CN110453219A - A method of enhancing agricultural machinery driving member surface property - Google Patents
A method of enhancing agricultural machinery driving member surface property Download PDFInfo
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- CN110453219A CN110453219A CN201910782666.XA CN201910782666A CN110453219A CN 110453219 A CN110453219 A CN 110453219A CN 201910782666 A CN201910782666 A CN 201910782666A CN 110453219 A CN110453219 A CN 110453219A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
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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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
- C23C26/02—Coating not provided for in groups C23C2/00 - C23C24/00 applying molten material to the substrate
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/003—Electroplating using gases, e.g. pressure influence
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
- C22C2026/006—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes with additional metal compounds being carbides
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Abstract
A method of enhancing agricultural machinery driving member surface property carries out purifying processing to agricultural machinery driving member surface first；It secondly is anode using agricultural machinery driving member as cathode, respectively by the Ni-based high-entropy alloy composite sheet containing Nano diamond particle, marmem piece, hard metal tip, utilize electric spark deposition equipment, Ni-based high-entropy alloy piece, marmem piece, hard metal tip containing Nano diamond particle are successively deposited on to processed agricultural machinery driving member surface, form the electric spark deposition layer in conjunction with agricultural machinery driving member atom；It will finally be put into the heat-treatment furnace of atmosphere of inert gases and heat containing the agricultural machinery driving member there are three types of alloy sheet sedimentary.The present invention is successively added three kinds of Ni-based high-entropy alloy containing Nano diamond particle, marmem, hard alloy alloys on agricultural machinery driving member surface to be modified to its surface by electric spark electro-deposition mode, has wear-resisting, high temperature resistant, the performance of toughening.
Description
Technical field
The invention belongs to agricultural machinery field of surface modification, and in particular to a kind of enhancing agricultural machinery driving member surface property
Method.
Background technique
Agricultural machinery driving member is generally as the crucial wearing piece in agricultural machinery, and material property is to its working life and agriculture
The working efficiency of industry machinery, farming effect have an important influence on；In order to improve the hardness of agricultural machinery transmission parts exterior portion and wear-resisting
Property, while center portion being made to keep enough intensity and toughness, effectively to extend the service life of agricultural machinery transmission parts, it is common be
Surface high-temp heat treatment is carried out to agricultural machinery soil-engaging component, in the prior art, the major technique side of surface high-temp heating heat treatment
Case has: carrying out integral quenching to agricultural transmission parts first, then carries out lonneal processing to its surface and obtain tempered martensite
Body, but its hardness is lower, and wearability is poor, cannot fully meet anti-to agricultural soil-engaging component surface in practical agricultural production operation
The requirement of performance is ground, for the hardness and wear-resisting property for improving parts surface, industrial common technical solution has: in parts surface
Prepare strengthened coat.
Summary of the invention
The purpose of the present invention is to solve the above problems, innovative synthesis is closed using high-entropy alloy, marmem, hard
The advantage of gold provides a kind of method for enhancing agricultural machinery driving member surface property.
The technical scheme is that a kind of method for enhancing agricultural machinery driving member surface property, the specific steps are as follows:
Step 1: polished agricultural machinery driving member surface, polished, the purifying processing of alcohol washes, it is spare；
Step 2: using agricultural machinery driving member as cathode, respectively by the Ni-based high-entropy alloy composite sheet containing Nano diamond particle,
Marmem piece, hard metal tip will successively contain Nano diamond particle using electric spark deposition equipment for anode
Ni-based high-entropy alloy piece, marmem piece, hard metal tip are deposited on processed agricultural machinery driving member surface, are formed
Electric spark deposition layer in conjunction with agricultural machinery driving member atom；
Step 3: by being put at the heat of protective gas atmosphere in step 2 containing the agricultural machinery driving member there are three types of alloy sheet sedimentary
Heating in furnace is managed, that is, completes the modification to agricultural machinery driving member surface.
