000 abstract description 8
- 229910001928 zirconium oxide Inorganic materials 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 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 abstract description 6
- 208000037656 Respiratory Sounds Diseases 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000002244 precipitate Substances 0.000 abstract description 4
- 238000005215 recombination Methods 0.000 abstract description 4
- 230000006798 recombination Effects 0.000 abstract description 4
- 239000002893 slag Substances 0.000 abstract description 4
- 239000011651 chromium Substances 0.000 description 18
- 229910052804 chromium Inorganic materials 0.000 description 16
- 239000000047 product Substances 0.000 description 11
- 229910001018 Cast iron Inorganic materials 0.000 description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000002708 enhancing effect Effects 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000003763 carbonization Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 150000001875 compounds Chemical group 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000161 steel melt Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/02—Casting in, on, or around objects which form part of the product for making reinforced articles
-
- B22F1/0003—
-
- 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
- B22F3/02—Compacting only
- B22F3/04—Compacting only by applying fluid pressure, e.g. by cold isostatic pressing [CIP]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F2003/145—Both compacting and sintering simultaneously by warm compacting, below debindering temperature
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Fluid Mechanics (AREA)
- Powder Metallurgy (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention provides a kind of preparation methods of iron-based composite grinding roll, belong to technical field of composite materials, the type that the present invention passes through control raw material, amount ratio and preparation method, ceramic phase reinforcement obtained includes the iron of ceramic hard phase and non-rigid phase, ceramic hard mutually includes aluminium oxide, zirconium oxide, vanadium carbide, titanium carbide and chromium carbide, on the one hand high component (> 50%) is solved, barrier of the ceramic particle Dispersed precipitate of small particle (1000 μm of <) in steel material, on the other hand it solves the problems, such as to wash away containing ceramic phase reinforcement in high-temperature steel iron liquid easily defeated and dispersed, ceramic phase reinforcement is eliminated simultaneously is also easy to produce stomata in later period casting recombination process, slag inclusion, the defects of crackle, iron-based composite grinding roll defect obtained significantly reduces, improve wear-resisting property.Embodiment statistics indicate that, iron-based composite grinding roll wear-resisting property provided by the invention is excellent.
Description
Technical field
The present invention relates to technical field of composite materials more particularly to a kind of iron-based composite grinding roll and preparation method thereof.
Background technique
Metal material is most important engineering material, and in metal material, 90% is steel, and steel material has price just
Preferably, it resourceful, superior performance and easy the features such as accomplishing scale production, is widely used.How steel material is improved
Performance also become lot of domestic and foreign scholar research target, one of them important research direction is exactly iron base composite material
Development and application.The reinforcement particle of low-density, high rigidity and high intensity, which is added in steel substrate, prepares particle reinforced iron
Based composites improve its elasticity modulus, hardness, wearability and high-temperature behavior, answer extensively while reducing density of material
For industrial circles such as wear parts.
Hard ceramic micro mist, such as ZrO2、Al2O3, the densification micro mist such as WC, hardness is generally higher than steel material, is ideal
Steel-based composite material enhances particle.Studies have shown that the lesser composite material of particle size yield stress with higher, and
Under the working conditions such as fretting wear, usually the enhancing grain volume fraction of abrasion working face is also required to be greater than 50%, conventional system
Standby technique is difficult to realize.
