CN110205578A - A kind of plasma spray coating gradient hard conating self-lubricating knife tool and preparation method thereof - Google Patents
A kind of plasma spray coating gradient hard conating self-lubricating knife tool and preparation method thereof Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 238000005507 spraying Methods 0.000 title claims abstract description 12
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 45
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 40
- 239000000956 alloy Substances 0.000 claims abstract description 40
- 239000000919 ceramic Substances 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 39
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 29
- 229910052582 BN Inorganic materials 0.000 claims abstract description 28
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 25
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 21
- 238000007750 plasma spraying Methods 0.000 claims abstract description 18
- 239000011159 matrix material Substances 0.000 claims abstract description 16
- 229910000997 High-speed steel Inorganic materials 0.000 claims abstract description 8
- 239000011812 mixed powder Substances 0.000 claims description 56
- 239000000843 powder Substances 0.000 claims description 52
- 238000005253 cladding Methods 0.000 claims description 44
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 claims description 23
- 229910033181 TiB2 Inorganic materials 0.000 claims description 23
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 16
- 238000005516 engineering process Methods 0.000 claims description 15
- 230000001360 synchronised effect Effects 0.000 claims description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000005238 degreasing Methods 0.000 claims description 4
- 238000002203 pretreatment Methods 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 4
- 238000011065 in-situ storage Methods 0.000 abstract description 3
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 abstract description 2
- 239000000314 lubricant Substances 0.000 abstract description 2
- 239000002071 nanotube Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 229910003978 SiClx Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- -1 graphite Alkene Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052961 molybdenite Inorganic materials 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
-
- 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
-
- 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
- C22C29/16—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on nitrides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses a kind of plasma spray coating gradient hard conating self-lubricating knife tools and preparation method thereof.The tool matrix material is high-speed steel, and the gradient coating that matrix surface is successively made of hard alloy layer, silicon nitride ceramics layer, cbn layer, which has effects that self-lubricating.The gradient coating using plasma spraying method preparation.The cutter combines the advantages of high-speed steel, hard alloy, silicon nitride ceramics, cubic boron nitride and gradient coating, and the addition of carbon nanotube (CNTs) and boron nitride nano-tube (BNNTs) improves coating hardness, wearability and toughness；Cutter is whole not only to have good toughness, but also has very high hardness and wear-resisting property.In cutting process, when temperature is lower, graphene can play lubricant effect, PbO, Mo and TiB when high temperature2Reaction in-situ can occur, generate the PbMoO with lubricating effect4、TiO2And B2O3, so as to reduce cutter fretting wear in cutting process, improve cutter life.The cutter can be widely applied to the machining of dry cutting and difficult-to-machine material.
Description
Technical field
The invention belongs to technical field of mechanical cutting tool manufacture, in particular to a kind of plasma spray coating gradient applies firmly
Layer self-lubricating knife tool and preparation method thereof.
Background technique
Dry cutting is as a kind of emerging economic and environment-friendly manufacturing technology, it has also become a research hotspot of green processing.So
And when dry cutting, the friction between rake face upper slitter-bits is extremely violent, produces a large amount of heat, and the abrasion for resulting in cutter adds
Play, service life reduction.Therefore, there is an urgent need to research and develop new-type cutter.Self-lubricating knife tool refer to cutter material itself have lubrication,
Antifriction function can realize self-lubricating machining, to reduce tool surface friction and wear under conditions of unlubricated liquid.
Cutting-Tool Coating Technology is a kind of good process for modifying surface, coated cutting tool have high rigidity, good heat resistance,
The advantages that inoxidizability and corrosion resistance, carrying out coating treatment to tool surface is to improve one of the important method of cutter life.
To further increase cutting performance, coated cutting tool is from single layer to diversification and Composite Development；Meanwhile single coating is using
Being greatly limited property in the process, by preparing gradient composite coating, can take into account single coating excellent performance and
Its limitation, to significantly improve coated cutting tool performance.