It advanced optimizes, the Ni-based high-entropy alloy piece, shape memory in the step 2 containing Nano diamond particle close
Gold plaque, hard metal tip are the preparation method comprises the following steps: with high energy nanon ball-mill by the Ni-based high-entropy alloy containing Nano diamond particle
Powder, marmem powder, cemented carbide powder are ground to 13 ~ 15 μm of diameter, 17 ~ 22 μm, the fine powder of 90 ~ 96nm respectively, utilize
Fine powder is sufficiently stirred in organic binder, forms uniform paste cream, paste cream is pressed into a thickness of 1 using press ~
The composite sheet of 3mm is simultaneously cut out as required shape.
It advanced optimizes, the grinding method is as follows: the high-entropy alloy for being first 20 μm by the powder size of Mechanical Crushing
Powder, cemented carbide powder, marmem powder are respectively implanted in ball grinder, and 3.5MPa protective gas is filled with after vacuumizing and carries out ball
Mill, 1300 ~ 1450r/min of rotational speed of ball-mill, 60 ~ 67h of Ball-milling Time, ball material weight ratio 21.5:1.
It advanced optimizes, the organic binder is polyacrylate, polybutene, ethylene glycol, ethyl alcohol, acetone according to 3-5:
The weight ratio of 1-3:4-6:1-2:3-5 is mixed with.
It advanced optimizes, the Ni-based high-entropy alloy piece in the step 2 containing Nano diamond particle is
One or both of Ni9Co31Cr30B15Fe7Si6.5Nd1.5, NiAlCoCrFeTiMn, NiTaNbHfZrV.
It advanced optimizes, marmem piece is manganese-base alloy in the step 2, including following weight percent
Chemical constituent: Al 13 ~ 17%, Cr 2 ~ 11%, Ni 3 ~ 9%, Fe 43 ~ 49%, Si 5 ~ 8%, Zr 1 ~ 1.5%, V 0.8 ~ 1.2%, Nb
0.5 ~ 1.3%, remaining is Mn.
It advanced optimizes, hard metal tip is Cr in the step 23C2One in+WC+Co and ZrC, TiC, NbC, TaC
Kind or two kinds of mixture.
It advanced optimizes, the condition of electric spark deposition in the step 2 are as follows: 1500 ~ 1900W of power, frequency 1300 ~
1800 Hz, 80 ~ 140V of voltage, 1.2 ~ 1.5 min/cm of deposition rate2, the flow of protective gas is 7 ~ 10L/min.
It advanced optimizes, the preparation method of the Ni-based high-entropy alloy piece in the step 2 containing Nano diamond particle
Are as follows: using cobalt chromium or tantalum-niobium alloy as cathode, pure nickel plate is anode, in high-pressure carbon dioxide fluid environment, by receiving for 45 ~ 65g/L
Rice diamond particles are suspended in the electrolyte that nickel sulfate is main salt, are applied certain current density and are carried out electro-deposition, that is, obtain
Ni-based high-entropy alloy containing Nano diamond particle.
It advanced optimizes, the furnace temperature highest of heat-treatment furnace is set above the fusing of Ni-based high-entropy alloy in the step 3
More than temperature 60 C, heating time is 8 ~ 10h, actual temp curve are as follows:+490 DEG C of 280 DEG C/1h /+650 DEG C of 2h/30min
+ (1450 ~ 1650) DEG C/(4.5-6.5) h, room temperature is cooling after taking-up.
