CN110359065A - A kind of jet stream electro-deposition spray head and its method for manufacturing seamless metal pipe - Google Patents
A kind of jet stream electro-deposition spray head and its method for manufacturing seamless metal pipe Download PDFInfo
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- CN110359065A CN110359065A CN201910761689.2A CN201910761689A CN110359065A CN 110359065 A CN110359065 A CN 110359065A CN 201910761689 A CN201910761689 A CN 201910761689A CN 110359065 A CN110359065 A CN 110359065A
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- electro
- mold core
- electrical isolation
- deposition
- nozzle
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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
- C25D1/00—Electroforming
- C25D1/02—Tubes; Rings; Hollow bodies
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D1/00—Electroforming
- C25D1/20—Separation of the formed objects from the electrodes with no destruction of said electrodes
Abstract
The invention patent discloses a kind of jet stream electro-deposition spray head and its method for manufacturing seamless metal pipe, jet stream electro-deposition spray head mainly includes the nozzle body equipped with nozzle, conductive anode, be electrically insulated mold core, electrolyte, electro-deposition power supply and cathode substrate, electrical isolation mold core and nozzle are coaxially installed in nozzle body, and nozzle is stretched out in the mold core one end that is electrically insulated.When work, first by the extension end of the electrical isolation mold core of jet stream electro-deposition spray head and cathode substrate intimate surface contact；Electrolyte is connected into nozzle body again, gap high speed is formed by from electrical isolation mold core and nozzle and flows out, forms the hollow liquid stream column of fully wrapped around electrical isolation mold core to cathode substrate；Then electro-deposition power supply connects conductive anode and cathode substrate electrification, and under flow field and electric field comprehensive function, reduction reaction occurs for special metal ion in hollow liquid stream column, is successively superimposed and is grown up to form hollow electrodeposit metals pipe around electrical isolation core surface；Numerical control motion platform makees precise space movement by desired trajectory control jet stream electro-deposition spray head and cathode substrate, continues the seamless electrodeposit metals pipe that space structure is provided in electro-deposition in the hollow liquid stream column of stable state.
Description
Technical field
The invention belongs to electrical-chemistry method technical fields, and in particular to a kind of jet stream electro-deposition spray head and prepare nothing based on it
The method for stitching metal tube.
Background technique
Seamless fine metal pipe is manufacturing basic part, and in modern consumer electronics, chip is biological, and the fields such as medical treatment are equal
It is widely used.Currently, seamless metal pipe conventional fabrication process is drawing, rolling etc., but these techniques can only mostly obtain
The straight tube of the wall thickness such as diameter, and restricted by molding die and movement mechanism etc., it is extremely difficult to it produces extra small internal diameter or becomes internal diameter or change
The seamless metal pipe of cross sectional shape.And these unconventional seamless metal pipes have urgent need in industry.
Electro-deposition processing (eletroforming) be it is a kind of produced using electrochemical principle by accurate copy mode part, tie
The common processing method of structure, profile (membrane material, wire rod etc.).Therefore it is also selected to prepare seamless metal micro-pipe.Such as the patent No.
Correspond to application number 200480042540.0 for WO2005/090645() patent propose a kind of micro electroforming method to prepare metal micro-
The technique of tubule.It obtains seamless metal microcapillary in such a way that electro-deposition replicates elongated core material, but this based on slot plating
The deficiencies of that there are preparation efficiencies is relatively low for the science electrodeposition technology of mode, process procedure is more, demoulding difficulty is big, bad adaptability,
It is especially extremely difficult to be competent at extra small internal diameter or becomes the preparation work of the seamless metal pipes such as internal diameter or variable cross-section shape.Jet stream electro-deposition adds
Work is a kind of special processing technology with high flexible operation degree, forms the changeable threadiness of spatial form easily freely, at high speed
Structural body.Based on this, the present invention develops a kind of jet stream electro-deposition spray head and jet stream electro-deposition seamless metal pipe new process, with energy
Prepare to high efficient and flexible the unrestricted seamless metal pipe such as internal diameter, cross-sectional shape, spatial geometric shape.
Summary of the invention
It is an object of that present invention to provide a kind of jet stream electro-deposition spray head and the methods for preparing seamless metal pipe based on it, with reality
Now efficiently prepare unconventional fine seamless metal pipe.