Scattered plum of Zhao etc., which reports, can prepare 2~3mmZTA ceramic particle enhancing steel-based composite material (referring to " ZTA/
The preparation and polishing machine research of rich chromium cast iron based composites ", Zhao dissipates plum etc., foundry engieering, 2011,32 (12): 1673-
1676), but the ZTA ceramic particle for 50 μm of partial size <, since micro- intergranular pore is too small, storeroom wetability and steel
The limitation of the factors such as mobility, is difficult to prepare using casting infiltration.CN1297798A, which is disclosed, first prepares reinforcement green body, then passes through casting
Sintering technology makes to be pasted onto green compact sintering densification on mould wall simultaneously using casting process high-temperature molten steel or the heat of molten iron
High-temperature chemical reaction occurs, thus the composite surface material layer stable in cast(ing) surface generation surfacing, thickness.Utilize molten iron
Heat in cavity filling process, in-situ preparation VC, TiC etc. in reinforcement are completed at the same time the metallurgical interface knot of reinforcement and matrix
It closes.But this method reinforcement has three: 1) internal-response is violent, and heat, volume fluctuation are huge, reinforcement and base
There is shrinkage cavity, stress collection moderate defect in body interface, and since molten iron casting filling time is short, ferroalloy quick solidification, internal gas
Hole, stress etc. can not be discharged or discharge the short time, will lead to form a large amount of initial crack sources；2) it washes away in high-temperature steel iron liquid and easily bursts
It dissipates；3) in the case where filling time of casting is short, thermal capacity leads to the graphite being added reaction not exclusively, remains stone in cast-internal
Ink dot defect reduces material mechanical performance.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of iron-based composite grinding rolls and preparation method thereof.The present invention improves
The content of hard phase in reinforcement makes the ceramic particle Dispersed precipitate of small particle (< 1000 μm) in the barrier of steel material, simultaneously
The defects of reinforcement is also easy to produce stomata, slag inclusion, crackle in later period casting recombination process is eliminated, the resistance to of iron-based composite grinding roll is improved
Grind performance.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
A kind of preparation method of iron-based composite grinding roll, comprising the following steps:
(1) raw material is mixed, obtains admixed finepowder, the raw material includes following components in percentage by weight: 10~60%
Hard ceramic powder, 10~22% high-carbon chromium iron, 2~4.5% vanadium iron powder, 1~2.5% carbonized titanium powder, 1.5~
3.5% nickel powder and 25~70% reduced iron powder；
(2) ball milling after mixing the admixed finepowder that the step (1) obtains with dehydrated alcohol, obtains ball milling product；
(3) isostatic pressing is carried out after drying the ball milling product that the step (2) obtains, obtains ceramic phase reinforcement base
Body；
(4) the ceramic phase reinforcement green body hot pressed sintering for obtaining the step (3), obtains ceramic phase reinforcement；
(5) casting steel fusant, obtains iron after the ceramic phase reinforcement that the step (4) obtains being fixed in grinding roller sand mold
Base composite grinding roll idiosome；
(6) the iron-based composite grinding roll idiosome for obtaining the step (5) is heat-treated, and obtains iron-based composite grinding roll.
Preferably, in the step (1) average grain diameter of hard ceramic powder less than 1000 μm.
Preferably, hard ceramic powder includes Al in the step (1)2O3·ZrO2Complex-phase ceramic micropowder and/or ZrO2It is micro-
Powder.
Preferably, the pressure of isostatic pressing is 180~300MPa, the guarantor of the isostatic pressing in the step (3)
The pressure time is 0.5~1h.
Preferably, the temperature of hot pressed sintering is 1230~1550 DEG C in the step (4), and the pressure of the hot pressed sintering is
20~50MPa, the time of the hot pressed sintering are 0.5~2h.
Preferably, the time of ball milling is 12~36h in the step (2), and the revolving speed of the ball milling is 100~300rpm.
Preferably, temperature dry in the step (3) is 100~250 DEG C, and the time of the drying is 2~5h.
Preferably, the temperature cast in the step (4) is 1350~1500 DEG C.
Preferably, the temperature being heat-treated in the step (6) is 940~980 DEG C, and the time is 1~2h.
The present invention also provides iron-based composite grinding rolls made from preparation method described in above-mentioned technical proposal.