The invention has the benefit that
One, the present invention is closed the Ni-based high-entropy alloy containing Nano diamond particle, shape memory by electric spark deposition mode
Three kinds of gold, hard alloy alloy optimum organizations, are successively coated in agricultural machinery driving member table by the organic binder of autonomous configuration
Face is modified, integrated use high-entropy alloy high abrasion, marmem superplasticity, Cemented Carbide Hardness with carrying out surface to it
High particular advantages, the performance of cooperative reinforcing agricultural machinery driving member, the mainly Ni-based high entropy containing Nano diamond particle are closed
Gold improves the wearability of agricultural machinery driving member because its hardness of the addition of diamond particles is higher, and the addition of hard alloy is further
Its hardness is improved, and the addition of marmem helps to improve the toughness of coating, prevents first two alloy is really up to the mark from leading to it
Coating embrittlement falls off, in addition, electric spark deposition improves the bond strength of surface deposits and matrix, can effectively enhance agricultural machinery
Wearability, corrosion resistance, thermohardening and the high-temperature oxidation resistance on driving member surface, and surface roughness can be increased and extend agriculture
The fatigue life of machine driving member；
Two, for the problem for adding high-hard nano particle hardly possible in high-entropy alloy, present invention innovation uses high-pressure carbon dioxide fluid
Electro-deposition techniques high diffusivity, the characteristic of low viscosity, Nano diamond particle is successfully added in high-entropy alloy, prepares high entropy
Alloy-Tetrastichus sp composite material further promotes wearability, the corrosion resistance of high-entropy alloy, i.e., successfully prepares a nanometer Buddha's warrior attendant
The Ni-based high-entropy alloy of stone particle does not improve agricultural machinery driving member performance only and provides high-performance high-quality basal body coating layer, and
And it can also further improve the service life of agricultural machinery driving member；
Three, the method for developing electric spark deposition high-entropy alloy, shape memory alloy coating, by high-entropy alloy, marmem
Coating is applied respectively on agricultural machinery driving member surface, by the micron-scale effect of marmem and high-entropy alloy powder and hard
The nanometer size effect of matter alloy significantly increases the performance of agricultural machinery driving member；
Four, the advantages of present invention is in combination with function bionics, are first processed into function bionics surface for agricultural machinery driving member surface, so
It carries out the processes such as purifying processing, electric spark deposition, heat treatment again afterwards, can further improve agricultural machinery using function bionics surface
The surface property of driving member；
Five, through microhardness testers, friction wear testing machine, high temperature resistance furnace test show the microhardness of strengthened coat between
2371 ~ 3963HV is 6.7 ~ 11.2 times of basis material；Wearability of the invention is improved than basis material under same abrasive conditions
3.7 ~ 4.6 times；High-temperature oxidation resistance improves 2.9 ~ 5.1 times.
Detailed description of the invention
Fig. 1 is the interface topography of agricultural machinery driving member surface reforming layer
Fig. 2 is the XRD spectra of certain agricultural machinery component surface modified layer
Fig. 3 is the wear morphology of certain agricultural machinery driving member surface reforming layer
Fig. 4 is the coefficient of friction of certain agricultural machinery driving member surface reforming layer and matrix.
Specific embodiment
Technical solution in the embodiment of the present invention is purged, is fully described by below, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment 1
A method of enhancing agricultural machinery driving member surface property, the specific steps are as follows:
Step 1: polished agricultural machinery driving member surface, polished, the purifying processing of alcohol washes, it is spare；
Step 2: the high-entropy alloy powder containing Nano diamond particle, hard conjunction by the powder size of Mechanical Crushing for 20 μm
Bronze, marmem powder are respectively implanted in model NM-3000 high energy nanon ball-mill, and 3.5MPa nitrogen is filled with after vacuumizing
Gas carries out ball milling, and rotational speed of ball-mill 1300r/min, Ball-milling Time 60h, ball material weight ratio 21.5:1 is arranged, and containing after ball milling is received
The rice Ni-based high-entropy alloy powder of diamond particles, marmem powder, cemented carbide powder diameter be respectively 13 μm, 17 μm,
90nm, using organic binder to fine powder carry out sufficiently, stirring completely, uniform paste cream is formed, using press by paste cream
It is pressed into the composite sheet with a thickness of 1mm and cuts out as required shape, using agricultural machinery driving member as cathode, respectively by above-mentioned containing receiving
The Ni-based high-entropy alloy composite sheet of rice diamond particles, hard metal tip, marmem piece are anode, heavy using electric spark
Product equipment successively deposits the Ni-based high-entropy alloy piece containing Nano diamond particle, hard metal tip, marmem piece
On processed agricultural machinery driving member surface, the electric spark deposition layer in conjunction with agricultural machinery driving member atom is formd, here,
Electric spark deposition condition are as follows: power 1500W, frequency 1300 Hz, voltage 80V, 1.2 min/cm of deposition rate2, the flow of argon gas
For 7L/min；
Step 3: the heat-treatment furnace that nitrogen atmosphere will be put into step 2 containing the agricultural machinery driving member there are three types of alloy sheet sedimentary
The modification to agricultural machinery driving member surface is completed in interior heating.
It advanced optimizes, the organic binder is by polyacrylate, polybutene, ethylene glycol, ethyl alcohol, acetone according to 3:1:
The weight ratio of 4:1:3 is mixed with.