Chinese invention patent " application number: 2011102143939.2 " reports a kind of gradient multiple coating tool and its system
The characteristics of Preparation Method, which combines ZrN, ZrTiN and gradient laminated construction, has high hardness and wearability
Energy.Chinese invention patent " application number: 201810077086.6 " report a kind of silicon nitride-hard alloy gradient coating cutter and
It is the advantages of preparation method, which takes into account silicon-nitride-based ceramic and hard alloy, both with higher hard
Degree, and there is good toughness.Chinese invention patent " it is soft or hard 201310465488.0 " application number: to report a kind of laser melting coating
The preparation method of composite coating self-lubricating knife tool, it is hard in tool matrix rake face cladding silicon nitride ceramics or hard alloy etc. first
Coating, then cladding MoS2Or WS2Soft coating, the cutter have effects that good toughness, hardness height and self-lubricating.
Summary of the invention
Goal of the invention: the invention discloses a kind of plasma spray coating gradient hard conating self-lubricating knife tool and its preparation sides
The advantages of method, which takes into account high-speed steel, hard alloy, silicon-nitride-based ceramic and cubic boron nitride, both have good toughness,
High hardness, and have effects that self-lubricating.The addition of carbon nanotube (CNTs) and boron nitride nano-tube (BNNTs) improves cutter
There is good toughness while hardness and wearability；In cutting process, when temperature is lower, graphene can play lubrication effect
Fruit, PbO, Mo and TiB when high temperature2Reaction in-situ can occur, generate the PbMoO with lubricating effect4、TiO2And B2O3, so as to
Enough reduce cutter fretting wear in cutting process, improves cutter life.
Technical solution: a kind of plasma spray coating gradient hard conating self-lubricating knife tool of the invention is real in the following manner
It is existing:
Tool matrix material is high-speed steel, and matrix surface has hard alloy layer, silicon nitride ceramics layer and cubic boron nitride
The gradient self-lubricating hard conating of layer composition, the hard conating using plasma spraying method is in tool matrix rake face and rear knife
Successively cladding hard alloy mixed powder, silicon nitride ceramics mixed powder and cubic boron nitride mixed powder are made in face.Hard alloy mixing
Each composition by weight percent in powder are as follows: 55-65%WC, 5-8%TiC, 5-8%Co, 1-2%TaN, 15-25%Ni60A, 2-4%
PbO, 2-4%Mo, 2-4%TiB2, 0.5-1.5%BNNTs, 0.5-1.5%CNTs, 0.5-1.5% graphene, the weight of each material
Measuring the sum of percentage is 100%；Each composition by weight percent in silicon nitride ceramics mixed powder are as follows: 40-60%Si3N4, 10-20%
ZrO2, 15-25%Ni60A, 2-5%PbO, 2-5%Mo, 2-5%TiB2, 0.5-2%BNNTs, 0.5-2%CNTs, 0.5-2%
Graphene, the sum of weight percent of each material are 100%；Each composition by weight percent in cubic boron nitride mixed powder are as follows: 50-
60%CBN, 20-30%Ni60A, 2-5%PbO, 2-5%Mo, 2-5%TiB2, 0.5-2%BNNTs, 0.5-2%CNTs, 0.5-
2% graphene, the sum of weight percent of each material are 100%.
Specific preparation process is as follows for a kind of plasma spray coating gradient hard conating self-lubricating knife tool of the invention:
(1) pre-treatment: cutter being successively placed in alcohol and acetone soln and is cleaned by ultrasonic each 20-30min, carries out degreasing
Processing.
(2) cladding hard alloy layer: configuration hard alloy mixed powder, main component (weight percent): 55-65%
WC, 5-8%TiC, 5-8%Co, 1-2%TaN, 15-25%Ni60A, 2-4%PbO, 2-4%Mo, 2-4%TiB2、0.5-
1.5%BNNTs, 0.5-1.5%CNTs, 0.5-1.5% graphene, the sum of weight percent of each material are 100%；It will prepare
Good hard alloy mixed powder is fitted into powder feeder, and adjustment powder feeder powder feeding rate is 10-80g/cm3；Using plasma
Spraying technology by the cladding of hard alloy mixed powder in cutter rake face and flank, cladding process using synchronous powder feeding system mode into
Row；Plasma process parameter is as follows: power 20-80kW, Ar throughput 20-80L/min, H2Throughput 10-60L/min, sweeps
Retouch speed 2-50mm/s.
