CN109226917A - Method for coarsening surface based on electro-discharge machining - Google Patents
Method for coarsening surface based on electro-discharge machining Download PDFInfo
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- CN109226917A CN109226917A CN201811031460.5A CN201811031460A CN109226917A CN 109226917 A CN109226917 A CN 109226917A CN 201811031460 A CN201811031460 A CN 201811031460A CN 109226917 A CN109226917 A CN 109226917A
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- electro
- discharge
- electrode
- discharge machining
- coarsening
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
- B23H9/008—Surface roughening or texturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/24—Features related to electrodes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Thermal Sciences (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
A kind of method for coarsening surface based on electro-discharge machining, have high energy utilization efficiency, material removal efficiency height, electrode shape customizable to realize the advantages such as sunk processing by arc discharge processing, it is realized using electric arc processes to the efficient small remaining materials ablation of coarse surface, small raised or sunken controlled surface shape characteristic is formed on surface, to realize roughing in surface effect.Compared with existing method for coarsening surface, the present invention has the characteristics that high efficiency, low cost and roughening geometrical characteristic are controllable, and it is at high cost and the deficiencies of be unable to control coarse surface character shape to compensate for present in existing method for coarsening surface roughening low efficiency, roughening.
Description
Technical field
The present invention relates to material surface roughening, especially a kind of method for coarsening surface based on electro-discharge machining.
Background technique
In bonding and cementing structure application, how improving adhesion strength and increasing the reliability of bonding is always a urgency
Problem to be solved.For example, current solid rocket motor nozzle mostly uses composite material diffuser and metal shell to be bonded
Structure type.It is solid propellant rocket that high-pressure gas, which causes jet pipe diffuser to be glued interfacial failure and fallen by stripping, when work
The most common failure of jet pipe gives the type product that solid propellant rocket is power and brings very big potential risk.In order to improve
Adhesion strength and increase bonded structure reliability, scholars study discovery to surface carry out roughening treatment so that surface shape
At small uneven, can increase considerably and be glued binding face area, thus greatly strengthen composite construction intensity and can
By property.Therefore, surface roughening treatment is also widely used for the bonding and the occasions such as splicing and composite material preparation of components.
Currently, realize that the process of metal surface roughening has very much, for example, it is traditional insertion pin, machine cut, sharp
The modes such as light texturing, laser cutting, electrical-chemistry method and electric spark texturing, and these methods all respectively have feature.Firstly, traditional
Insertion pin and the research of machine cut mode coarse surface in, Jilin University appoints dew spring et al. to improve the lubricious strip of piston
Part uses the method for vibration machining to process shallow hole as oil collecting hole on piston skirt surface, but this method can only be on surface
On process shallow hole or hole, micro-protuberance structure can not be processed, and mechanical coarsening surface is by the limit to coarse surface hardness
System and restriction.Secondly, when being roughened using laser surface, since laser has good room and time controlling, Yi Jiji
High energy density and power density, thus high rigidity, dystectic material surface roughening treatment may be implemented.However, laser
Coarse surface generate microcosmic pit size it is smaller, although the binding force of lining can be improved, can not be formed metal shell with
The structure of liner layer is interlocked, and strengthening effect is still undesirable.Finally, in the processing of electrical discharge machining coarse surface, Nanjing aviation
Yang Zhiwei of space flight university etc. processes array micro-protuberance structure using the method for Wire EDM on red copper electrode, then
Surface with array shallow hole structure is processed using the method for Electric Discharge Machining.But this method needs to prepare complexity
Electrode, processing efficiency is lower, and is not suitable for the processing with curved surface.In conclusion existing various roughing in surface
Technique all has some limitations, and the roughing in surface for how realizing high efficiency and controllable precise is directed to, and how to borrow
Help the special process process customization geometry protrusion, thus bonding interface introduce mechanical force strengthen composite construction intensity and
The process of reliability, at home and abroad related fields not yet has been reported that at present.