It advanced optimizes, the Ni-based high-entropy alloy piece in the step 2 containing Nano diamond particle is
Ni9Co31Cr30B15Fe7Si6.5Nd1.5。
It advanced optimizes, marmem piece includes for manganese-base alloy, including following weight percent in the step 2
The chemical constituent of ratio: Al 13%, Cr 2%, Ni 3%, Fe 49%, Si 5%, Zr 1%, V 0.8%, Nb 0.5%, remaining is Mn.
It advanced optimizes, hard metal tip is the mixture of Cr3C2+WC+Co and ZrC, TiC in the step 2.
Advanced optimize, the Ni-based high-entropy alloy in the step 2 containing Nano diamond particle the preparation method comprises the following steps:
Using cochrome as cathode, pure nickel plate is anode, and in high-pressure carbon dioxide fluid environment, temperature 314K, pressure is
10.5MPa, it is to apply in the electrolyte of main salt that the Nano diamond particle that the size of 45g/L is 60nm, which is suspended in nickel sulfate,
The current density of 5A/dm2 carries out electro-deposition, i.e. Ni-based high-entropy alloy of the acquisition containing Nano diamond particle.
It advanced optimizing, the furnace temperature highest of heat-treatment furnace is set as 1450 DEG C, heating time 10h in the step 3,
Actual temp curve are as follows:+490 DEG C of 280 DEG C/1h /+650 DEG C of the 2h/h of+1450 DEG C of 30min/6.5, room temperature is cold after taking-up
But.
Through model HV1000 microhardness testers, HT-600 type friction wear testing machine, the inspection of QSH-1400 high temperature resistance furnace
Survey shows that the microhardness of strengthened coat is 3963HV, is 11.2 times of basis material, same abrasive conditions lower substrate and Ben Fa
The wear weight loss of bright embodiment is respectively 4.74 grams and 1.28 grams, and wearability improves 3.7 times than basis material；High-temperature oxidation resistant
Property improves 2.9 times.
Embodiment 2
A method of enhancing agricultural machinery driving member surface property, the specific steps are as follows:
Step 1: surface polishing, polishing, the purifying processing of alcohol washes are carried out to agricultural machinery driving member surface, it is spare；
Step 2: the high-entropy alloy powder containing Nano diamond particle, hard conjunction by the powder size of Mechanical Crushing for 20 μm
Bronze, marmem powder are respectively implanted in model NM-3000 high energy nanon ball-mill, and 3.5MPa nitrogen is filled with after vacuumizing
Gas carries out ball milling, and rotational speed of ball-mill 1375r/min, Ball-milling Time 64h, ball material weight ratio 21.5:1 is arranged, and containing after ball milling is received
The rice Ni-based high-entropy alloy powder of diamond particles, marmem powder, cemented carbide powder diameter be respectively 14 μm, 20 μm,
93nm, using organic binder to fine powder carry out sufficiently, stirring completely, uniform paste cream is formed, by press by paste cream
It is pressed into the composite sheet of 2mm and cuts out as required shape, contain nanometer Buddha's warrior attendant using agricultural machinery driving member as cathode, respectively by above-mentioned
The Ni-based high-entropy alloy composite sheet of stone particle, hard metal tip, marmem piece are anode, are set using electric spark deposition
It is standby, successively Ni-based high-entropy alloy piece, hard metal tip, marmem piece containing Nano diamond particle are deposited on
Processed agricultural machinery driving member surface forms the electric spark deposition layer in conjunction with agricultural machinery driving member atom；Here, electrical fire
Flower sedimentary condition are as follows: power 1700W, frequency 1550 Hz, voltage 110V, 1.3 min/cm of deposition rate2, the flow of argon gas is
9L/min；
Step 3: the heat-treatment furnace that nitrogen atmosphere will be put into step 2 containing the agricultural machinery driving member there are three types of alloy sheet sedimentary
The modification to agricultural machinery driving member surface is completed in interior heating.
It advanced optimizes, the organic binder is by polyacrylate, polybutene, ethylene glycol, ethyl alcohol, acetone according to 4:2:
The weight ratio of 5:1:4 is mixed with.
