CN109468675A - A method of preparing hard alloy powder surface diamond coatings material - Google Patents
A method of preparing hard alloy powder surface diamond coatings material Download PDFInfo
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- CN109468675A CN109468675A CN201811392518.9A CN201811392518A CN109468675A CN 109468675 A CN109468675 A CN 109468675A CN 201811392518 A CN201811392518 A CN 201811392518A CN 109468675 A CN109468675 A CN 109468675A
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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
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/02—Electrophoretic coating characterised by the process with inorganic material
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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
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/12—Electrophoretic coating characterised by the process characterised by the article coated
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Abstract
The present invention relates to ceramic cutting tool material preparation technical field, especially a kind of method that hard alloy powder surface diamond coatings material is prepared using electrophoresis method in electrophoresis tank.The material component quality proportioning for preparing diamond coating is wt.%: the tungsten carbide wc powder that granularity is 15 μm, 60-85%, diamond C powder 10-30%, the six water chlorination MgCl that granularity is 1 μm2·6H2O5-10%.Cemented carbide powder, diamond dust and magnesium chloride are weighed in coating material formulation ratio, it is added in anhydrous ethanol medium and configures electrophoresis liquid, ultrasonic disperse adds mechanical stirring 20min, anode, cathode is separately energized in electrophoresis apparatus, electrophoresis is carried out using constant-voltage method, time is 3min, then carries out being dispersed with stirring for 2min, and the drying 2 hours of 120 DEG C of vacuum oven is put into after electrophoresis five times.Powder is crossed into 120 meshes, just obtains the cemented carbide powder of package diamond coatings.The present invention improves the hardness of cemented carbide powder and the cutting ability of cutter material, extends cutting-tool's used life, has saved natural resources.
Description
One, technical field
The present invention relates to ceramic cutting tool material preparation technical fields, especially a kind of to prepare hard alloy powder surface Buddha's warrior attendant
The method of stone coating material.
Two, background of invention
Diamond cutter is due to high hardness and wearability, low-friction coefficient, high elastic modulus, highly thermally conductive, low
Thermal expansion coefficient, and it is small with nonferrous metal affinity the advantages that, can be used for hard brittle materia such as graphite, high abrasion
The Precision Machining of material, composite material, silumin and other toughness nonferrous materials.
The technology of preparing of current diamond-coated tools, the coating diamond usually on bar matrix, basis material
Blocky hard alloy is mostly used, existing technology mainly uses the coating processes such as PVD, CVD, electrophoretic deposition, such as HF CVD, fire
Flame combustion method, plasma chemical deposition method.These technologies are all to generate thin diamond in blocky cemented carbide substrate surfaces
Film.The diamond-coated tools of the method preparation face the easy peeling that a serious problem is diamond coatings, lead to Buddha's warrior attendant
The service life of stone cutter it is difficult to predict.Disbonding, diamond-coated tools just fail, and can not continue to use, and the Buddha's warrior attendant to fail
Stone coated cutting tool can not also be refaced or re-coating layer, and recycling is difficult, serious waste of resources.
The coating process of diamond cutter is quickly grown, but is badly in need of solving what disbonding diamond-coated tools just failed
Problem and diamond-coated tools service life unpredictable problem, there has been no good solutions.
Three, summary of the invention
The purpose of the present invention is overcoming the prior art preparing defect present in diamond-coated tools, a kind of system is provided
The method of standby hard gold powder surface diamond coating material.
Basic conception of the invention is to prepare diamond coatings using electrophoresis method in electrophoresis tank, and cathode is arranged in electricity
It swims below slot, using the big characteristic of cemented carbide powder density, is deposited in the cathode surface of bottom, cathode surface and hard close
Golden powder contact keeps cemented carbide powder negatively charged, and anode is arranged in the top of electrophoresis tank, and the electrode spacing of cathode and anode is
30mm is powered respectively to cathode and anode using DYY-6C electrophoresis apparatus；Diamond in electrophoresis liquid is under the action of electric field
In hard alloy powder surface depositing coating.