According to patent retrieval it is found that Japanese scholars Yokota Hiroshi discipline et al. elaborates a kind of substrate in patent CN107532272A
Method for coarsening surface, substrate surface treatment method, spraying overlay film be coated component and its manufacturing method, the patent and mainly propose
A kind of roughing in surface technique based on laser processing；The patent irradiates substrate surface by high power density laser, and thick
Change surface and form oxidation film, and add the effect of chemical affinity by physics closing force caused by coarse surface, obtain with
The high adhesion of the spraying overlay film formed on ceramic base material.Equally, Japanese scholars dye paddy peace letter et al. is in patent
A kind of surface roughening treatment method is proposed in CN106061627A, this patent describes on the layer on substrate or on substrate
Composition of the coating containing inorganic particulate and organic resin is dried and cured, and then is etched above the substrate,
The process for realizing the roughing in surface of substrate.Japanese scholars cross side member et al. and propose a kind of surface in patent CN102517617B
It is roughened the device and roughing in surface copper sheet method of copper sheet.The patent to the effect that passes through first using electrolysis mode in copper sheet two
Side generates copper particle, and copper particle is then fixed on copper sheet surface by plating mode, and it is 10 μm below that partial size, which is consequently formed,
Fine strumae, the roughness Rz value range after roughing in surface are 3 μm -20 μm.Zhang Bing et al. is in patent CN107747096A
In propose a kind of method of stainless steel surface roughening treatment.The patent mainly proposes a kind of table based on chemical surface corrosion
Face roughening process, and may be implemented to have the 1-40 μm of rough surface for arriving 10-400nm, so as to effectively improve stainless steel with
The adhesive force of surface attachments increases its bond strength.However, the patent of above-mentioned mentioned existing roughing in surface relates generally to
Be Microscale surface roughening, the microscopic protrusions or recess after roughing in surface are generally the ruler of micron even Nano grade
Degree, and the purpose of these method roughening treatments is to realize that microcosmic rough surface is uneven or increase surface roughness, is realized
Enhance surface chemistry affinity or surface adhesion force etc..But due to the achieved roughing in surface of above-mentioned existing patent
Microcosmic pit size is very small afterwards, increases bond area and in bonding interface introducing machinery for realizing by surface texture technology
The related content of power is not yet related to.
In addition, according to patent retrieval it is found that moral et al. is shaken on Japanese scholars richness ridge proposes use in patent CN106345928B
In the roughing in surface device and method for coarsening surface of raw metal.The patent proposes by with wedge angle protruding features
Mold compresses are extremely to coarse surface, to reach the mesh for realizing roughing in surface forming corresponding recess feature to coarse surface
's.Compared to the above-mentioned patented method referred to, the patent is by the size of control mold Sharp features, it can be achieved that surface characteristics shape
The biggish roughing in surface of looks, so that the surface after roughening increases bond area and introduces the purpose of mechanical force in bonding interface.
However, this method is by mold compresses by mechanical means to coarse surface, when being high rigidity, high-intensitive table to coarse surface
When face, very big difficulty will certainly be brought using this method, including die cost is high, roughening efficiency is lower and roughening effect is poor
Deng.In addition, roughing in surface process relies primarily on mold copy protection in the case where pressing active force in implementation process mentioned by the patent
The shape characteristic of mold will certainly be caused to coarse surface when coarse surface is complicated curved surface to the manufacture of mold
Greatly difficult and high cost, therefore this method is in high-intensitive and high hardness material and complex-curved roughing in surface
Existing significant limitation.
Summary of the invention
The purpose of the present invention is to provide a kind of method for coarsening surface based on electro-discharge machining, and this method is especially for height
Hardness and high-strength material and complex-shaped curved surface carry out non-Microscale surface roughening and have a clear superiority, and compensate for existing table
The deficiencies of roughing in surface scale is small present in the method for roughening of face, roughing in surface low efficiency and roughing in surface is at high cost.This hair
It is bright to have the characteristics that high efficiency, low cost and roughening geometrical characteristic are controllable.