It advanced optimizes, the Ni-based high-entropy alloy piece in the step 2 containing Nano diamond particle is
Ni9Co31Cr30B15Fe7Si6.5Nd1.5、NiTaNbHfZrV。
It advanced optimizes, marmem piece includes for manganese-base alloy, including following weight percent in the step 2
The chemical constituent of ratio: Al 15%, Cr 6.5%, Ni 6%, Fe 46%, Si 6.5%, Zr 1.25%, V 1.0%, Nb 0.9%, remaining
For Mn.
It advanced optimizes, hard metal tip is the mixture of Cr3C2+WC+Co and NbC in the step 2.
Advanced optimize, the Ni-based high-entropy alloy in the step 2 containing Nano diamond particle the preparation method comprises the following steps:
Using cobalt chromium or tantalum-niobium alloy as cathode, pure nickel plate is anode, in high-pressure carbon dioxide fluid environment, temperature 319K, pressure
For 11MPa, it is to apply in the electrolyte of main salt that the Nano diamond particle that the size of 55g/L is 65nm, which is suspended in nickel sulfate,
The current density of 4.5A/dm2 carries out electro-deposition, i.e. Ni-based high-entropy alloy of the acquisition containing Nano diamond particle.
The furnace temperature highest for advanced optimizing the heat-treatment furnace is set as 1550 DEG C, heating time 9h, and actual temp is bent
Line are as follows:+490 DEG C of 280 DEG C/1h /+650 DEG C of the 2h/h of+1550 DEG C of 30min/5.5, room temperature is cooling after taking-up.
Through model HV1000 microhardness testers, HT-600 type friction wear testing machine, the inspection of QSH-1400 high temperature resistance furnace
Survey shows that the microhardness of strengthened coat is 3145HV, is 8.9 times of basis material；Same abrasive conditions lower substrate and Ben Fa
The wear weight loss of bright embodiment is respectively 5.25 grams and 1.28 grams, and wearability improves 4.1 times than basis material；High-temperature oxidation resistant
Property improves 3.85 times.
Embodiment 3
A method of enhancing agricultural machinery driving member surface property, the specific steps are as follows:
Step 1: surface polishing, polishing, the purifying processing of alcohol washes are carried out to agricultural machinery driving member surface, it is spare；
Step 2: the high-entropy alloy powder containing Nano diamond particle, hard conjunction by the powder size of Mechanical Crushing for 20 μm
Bronze, marmem powder are respectively implanted in NM-3000 high energy nanon ball-mill, and the progress of 3.5MPa nitrogen is filled with after vacuumizing
Rotational speed of ball-mill 1450r/min, Ball-milling Time 67h, ball material weight ratio 21.5:1 is arranged in ball milling, contains nanometer Buddha's warrior attendant after ball milling
The Ni-based high-entropy alloy powder of stone particle, marmem powder, cemented carbide powder diameter be respectively 15 μm, 22 μm, 96nm, benefit
Fine powder stir sufficiently, completely with organic binder, uniform paste cream is formed, is pressed into paste cream by press
The composite sheet of 3mm is simultaneously cut out as required shape, contains Nano diamond particle using agricultural machinery driving member as cathode, respectively by above-mentioned
Ni-based high-entropy alloy composite sheet, hard metal tip, marmem piece be anode, using electric spark deposition equipment, successively
Ni-based high-entropy alloy piece, hard metal tip, marmem piece containing Nano diamond particle are deposited on processed
Agricultural machinery driving member surface, form the electric spark deposition layer in conjunction with agricultural machinery driving member atom；Here, electric spark deposition
Condition are as follows: power 1900W, frequency 1800 Hz, voltage 140V, 1.5 min/cm of deposition rate2, the flow of argon gas is 10L/
min；
Step 3: the heat-treatment furnace that nitrogen atmosphere will be put into step 2 containing the agricultural machinery driving member there are three types of alloy sheet sedimentary
The modification to agricultural machinery driving member surface is completed in interior heating.
It advanced optimizes, the organic binder is by polyacrylate, polybutene, ethylene glycol, ethyl alcohol, acetone according to 5:
The weight ratio of 3:6:2:5 is mixed with.