(3) cladding silicon nitride ceramics layer: configuration silicon nitride ceramics mixed powder, main component (weight percent): 40-
60%Si3N4, 10-20%ZrO2, 15-25%Ni60A, 2-5%PbO, 2-5%Mo, 2-5%TiB2, 0.5-2%BNNTs,
0.5-2%CNTs, 0.5-2% graphene, the sum of weight percent of each material are 100%；By prepared silicon nitride ceramics
Mixed powder is fitted into powder feeder, and adjustment powder feeder powder feeding rate is 10-80g/cm3；Using plasma spraying technology is by nitrogen
SiClx ceramics mixed powder cladding is carried out in hard alloy layer surface, cladding process using synchronous powder feeding system mode；Plasma adds
Work parameter is as follows: power 20-80kW, Ar throughput 20-80L/min, H2Throughput 10-60L/min, scanning speed 2-50mm/
s。
(4) cladding cbn layer: configuration cubic boron nitride mixed powder, main component (weight percent): 50-
60%CBN, 20-30%Ni60A, 2-5%PbO, 2-5%Mo, 2-5%TiB2, 0.5-2%BNNTs, 0.5-2%CNTs, 0.5-
2% graphene, the sum of weight percent of each material are 100%；Prepared cubic boron nitride mixed powder is packed into powder feeding
In device, adjustment powder feeder powder feeding rate is 10-80g/cm3；Using plasma spraying technology is by cubic boron nitride mixed powder
Cladding is carried out in silicon nitride ceramics layer surface, cladding process using synchronous powder feeding system mode；Plasma process parameter is as follows: power
20-80kW, Ar throughput 20-80L/min, H2Throughput 10-60L/min, scanning speed 2-50mm/s.
(5) it post-processes: tool surface being modified after the completion of cladding, obtains the gradient hard conating self-lubricating knife tool,
So that total coating thickness is 100-3000 μm.
Compared with prior art, the beneficial effects of the present invention are:
1, the cutter takes into account the advantages of high-speed steel, hard alloy, silicon-nitride-based ceramic, cubic boron nitride and gradient-structure,
The addition of BNNTs and CNTs improves cutter hardness, wearability and toughness；2, in cutting process, when temperature is lower, graphene energy
Enough play lubricant effect, PbO, Mo and TiB when high temperature2Reaction in-situ can occur, generate the PbMoO with lubricating effect4、TiO2
And B2O3, enable the cutter that there is good self-lubricating function under higher cutting temperature, cut so as to reduce
Cutter fretting wear in journey improves cutter life；3, coating using plasma spraying method preparation of the present invention, this method preparation
It is high-efficient, there is stronger bond strength between coating and matrix；Meanwhile coating can achieve very big thickness；4, the cutter can
It is widely used in the machining of dry cutting and difficult-to-machine material, has broad application prospects.
Detailed description of the invention
Fig. 1 is the gradient hard conating self-lubricating knife tool structural schematic diagram of the invention, in which: 1 is tool matrix material, and 2 are
Hard alloy layer, 3 be silicon nitride ceramics layer, and 4 be cbn layer.
Specific embodiment
Embodiment 1:
Tool matrix material is W9Mo3Cr4V high-speed steel, and matrix surface has hard alloy layer, silicon nitride ceramics layer and stands
The gradient self-lubricating hard conating of square boron nitride layer composition, hard conating using plasma spraying method knife before tool matrix
Successively cladding hard alloy mixed powder, silicon nitride ceramics mixed powder and cubic boron nitride mixed powder are made for face and flank.Hard
Each composition by weight percent in alloy mixed powder are as follows: 55%WC, 8%TiC, 8%Co, 1%TaN, 20%Ni60A, 2%PbO,
2%Mo, 2%TiB2, 0.5%BNNTs, 0.5%CNTs, 1% graphene, the sum of weight percent of each material be 100%；Nitrogen
Each composition by weight percent in SiClx ceramics mixed powder are as follows: 45%Si3N4, 20%ZrO2, 20%Ni60A, 4%PbO, 4%Mo,
2%TiB2, 2%BNNTs, 2%CNTs, 1% graphene, the sum of weight percent of each material be 100%；Cubic boron nitride is mixed
Close each composition by weight percent in powder are as follows: 55%CBN, 30%Ni60A, 4%PbO, 4%Mo, 2%TiB2, 2%BNNTs, 2%
CNTs, 1% graphene, the sum of weight percent of each material are 100%.
Specific preparation process is as follows for a kind of plasma spray coating gradient hard conating self-lubricating knife tool of the invention:
(1) pre-treatment: cutter being successively placed in alcohol and acetone soln and is cleaned by ultrasonic each 20min, is carried out at degreasing
Reason.
