CN106222729B - Overcritical composite plating processing drill method based on mobile anode - Google Patents

Overcritical composite plating processing drill method based on mobile anode Download PDF

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Publication number
CN106222729B
CN106222729B CN201610587719.9A CN201610587719A CN106222729B CN 106222729 B CN106222729 B CN 106222729B CN 201610587719 A CN201610587719 A CN 201610587719A CN 106222729 B CN106222729 B CN 106222729B
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anode
drill bit
mobile
mobile anode
processed
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CN106222729A (en
Inventor
雷卫宁
刘维桥
李小平
王创业
钱海峰
刘丽琴
沈宇
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Jiangsu University of Technology
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Jiangsu University of Technology
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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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/10—Agitating of electrolytes; Moving of racks
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
    • 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
    • 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
    • C25D5/04—Electroplating with moving electrodes
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated

Abstract

The present invention provides a kind of overcritical composite plating tool bit method based on mobile anode, and the key step of this method includes：The matrix material of drill bit is pre-processed, is allowed to the ability for possessing electro-deposition nano-composite plate；The electroplate liquid configured is added into reactor, after sealing, is passed through CO2Gas, surfactant is added, the plating system formed under super critical condition；Setting meets the parameters such as electric current, temperature and the mechanical agitation speed of electro-deposition requirement；The relative position between anode and cathode is adjusted, anode translational speed and stroke is set, switches on power, nano-composite plate is fully deposited to the processed bit face as cathode body；Drill bit after electro-deposition is removed clean, obtaining surface has the drill bit of high-performance composite Nano coating.Bit face tissue made from the method for the present invention is fine and closely woven, and wearability and hardness all have a distinct increment, service life increase.

Description

Overcritical composite plating processing drill method based on mobile anode
The application is Application No. 201410412652.6, and the applying date is August in 2014 20, and invention and created name is The divisional application of the application for a patent for invention of " method of the overcritical composite plating processing drill based on mobile anode ".
Technical field
The present invention relates to electrochemical deposition processing technique field, and in particular to a kind of based on the overcritical compound of mobile anode The method for electroplating processing drill.
Background technology
Supercritical fluid（Supercritical Fluid）Refer to that pure material is in critical point（Critical pressure and critical Temperature）During the above, the one kind showed is between liquid and gaseous fluid.In Near The Critical Point, supercritical fluid it is close Phenomenon jumpy occurs for the physical property of all fluids such as degree, viscosity, solubility, thermal capacity, dielectric constant.CO2Gas has Environmentally friendly, non-ignitable, nontoxic, inertia, deposit enriches and critical pressure（7.39MPa）With temperature (31.1 DEG C) it is less high the advantages that, because This supercritical CO2Fluid is widely used.Due to supercritical CO2With relatively low viscosity（0.03-0.1 MPa·s）Higher Diffusion coefficient（10- 4 cm2·s-1）, good condition can be provided in electroforming system for mass transfer.
The moulding material of current industrial drill bit is often using titanium alloy, diamond or Special steel material etc., these materials The drill bit of material prepares complex process, high expensive and performance is not excellent enough, and uses nano composite material can be preferably Make up these shortcomings.Industrial drill bit often uses high-speed steel and special steel etc. to be used as matrix material, and the matrix material is generally difficult to Electrochemical deposition processing is directly carried out, and after using the method for chemical plating to pre-process matrix material, then cause in the base Nano compound electroplating is carried out on body to be possibly realized.When nano particle uniformly is compounded in into metal matrix material, nano particle exists The problem of reunion occurred during electroforming and poor macro-uniformity, is very prominent.Shaken mostly using stirring, ultrasound at present Move, add the modes such as dispersant to handle the agglomeration of nano particle, but because of former mould（Metal parts）It is different, during plating Electric field, flow field uniformity are whard to control etc., can still cause nanoparticle agglomerates and skewness in nano composite electroforming deposit.Receive The reunion of rice grain and skewness will cause the cast layer mechanical property difference of different parts huge, have a strong impact on its use Performance.