Technical solution of the invention is as follows:
A kind of method for coarsening surface based on electro-discharge machining, it is characterized in that this method includes the following steps:
1) need the surface appearance feature processed processing that there is individual features shape or selection to have according to coarse surface
The electrode special of individual features shape；
2) electrode special is set on to coarse surface, makes the electrode special and described to coarse surface
Between keep certain discharging gap, and work is set by way of outer fliud flushing, interior fliud flushing or immersion in the discharging gap
Medium；
3) cathode of discharge power supply (or anode) is connected with the electrode special, by described to coarse surface and institute
The discharge power supply positive (or cathode) stated is connected；
4) discharge power supply is opened, the discharge power supply passes through electrode special, working media, to coarse surface shape
At electro-discharge machining, small raised or sunken controllable surface appearance feature is being formed to coarse surface, is realizing table to be roughened
The roughening in face.
The electro-discharge machining includes arc discharge processing, electrical discharge machining or electrochemical discharge processing method.
The controllable surface appearance feature includes: that needle-shaped, cylinder, circular cone, round table-like or polyhedron are raised, or circle
Cone, spherical, cylindrical cross-section pit.
The electrode special is ruled surface shaped electrode, curve generating electrode, bundling electrode and circle rolling electrode.
The working media is water base electrolyte, oil base electrolyte, gas or mist medium.
The discharge power supply refers to that discharge current is that 1A-5000A is adjustable, and pulsewidth length is that 0.1 μ s-100ms is adjustable, arteries and veins
Between width be the adjustable pulse power of 0.1 μ s-100ms or DC power supply.
The beneficial effects of the present invention are:
1, the present invention has energy utilization efficiency height, material removal efficiency height etc. excellent by means of electro-discharge machining (electric arc processes)
Gesture, it can be achieved that efficiently, the roughing in surface of low cost, compensate for present in existing method for coarsening surface roughening low efficiency and roughening
The deficiencies of at high cost；
2, the present invention has the characteristics that electrode shape is customizable to realize that sunk is processed using electric arc processes, coarse surface
The customized coarsening process of geometrical characteristic, improves and is unable to control coarse surface character shape and ruler in existing method for coarsening surface
The problems such as very little；
3, the method for roughening mentioned by the present invention is composite material and composite junction by processing the geometry body characteristics of customization
The application such as bonding of structure, which provides, to be increased bond area and introduces the measures such as Mechanical Contact, to effectively avoid adhesive material
From falling off for matrix；
4, the present invention implements roughing in surface using discharge-treating method, it is not by the hardness of material, intensity and mechanical property
It influences, is particularly suitable for the difficult-to-machine material roughing in surface of aerospace field；
5, the present invention is by using various types of electrode specials and corresponding feeding mode, it can be achieved that complex-curved height
Imitate roughing in surface.
Detailed description of the invention
Fig. 1 is that the present invention is based on the schematic diagrames of method for coarsening surface one embodiment of electro-discharge machining
In figure: 1- electrode special, 2- working media, 3- coarse surface and its shape characteristic, 4- waits for coarse surface, puts
Power supply 5.
Fig. 2 is various electrode special schematic diagrames
In figure: 6- ruled surface shaped electrode, 7- curve generating electrode, 8- bundling electrode, 9- circle rolling electrode.
Fig. 3 is that the present invention is based on the roughening results of the method for coarsening surface embodiment of electro-discharge machining
In figure: 10- is roughened part model figure, 11- coarse surface pictorial diagram.
Specific embodiment
In conjunction with illustrating that attached drawing 1 and Fig. 2 be described further technical solution of the present invention, specific embodiment and behaviour are given
Make process, but protection scope of the present invention is not limited only to following embodiments.
As shown in FIG. 1, FIG. 1 is the present invention is based on the schematic diagram of method for coarsening surface one embodiment of electro-discharge machining, sheets
Invention is referred to based on the method for coarsening surface of electro-discharge machining using discharge-treating method, by with the use of electrode special 1, work
Medium 2 and discharge power supply 5 treat the discharge material ablation that coarse surface 4 carries out small surplus, surface formed small protrusion or
The controllable surface appearance feature 3 of recess, to realize roughing in surface effect.