The present invention provides a kind of preparation methods of iron-based composite grinding roll, and raw material is mixed, and obtain admixed finepowder, the original
Material includes following components in percentage by weight: 10~60% hard ceramic powder, 10~22% high-carbon chromium iron, 2~4.5%
Vanadium iron powder, 1~2.5% carbonized titanium powder, 1.5~3.5% nickel powder and 25~70% reduced iron powder；By admixed finepowder
Ball milling after mixing with dehydrated alcohol obtains ball milling product；Isostatic pressing will be carried out after the drying of ball milling product, obtains ceramic enhancing
Body green body；By ceramic phase reinforcement green body hot pressed sintering, ceramic phase reinforcement is obtained；After ceramic phase reinforcement is fixed in grinding roller sand mold
Casting steel fusant, obtains iron-based composite grinding roll idiosome；Iron-based composite grinding roll idiosome is heat-treated, iron-based composite mill is obtained
Roller.The present invention is compared with casting-sinter process, by hot-pressing sintering technique, makes VC, Cr in ceramic phase reinforcement7C3Etc. reinforced phases conjunction
Occur in this process procedure at reaction, makes heat absorption, the heat release of material, contraction, expansion of volume etc. occur in advance, keep away in this way
Exempt from the short time in casting process physical chemistry transformation, cause composite material remaining pore defect, interface residual stress it is excessive,
The problems such as reaction is not exclusively, product property is undesirable；Compared with gravity or pressure casting infiltration, ceramic phase reinforcement hole obtained is equal
Even, steel melt can preferably penetrate into；Compared with stirring-centre spinning, ceramic particle agglomeration is avoided, and ceramics are micro-
Uniform particle sizes' distribution of grain, is conducive to industry application；The present invention is low in cost simultaneously, can mechanization degree it is high, adapt to advise greatly
Mould production, promotion prospect are very wide.Type, amount ratio and preparation method of the present invention by control raw material, pottery obtained
Porcelain reinforcement includes the iron of ceramic hard phase and non-rigid phase, and ceramic hard mutually includes aluminium oxide, zirconium oxide, vanadium carbide, carbonization
On the one hand titanium and chromium carbide solve the ceramic particle Dispersed precipitate of high component (> 50%), small particle (1000 μm of <) in steel
The barrier of iron material, on the other hand solves the problems, such as to wash away containing ceramic phase reinforcement in high-temperature steel iron liquid easy to be defeated and dispersed, while eliminating pottery
The defects of porcelain reinforcement is also easy to produce stomata, slag inclusion, crackle in later period casting recombination process, iron-based composite grinding roll defect obtained
It significantly reduces, improves wear-resisting property.Embodiment statistics indicate that, iron-based composite grinding roll provided by the invention than iron matrix be made
The wear-resisting property of grinding roller improve 2~2.5 times.
Specific embodiment
The present invention provides a kind of preparation methods of iron-based composite grinding roll, comprising the following steps:
(1) raw material is mixed, obtains admixed finepowder, the raw material includes following components in percentage by weight: 10~60%
Hard ceramic powder, 10~22% high-carbon chromium iron, 2~4.5% vanadium iron powder, 1~2.5% carbonized titanium powder, 1.5~
3.5% nickel powder and 25~70% reduced iron powder；
(2) ball milling after mixing the admixed finepowder that the step (1) obtains with dehydrated alcohol, obtains ball milling product；
(3) isostatic pressing is carried out after drying the ball milling product that the step (2) obtains, obtains ceramic phase reinforcement base
Body；
(4) the ceramic phase reinforcement green body hot pressed sintering for obtaining the step (3), obtains ceramic phase reinforcement；
(5) casting steel fusant, obtains iron after the ceramic phase reinforcement that the step (4) obtains being fixed in grinding roller sand mold
Base composite grinding roll idiosome；
(6) the iron-based composite grinding roll idiosome for obtaining the step (5) is heat-treated, and obtains iron-based composite grinding roll.
The present invention mixes raw material, obtains admixed finepowder, and the raw material includes following components in percentage by weight: 10~
60% hard ceramic powder, 10~22% high-carbon chromium iron, 2~4.5% vanadium iron powder, 1~2.5% carbonized titanium powder, 1.5
~3.5% nickel powder and 25~70% reduced iron powder.
In the present invention, the weight percent of hard ceramic powder is preferably 45% in the raw material.In the present invention, described
The average grain diameter of hard ceramic powder is preferably smaller than 1000 μm, more preferably less than 900 μm.
In the present invention, the hard ceramic powder preferably includes Al2O3·ZrO2Complex-phase ceramic micropowder and/or ZrO2Micro mist.
The present invention is to the Al2O3·ZrO2Complex-phase ceramic micropowder and ZrO2The source of micro mist does not have special restriction, using this field skill
Commercial goods known to art personnel.
In the present invention, the weight percent of the raw material medium high carbon ferrochrome powder is preferably 17.6%.In the present invention, institute
State the component that high-carbon chromium iron preferably comprises following mass fraction: C 6.0~10.0%, Cr62~72%, Fe 20~35%.
The present invention does not have special restriction to the source of the high-carbon chromium iron, is using commercial goods well known to those skilled in the art
It can.
In the present invention, the weight percent of vanadium iron powder is preferably 3.6% in the raw material.In the present invention, the vanadium
Iron powder preferably comprises the component of following mass fraction: V 35~65%, Fe 35~65%.The present invention carrys out the vanadium iron powder
Source does not have special restriction, using commercial goods well known to those skilled in the art.