At present, the process and device of electrodeposited nanocrystalline composite and micro-workpiece be under supercritical environment There is finding.Chinese patent literature if Authorization Notice No. is CN 101092716B discloses a kind of trickle plating of supercritical fluid Moulding process and its device, it is with SCF-CO2The shaping of micro-structure part, the gold as obtained by this method are carried out for plating environment Category electroplates layer surface depositing homogeneous, without buildup, and cast layer tissue is fine and closely woven smooth, but gained cast layer is single metal, is not suitable for Composite plating shaping containing nano particle；And for example publication No. is that CN 102146573A Chinese patent literature proposes one kind The method of preparing nano composite material by supercritical fluid electroforming, it is mainly the electro-deposition system under mechanical agitation subsidiary conditions Standby metal-base nanometer composite material, Electric Field Distribution is fixed, from the point of view of its parameter setting and anode and cathode are set, it is impossible to column Or tubulose class negative electrode carries out effective deposition nano-composite plate.
The content of the invention
The purpose of the present invention is：Agglomeration of the nano particle in electroplating process is controlled, is being electroplated for negative electrode drill bit During can not be coated with nano composite material well, using the overcritical composite plating method based on the mobile anode of matching, Composite deposite is enabled to become to be uniformly dispersed in negative electrode bit face, surfacing, dense structure, crystal grain is tiny, performance is excellent It is different.
The technical scheme is that：The side of the overcritical composite plating processing drill based on mobile anode of the present invention Method, implemented using the overcritical composite plating device based on mobile anode, should the overcritical composite plating dress based on mobile anode Put including reactor, dc source component, mechanical agitator, carbon dioxide steel cylinder and high-pressure pump；Dc source component bag Include power supply, anode stub and cathode bar；It is characterized in：The above-mentioned overcritical composite plating device based on mobile anode also includes moving Dynamic anode assemblies, drive component and the processed drill bit as cathode body；
Above-mentioned mobile anode assemblies include fixed connecting plate and mobile anode；Mobile anode is fixed with fixed connecting plate to be connected Connect；Drive component includes servomotor, driving leading screw and connecting rod；Driving leading screw is built-in with the elastic conducting electric wire being insulated from Circle；Servomotor is connected with driving lead screw transmission；The left end of connecting rod is fixedly connected with fixed connecting plate；The right-hand member of connecting rod with Driving leading screw is fixedly connected；Mobile anode by the elastic conduction coil built in fixed connecting plate, connecting rod, driving leading screw and Anode stub electrically connects with the positive pole of power supply；Be processed drill bit upper end be fixedly connected with the lower end of cathode bar and by cathode bar with The negative pole electrical connection of power supply；The mobile anode of above-mentioned mobile anode assemblies can be processed relatively under the driving of drive component Drill bit upward and downward moves back and forth；
The mobile anode of above-mentioned mobile anode assemblies is provided with 4；This 4 mobile anodes are fixedly installed on fixed connecting plate Four corners；It is processed drill bit and is provided with 4,4 processed drill bits corresponds to each setting 1 respectively with 4 mobile anodes；
The cylindric pure nickel thin-walled ring that above-mentioned mobile anode is high 2cm, diameter 3cm, thickness are 2mm；It is processed drill bit The distance between outer wall and inwall of mobile anode be 1cm.