The present invention is based on the method for coarsening surface of electro-discharge machining, including the following steps:
1) individual features shape or selection tool are had according to the processing of surface appearance feature 3 for needing to process to coarse surface 4
There is the electrode special 1 of individual features shape；
2) electrode special 1 is set on to coarse surface 4, makes the electrode special 1 with described wait be roughened
Certain discharging gap is kept between surface 4, and introduces work by way of outer fliud flushing, interior fliud flushing or immersion in the discharging gap
Make medium 2；
3) cathode of discharge power supply 5 (or anode) is connected with the electrode special 1, by described to coarse surface 4
It is connected with the discharge power supply 5 positive (or cathode)；
4) discharge power supply 5 is opened, the discharge power supply 5 passes through electrode special 1, working media 2, table to be roughened
Face 4 forms discharge loop and realizes electro-discharge machining, and small raised or sunken controllable surface topography is being formed to coarse surface 4
Feature 3 realizes the roughening to coarse surface.
The load of discharge power supply 5 is put in electrode 1 and the medium 2 in the voltage breakdown gap to 4 both ends of coarse surface, formation
Electro-plasma and then heat etching remove the material to coarse surface 4, form controlled surface shape characteristic 3 on surface to be roughened, complete
At surface roughening treatment.
The electro-discharge machining includes arc discharge processing, electrical discharge machining or electrochemical discharge processing method.
The controllable surface appearance feature includes: that needle-shaped, cylinder, circular cone, round table-like or polyhedron are raised, or circle
Cone, spherical, cylindrical cross-section pit.
The electrode special 16 is ruled surface shaped electrode, 7 is curve generating electrode, 8 is collection as shown in Fig. 2, in figure
Beam electrode and 9 is circle rolling electrode.
The working media is water base electrolyte, oil base electrolyte, gas or mist medium.
The discharge power supply refers to that discharge current is that 1A-5000A is adjustable, and pulsewidth length is that 0.1 μ s-100ms is adjustable, arteries and veins
Between width be the adjustable pulse power of 0.1 μ s-100ms or DC power supply.
The present invention makes by using various forms of electrode specials (1) and cooperation for of different shapes to coarse surface
With various forms of feeding modes, it can be achieved that including ruled surface and complex-curved roughing in surface；Various forms of electrode specials
It is fed with the multiaxis sunk for the use of various forms of feeding modes including shaped electrode, the multiaxis sunk of bundling electrode
Feeding, circle rolling electrode roller press type feeding etc..
Implementation process of the present invention is as follows: in the method for coarsening surface based on electro-discharge machining is implemented, electrode special 1 and to thick
Change 4 workpiece of surface to connect with the positive grade of power source special 5, cathode respectively, by power source special 5, discharge medium 2, to coarse surface 4
Discharge loop needed for forming electro-discharge machining between power source special 5 four；Load is in electrode special 1 and to 4 liang of coarse surface
The discharge voltage at end punctures working media, forms the material that high-temperature plasma ablation waits for coarse surface, processes specific table
Face geometrical morphology feature 3 realizes controllable customized surface roughening.In the process, the working solution of liquid or immersion liquid formula
Electro-discharge machining region can be effectively cooled down, electric discharge removal particle and product are taken away, prevents coarse surface from being burnt.
Embodiment
The course of work that the exemplar of the invention in completion figure is roughened is illustrated in conjunction with explanatory diagram 3: in exemplar as shown in Figure 3
In roughing in surface implementation process, first the surface topography being roughened is needed to process corresponding roughening electrode special 1 according to exemplar, it will be special
It is mounted on electrode 1 on the main shaft of electric arc processes lathe, workpiece 4 to be roughened is mounted on platen, and by Special electric
Pole 1 is connect with the cathode of power source special 5, and workpiece 4 to be roughened is connect with the anode of power source special 5；Mobile machine tool main shaft and work
Make platform, make electrode special 1 and to keep gap appropriate between coarse surface 4, implements Water-based working liquid for electrical between discharging gap
Fliud flushing, then voltage and current is applied between discharging gap by discharge power supply 5, make electrode 1 and to form height between coarse surface 4
Isothermal plasma so that heat etching removes the material to coarse surface, then cooperates the multiaxis feed motion of lathe, adds to coarse surface
Work goes out specific surface geometry shape characteristic, realizes controllable customized surface roughening.Fig. 3 is that the present invention is based on the tables of electro-discharge machining
The roughening of face method of roughening embodiment is as a result, in figure: 10 being roughening part model figure, 11 is coarse surface pictorial diagram.