In the present invention, the weight percent of carbonized titanium powder is preferably 1.8% in the raw material.The present invention is to the carbonization
The source of titanium valve does not have special restriction, using commercial goods well known to those skilled in the art.
In the present invention, the weight percent of nickel powder is preferably 2% in the raw material.Source of the present invention to the nickel powder
There is no special restriction, using commercial goods well known to those skilled in the art.
In the present invention, the weight percent of reduced iron powder is preferably 30% in the raw material.The present invention is to the reduction
The source of iron powder does not have special restriction, using commercial goods well known to those skilled in the art.
After obtaining admixed finepowder, ball milling after the present invention mixes the admixed finepowder with dehydrated alcohol obtains ball milling product.
In the present invention, the time of the ball milling is preferably 12~36h, and the revolving speed of the ball milling is preferably 100~300rpm.
In the present invention, the amount ratio of the admixed finepowder and dehydrated alcohol is preferably 100g:40~60mL.
After obtaining ball milling product, the present invention will carry out isostatic pressing after ball milling product drying, obtain ceramic enhancing
Body green body.In the present invention, the temperature of the drying is preferably 100~250 DEG C, and more preferably 150 DEG C, the time of the drying
Preferably 2~5h, more preferably 3h.In the present invention, the drying preferably carries out in a vacuum drying oven.
In the present invention, the pressure of the isostatic pressing is preferably 180~300MPa, more preferably 250MPa, described
The dwell time of isostatic pressing is preferably 0.5~1h.
After obtaining ceramic phase reinforcement green body, the ceramic phase reinforcement green body hot pressed sintering is obtained ceramic enhancing by the present invention
Body.
In the present invention, the temperature of the hot pressed sintering is preferably 1230~1550 DEG C, and more preferably 1250 DEG C, the heat
The pressure of pressure sintering is preferably 20~50MPa, and more preferably 30MPa, the time of the hot pressed sintering is preferably 0.5~2h, more
Preferably 1h.The present invention makes VC, Cr in ceramic phase reinforcement by hot-pressing sintering technique7C3Etc. reinforced phases synthetic reaction at this
Occur in process procedure, make heat absorption, the heat release of material, contraction, expansion of volume etc. occur in advance, thus be avoided that in casting process
The physical chemistry of middle short time changes, cause composite material remaining pore defect, interface residual stress is excessive, reaction is incomplete,
The problems such as product property is undesirable.
In the present invention, ceramic phase reinforcement includes the iron of ceramic hard phase and non-rigid phase.In the present invention, the ceramics are hard
Matter mutually preferably comprises aluminium oxide, zirconium oxide, vanadium carbide, titanium carbide and chromium carbide.In the present invention, the shape of the ceramic phase reinforcement
Shape preferably needs compound Region Matching, more preferably strip, bulk or cellular with component.In the present invention, the ceramics increase
The thickness of strong body is preferably 3~80mm.
After obtaining the ceramic phase reinforcement, casting steel after the ceramic phase reinforcement is fixed in grinding roller sand mold by the present invention
Melt obtains iron-based composite grinding roll idiosome.The present invention does not have special restriction to the grinding roller sand mold or preparation method, using this
Grinding roller sand mold made from preparation method known to the technical staff of field.
In the present invention, the temperature of the casting is preferably 1350~1500 DEG C, more preferably 1380~1450 DEG C, more excellent
It is selected as 1420 DEG C.
In the present invention, the steel fusant is preferred from rich chromium cast iron.The present invention to the rich chromium cast iron it is specific at
Divide not special restriction.
After obtaining iron-based composite grinding roll idiosome, the iron-based composite grinding roll idiosome is heat-treated by the present invention, obtains iron
Base composite grinding roll.
In the present invention, the temperature of the heat treatment is preferably 940~980 DEG C, and more preferably 950~960 DEG C, the time is excellent
It is selected as 1~2h, more preferably 1~1.5h.