The method of processing drill, comprises the following steps：
1. carrying out chemical plating in advance to the matrix for being processed drill bit, last layer is plated in the matrix surface for being processed drill bit It is easy to carry out the fine copper or pure nickel of electro-deposition；
2. the binary system electroplate liquid of the hard particles containing nanometer prepared and compound additive is added in reactor, Gu It is set for the processed drill bit for cathode body；The position of the mobile anode of the mobile anode assemblies of regulation to move anode can be relative Moved up and down in processed drill bit；Above-mentioned electroplate liquid is the nickel salt solution of sulfur acid nickel and nickel chloride；Nanometer hard particles be 30~60nm of diameter diamond nano-particles；Compound additive is made up of dodecane base class compound and ether compound Additive；Above-mentioned electroplate liquid also includes the boric acid as electro-deposition sustained release agent that concentration is 30g/L~60g/L；
3. carbon dioxide is passed through into reactor, control temperature in reactor 35~70 DEG C, pressure 8~ In the range of 20MPa, form the ternary using supercritical carbon dioxide emulsion as carrier and electroplate system；
4. set mobile anode relative to the processed drill bit as cathode body move up and down maximum single direction stroke as 5cm；Using at the uniform velocity or simple harmonic motion move mode, average speed control in 1-20mm/s；Electrodeposition time is 1-3 hours； Nano-composite plate is obtained under the stirring auxiliary of mechanical agitator；
5. electro-deposition finishes, by post processing, the drill bit with nano-composite plate of required performance requirement is obtained.
Further scheme is：The reactor of the above-mentioned overcritical composite plating device based on mobile anode includes main body And liner；Liner is on the internal perisporium of main body；Air inlet is provided with the left of the upper end of the main body of reactor；The main body of reactor Leakage fluid dram is provided with the right side of upper end；The body interior of reactor is provided with heating coil；Mechanical agitator is arranged in reactor；Machinery Agitator is worked using level to intermittent stirring mode；High-pressure pump is used for the carbon dioxide of carbon dioxide steel cylinder memory storage The air inlet for the main body that gas passes through reactor takes out pressure into main body；
The fixed connecting plate of above-mentioned mobile anode assemblies is the plate body part that is integrally square, four angles of fixed connecting plate Portion is provided with the breach of arc；Fixed connecting plate is by carrying out insulation, high pressure resistant, acidproof engineering plastics system outside copper frame structure Into；Mobile anode is metallic conductor part；On the arc notch in four corners that mobile anode is fixedly installed on fixed connecting plate and Electrically connected with the copper frame structure of fixed connecting plate；
The driving leading screw of drive component is hollow leading screw；Above-mentioned elastic conduction coil is arranged on the hollow of driving leading screw In position；And the left side of driving leading screw is stretched out in the lower end of the elastic conduction coil；Driving is stretched out in the upper end of the elastic conduction coil The upper end of leading screw；The elastic conduction coil is insulated with driving leading screw by insulation spacer；Leading screw is driven by its underpart and servo electricity Machine is connected；Above-mentioned connecting rod outside copper post by carrying out insulation, high pressure resistant, acidproof engineering plastics are made.
Further scheme is：The concentration of above-mentioned nickel salt solution is 300~450g/L；The concentration of Nano diamond particle For 1~20g/L；The concentration of compound additive is 0.1~2g/L.
Further scheme is：The current density of the power supply output of above-mentioned dc source component is 7A/dm2；Above-mentioned Mechanical agitator is arranged in reactor；For mechanical agitator level to intermittent stirring, stir speed (S.S.) is 200~500rpm.
Further scheme also has：Above-mentioned compound additive is by lauryl sodium sulfate and polyethylene glycol trimethyl nonyl Base ether；The concentration of lauryl sodium sulfate is 0.2g/L, and the concentration of polyethylene glycol trimethyl nonyl ethers is 0.8g/L.
The present invention has positive effect：（1）The present invention is by using mobile anodization method, as cathode body It is processed drill bit and ensure that each to uniformity of its surface in plating so that is electrodeposited in nano combined on processed drill bit Coating can be smooth, uniform；Simultaneously using horizontal to intermittent stirring mode, so that nano particle has sedimentation in electroplating solution Trend, further improve uniformity and uniformity during nano combined electroforming.(2) present invention can be in non-smooth metal The excellent nano-composite plate of forming properties on piece surface.(3) present invention can be according to use demand, by nano particle Processing, form the nano-composite plate of different performance on metal parts using different nanometer hard materials.（4）The present invention Overcritical nano compound electroplating can be carried out to multiple processed drill bits as cathode body simultaneously, can prepared efficiently, in batches Go out the drill bit of the nano composite material of excellent performance.