In order to achieve the above objectives, the technical scheme is that a kind of jet stream electro-deposition spray head, the spray including being equipped with nozzle
Head main body, conductive anode, electrolyte, electro-deposition power supply and cathode substrate, it is characterised in that: it further includes electrical isolation mold core；Institute
The electrical isolation mold core and nozzle stated coaxially are installed in nozzle body；Electrical isolation mold core one end stretching nozzle 1 ~
5mm；The electrolyte is formed by gap high speed from electrical isolation mold core and nozzle and flows out；The conductive anode is in planar rings
Shape, the fixed inlet for being installed in nozzle.
Preferably, electrical isolation mold core is mounted on the adjustable supporter of nozzle body, is coaxially fixed afterwards with nozzle；It is preferred that
, the conductive anode outer diameter of flat annular is twice or more of internal diameter, increases the interfacial contact of anode and electrolyte
Area reduces anodic current density.
The material of the electrical isolation mold core is the polymeric solid material of acid-alkali-corrosive-resisting, and extension end is plane, high
Molecular solid materials are preferably the polypropylene with excellent toughness.
The material of the conductive anode is that inert metals, the preferred materials such as platinum, titanium are the platinum for being not susceptible to anodic passivity.
The conductive anode is connected with the anode of electro-deposition power supply, and the cathode substrate is negative with electro-deposition power supply
Pole is connected.
A kind of method that jet stream electro-deposition spray head is used to manufacture seamless metal pipe comprising the steps of:
S1, electrolytic bath is placed on the X/Y plane of numerical control motion platform, then cathode substrate is horizontally fixed on electrolytic bath
It is interior, then adjustment be fixed on the nozzle of the nozzle body on the Z axis of numerical control motion platform between cathode substrate at a distance from for 1 ~
5mm, and it is in close contact the extension end of electrical isolation mold core and cathode substrate；
S2, connect electrolyte circulation system, make electrolyte flow through electrical isolation mold core and nozzle be formed by gap after flow at a high speed
Cathode substrate, at this point, electrical isolation core surface form package electrical isolation mold core and both ends be separately connected nozzle and cathode base
The stable hollow liquid stream column at bottom；
S3, conductive anode and cathode substrate are connected with electro-deposition power supply respectively and charged, at this point, in the common work of electric field and flow field
Under, the special metal ion in hollow liquid stream column is reduced into after atom from cathode substrate around electrical isolation core surface
Successively superposition is grown up to form hollow electrodeposit metals pipe, and at the same time, nozzle body and cathode substrate are transported in numerical control
Make precise space movement under the multiaxis driving and control of moving platform, and the extension end for remaining electrically isolated from mold core is located at electrodeposit metals
1 ~ 2mm in managing, and the form stable of hollow liquid stream column；
S4, after the height or length and geometry of electrodeposit metals pipe reach design requirement, turn off electro-deposition power supply and electricity
Liquid is solved, jet stream electro-deposition spray head is removed, electrodeposit metals pipe is separated with cathode substrate, completes to process, is formed final seamless
Metal tube.
Preferably, in the step S1, the preferred distance between the nozzle and cathode substrate of nozzle body is 2 ~ 3mm, phase
The electrical isolation core model 2 ~ 3mm of isometric stretching nozzle and cathode substrate answered is in close contact, this state is conducive to electrolyte from electrical isolation
Mold core and nozzle gap high speed outflow form stable hollow liquid stream column.
Preferably, in the step S3, nozzle body and cathode substrate drive and control in the multiaxis of numerical control motion platform
Make precise space movement under system, this spatial movement be the molding structure based on seamless metal pipe and it is preset include spray head master
Moved horizontally in the plane of the rotary motion of body, elevating movement and cathode substrate, and preferentially using Computerized digital control system into
The driving of row multiaxis and control.
It is as follows based on the working principle of the invention and implementation process:
The present invention is based on jet stream electro-deposition techniques, and electrochemical reducting reaction is limited to the hollow liquid stream column effect of stable form
Cathode substrate surface, and built-in flexible type core of the electrical isolation mold core as seamless metal pipe in the showerhead, make the gold of electro-deposition
Belong to layer around electrical isolation core surface be successively superimposed, and at spray outlet the hollow liquid stream column of dynamic stability induction electro-deposition
Under effect, the seamless metal pipe of space threadiness is formed.It is unrestricted to prepare internal diameter, cross-sectional shape, spatial geometric shape etc.
On the one hand seamless metal pipe designs different essences using the electrical isolation mold core of fine nonuniform section by changing nozzle diameter
The modes such as close spatial movement are shaped with the seamless metal pipe for meeting different profiles and structure；On the other hand, it fits in process
When adjustment electrolyte flow rate, the process parameter such as hollow liquid stream column length or direction, EDM parameter, the hollow liquid of Dynamic Matching
Fluidization tower diameter, electrodepositing speed and deposition structural form, to realize the jet stream electro-deposition molding of unconventional seamless metal pipe.