(2) cladding hard alloy layer: configuration hard alloy mixed powder, main component (weight percent): 55%WC,
8%TiC, 8%Co, 1%TaN, 20%Ni60A, 2%PbO, 2%Mo, 2%TiB2, 0.5%BNNTs, 0.5%CNTs, 1% stone
Black alkene, the sum of weight percent of each material are 100%；Prepared hard alloy mixed powder is fitted into powder feeder, is adjusted
Whole powder feeder powder feeding rate is 60g/cm3；Using plasma spraying technology is by hard alloy mixed powder cladding before cutter
Knife face and flank, cladding process are carried out using synchronous powder feeding system mode；Plasma process parameter is as follows: power 20kW, Ar gas
Flow 20L/min, H2Throughput 20L/min, scanning speed 2mm/s.
(3) cladding silicon nitride ceramics layer: configuration silicon nitride ceramics mixed powder, main component (weight percent):
45%Si3N4, 20%ZrO2, 20%Ni60A, 4%PbO, 4%Mo, 2%TiB2, 2%BNNTs, 2%CNTs, 1% graphene,
The sum of weight percent of each material is 100%；Prepared silicon nitride ceramics mixed powder is fitted into powder feeder, adjustment is sent
Powder device powder feeding rate is 60g/cm3；Using plasma spraying technology is by silicon nitride ceramics mixed powder cladding in hard alloy
Layer surface, cladding process are carried out using synchronous powder feeding system mode；Plasma process parameter is as follows: power 20kW, Ar throughput
20L/min, H2Throughput 20L/min, scanning speed 2mm/s.
(4) cladding cbn layer: configuration cubic boron nitride mixed powder, main component (weight percent):
55%CBN, 30%Ni60A, 4%PbO, 4%Mo, 2%TiB2, 2%BNNTs, 2%CNTs, 1% graphene, the weight of each material
Measuring the sum of percentage is 100%；Prepared cubic boron nitride mixed powder is fitted into powder feeder, adjustment powder feeder powder feeding speed
Rate is 60g/cm3；Using plasma spraying technology on silicon-nitride-based ceramic surface, melts the cladding of cubic boron nitride mixed powder
Process is covered to carry out using synchronous powder feeding system mode；Plasma process parameter is as follows: power 20kW, Ar throughput 20L/min, H2Gas
Flow 20L/min scans speed 2mm/s.
(5) it post-processes: tool surface being modified after the completion of cladding, obtains the gradient hard conating cutter, so that applying
Layer overall thickness is 2500 μm.
Embodiment 2:
Tool matrix material is W9Mo3Cr4V high-speed steel, and matrix surface has hard alloy layer, silicon nitride ceramics layer and stands
The gradient self-lubricating hard conating of square boron nitride layer composition, hard conating using plasma spraying method knife before tool matrix
Successively cladding hard alloy mixed powder, silicon nitride ceramics mixed powder and cubic boron nitride mixed powder are made for face and flank.Hard
Each composition by weight percent in alloy mixed powder are as follows: 60%WC, 5%TiC, 5%Co, 2%TaN, 16%Ni60A, 3%PbO,
3%Mo, 3%TiB2, 1%BNNTs, 1%CNTs, 1% graphene, the sum of weight percent of each material be 100%；Silicon nitride
Each composition by weight percent in ceramic mixed powder are as follows: 55%Si3N4, 15%ZrO2, 16%Ni60A, 3%PbO, 3%Mo, 3%
TiB2, 2%BNNTs, 2%CNTs, 1% graphene, the sum of weight percent of each material be 100%；Cubic boron nitride mixing
Each composition by weight percent in powder are as follows: 60%CBN, 25%Ni60A, 3%PbO, 3%Mo, 3%TiB2, 2%BNNTs, 2%
CNTs, 2% graphene, the sum of weight percent of each material are 100%.
Specific preparation process is as follows for a kind of plasma spray coating gradient hard conating self-lubricating knife tool of the invention:
(1) pre-treatment: cutter being successively placed in alcohol and acetone soln and is cleaned by ultrasonic each 30min, is carried out at degreasing
Reason.