Brief description of the drawings
Fig. 1 is the schematic diagram of electrotyping forming device of the present invention；
Fig. 2 is the structural representation of mobile anode in Fig. 1, and mobile anode and the quilt as cathode body are also show in figure The position matching of processing drill.
Reference in above-mentioned accompanying drawing is as follows：
Reactor 1, main body 11, air inlet 11-1, leakage fluid dram 11-2, heating coil 11-3, liner 12；
Mobile anode assemblies 2, fixed connecting plate 21, mobile anode 22；
Drive component 3, servomotor 31；Drive leading screw 32, connecting rod 33；
Dc source component 4, power supply 41, anode stub 42, cathode bar 43；
Mechanical agitator 5；
Carbon dioxide steel cylinder 6；
High-pressure pump 7,
It is processed drill bit 8.
Embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
（Embodiment 1）
See Fig. 1 and Fig. 2, the overcritical composite plating processing drill method based on mobile anode of the present embodiment, using base Implement in the overcritical composite plating device of mobile anode, the overcritical composite plating device based on mobile anode is mainly by reacting Device 1, mobile anode assemblies 2, drive component 3, dc source 4, mechanical agitator 5, carbon dioxide steel cylinder 6 and high-pressure pump 7 Composition.
Reactor 1 is mainly made up of main body 11 and liner 12.Air inlet is provided with the left of the upper end of the main body 11 of reactor 1 11-1；Leakage fluid dram 11-2 is provided with the right side of the upper end of reactor 1；The inside of main body 11 of reactor 1 is provided with heating coil 11-3.Liner 12 on the internal perisporium of main body 11.
Mobile anode assemblies 2 are made up of fixed connecting plate 21 and mobile anode 22.Fixed connecting plate 21 is square to be overall Plate body part, four corners of fixed connecting plate 21 are provided with the breach of arc.Fixed connecting plate 21 be by copper frame structure outside Carry out insulation, high pressure resistant, acidproof engineering plastics are made.Mobile 22, anode preferably uses high 2cm, diameter 3cm, thickness in implementing For 2mm cylindric pure nickel thin-walled ring；4 are preferably used in mobile the present embodiment of anode 22, this 4 mobile anodes 22, which are fixed, to be set Put on the arc notch in four corners of fixed connecting plate 21 and electrically connected with the copper frame structure of fixed connecting plate 21.
Drive component 3 mainly includes servomotor 31, driving leading screw 32 and connecting rod 33.In the present embodiment of servomotor 31 It is preferred that the DC servo motor using model KT290-A6-50.Driving leading screw 32 is hollow leading screw, is driven in leading screw 32 Empty position is built-in with elastic conduction coil；The left side of driving leading screw 32 is stretched out in the lower end of the elastic conduction coil；The elastic conduction The upper end of driving leading screw 32 is stretched out in the upper end of coil；And the elastic conduction coil is insulated with driving leading screw 32 by insulation spacer； Driving leading screw 32 is connected by its underpart and servomotor 31.Connecting rod 33 outside copper post by carrying out insulation, high pressure resistant, acidproof work Engineering plastics are made.The right-hand member of connecting rod 33 is fixedly connected with driving leading screw 32；And connecting rod 33 is by the right-hand member of its internal copper post Electrically connected with the lower end of the elastic conduction coil in driving leading screw 32；The fixation of the left end of connecting rod 33 and mobile anode assemblies 2 The right side central of connecting plate 21 is fixedly connected；And connecting rod 33 is by the left end of its internal copper post and the copper of fixed connecting plate 21 Frame structure electrically connects.