Its technical solution is that prepare the material component quality proportioning of diamond coating be wt.%: granularity is 15 μm
Tungsten carbide wc powder 60-89%, diamond C powder 8-30%, the magnesium chloride hexahydrate MgCl that granularity is 1 μm2·6H2O2-10%；
The processing step of preparation method is as follows:
(1) electrophoresis liquid is prepared: weighing hard alloy WC powder, diamond by the granularity and ratio of coating material formulation requirement
C powder and magnesium chloride hexahydrate MgCl2·6H2O is added in anhydrous ethanol medium and is configured to the mass concentration electrophoresis of 70g/L WC
Liquid carries out ultrasonic disperse and adds mechanical stirring 20min, prepares suspension；
(2) electrophoretic deposition: anode is fixed in electrophoresis tank, anode, cathode is separately energized in electrophoresis apparatus, using constant pressure
Method to electrophoresis liquid carry out electrophoresis, electrophoresis process parameter be voltage across poles be 60V, each electrophoresis time is 3min, then stop electricity
It swims and carries out being dispersed with stirring for 2min, then carry out electrophoresis next time, electrophoresis five times repeatedly, it is therefore an objective to apply WC powder surface
Layer is uniformly；
(3) dried and screened: the electrophoresis liquid that electrophoresis is terminated is dried and is sieved, and electrophoresis liquid is put into vacuum oven
It is 2 hours dry with 120 DEG C of temperature, dried bulk powder is crossed into 120 meshes, just obtains the hard of package diamond coatings
Alloy powder.
The present invention is since WC powder density is big, and when electrophoresis liquid is stablized, WC powder is largely gathered near bottom, cathode electricity
The more preferable feature of effect of swimming, the polytetrafluoroethylene (PTFE) of electrophoresis tank choice of material insulation, cathode and anode use 314 stainless steel materials.
Advantageous effects of the invention:
1, coating technology can be modified hard alloy powder surface performance, make powder in the spy for keeping hard alloy
The characteristic that diamond is had both on the basis of property, improves the hardness etc. of cemented carbide powder.
2, surface prepared by the present invention is coated with the cemented carbide powder of diamond coatings, is used to prepare diamond coatings knife
Tool, improves the cutting ability of cutter material, extends cutting-tool's used life, saved natural resources.
Four, Detailed description of the invention
Fig. 1 is the cross-sectional view of electrophoresis slot structure schematic diagram main view of the present invention；
Fig. 2 is WC powder stereoscan photograph of the present invention；
Fig. 3, Fig. 4, Fig. 5, Fig. 6 are the powder of hard alloy powder surface coating diamond prepared by the embodiment of the present invention 1
Coating morphology stereoscan photograph；
Fig. 7 is coated powder energy spectrum analysis of the present invention region；
Fig. 8 is the energy spectrum diagram of coated powder of the present invention；
Fig. 9 is the powder coating topography scan Electronic Speculum of hard alloy powder surface coating diamond prepared by the embodiment of the present invention 2
Photo.
Appended drawing reference: 1, anode terminal 2, anode fixed frame 3, anode 4, electrolytic cell 5, cathode terminal 6, yin
Pole.
Five, specific embodiment
It is described the specific embodiments of the present invention in detail in conjunction with attached drawing:
The present invention as shown in Figure 1 is to prepare diamond coatings, electrophoresis tank choice of material using electrophoresis method in electrophoresis tank
The polytetrafluoroethylene (PTFE) of insulation, cathode and anode are prepared using 314 stainless steel materials.Cathode is arranged below electrophoresis tank, using hard
The big characteristic of matter alloy powder density, is deposited in the cathode surface of bottom, cathode surface is contacted with cemented carbide powder makes hard
Alloy powder is negatively charged, and anode is arranged in the top of electrophoresis tank, and the electrode spacing of cathode and anode is 30mm, uses DYY-6C
Electrophoresis apparatus is powered respectively to cathode and anode.Diamond in electrophoresis liquid is under the action of electric field in cemented carbide powder
Surface depositing coating.
Embodiment 1:
The present embodiment selects 15 μm of granularity of hard alloy WC powder, the diamond C powder that granularity is 1 μm；Quality proportioning
Take tungsten carbide wc powder 82.3%；Diamond C powder 11.8%；Magnesium chloride hexahydrate MgCl2·6H2O5.9%.According to the matter of selection
Amount proportion weighs 28g tungsten carbide wc powder, 4g diamond C powder, 2g magnesium chloride hexahydrate MgCl2·6H2O.It needs to keep in implementation
The electrode spacing of cathode and anode is 30mm, is powered respectively using DYY-6C electrophoresis apparatus to cathode and anode.