(2) cladding hard alloy layer: configuration hard alloy mixed powder, main component (weight percent): 60%WC,
5%TiC, 5%Co, 2%TaN, 16%Ni60A, 3%PbO, 3%Mo, 3%TiB2, 1%BNNTs, 1%CNTs, 1% graphite
Alkene, the sum of weight percent of each material are 100%；Prepared hard alloy mixed powder is fitted into powder feeder, is adjusted
Powder feeder powder feeding rate is 20g/cm3；Using plasma spraying technology is by hard alloy mixed powder cladding knife before cutter
Face and flank, cladding process are carried out using synchronous powder feeding system mode；Plasma process parameter is as follows: power 60kW, Ar air-flow
Measure 60L/min, H2Throughput 60L/min, scanning speed 50mm/s.
(3) cladding silicon nitride ceramics layer: configuration silicon nitride ceramics mixed powder, main component (weight percent):
55%Si3N4, 15%ZrO2, 16%Ni60A, 3%PbO, 3%Mo, 3%TiB2, 2%BNNTs, 2%CNTs, 1% graphene,
The sum of weight percent of each material is 100%；Prepared silicon nitride ceramics mixed powder is fitted into powder feeder, adjustment is sent
Powder device powder feeding rate is 20g/cm3；Using plasma spraying technology is by silicon nitride ceramics mixed powder cladding in hard alloy
Layer surface, cladding process are carried out using synchronous powder feeding system mode；Plasma process parameter is as follows: power 60kW, Ar throughput
60L/min, H2Throughput 60L/min, scanning speed 50mm/s.
(4) cladding cbn layer: configuration cubic boron nitride mixed powder, main component (weight percent):
60%CBN, 25%Ni60A, 3%PbO, 3%Mo, 3%TiB2, 2%BNNTs, 2%CNTs, 2% graphene, the weight of each material
Measuring the sum of percentage is 100%；Prepared cubic boron nitride mixed powder is fitted into powder feeder, adjustment powder feeder powder feeding speed
Rate is 20g/cm3；Using plasma spraying technology is by the cladding of cubic boron nitride mixed powder in silicon nitride ceramics surface, cladding
Process is carried out using synchronous powder feeding system mode；Plasma process parameter is as follows: power 60kW, Ar throughput 60L/min, H2Air-flow
Measure 60L/min, scanning speed 50mm/s.
(5) it post-processes: tool surface being modified after the completion of cladding, obtains the gradient hard conating cutter, so that applying
Layer overall thickness is 300 μm.
Claims (3)
1. a kind of plasma spray coating gradient hard conating self-lubricating knife tool, it is characterised in that: tool matrix material is high-speed steel, base
Body surface face has the gradient self-lubricating hard conating of hard alloy layer, silicon nitride ceramics layer and cbn layer composition, described hard
Coating is prepared using plasma spraying method.
2. a kind of preparation method of plasma spray coating gradient hard conating self-lubricating knife tool, it is characterised in that: preparation method is adopted
With plasma spray technology, in tool matrix rake face and flank, successively cladding hard alloy mixed powder, silicon nitride ceramics are mixed
It closes powder and cubic boron nitride mixed powder prepares gradient self-lubricating hard conating.Each composition by weight percent in hard alloy mixed powder
Are as follows: 55-65%WC, 5-8%TiC, 5-8%Co, 1-2%TaN, 15-25%Ni60A, 2-4%PbO, 2-4%Mo, 2-4%
TiB2, 0.5-1.5%BNNTs, 0.5-1.5%CNTs, 0.5-1.5% graphene, the sum of the weight percent of each material is
100%；Each composition by weight percent in silicon nitride ceramics mixed powder are as follows: 40-60%Si3N4, 10-20%ZrO2, 15-25%
Ni60A, 2-5%PbO, 2-5%Mo, 2-5%TiB2, 0.5-2%BNNTs, 0.5-2%CNTs, 0.5-2% graphene, each material
The sum of weight percent of material is 100%；Each composition by weight percent in cubic boron nitride mixed powder are as follows: 50-60%CBN, 20-
30%Ni60A, 2-5%PbO, 2-5%Mo, 2-5%TiB2, 0.5-2%BNNTs, 0.5-2%CNTs, 0.5-2% graphene,
The sum of weight percent of each material is 100%.