It is described iron-based compound the present invention also provides iron-based composite grinding roll made from preparation method described in above-mentioned technical proposal
Grinding roller includes the iron of ceramic hard phase and non-rigid phase.This hair prepares iron-based composite grinding roll, ceramics enhancing by ceramic phase reinforcement
It include the iron of ceramic hard phase and non-rigid phase in body, ceramic hard mutually preferably comprises aluminium oxide, zirconium oxide, vanadium carbide, carbonization
Titanium and chromium carbide.For the present invention by type, amount ratio and the preparation method of control raw material, ceramic phase reinforcement obtained includes pottery
The iron of porcelain hard phase and non-rigid phase, ceramic hard mutually include aluminium oxide, zirconium oxide, vanadium carbide, titanium carbide and chromium carbide, a side
Face solve high component (> 50%), small particle (1000 μm of <) ceramic particle Dispersed precipitate steel material barrier, separately
On the one hand solves the problems, such as containing ceramic phase reinforcement high-temperature steel iron liquid wash away easily it is defeated and dispersed, while eliminate ceramic phase reinforcement the later period casting
It makes the defects of stomata, slag inclusion, crackle are also easy to produce in recombination process, iron-based composite grinding roll defect obtained significantly reduces, and improves
Wear-resisting property.
Iron-based composite grinding roll provided by the invention and preparation method thereof is described in detail below with reference to embodiment, but
It is that they cannot be interpreted as limiting the scope of the present invention.
The average grain diameter of hard ceramic powder is less than 1000 μm in all embodiments of the invention, high-carbon chromium iron preferably comprise with
The component of lower mass fraction: C 6.0%, Cr 64%, Fe 30%, vanadium iron powder include the component of following mass fraction: V 35%,
Fe 65%.
1 split blade type grinding roller of embodiment
1) raw material and proportion；
Each raw material proportioning of ceramic phase reinforcement is as shown in table 1.
Each raw material proportioning of 1 ceramic phase reinforcement of table
2) above-mentioned admixed finepowder is put into ball grinder, the ratio that the dehydrated alcohol of 40mL is added according to every 100g micro mist is mixed
It closes, drum's speed of rotation 300r/min, mixing time 12h；
3) admixed finepowder by above-mentioned after ball-milling treatment is put into vacuum oven dry, and temperature is 100 DEG C, when dry
Between 5h；
4) above-mentioned admixed finepowder is put into mold and carries out isostatic pressing, pressure 180MP, pressure maintaining 1h；
5) ceramic phase reinforcement green body obtained above is subjected to hot pressed sintering, sintering temperature is 1230 DEG C, and pressure is
50MPa, dwell time 2h keep the temperature 2h；
6) ceramic enhancement phase in ceramic phase reinforcement includes aluminium oxide, zirconium oxide, vanadium carbide, titanium carbide and chromium carbide, is increased
Strong body thickness 40mm；
7) grinding roller sand mold is made, ceramic phase reinforcement obtained above is cut into Φ 20 × 30mm size, is placed in sand mold,
Mould assembling；The melting rich chromium cast iron in medium-frequency induction furnace, rich chromium cast iron ingredient C:3.2%, Cr:25%, Si:0.5%, Mn:
0.5%, P:0.05%, S:0.0.5%, surplus Fe；Molten steel is poured into, cast temperature is 1380 DEG C, after cooling, is obtained iron-based multiple
Close grinding roller idiosome；
8) the iron-based composite grinding roll idiosome is subjected at 940 DEG C heat treatment 2h, obtains iron-based composite grinding roll.
There is original Al in the reinforcement of the iron-based composite grinding roll2O3·ZrO2Complex phase ceramic and newly-generated TiC, VC,
(Fe、Cr)7C3Etc. a variety of hard reinforced phases, and interface cohesion is good.
Iron-based composite grinding roll defect made from the present embodiment significantly reduces, to iron-based composite grinding roll made from the present embodiment into
Row wear-resisting property test, as a result, it has been found that iron-based composite grinding roll made from the present embodiment improves 2 times than grinding roller made from iron matrix.
2 tyre type grinding roller of embodiment
1) raw material and proportion；
Each raw material proportioning of ceramic phase reinforcement is as shown in table 2.