(1) electrophoresis liquid is prepared: being implemented as shown in Fig. 1 in electrophoresis tank, first closes the hard worked good according to the ratio
Bronze end, diamond C powder and magnesium chloride hexahydrate MgCl2·6H2O is mixed in electrophoresis tank, and the dehydrated alcohol of 400mL is added
Electrophoresis liquid is made, electrophoresis tank is put into ultrasonic disperse equipment, 20min ultrasonic agitation and mechanical stirring are carried out to electrophoresis liquid
Prepare suspension；
(2) electrophoretic deposition: the present invention starts electrophoretic deposition process, electricity using cathodic deposition and power supply constant-voltage method
Swimming technological parameter is that voltage across poles is 60V, electrophoretic deposition 3min, then carries out ultrasonic agitation and mechanical stirring to electrophoresis liquid
2min, then electrophoretic deposition 3min is carried out, ultrasonic agitation and mechanical stirring 2min are carried out to electrophoresis liquid, so repeated five times, purpose
It is to make hard alloy substrate WC powder coating uniform in electrophoresis liquid；
(3) drying and screening: after electrophoresis process, the cemented carbide powder of obtained diamond coated coating is put into very
Empty drying box is 2 hours dry at 120 DEG C, then crosses 120 meshes, just obtains the cemented carbide powder of package diamond coatings.
The cemented carbide powder of obtained package diamond coatings is characterized, is the original of non-coating as shown in Fig. 2
The SEM shape appearance figure of beginning WC powder is compared as reference group and the WC powder after coating diamond C.As attached drawing 3, attached drawing 4,
It is the WC powder SEM shape appearance figure of cladding diamond C coating in surface manufactured in the present embodiment shown in attached drawing 5, it can be observed that applying
Layer cladding is complete, uniform.It as shown in Fig. 6, is the WC powder part SEM shape appearance figure of diamond C coated carbides, it can be with
Observe the method by electrophoresis, diamond C powder successful deposition is on substrate carbide WC powder surface.Experiment is obtained
The cemented carbide powders of package diamond coatings carry out energy spectrum analysis, as shown in Fig. 7 to carrying out power spectrum in black region
Analysis obtains attached energy spectrum diagram shown in Fig. 8, the presence of W element inside discovery diamond coatings, it was demonstrated that diamond dust cladding
It is WC powder, and non-self reunion.
Embodiment 2:
The present embodiment selects 15 μm of granularity of hard alloy WC powder, the diamond C powder that granularity is 1 μm；Quality proportioning
Take tungsten carbide wc powder 86.5%；Diamond C powder 10.8%；Magnesium chloride hexahydrate MgCl2·6H2O2.7%.According to the matter of selection
Amount proportion weighs 32g tungsten carbide wc powder, 4g diamond C powder, 1g magnesium chloride hexahydrate MgCl2·6H2O。
(1) electrophoresis liquid is prepared: the present embodiment is implemented using electrophoresis tank as shown in Fig. 1, will match according to the ratio first
Hard alloy WC powder, diamond C powder and the magnesium chloride Mg Cl got togather2·6H2O is mixed in electrophoresis tank, and 400mL is added
Dehydrated alcohol make electrophoresis liquid, electrophoresis tank is put into ultrasonic disperse equipment, to electrophoresis liquid carry out 20min ultrasonic agitation
And mechanical stirring；
(2) electrophoretic deposition: anode is fixed in electrophoresis tank, anode, cathode is separately energized in electrophoresis apparatus, using constant pressure
Method to electrophoresis liquid carry out electrophoresis, electrophoresis process parameter be voltage across poles be 60V, each electrophoresis time is 3min, then stop electricity
It swims and carries out being dispersed with stirring for 2min, then carry out electrophoresis next time, electrophoresis five times repeatedly, it is therefore an objective to apply WC powder surface
Layer is uniformly；
(3) dried and screened: the electrophoresis liquid that electrophoresis is terminated is dried and is sieved, and electrophoresis liquid is put into vacuum oven
It is 2 hours dry with 120 DEG C of temperature, dried bulk powder is crossed into 120 meshes, just obtains the hard of package diamond coatings
Alloy powder.
It as shown in Fig. 9, is the WC powder SEM shape appearance figure of cladding diamond C coating in surface manufactured in the present embodiment, it can be with
Observe that hard alloy powder surface has coating cladding.By the method for electrophoresis, diamond C powder successful deposition is in matrix WC
Powder surface.