It advanced optimizes, the Ni-based high-entropy alloy piece in the step 2 containing Nano diamond particle is
NiAlCoCrFeTiMn and NiTaNbHfZrV.
It advanced optimizes, marmem piece includes for manganese-base alloy, including following weight percent in the step 2
The chemical constituent of ratio: Al 17%, Cr11%, Ni 9%, Fe 43%, Si 8%, Zr 1.5%, V 1.2%, Nb 1.3%, remaining is Mn.
It advanced optimizes, hard metal tip is the mixture of Cr3C2+WC+Co and NbC, TaC in the step 2.
Advanced optimize, the Ni-based high-entropy alloy in the step 2 containing Nano diamond particle the preparation method comprises the following steps:
Using cobalt chromium or tantalum-niobium alloy as cathode, pure nickel plate is anode, in high-pressure carbon dioxide fluid environment, temperature 322.6K, pressure
Power is 11.5MPa, and the Nano diamond particle that the size of 65g/L is 72nm is suspended in nickel sulfate and is in the electrolyte of main salt,
The current density for applying 4A/dm2 carries out electro-deposition, i.e. Ni-based high-entropy alloy of the acquisition containing Nano diamond particle.
The furnace temperature highest for advanced optimizing heat-treatment furnace in the step 3 is set as 1650 DEG C, heating time 8h, tool
Temperature curve are as follows:+490 DEG C of 280 DEG C/1h /+650 DEG C of the 2h/h of+1650 DEG C of 30min/4.5, room temperature is cooling after taking-up.
Through model HV1000 microhardness testers, HT-600 type friction wear testing machine, the inspection of QSH-1400 high temperature resistance furnace
Survey shows that the microhardness of strengthened coat is 2371HV, is 6.7 times of basis material；Same abrasive conditions lower substrate and Ben Fa
The wear weight loss of bright embodiment is respectively 5.93 grams and 1.29 grams, and wearability improves 4.6 times than basis material；High-temperature oxidation resistant
Property improves 5.1 times.
Embodiment 4
The matrix in the test specimen 1, test specimen 2 and 3 three kinds of test specimen and embodiment 1-3 of commercial type is chosen,
Its basis material is six kinds of agricultural machinery driving members in total of Q235 steel, carries out pure matrix respectively and has applied this hair in matrix surface
The measurement of microhardness after the strengthened coat of bright middle preparation and tough sex determination, as a result as shown in Table 1 and Table 2:
Microhardness average value/HV of certain the agricultural machinery driving member modified layer of table 1
The Fracture Toughness Criterion of certain the agricultural machinery driving member modified layer of table 2
As shown in Table 1 and Table 2, after surface applied modified coating prepared by the present invention, six kinds of agriculture driving members it is aobvious
Microhardness improves 6.7 times or more, and crack density is 5005 hereinafter, with this as it can be seen that strengthened coat energy prepared by the present invention
Effectively improve the hardness and toughness properties of agriculture driving member.
Main feature of the invention, application method, the course of work, basic principle and the present invention has been shown and described above
The advantages of.Industry technical staff is it should be appreciated that the present invention is not limited to the above embodiments, in above embodiments and description
Description merely illustrates the principles of the invention, and without departing from the spirit and scope of the present invention, the present invention can also be according to reality
Border situation has various changes and modifications, and these changes and improvements all fall within the protetion scope of the claimed invention.The present invention claims
Protection scope is defined by the appending claims and its equivalent thereof.
Claims (10)
1. a kind of method for enhancing agricultural machinery driving member surface property, which is characterized in that specific step is as follows:
Step 1: surface polishing, polishing, the purifying processing of alcohol washes are carried out to agricultural machinery conventional components surface, it is spare；
Step 2: using agricultural machinery conventional components as cathode, respectively by the Ni-based high-entropy alloy composite sheet containing Nano diamond particle,
Marmem piece, hard metal tip will successively contain Nano diamond particle using electric spark deposition equipment for anode
Ni-based high-entropy alloy piece, marmem piece, hard metal tip are deposited on processed agricultural machinery conventional components surface, are formed
Electric spark deposition layer in conjunction with agricultural machinery conventional components atom；
Step 3: by being put at the heat of protective gas atmosphere in step 2 containing the agricultural machinery driving member there are three types of alloy sheet sedimentary
Heating in furnace is managed, that is, completes the modification to agricultural machinery driving member surface.