Each raw material proportioning of 2 ceramic phase reinforcement of table
2) above-mentioned admixed finepowder is put into ball grinder, mixes according to the ratio that the dehydrated alcohol of 60mL is added in every 100g micro mist,
Drum's speed of rotation 100r/min, mixing time 36h；
3) above-mentioned admixed finepowder is put into drying in vacuum oven, temperature is 250 DEG C, drying time 2h；
4) admixed finepowder by above-mentioned after ball-milling treatment is put into mold and carries out isostatic pressing, pressure 300MP, pressure maintaining
0.5h；
5) ceramic phase reinforcement green body obtained above is subjected to hot pressed sintering, sintering temperature is 1230 DEG C, and pressure is
20MPa, dwell time 0.5h keep the temperature 0.5h；
6) ceramic enhancement phase in ceramic phase reinforcement includes aluminium oxide, zirconium oxide, vanadium carbide, titanium carbide and chromium carbide etc.,
Enhance body thickness 60mm；
7) grinding roller sand mold is made, ceramic phase reinforcement obtained above is cut into Φ 20 × 30mm size, is placed in sand mold,
Mould assembling；The melting rich chromium cast iron in medium-frequency induction furnace, rich chromium cast iron ingredient C:3.5%, Cr:15%, Si:0.5%, Mn:
0.5%, P:0.05%, S:0.0.5%, surplus Fe；Molten steel is poured into, cast temperature is 1450 DEG C, after cooling, is obtained iron-based multiple
Close grinding roller idiosome；
8) the iron-based composite grinding roll idiosome is subjected at 980 DEG C heat treatment 1h, obtains iron-based composite grinding roll.
There is original ZrO in the reinforcement of the iron-based composite grinding roll2Complex phase ceramic and newly-generated TiC, VC, (Fe, Cr)7C3Etc. a variety of hard reinforced phases, and interface cohesion is good.
Iron-based composite grinding roll defect made from the present embodiment significantly reduces, to iron-based composite grinding roll made from the present embodiment into
Row wear-resisting property test, as a result, it has been found that iron-based composite grinding roll made from the present embodiment improves 2.5 than grinding roller made from iron matrix
Times.
3 taper grinding roller of embodiment
1) raw material and proportion；
Each raw material proportioning of ceramic phase reinforcement is as shown in table 3.
Each raw material proportioning of 3 ceramic phase reinforcement of table
2) above-mentioned admixed finepowder is put into ball grinder, the ratio that the dehydrated alcohol of 40mL is added according to every 100g micro mist is mixed
It closes, drum's speed of rotation 300r/min, mixing time 12h；
3) admixed finepowder by above-mentioned after ball-milling treatment is put into vacuum oven dry, and temperature is 150 DEG C, when dry
Between 5h；
4) above-mentioned admixed finepowder is put into mold and carries out isostatic pressing, pressure 250MP, pressure maintaining 1h；
5) ceramic phase reinforcement green body obtained above is subjected to hot pressed sintering, sintering temperature is 1250 DEG C, and pressure is
30MPa, dwell time 1h keep the temperature 1h；
6) ceramic enhancement phase in ceramic phase reinforcement includes aluminium oxide, zirconium oxide, vanadium carbide, titanium carbide and chromium carbide etc.,
Enhance body thickness 50mm；
7) grinding roller sand mold is made, ceramic phase reinforcement obtained above is cut into Φ 20 × 30mm size, is placed in sand mold,
Mould assembling；The melting rich chromium cast iron in medium-frequency induction furnace, rich chromium cast iron ingredient C:3.2%, Cr:20%, Si:0.5%, Mn:
0.5%, P:0.05%, S:0.0.5%, surplus Fe；Molten steel is poured into, cast temperature is 1420 DEG C, after cooling, is obtained iron-based multiple
Close grinding roller idiosome；
8) the iron-based composite grinding roll idiosome is subjected at 950 DEG C heat treatment 1.5h, obtains iron-based composite grinding roll.
There is original Al in the reinforcement of the iron-based composite grinding roll2O3·ZrO2Complex phase ceramic and newly-generated TiC, VC,
(Fe、Cr)7C3Etc. a variety of hard reinforced phases, and interface cohesion is good.