Compared with the prior art, the invention has the following beneficial effects:
1, flexible manufacturing ability is strong.The technique (rolling, drawing molding etc.) of conventional production seamless metal pipe is by mold and molding
The restriction of movement, it is difficult to prepare the fine seamless metal pipe of extra small internal diameter or non-equal wall thickness or variable cross-section shape.And it is plated based on slot
The science electrodeposition technology of mode is only capable of the electro-deposition preparation linear seamless metal pipe of equal diameter using elongated wire rod as core, and
Current density, the technique adjustment space of deposition rate are limited when processing, and free manufacturing capacity is greatly restricted.Using the present invention
When carrying out jet stream electro-deposition seamless metal pipe, either adjustment process technological parameter, or replacement different spray nozzles and section
The jet stream electro-deposition spray head of shape, operation is all very simple and efficient, can prepare different types of seamless gold without special process
Belong to pipe.In addition, the precise space of combining with digital control motion platform moves, lured using the hollow liquid stream column of nozzle exit dynamic stability
Conductive deposits metal tube continues around electrical isolation mold core and increases, and can prepare such as spatially spiral cable architecture or bend the seamless of distortion
Metal tube just completes the seamless metal pipe precise forming of special space structure without other techniques (such as mechanical deflection).Therefore,
The unrestricted seamless metal pipe such as internal diameter, cross-sectional shape, spatial geometric shape is prepared using the present invention with having freedom and flexibility
Excellent manufacturing capacity.
2, without demoulding.The preparation method of seamless metal pipe is formed in the electro-deposition of elongated core material outer surface, and if only if gold
It can just be demoulded after belonging to thickness of pipe wall sizing.Due to elongated core material and electrodeposit metals pipe is full-scale is firmly combined and deposited Au
It is meagre to belong to thickness of pipe wall, it is difficult to use mechanical stripping, complicated physically or chemically postprocessing working procedures, which are usually taken, effectively to be demoulded.
The present invention using elasticity and good-toughness electrical isolation mold core as type core, in process only a bit of electrical isolation mold core be placed in it is hollow
Electrodeposit metals pipe in, and with jet stream electro-deposition spray head movement always be in state of self-adapting adjustment, therefore be electrically insulated mold core
Without tight binding ability between hollow inner wall of metal tube.After completion of processing, electrical isolation can be separated by removing jet stream electro-deposition spray head
Mold core and seamless metal pipe.
3, production cost is low.When preparing seamless metal pipe using electro-deposition spray head of the invention and method, it is not necessarily to special essence
Close frock clamp, technological preparation can take procedure auto-control, and the time is short and easy to operate.Furthermore jet stream electrodepositing speed is significant
Higher than general tank liquor electrodepositing speed, product quality and surface quality are preferable, and it is primary that programmable accurately controls seamless metal pipe
Molding is conducive to shorten process time without special aftertreatment technology.For this purpose, the present invention, which prepares seamless metal pipe, to be saved
Dedicated technological equipment is saved, and production process has both electrodeposition rate fastly and digitizes the features such as manipulating, formed precision is reliable
And process costs are low, are easy to implement efficient production.
Detailed description of the invention
Jet stream electro-deposition spray head schematic diagram when Fig. 1 is electroless liquid of the invention.
Fig. 2 is the operation schematic diagram that jet stream electro-deposition spray head of the present invention prepares space structure seamless metal pipe.
Fig. 3 is the seamless metal pipe of the space structure of jet stream electro-deposition spray head preparation of the present invention.
Figure label and title: 1, electrolyte；2, nozzle body；3, be electrically insulated mold core；4, nozzle；5, hollow liquid stream column；
6, electrodeposit metals pipe；7, cathode substrate；8, electrolytic bath；9, electro-deposition power supply；10, conductive anode；11, support frame；12, number
Control motion platform；13, seamless metal pipe.
Specific embodiment
Present invention will be further explained with reference to the attached drawings and specific examples.