Experiment shows there is that high efficiency, the inexpensive geometrical characteristic of roughening well are controllable to roughing in surface.
Claims (6)
1. a kind of method for coarsening surface based on electro-discharge machining, it is characterised in that this method includes the following steps:
1) individual features shape or selection tool are had according to surface appearance feature (3) processing for needing to process to coarse surface (4)
There is the electrode special (1) of individual features shape；
2) electrode special (1) is set on to coarse surface (4), makes the electrode special (1) with described to thick
Change and keep certain discharging gap between surface (4), and is drawn by way of outer fliud flushing, interior fliud flushing or immersion in the discharging gap
Enter working media (2)；
3) cathode of discharge power supply (5) or anode are connected with the electrode special (1), by described to coarse surface (4)
It is connected with described discharge power supply (5) positive or negative pole；
4) open the discharge power supply (5), the discharge power supply (5) by electrode special (1), working media (2), to thick
Change surface (4) and form electro-discharge machining, is forming small raised or sunken controllable surface appearance feature to coarse surface (4)
(3), the roughening to coarse surface is realized.
2. the method for coarsening surface according to claim 1 based on electro-discharge machining, it is characterised in that the electro-discharge machining
Including arc discharge processing, electrical discharge machining or electrochemical discharge processing method.
3. the method for coarsening surface according to claim 1 based on electro-discharge machining, it is characterised in that the controllable table
Face shape characteristic (3) includes: that needle-shaped, cylinder, circular cone, round table-like or polyhedron be raised or circular cone, spherical shape, cylindrical cross-section
Pit.
4. the method for coarsening surface according to claim 1 based on electro-discharge machining, it is characterised in that the electrode special
It (1) is ruled surface shaped electrode (6), curve generating electrode (7), bundling electrode (8) and circle roll electrode (9).
5. the method for coarsening surface according to claim 1 based on electro-discharge machining, it is characterised in that the working media
For water base electrolyte, oil base electrolyte, gas or mist medium.
6. the method for coarsening surface according to any one of claims 1 to 5 based on electro-discharge machining, it is characterised in that described
Discharge power supply (5) refers to that discharge current is that 1A-5000A is adjustable, and pulsewidth length is that 0.1 μ s-100ms is adjustable, and width is 0.1 between arteries and veins
The adjustable pulse power of μ s-100ms or DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811031460.5A CN109226917B (en) | 2018-09-05 | 2018-09-05 | Surface roughening method based on electric discharge machining |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811031460.5A CN109226917B (en) | 2018-09-05 | 2018-09-05 | Surface roughening method based on electric discharge machining |
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| Publication Number | Publication Date |
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| CN109226917A true CN109226917A (en) | 2019-01-18 |
| CN109226917B CN109226917B (en) | 2021-03-23 |
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| CN201811031460.5A Active CN109226917B (en) | 2018-09-05 | 2018-09-05 | Surface roughening method based on electric discharge machining |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116021100A (en) * | 2023-03-23 | 2023-04-28 | 成都宝利根创科电子有限公司 | Machining method for machining precision small boss type molded parts by electric spark |
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| CN102773572A (en) * | 2012-02-07 | 2012-11-14 | 上海交通大学 | Overlaid plate type internal solution filling forming electrode for high-speed electric discharge machining |
| CN104772540A (en) * | 2015-04-29 | 2015-07-15 | 常州工学院 | Electrochemical machining method for copper-aluminum composite electrode surface texturing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1598138A1 (en) * | 2004-05-21 | 2005-11-23 | Fuji Photo Film Co., Ltd. | Method for providing surface texturing of aluminium sheet, substrate for lithographic plate and lithographic plate |
| CN102773572A (en) * | 2012-02-07 | 2012-11-14 | 上海交通大学 | Overlaid plate type internal solution filling forming electrode for high-speed electric discharge machining |
| CN207052938U (en) * | 2014-09-02 | 2018-02-27 | 夏普株式会社 | Electric discharge device |
| CN104772540A (en) * | 2015-04-29 | 2015-07-15 | 常州工学院 | Electrochemical machining method for copper-aluminum composite electrode surface texturing |
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