Iron-based composite grinding roll defect made from the present embodiment significantly reduces, to iron-based composite grinding roll made from the present embodiment into
Row wear-resisting property test, as a result, it has been found that iron-based composite grinding roll made from the present embodiment improves 2.4 than grinding roller made from iron matrix
Times.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of preparation method of iron-based composite grinding roll, which comprises the following steps:
(1) raw material is mixed, obtains admixed finepowder, the raw material includes following components in percentage by weight: 10~60% it is hard
Matter ceramic powder, 10~22% high-carbon chromium iron, 2~4.5% vanadium iron powder, 1~2.5% carbonized titanium powder, 1.5~3.5%
Nickel powder and 25~70% reduced iron powder；
(2) ball milling after mixing the admixed finepowder that the step (1) obtains with dehydrated alcohol, obtains ball milling product；
(3) isostatic pressing is carried out after drying the ball milling product that the step (2) obtains, obtains ceramic phase reinforcement green body；
(4) the ceramic phase reinforcement green body hot pressed sintering for obtaining the step (3), obtains ceramic phase reinforcement；
(5) casting steel fusant, obtains iron-based multiple after the ceramic phase reinforcement that the step (4) obtains being fixed in grinding roller sand mold
Close grinding roller idiosome；
(6) the iron-based composite grinding roll idiosome for obtaining the step (5) is heat-treated, and obtains iron-based composite grinding roll.
2. preparation method according to claim 1, which is characterized in that the average grain of hard ceramic powder in the step (1)
Diameter is less than 1000 μm.
3. preparation method according to claim 1 or 2, which is characterized in that hard ceramic powder includes in the step (1)
Al2O3·ZrO2Complex-phase ceramic micropowder and/or ZrO2Micro mist.
4. preparation method according to claim 1, which is characterized in that the pressure of isostatic pressing is in the step (3)
180~300MPa, the dwell time of the isostatic pressing are 0.5~1h.
5. preparation method according to claim 1, which is characterized in that the temperature of hot pressed sintering is in the step (4)
1230~1550 DEG C, the pressure of the hot pressed sintering is 20~50MPa, and the time of the hot pressed sintering is 0.5~2h.
6. preparation method according to claim 1, which is characterized in that in the step (2) time of ball milling be 12~
36h, the revolving speed of the ball milling are 100~300rpm.
7. preparation method according to claim 1, which is characterized in that in the step (3) dry temperature be 100~
250 DEG C, the time of the drying is 2~5h.
8. preparation method according to claim 1, which is characterized in that the temperature cast in the step (4) is 1350~
1500℃。
9. preparation method according to claim 1, which is characterized in that the temperature being heat-treated in the step (6) is 940~
980 DEG C, the time is 1~2h.
10. iron-based composite grinding roll made from preparation method described in claim 1~9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811600225.5A CN109396395B (en) | 2018-12-26 | 2018-12-26 | Iron-based composite grinding roller and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811600225.5A CN109396395B (en) | 2018-12-26 | 2018-12-26 | Iron-based composite grinding roller and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109396395A true CN109396395A (en) | 2019-03-01 |
| CN109396395B CN109396395B (en) | 2021-11-16 |
Family
ID=65461520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811600225.5A Active CN109396395B (en) | 2018-12-26 | 2018-12-26 | Iron-based composite grinding roller and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109396395B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333749A (en) * | 2021-05-21 | 2021-09-03 | 广东省科学院材料与加工研究所 | Preparation process of three-dimensional reticular preform and three-dimensional reticular preform |
| CN114087301A (en) * | 2021-11-11 | 2022-02-25 | 湖南金天铝业高科技股份有限公司 | Estimation method and estimation system for technological parameters in process of manufacturing brake disc through hot-press shaping |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899585A (en) * | 2010-07-23 | 2010-12-01 | 西安交通大学 | Prefabricated part of composite abrasion-resistant part and method for manufacturing abrasion-resistant part with same |
| CN102600928A (en) * | 2012-02-29 | 2012-07-25 | 中国地质大学（北京） | Inserted tooth hammer of crushing machine and preparation method thereof |
| CN103769563A (en) * | 2014-01-22 | 2014-05-07 | 西安交通大学 | Preparation method for active element sintered ZTA (Zirconia Toughened Alumina) particulate reinforced steel based compound grinding roller and grinding disk |
-
2018
- 2018-12-26 CN CN201811600225.5A patent/CN109396395B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899585A (en) * | 2010-07-23 | 2010-12-01 | 西安交通大学 | Prefabricated part of composite abrasion-resistant part and method for manufacturing abrasion-resistant part with same |