2. a kind of method for enhancing agricultural machinery driving member surface property as described in claim 1, which is characterized in that the step
Ni-based high-entropy alloy piece, marmem piece, hard metal tip in two containing Nano diamond particle the preparation method comprises the following steps: with
Ball mill grinds Ni-based high-entropy alloy powder, marmem powder, cemented carbide powder containing Nano diamond particle respectively
To 13 ~ 15 microns of diameter, 17 ~ 22 microns, 90 ~ 96 nanometers of fine powder, fine powder stir sufficiently, completely using organic binder
It mixes, forms uniform paste cream, paste cream is pressed into the composite sheet of 1 ~ 3mm by press and cuts out as required shape.
3. a kind of method for enhancing agricultural machinery driving member surface property as claimed in claim 2, which is characterized in that the grinding
Method is as follows: high-entropy alloy powder, cemented carbide powder, marmem first by the powder size of Mechanical Crushing for 20 μm
Then powder is respectively implanted in ball grinder, 3.5MPa nitrogen is filled with after vacuumizing and carries out ball milling；Rotational speed of ball-mill 1300 ~ 1450 is set
Rev/min, Ball-milling Time 60 ~ 67 hours；Ball material weight ratio 21.5:1.
4. a kind of method for enhancing agricultural machinery driving member surface property as claimed in claim 2, which is characterized in that described organic
Stick is made by polyacrylate, polybutene, ethylene glycol, ethyl alcohol, acetone according to the ratio column mixing of 3-5:1-3:4-6:1-2:3-5
It is standby.
5. a kind of method for enhancing agricultural machinery driving member surface property as described in claim 1, which is characterized in that the step
Ni-based high-entropy alloy piece in two containing Nano diamond particle be Ni9Co31Cr30B15Fe7Si6.5Nd1.5,
One or both of NiAlCoCrFeTiMn, NiTaNbHfZrV.
6. a kind of method for enhancing agricultural machinery driving member surface property as described in claim 1, which is characterized in that the step
In two marmem piece be manganese-base alloy, the chemical constituent including following mass percent: Al 13 ~ 17%, Cr2 ~ 11%,
Ni 3 ~ 9, Fe 43 ~ 49, Si 5 ~ 8, Zr1 ~ 1.5, V0.8 ~ 1.2, Nb 0.5 ~ 1.3, remaining is Mn.
7. a kind of method for enhancing agricultural machinery driving member surface property as described in claim 1, which is characterized in that the step
Hard metal tip is Cr in two3C2The mixture of one or both of+WC+Co and ZrC, TiC, NbC, TaC.
8. a kind of method for enhancing agricultural machinery driving member surface property as described in claim 1, which is characterized in that the step
The condition of electric spark deposition in two are as follows: 1500 ~ 1900W of power, frequency 1300 ~ 1800 Hz, 80 ~ 140V of voltage, deposition rate
1.2~1.5 min/cm2, the flow of protective gas argon gas is 7 ~ 10L/min.
9. a kind of method for enhancing agricultural machinery driving member surface property as described in claim 1, which is characterized in that the step
Ni-based high-entropy alloy in two containing Nano diamond particle the preparation method comprises the following steps: using cobalt chromium or tantalum-niobium alloy as cathode, pure nickel
Plate is anode, and in high-pressure carbon dioxide fluid environment, it is main salt that the Nano diamond particle of 45 ~ 65g/L, which is suspended in nickel sulfate,
Electrolyte in, apply certain current density and carry out electro-deposition, that is, obtain the Ni-based high entropy containing Nano diamond particle and close
Gold.
10. a kind of method for enhancing agricultural machinery driving member surface property as described in claim 1, which is characterized in that the step
The furnace temperature highest of heat-treatment furnace is set as at least 60 DEG C higher than the fusion temperature of Ni-based high-entropy alloy in rapid three, heating time be 8 ~
10h, actual temp curve are as follows:+490 DEG C of 280 DEG C/1h /+650 DEG C of 2h/30min+(1050 ~ 1250) DEG C/4.5 h take
Room temperature is cooling after out.
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