Claims (1)
1. a kind of method for preparing hard alloy powder surface diamond coatings material is prepared in electrophoresis tank using electrophoresis method
Diamond coatings, cathode are arranged below electrophoresis tank, using the big characteristic of cemented carbide powder density, are deposited in the cathode of bottom
Surface, cathode surface is contacted with cemented carbide powder keeps cemented carbide powder negatively charged, and the top of electrophoresis tank is arranged in anode, yin
The electrode spacing of pole and anode is 30mm, is powered respectively using DYY-6C electrophoresis apparatus to cathode and anode；In electrophoresis liquid
Diamond is under the action of electric field in hard alloy powder surface depositing coating；It is characterized in that preparing diamond coating
Material component quality proportioning is wt.%: the tungsten carbide wc powder 60-89% that granularity is 15 μm, the diamond C powder that granularity is 1 μm
Last 8-30%, magnesium chloride hexahydrate MgCl2·6H2O2-10%；
The processing step of preparation method is as follows:
(1) electrophoresis liquid is prepared: weighing hard alloy WC powder, diamond C powder by the granularity and ratio of coating material formulation requirement
End and magnesium chloride hexahydrate MgCl2·6H2O is added in anhydrous ethanol medium and is configured to the mass concentration electrophoresis liquid of 70g/L WC, into
Row ultrasonic disperse adds mechanical stirring 20min, prepares suspension；
(2) electrophoretic deposition: anode is fixed in electrophoresis tank, anode, cathode is separately energized in electrophoresis apparatus, using constant-voltage method pair
Electrophoresis liquid carry out electrophoresis, electrophoresis process parameter be voltage across poles be 60V, each electrophoresis time is 3min, then stop electrophoresis simultaneously
Being dispersed with stirring for 2min is carried out, then carries out electrophoresis next time, electrophoresis five times repeatedly, it is therefore an objective to keep WC powder surface covering equal
It is even；
(3) dried and screened: the electrophoresis liquid that electrophoresis is terminated is dried and is sieved, by electrophoresis liquid be put into vacuum oven with
120 DEG C of temperature are 2 hours dry, and dried bulk powder is crossed 120 meshes, just obtain the hard alloy of package diamond coatings
Powder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811392518.9A CN109468675B (en) | 2018-11-21 | 2018-11-21 | Method for preparing hard alloy powder surface diamond coating material |
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| CN201811392518.9A CN109468675B (en) | 2018-11-21 | 2018-11-21 | Method for preparing hard alloy powder surface diamond coating material |
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| CN109468675A true CN109468675A (en) | 2019-03-15 |
| CN109468675B CN109468675B (en) | 2020-08-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111020676A (en) * | 2019-12-25 | 2020-04-17 | 长沙新材料产业研究院有限公司 | Method for processing diamond coating hard alloy and method for processing hard alloy cutter |
| CN114086179A (en) * | 2021-11-18 | 2022-02-25 | 太原理工大学 | Preparation method of diamond wear-resistant coating on surface of copper substrate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101812710A (en) * | 2010-04-26 | 2010-08-25 | 长沙岱勒金刚石制品有限公司 | Diamond wire saw production method of surface modified diamond |
| CN101838838A (en) * | 2010-04-26 | 2010-09-22 | 长沙岱勒金刚石制品有限公司 | Preparation method of composite diamond fretsaw |
| EP2280095A2 (en) * | 2009-07-30 | 2011-02-02 | Ewald Dörken Ag | Method for electrochemical coating a workpiece |
| CN103228821A (en) * | 2010-08-13 | 2013-07-31 | 第六元素研磨剂股份有限公司 | Polycrystalline superhard material |
-
2018
- 2018-11-21 CN CN201811392518.9A patent/CN109468675B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2280095A2 (en) * | 2009-07-30 | 2011-02-02 | Ewald Dörken Ag | Method for electrochemical coating a workpiece |
| CN101812710A (en) * | 2010-04-26 | 2010-08-25 | 长沙岱勒金刚石制品有限公司 | Diamond wire saw production method of surface modified diamond |
| CN101838838A (en) * | 2010-04-26 | 2010-09-22 | 长沙岱勒金刚石制品有限公司 | Preparation method of composite diamond fretsaw |
| CN103228821A (en) * | 2010-08-13 | 2013-07-31 | 第六元素研磨剂股份有限公司 | Polycrystalline superhard material |
Non-Patent Citations (1)
| Title |
|---|
| 赵运伟: "电泳-电沉积法复合镀层的制备及其摩擦学性能研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111020676A (en) * | 2019-12-25 | 2020-04-17 | 长沙新材料产业研究院有限公司 | Method for processing diamond coating hard alloy and method for processing hard alloy cutter |
| CN114086179A (en) * | 2021-11-18 | 2022-02-25 | 太原理工大学 | Preparation method of diamond wear-resistant coating on surface of copper substrate |
| CN114086179B (en) * | 2021-11-18 | 2023-08-04 | 太原理工大学 | Preparation method of diamond wear-resistant coating on surface of copper matrix |
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| CN109468675B (en) | 2020-08-14 |
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