Jet stream electro-deposition spray head of the present invention, nozzle body 2 are made of organic glass (PMMA), nozzle body 2
It is equipped with the nozzle 4 of the diameter 1mm of connection electrolyte 1, installs poly- the third of diameter 0.3mm on the support frame 11 inside nozzle body
Alkene pole is used as electrical isolation mold core 3, and the regulating mechanism on support frame can make be electrically insulated mold core 3 and 4 central coaxial of nozzle, and electricity is exhausted
The stretching transverse plane of edge mold core 3 exceeds jet expansion 3mm.The cyclic annular platinized platinum that outer diameter is 3mm internal diameter 1mm is same as conductive anode 10
Axis it is fixed on the inlet of nozzle 4.Cathode substrate 7 is the rectangular latten(-tin) of thickness 1mm, is placed on electrolysis with 4 face of nozzle
In liquid bath 8.9 anode of electro-deposition power supply connects cyclic annular platinized platinum, and cathode connects rectangular latten(-tin).Electrolyte 1 is containing nickel sulfamic acid
The electrolyte solution of (350g/L), nickel chloride (10g/L), boric acid (40g/L).Filtration and electrolysis unit was combined using magnetic drive pump and filter
Liquid makes electrolyte cycle operation to jet stream electro-deposition spray head feed flow.
The implementation method for preparing seamless metal pipe using jet stream electro-deposition spray head of the present invention is as follows:
Electrolytic bath 8 and horizontal fixed cathode substrate 7 are installed on the X/Y plane of numerical control motion platform 12, pacified vertically on Z axis
Jet stream electro-deposition spray head is set, adjusting height of the nozzle 4 in nozzle body 2 apart from cathode substrate 7 is 3mm, and is remained electrically isolated from
The stretching transverse plane and 7 intimate surface contact of cathode substrate (Fig. 1) of mold core 3.Later on electrolyte circulation system, certain pressure
Electrolyte 1 enter jet stream electro-deposition spray head, from electrical isolation mold core 3 and nozzle 4 annular gap spray to be formed package electrical isolation
The hollow liquid stream column 5 of mold core 3 is to cathode substrate 7.Electrolyte collects along cathode substrate diffusion into the surface at very thin liquid film, and finally
It is recycled in electrolytic bath 8.
9 anode of electro-deposition power supply connects the conductive anode 10 inside jet stream electro-deposition spray head, and cathode connects cathode substrate 7,
After opening electro-deposition power supply, electric field is generated in the hollow liquid stream column 5 between conductive anode 10 and cathode substrate 7, makes cathode substrate table
Electrochemical reducting reaction occurs for the nickel ion in face, and the layer-by-layer superposition from the formation of cathode substrate 7 around electrical isolation mold core 3 is grown up
Electrodeposit metals pipe 6.Meanwhile swiftly flowing hollow liquid stream column 5 limits nickel deposition in a certain range.Work as electro-deposition
When metal height reaches 1.5mm ~ 2mm, nozzle body 2 is according to the slow hoisting depth of preset program, at this point, electrical isolation mold core 3 is stretched
Though outlet is detached from cathode substrate, but still has the electrical isolation mold core extension end for being about 1 ~ 1.5mm to be in hollow deposited Au always
Belong in pipe.Electrodeposit metals pipe constantly deposits growth with the slow lifting motion of nozzle body 2, and forming height is more than 4mm's
Vertical threadiness seamless metal pipe.Hereafter, under the control of desired guiding trajectory, the nozzle body 2 on numerical control motion platform 12 is along up time
Needle direction slowly rotates, while cathode substrate 7 does matching campaign along the direction XY.In this way, jet stream electro-deposition spray head and deposited Au
Change orientation with belonging to the dynamic stability for not only maintaining hollow liquid stream column 5 between pipe 6, and induces electrodeposit metals always along hollow
The direction of liquid stream column 5 constantly increases.Under the Multi-axis motion control of numerical control motion platform 12, form it is consistent with desired trajectory,
The electrodeposit metals pipe 6 of space bending.After electrodeposit metals length of tube and geometry reach design requirement, it is heavy to turn off electricity
Product power supply and electrolyte, remove jet stream electro-deposition spray head, electrodeposit metals pipe are separated with cathode substrate, complete processing, are formed
Final seamless metal pipe 13.
The embodiment that protection scope of the present invention is not limited to foregoing description.Without departing substantially from substantive content of the invention
In the case of, any conspicuous improvement, replacement or the variation that those skilled in the art can make belong to guarantor of the invention
Protect range.