Dc source component 4 is made up of power supply 41, anode stub 42 and cathode bar 43.The upper end of anode stub 42 and power supply 41 Positive pole electrically connects, and the lower end of anode stub 42 electrically connects with the upper end of the elastic conduction coil in the driving leading screw 32 of drive component 3； So as to by anode stub 42, driving leading screw 32 in elastic conduction coil, connecting rod 33, fixed connecting plate 21 copper framework knot Structure electrically connects mobile anode 22 with the positive pole of power supply 41.The upper end of cathode bar 43 electrically connects with the negative pole of power supply 41, is processed The upper end of drill bit 8 is fixed with the lower end of cathode bar 43 and electrically connected.It is processed drill bit 8 and is used as cathode body.Drill bit 8 is processed to set In on the axis in the mobile anode 22 of mobile anode assemblies 2；And it is processed the inwall of the outer wall and mobile anode 22 of drill bit 8 The distance between be 1cm.
Mechanical agitator 5 is arranged in reactor 1；Mechanical agitator 5 is worked using level to intermittent stirring mode, so that Obtain nano particle has Subsidence trend in electroplating solution, improves uniformity and uniformity during nano combined electroforming.Machinery Horizontal direction intermittent stirring is stirred, stir speed (S.S.) is 200~500rpm.
Carbon dioxide steel cylinder 6 is used to store carbon dioxide.
High-pressure pump 7 is used for the main body 11 that the carbon dioxide of the memory storage of carbon dioxide steel cylinder 6 is passed through into reactor 1 Air inlet 11-1 pressure is taken out into main body 11.
The mobile anode 22 of foregoing mobile anode assemblies 2 surrounds processed drill bit 8 and entered under the driving of drive component 3 The motion of row upward and downward；In the present embodiment, the maximum single direction stroke that mobile anode 22 is processed drill bit 8 relatively is 5cm；Using even Speed or the move mode of simple harmonic motion, average speed are controlled in 1-20mm/s.
The overcritical composite plating processing drill method based on mobile anode of the present embodiment, with Ni-based benefit processing drill 8 Illustrated exemplified by electro-deposition Nano diamond composite, its processing method mainly includes the following steps that：
1. carrying out chemical plating in advance to the matrix for being processed drill bit 8, one is plated in the matrix surface for being processed drill bit 8 Layer is easy to carry out the metal of electro-deposition；Fine copper or pure nickel may be selected in the metal.In the present embodiment, it is preferred to use in processed drill bit 8 matrix surface plates the uniform copper layer of about 10 μ m-thicks.
2. it is molten to add nickel salt into the reactor 1 of the overcritical composite plating device based on mobile anode of the present embodiment Liquid, boric acid, Nano diamond particle and compound additive, stir 30 minutes, make that it is sufficiently mixed and nano particle uniformly divides Dissipate.Boric acid is optionally added, the concentration of boric acid is 30g/L~60g/L as electro-deposition sustained release agent.
Nickel salt solution is the solution of sulfur acid nickel and nickel chloride；Wherein nickel sulfate dosage is 300~400g/L, and nickel chloride is used Measure as 30~50g/L；Diamond nano-particles, a diameter of 30~60nm, its dosage are 5~15g/L；Described compound additive Formed for dodecane base class compound and ether compound, wherein dodecane base class compound amount is 0.1~2g/L, ethers Compound dosage is 0.1~1g/L.
In the present embodiment, additive preferably uses lauryl sodium sulfate and polyethylene glycol trimethyl nonyl ethers.Each material Concentration be preferably:Nickel sulfate 300g/L, nickel chloride 35g/L, boric acid 40g/L, Nano diamond particle 15g/L, dodecyl Sodium sulphate 0.2g/L, polyethylene glycol trimethyl nonyl ethers 0.8g/L.