3. the preparation method of plasma spray coating gradient hard conating self-lubricating knife tool according to claim 2, feature exist
In specific preparation step are as follows:
(1) pre-treatment: cutter being successively placed in alcohol and acetone soln and is cleaned by ultrasonic each 20-30min, is carried out at degreasing
Reason；
(2) cladding hard alloy layer: configuration hard alloy mixed powder, main component (weight percent): 55-65%WC,
5-8%TiC, 5-8%Co, 1-2%TaN, 15-25%Ni60A, 2-4%PbO, 2-4%Mo, 2-4%TiB2, 0.5-1.5%
BNNTs, 0.5-1.5%CNTs, 0.5-1.5% graphene, the sum of weight percent of each material are 100%；It will be prepared
Hard alloy mixed powder is fitted into powder feeder, and adjustment powder feeder powder feeding rate is 10-80g/cm3；Using plasma spraying
By the cladding of hard alloy mixed powder in cutter rake face and flank, cladding process is carried out technology using synchronous powder feeding system mode；
Plasma process parameter is as follows: power 20-80kW, Ar throughput 20-80 L/min, H2Throughput 10-60 L/min, scanning
Speed 2-50mm/s；
(3) cladding silicon nitride ceramics layer: configuration silicon nitride ceramics mixed powder, main component (weight percent): 40-60%
Si3N4, 10-20%ZrO2, 15-25%Ni60A, 2-5%PbO, 2-5%Mo, 2-5%TiB2, 0.5-2%BNNTs, 0.5-2%
CNTs, 0.5-2% graphene, the sum of weight percent of each material are 100%；By prepared silicon nitride ceramics mixed powder
It is fitted into powder feeder, adjustment powder feeder powder feeding rate is 10-80g/cm3；Using plasma spraying technology is by silicon nitride ceramics
Mixed powder cladding is carried out in hard alloy layer surface, cladding process using synchronous powder feeding system mode；Plasma process parameter is such as
Under: power 20-80kW, Ar throughput 20-80 L/min, H2Throughput 10-60 L/min, scanning speed 2-50mm/s；
(4) cladding cbn layer: configuration cubic boron nitride mixed powder, main component (weight percent): 50-60%
CBN, 20-30%Ni60A, 2-5%PbO, 2-5%Mo, 2-5%TiB2, 0.5-2%BNNTs, 0.5-2%CNTs, 0.5-2%
Graphene, the sum of weight percent of each material are 100%；Prepared cubic boron nitride mixed powder is packed into powder feeder
In, adjustment powder feeder powder feeding rate is 10-80g/cm3；Using plasma spraying technology melts cubic boron nitride mixed powder
Silicon nitride ceramics layer surface is overlayed on, cladding process is carried out using synchronous powder feeding system mode；Plasma process parameter is as follows: power
20-80kW, Ar throughput 20-80 L/min, H2Throughput 10-60 L/min, scanning speed 2-50mm/s；
(5) it post-processes: tool surface being modified after the completion of cladding, obtains the gradient hard conating self-lubricating knife tool, so that
Total coating thickness is 100-3000 μm.
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Citations (4)
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|---|---|---|---|---|
| JPS59174558A (en) * | 1983-03-24 | 1984-10-03 | タテホ化学工業株式会社 | Ceramic crosslinked formed body and manufacture |
| CN101426590A (en) * | 2006-02-23 | 2009-05-06 | 爱托特奇德国股份有限公司 | Antifriction coatings, methods of producing such coatings and articles including such coatings |
| CN105603387A (en) * | 2016-02-11 | 2016-05-25 | 广东工业大学 | Boron nitride composite coating, graded superfine hard alloy cutter provided with same and preparation method thereof |
| CN108300993A (en) * | 2018-01-26 | 2018-07-20 | 东南大学 | Silicon nitride-hard alloy gradient coating cutter and preparation method thereof |
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2019
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59174558A (en) * | 1983-03-24 | 1984-10-03 | タテホ化学工業株式会社 | Ceramic crosslinked formed body and manufacture |
| CN101426590A (en) * | 2006-02-23 | 2009-05-06 | 爱托特奇德国股份有限公司 | Antifriction coatings, methods of producing such coatings and articles including such coatings |
| CN105603387A (en) * | 2016-02-11 | 2016-05-25 | 广东工业大学 | Boron nitride composite coating, graded superfine hard alloy cutter provided with same and preparation method thereof |
| CN108300993A (en) * | 2018-01-26 | 2018-07-20 | 东南大学 | Silicon nitride-hard alloy gradient coating cutter and preparation method thereof |
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