Claims (6)
1. a kind of jet stream electro-deposition spray head, the nozzle body (2) including being equipped with nozzle (4), conductive anode (10), electrolyte (1),
Electro-deposition power supply (9) and cathode substrate (7), it is characterised in that: it further includes electrical isolation mold core (3)；The electrical isolation mold core
(3) it is coaxially installed on nozzle body (2) with nozzle (4)；Electrical isolation mold core (3) one end stretching nozzle (4) 1 ~
5mm；The electrolyte (1) is formed by gap high speed from electrical isolation mold core (3) and nozzle (4) and flows out；The conduction sun
Pole (10) is in flat annular, the fixed inlet for being installed in nozzle (4).
2. a kind of jet stream electro-deposition spray head according to claim 1, it is characterised in that: the electrical isolation mold core (3)
Material is the polymeric solid material of acid-alkali-corrosive-resisting, and extension end is plane.
3. a kind of jet stream electro-deposition spray head according to claim 1, it is characterised in that: the electrical isolation mold core (3)
Cross-sectional shape is round, flat or rectangular.
4. a kind of jet stream electro-deposition spray head according to claim 1, it is characterised in that: the material of the conductive anode (10)
Matter is the inert metals such as platinum, titanium.
5. a kind of jet stream electro-deposition spray head according to claim 1, it is characterised in that: the conductive anode (10) and electricity
The anode of deposition power supply (9) is connected, and the cathode substrate (7) is connected with the cathode of electro-deposition power supply (9).
6. a kind of method that jet stream electro-deposition spray head is used to manufacture seamless metal pipe, it is characterised in that: comprise the steps of:
S1, electrolytic bath (8) is placed on the X/Y plane of numerical control motion platform (12), then cathode substrate (7) is horizontally fixed
In the electrolytic bath (8), the nozzle (4) for the nozzle body (2) that then adjustment is fixed on the Z axis of numerical control motion platform (12) with
Distance between cathode substrate (7) is 1 ~ 5mm, and is in close contact the extension end of electrical isolation mold core (3) and cathode substrate (7)；
S2, electrolyte circulation system is connected, so that electrolyte (1) is flowed through electrical isolation mold core (3) and after nozzle (4) is formed by gap
High speed flows to cathode substrate (7), at this point, foring package electrical isolation mold core (3) and both ends difference on electrical isolation mold core (3) surface
Connect the stable hollow liquid stream column (5) of nozzle (4) and cathode substrate (7)；
S3, conductive anode (10) and cathode substrate (7) are connected with electro-deposition power supply (9) respectively and charged, at this point, in electric field and stream
Under the collective effect of field, the special metal ion in hollow liquid stream column (5) is reduced into after atom to be surround from cathode substrate (7)
Electrical isolation mold core (3) surface layer-by-layer superposition grow up to form hollow electrodeposit metals pipe (6), at the same time, spray head
Main body (4) and cathode substrate (7) make precise space movement under the multiaxis driving and control of numerical control motion platform (12), and keep
The extension end of electrical isolation mold core (3) is located at 1 ~ 2mm in electrodeposit metals pipe (6), and the form stable of hollow liquid stream column (5)；
S4, after the height or length and geometry of electrodeposit metals pipe (6) reach design requirement, turn off electro-deposition power supply
(9) and electrolyte (1), remove jet stream electro-deposition spray head, electrodeposit metals pipe (6) separated with cathode substrate (7), complete plus
Work forms final seamless metal pipe (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910761689.2A CN110359065B (en) | 2019-08-19 | 2019-08-19 | Jet electrodeposition nozzle and method for manufacturing seamless metal pipe by using same |
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|---|---|---|---|
| CN201910761689.2A CN110359065B (en) | 2019-08-19 | 2019-08-19 | Jet electrodeposition nozzle and method for manufacturing seamless metal pipe by using same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112605398A (en) * | 2020-10-20 | 2021-04-06 | 南京航空航天大学 | Electrolysis-electrodeposition processing device and method for repairing SLM (Selective laser melting) formed part |
| CN112981471A (en) * | 2021-02-08 | 2021-06-18 | 广东工业大学 | High-localization three-dimensional electrodeposition device and method |
| CN113621997A (en) * | 2021-09-08 | 2021-11-09 | 河南理工大学 | Nozzle for electroforming metal structure with square cross section by liquid beam |
| CN114622252A (en) * | 2022-04-06 | 2022-06-14 | 河南理工大学 | High-precision jet electroforming nozzle and forming method thereof |
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| CN113621997A (en) * | 2021-09-08 | 2021-11-09 | 河南理工大学 | Nozzle for electroforming metal structure with square cross section by liquid beam |
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| CN114622252A (en) * | 2022-04-06 | 2022-06-14 | 河南理工大学 | High-precision jet electroforming nozzle and forming method thereof |
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