3. start high-pressure pump 7, by the carbon dioxide in carbon dioxide steel cylinder 6 from the main body 11 of reactor 1 Air inlet 11-1 is taken out in the main body 11 for being pressed onto reactor；Control pressure is 13MPa；Make alternating current adding by main body 11 simultaneously Heat coil 11-3 is heated in the presence of electromagnetic induction, will by the control of the size of the current strength to alternating current Temperature control preferably 50 DEG C in the present embodiment, under above-mentioned pressure and temperature, is carried out at 35~70 DEG C by mechanical agitator 5 Stir and form the supercritical fluid electroforming solution containing Nano diamond particle.In the present embodiment, carbon dioxide is close Test pressure in the main body 11 of the reactor 1 closed is 8~20MPa.
4. consolidate as the upper end of the processed drill bit 8 of cathode body and the lower end of the cathode bar 43 of dc source component 4 Fixed electrical connection；The upper end of the cathode bar 43 of dc source component 4 is electrically connected with the negative electrode of the power supply 41 of dc source component 4； The upper end of the anode stub 42 of dc source component 4 is electrically connected with the anode of power supply 41；By the lower end of anode stub 42 and driving group The driving leading screw 32 of part 3 is fixedly connected；The servomotor 31 for driving leading screw 32 and drive component 3 is connected；By driving group The connecting rod 33 of part 3 is fixedly connected with the fixed connecting plate 21 of mobile anode assemblies 2；It is processed drill bit 8 and is located at mobile anode unit On axis in the mobile anode 22 of part 2；And make the distance between inwall for the outer wall and mobile anode 22 for being processed drill bit 8 For 1cm；
The current density for setting the power supply 41 of dc source component 4 to export is 1~13A/dm2, preferably adopt in the present embodiment Use 7A/dm2；The maximum single direction stroke for setting the relatively processed drill bit 8 of mobile anode 22 of mobile anode assemblies 2 is 5cm；It is mobile Mode is using at the uniform velocity or simple harmonic motion, and average speed control is in 1~20mm/s, and Electric Field Distribution is more uniform during causing electroforming.
5. starting the servomotor 31 of drive component 3, the mobile anode 21 of mobile anode assemblies 2 is controlled according to the ginseng of setting Number moves up and down；Mechanical agitator 5 is synchronous to use level to intermittent stirring；Connect the power supply 41 of dc source component 4；Make Nickel ion is obtained quickly and efficiently to deposit on the processed drill bit 8 as cathode body with Nano diamond particle.The present embodiment In, electrodeposition time is 1~3 hour.
6. after electroforming, supercritical fluid electroforming solution is led by the leakage fluid dram 11-2 in the main body 11 of reactor 1 Enter in gas-liquid separator, the carbon dioxide and electroforming solution of separation, which are separately recovered in retracting device, to be recycled.
7. processed drill bit 8 is taken out from reactor 1, air-dry clean by pickling again by washing, that is, obtain and quilt The nano particle that the matrix of processing drill 8 is combined closely is evenly distributed, dense structure, crystal grain are tiny, surfacing, excellent performance Nano composite material electroformed layer.
Above example is the explanation to the embodiment of the present invention, rather than limitation of the present invention, relevant technology The technical staff in field without departing from the spirit and scope of the present invention, can also make various conversion and change and obtain To corresponding equivalent technical scheme, therefore all equivalent technical schemes should be included into the patent protection model of the present invention Enclose.

Claims (1)

  1. A kind of 1. overcritical composite plating processing drill method based on mobile anode, using based on the overcritical multiple of mobile anode Electroplanting device is closed to implement；The described overcritical composite plating device based on mobile anode includes reactor（1）, dc source group Part（4）, mechanical agitator（5）, carbon dioxide steel cylinder（6）And high-pressure pump（7）；Described dc source component（4）Including Power supply（41）, anode stub（42）And cathode bar（43）；It is characterized in that：The described overcritical composite plating based on mobile anode Device also includes mobile anode assemblies（2）, drive component（3）With the processed drill bit as cathode body（8）；
    Described mobile anode assemblies（2）Including fixed connecting plate（21）With mobile anode（22）；Mobile anode（22）With fixation Connecting plate（21）It is fixedly connected；Drive component（3）Including servomotor（31）, driving leading screw（32）And connecting rod（33）；Driving Leading screw（32）It is built-in with the elastic conduction coil being insulated from；Servomotor（31）With driving leading screw（32）Drive connection；Connection Bar（33）Left end and fixed connecting plate（21）It is fixedly connected；Connecting rod（33）Right-hand member with driving leading screw（32）It is fixedly connected； Mobile anode（22）Pass through fixed connecting plate（21）, connecting rod（33）, driving leading screw（32）Built-in elastic conduction coil and Anode stub（42）With power supply（41）Positive pole electrical connection；It is processed drill bit（8）Upper end and cathode bar（43）Lower end fix connect Connect and pass through cathode bar（43）With power supply（41）Negative pole electrical connection；Described mobile anode assemblies（2）Mobile anode（22） In drive component（3）Driving under, drill bit can be processed relatively（8）Upward and downward moves back and forth；
    Described mobile anode assemblies（2）Mobile anode（22）Provided with 4；This 4 mobile anodes（22）It is fixedly installed on Determine connecting plate（21）Four corners；It is processed drill bit（8）Provided with 4,4 processed drill bits（8）With 4 mobile anodes （22）Each setting 1 is corresponded to respectively；
    Described mobile anode（22）The cylindric pure nickel thin-walled ring for being 2mm for high 2cm, diameter 3cm, thickness；It is processed drill bit （8）Outer wall and mobile anode（22）The distance between inwall be 1cm；
    The method of processing drill, comprises the following steps：
    1. to being processed drill bit（8）Matrix carry out in advance chemical plating, in processed drill bit（8）Matrix surface plate one Layer is easy to carry out the fine copper or pure nickel of electro-deposition；
    2. the binary system electroplate liquid of the hard particles containing nanometer prepared and compound additive is added into reactor（1）In, Gu It is set for the processed drill bit for cathode body（8）；The mobile anode assemblies of regulation（2）Mobile anode（22）Position to move Anode（22）Can be relative to processed drill bit（8）Move up and down；Described electroplate liquid is molten for the nickel salt of sulfur acid nickel and nickel chloride Liquid；The diamond nano-particles that nanometer hard particles are 30~60nm of diameter；Compound additive is by dodecane base class compound With the additive of ether compound composition；It is being sustained as electro-deposition for 30g/L~60g/L that described electroplate liquid, which also includes concentration, The boric acid of agent；
    3. to reactor（1）In be passed through carbon dioxide, control reactor（1）Interior temperature 35~70 DEG C, pressure 8~ In the range of 20MPa, form the ternary using supercritical carbon dioxide emulsion as carrier and electroplate system；
    4. the mobile anode of setting（22）Relative to the processed drill bit as cathode body（8）Moving up and down maximum single direction stroke is 5cm；Using at the uniform velocity or simple harmonic motion move mode, average speed control in 1-20mm/s；Electrodeposition time is 1-3 hours； In mechanical agitator（5）Stirring auxiliary under obtain nano-composite plate；
    5. electro-deposition finishes, by post processing, the drill bit with nano-composite plate of required performance requirement is obtained.
CN201610587719.9A 2014-08-20 2014-08-20 Overcritical composite plating processing drill method based on mobile anode Active CN106222729B (en)

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CN201410412652.6A CN104141161B (en) 2014-08-20 2014-08-20 The method of overcritical composite plating processing drill based on mobile anode
CN201610587719.9A CN106222729B (en) 2014-08-20 2014-08-20 Overcritical composite plating processing drill method based on mobile anode

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CN106222729A CN106222729A (en) 2016-12-14
CN106222729B true CN106222729B (en) 2018-02-06

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