| CN102600928A (en) * | 2012-02-29 | 2012-07-25 | 中国地质大学（北京） | Inserted tooth hammer of crushing machine and preparation method thereof |
| CN103769563A (en) * | 2014-01-22 | 2014-05-07 | 西安交通大学 | Preparation method for active element sintered ZTA (Zirconia Toughened Alumina) particulate reinforced steel based compound grinding roller and grinding disk |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333749A (en) * | 2021-05-21 | 2021-09-03 | 广东省科学院材料与加工研究所 | Preparation process of three-dimensional reticular preform and three-dimensional reticular preform |
| CN114087301A (en) * | 2021-11-11 | 2022-02-25 | 湖南金天铝业高科技股份有限公司 | Estimation method and estimation system for technological parameters in process of manufacturing brake disc through hot-press shaping |
| CN114087301B (en) * | 2021-11-11 | 2023-09-05 | 湖南湘投轻材科技股份有限公司 | Estimation method and estimation system for technological parameters in process of preparing brake disc through hot press shaping |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109396395B (en) | 2021-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103143708B (en) | Preparation method of hard alloy preform and method for preparing composite wear-resistant part by using hard alloy preform | |
| CN103785841B (en) | A kind of slurry is coated with the preparation method that ZTA strengthens steel-based composite wear-resistant part | |
| CN103769563B (en) | A kind of preparation method of active element sintering ZTA particle enhanced steel iron-based composite grinding roll and mill | |
| CN104876598B (en) | Thin strap continuous casting Max phase boron nitride composite ceramics side seal boards and its manufacture method | |
| CN104399930B (en) | A kind of method of centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill | |
| CN102225469B (en) | Ceramic grid-enhanced metal wear-resistant composite and preparation method thereof | |
| CN108098603A (en) | A kind of polishing train special grinding wheel containing super hard abrasive cermet bonding agent and preparation method thereof | |
| CN102600939B (en) | Method for manufacturing nanometer zirconia ceramic reinforced wear-resisting steel ball | |
| CN109439950A (en) | A kind of base steel composite hammer head and preparation method thereof | |
| CN103951436B (en) | Twin-roll thin strip continuous casting pottery side seal board and preparation method thereof | |
| CN109663900A (en) | A kind of steel-based composite plate hammer and preparation method thereof | |
| CN106216687B (en) | A kind of gradient tungsten carbide-base micro-nano complex cutter material and preparation method thereof | |
| CN106424740A (en) | Tungsten carbide particle reinforced steel matrix surface-layer composite material and preparation method thereof | |
| CN111088444A (en) | Preparation method of wear-resistant composite material and preparation method of wear-resistant composite material casting | |
| CN107460391A (en) | A kind of gradient hard alloy cutter material and its fast preparation method for adding graphene | |
| CN105861901A (en) | Metal-based ceramic cutting tool and preparation method | |
| CN109396395A (en) | A kind of iron-based composite grinding roll and preparation method thereof | |
| CN108286010A (en) | TiC enhancing rich chromium cast iron wear-resistant materials and preparation method thereof are formed in situ in one kind | |
| CN103964859B (en) | Thin steel strip continuous casting side sealing plate and preparation method thereof | |
| CN109402443A (en) | A kind of steel-based composite wear-resistant part and preparation method thereof | |
| CN102676956B (en) | Method for preparing iron-based surface composite material by virtue of in-situ synthesis | |
| CN109396419A (en) | A kind of ceramic phase reinforcement and preparation method thereof | |
| CN109550937A (en) | A kind of steel-based composite liner and preparation method thereof | |
| CN106041759B (en) | Superhard material products additive raw material composition, additive and preparation method thereof, combined binder and superhard material products | |
| AU2016415075B9 (en) | ZrO2-Al2O3 Multiphase Ceramic Particle for Wear-Resistance Application, Preparation Method Therefor and Use Thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 510000 363 Changxin Road, Tianhe District, Guangzhou, Guangdong. Applicant after: Institute of materials and processing, Guangdong Academy of Sciences Address before: 510000 363 Changxin Road, Tianhe District, Guangzhou, Guangdong. Applicant before: Guangdong Institute Of Materials And Processing |
|
| CB02 | Change of applicant information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211021 Address after: 510000 363 Changxin Road, Tianhe District, Guangzhou, Guangdong. Applicant after: Institute of new materials, Guangdong Academy of Sciences Address before: 510000 363 Changxin Road, Tianhe District, Guangzhou, Guangdong. Applicant before: Institute of materials and processing, Guangdong Academy of Sciences |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |