CN109317922A - A method of atomization cold plasma assisted machining - Google Patents
A method of atomization cold plasma assisted machining Download PDFInfo
- Publication number
- CN109317922A CN109317922A CN201710638290.6A CN201710638290A CN109317922A CN 109317922 A CN109317922 A CN 109317922A CN 201710638290 A CN201710638290 A CN 201710638290A CN 109317922 A CN109317922 A CN 109317922A
- Authority
- CN
- China
- Prior art keywords
- atomization
- cold
- plasma
- cooling
- generating device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/42—Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder, liquid
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mechanical Engineering (AREA)
- Plasma Technology (AREA)
Abstract
The present invention provides a kind of atomization cold plasma assisted machining methods, and the cooling and lubricating medium mixing jetting of the plasma jet and atomization that are generated under atmospheric pressure by cold plasma generator is to machining area.Atomization cooling and lubricating medium is easier to undergo phase transition than traditional coolant liquid, heat transfer efficiency is higher, plasma jet can quickly change material surface hydrophily again, and plasma containing liquid has higher hydrophilic modifying efficiency, atomization cooling and lubricating medium is set to easily enter cutting contact area, improve the cooling and lubricating characteristic of cutting region cutter and workpiece contact interface, cutting temperature is greatly reduced, reduce tool wear, reduce cutting temperature bring processing hardening and surface damage, to improve machined surface quality and surface integrity, increase cutter life.
Description
Technical field
The present invention relates to a kind of methods for being atomized cold-plasma jet assisted machining, belong to Cutting Process technical field.
Background technique
In metal or nonmetallic materials cutting process, since airbond layer, vapor film hinder between workpiece and cutter, and it is newborn
The hydrophobicity on surface, so that cooling medium cutting zone more difficult to get access, causes cooling medium cooling and lubricating effect limited, especially
The difficult-to-machine materials such as machining titanium alloy, nickel base superalloy, pure iron can generate a large amount of cutting heats, influence machining surface integrity.
Therefore it as can cooling medium is entered cutting contact zone deep by specific process, then is expected to improve the cooling profit of cooling medium
Sliding effect, improves machining surface integrity.
The patent of Publication No. CN103789716B proposes that bare electrode discharge plasma jet stream can be quickly to the surface of solids
It carries out efficient hydrophilically modified, and surface texture will not be changed.Such as during the cutting process, while cooling medium is perfused,
Cutting region is modified in real time using plasma, then can quickly improve the hydrophily of cutting interface cutter, workpiece surface, make
Cooling medium easily enters cutting region deep, cuts contact zone temperature to reduce.
The patent of Publication No. CN102059350A generates plasma jet by corona discharge or glow discharge and carries out
Assisted machining, the active particle for including in plasma jet can reduce the plastic deformation resistance of workpiece surface, reduce friction system
Number, can be effectively reduced cutting force, slow down tool wear, and be not necessarily to coolant liquid.But the macro-temperature of such plasma jet is still
For room temperature or it is higher than room temperature, still difficulty reaches traditional coolant liquid pouring type cooling and lubricating effect achieved.It is especially ground, mills
Cut the more severe cutting way of equal cooling and lubricatings environment, since the contact area between cutter and workpiece is larger, cutting speed
Higher, cutting contact zone heat is difficult externally to conduct under the operating condition not by coolant liquid, is easy to happen the excessively high institute of cutting temperature
A series of problems of generation.Therefore, CN102059350A the method is used only and carries out cooling and lubricating difficulty realization ideal effect, easily
Lead to burned work-surface.
Compared with traditional oils coolant liquid, atomization cooling medium be easier to undergo phase transition, heat transfer efficiency is higher, and to environment without
Pollution.It is mixed into cold plasma generating device in addition, will such as be atomized cooling medium, hydroxyl in cold-plasma jet can be improved
The strong oxidizing properties active particle concentration such as base, oxygen atom improves jet stream and imitates to the regulation of cutting zone cooling and lubricating characteristic, wetability
Rate.
Therefore, atomization cooling medium is such as introduced during cold-plasma jet assisted machining, then cold plasma is penetrated
For stream while quick regulation cutting contact zone water-wet behavior, induction atomization cooling medium enters cutting contact zone deep, can be real
Now preferable cooling and lubricating effect, especially for turning, grinding, milling of difficult-to-machine material etc. cutting in realize high-efficiency low-damage
It processes significant.
Summary of the invention
The invention proposes a kind of methods for being atomized cold plasma assisted machining, utilize atmosphere cold plasma jet stream
Cooling and lubricating medium with atomization can make full use of plasma jet to material table as cutting combination cooling lubricant medium
The wetability modified effect in face, and atomization cooling and lubricating medium relatively strong convection heat-transfer capability, cutting temperature is greatly reduced, subtracts
Few tool wear, reduces cutting temperature bring processing hardening and surface damage, to improve machined surface quality and surface
Integrality increases cutter life.
Technical solution of the present invention:
A method of atomization cold plasma assisted machining, using the cooling of atmosphere cold plasma jet stream and atomization
Lubricant medium mixed support machining；Assisted machining process equipment includes cold-plasma jet generating device and atomization cooling
Medium generating device；Cold-plasma jet generating device include high voltage power supply, work gas source, pressure reducing valve, flowmeter and wait from
Daughter electrode；Atomization cooling medium generating device includes air passage one-way valve, the cooling and lubricating medium introducing conduit of atomization and atomization
Cooling medium generating device；
The high-voltage output end of high voltage power supply in cold-plasma jet generating device, low-voltage output respectively with plasma
Body electrode is connected；Work gas source accesses plasma electrode after pressure reducing valve and flowmeter adjust separately pressure and flow；Deng from
Uniform cold-plasma jet is ejected at the nozzle of daughter electrode；
The cooling and lubricating medium of atomization introduces tube at one end and accesses plasma electrode, and the other end is atomized cooling medium
Device；Atomization cooling medium generating device is opened, cooling medium is atomized by conduit and is delivered to plasma electrode；Finally, it is mixed into
The plasma jet of the cooling and lubricating medium of atomization projects at plasma electrode nozzle；Since the cooling and lubricating of atomization is situated between
The cooling effect of matter is mixed into the plasma jet temperature of the cooling and lubricating medium of atomization significantly lower than room temperature.
Adjustment is mixed into the position and direction of the cold plasma generating device of the cooling and lubricating medium of atomization, makes machining area
It is immersed in the jet stream for the cooling and lubricating medium for being mixed into atomization；It is processed at this point, starting lathe, in process, needs to protect
Card machining area is immersed in always in the jet stream for the cooling and lubricating medium for being mixed into atomization.
The discharge type of cold-plasma jet generating device is that bare electrode electric discharge, dielectric barrier discharge, hollow cathode are put
The form of any one plasma generator such as electricity；
The work gas source of cold-plasma jet generating device can be high-purity nitrogen, argon gas, helium, chlorine, oxygen,
The mixed gas of the air or the above gas that are filtered and dried；
The discharge power supply of cold-plasma jet generating device can be DC high-voltage power supply, low-frequency high-voltage power supply, radio frequency
Any one such as high voltage power supply, microwave high pressure power supply or pulsed high voltage generator can produce the high voltage power supply of plasma.
The atomization method of atomization cooling medium generating device can be pressure atomization, rotary disk atomisation, gas atomization, ultrasonic wave
Atomization, the combination of heating atomization or the above atomizing type.
Beneficial effects of the present invention:
The cold-plasma jet macro-temperature for being mixed into atomization cooling medium is lower, can reduce cutting zone temperature, improves
Cutting zone cooling and lubricating characteristic.
Cold-plasma jet can quickly improve cutting region hydrophily without changing its surface microstructure, cool down atomization
Medium is easier to enter cutting zone.
Compared with traditional oils coolant liquid, atomization cooling medium is easier to undergo phase transition, and heat transfer efficiency is higher, can more effectively drop
Undercut cuts regional temperature.
Atomization cooling medium is mixed into cold plasma generating device, hydroxyl in cold-plasma jet, oxygen can be improved
The strong oxidizing properties active particle concentration such as atom improves jet stream to the hydrophilic regulation efficiency of cutting zone.
Detailed description of the invention
Fig. 1 is atomization cold plasma assisted machining schematic diagram.
Fig. 2 is rear-mounted atomization cold plasma auxiliary machining device schematic diagram.
Fig. 3 is that forward type is atomized cold plasma auxiliary machining device schematic diagram.
In figure: 1 cold plasma fluid generator；2 atomization cooling medium generating devices；3 cold-plasma jets occur
Device；4 atomization cold-plasma jets；5 cutters；6 workpiece；7 air passage one-way valves；Generator occurs for 8 atomization cooling mediums；9 three
Pass joint；10 flowmeters；11 pressure reducing valves；12 work gas sources；13 high voltage power supplies.
Specific embodiment
With reference to the accompanying drawings and detailed description to further detailed description of the invention.
The present invention relates to a kind of methods for being atomized cold plasma assisted machining, mainly include using the equipment of the method
Gas ions jet flow generating apparatus and atomization cooling and lubricating medium generating device.
Cold plasma generating device includes: high voltage power supply 13, adjustable flow meter 10, pressure reducing valve 11, working gas source 12.
Before cutting, be separately connected these equipment according to attached drawing: working gas passes through pressure reducing valve 11 by working gas source 12
Enter plasma fluid generator 1 with adjustable flow meter 10；The output end of the high pressure of high voltage power supply 13 and low pressure respectively with height
Piezoelectricity pole is connected with low-field electrode；Cold plasma fluid generator 1 is fixed on lathe, it can be with the same stepping of cutter 5
It gives；The direction for adjusting plasma fluid generator exit, makes it be aligned in cutting zone position.Working gas source 12 is opened to open
It closes, opens pressure reducing valve 11, adjust adjustable gas flowmeter 10, working gas is made to enter cold-plasma jet with suitable flow
In generator.
Atomization cooling and lubricating medium generating device includes: atomization cooling and lubricating medium generator, air passage one-way valve.
After working gas enters cold plasma fluid generator with stable flow, atomization cooling and lubricating medium is opened
Generator 8, adjustment air passage one-way valve 7 allow the cooling and lubricating medium of atomization to enter plasma generator with constant flow
In.High voltage power supply 13 is opened, the angle of cold plasma fluid generator is adjusted, so that cutting zone is completely submerged in cold etc.
In gas ions jet stream.
Specific embodiment:
Embodiment 1 can realize that atmospheric pressure atomization cold plasma assists micro- milling nickel base superalloy.
Discharge type of the bare electrode cold plasma jet generator 1 using bare electrode, the atmospheric pressure that this electrode generates
Disruptive discharge will not occur between rapidoprint for cold-plasma jet, and high voltage power supply 13 uses mid-frequency sinusoidal alternating current wave
Anode, that is, the high-voltage output end in source, high voltage power supply 13 is connected with high pressure tungsten needle electrode, low pressure copper electricity at low-voltage output and nozzle
Extremely it is connected and is grounded.
Working gas source 12 use purity for 99.999% high pure nitrogen.
Bare electrode cold plasma jet generator 1 is fixed on milling cutter Z axis by workpiece 6 after workbench fixes,
Making jet stream and tool work piece contact area distance is 10mm.
Pressure reducing valve 11 is opened, adjustable flow meter 10 makes flow reach 10L/min and opens atomization cooling and lubricating medium generation
Device, adjustment air passage one-way valve make its outlet pressure maintain 0.1MPa.High voltage power supply 13 is opened at this time, gradually increases voltage,
Until that stable cold-plasma jet can occur.
Cold plasma generating device is adjusted, guarantees that jet stream can cover region to be processed, opens milling machine at this time
Start Milling Process.
Embodiment 2 can realize atmospheric pressure atomization cold plasma assistant grinding processing.
Discharge type of the bare electrode cold plasma jet generator 1 using bare electrode, the atmospheric pressure that this electrode generates
Disruptive discharge will not occur between rapidoprint for cold-plasma jet, and high voltage power supply 13 uses mid-frequency sinusoidal alternating current wave
Anode, that is, the high-voltage output end in source, high voltage power supply 13 is connected with high pressure tungsten needle electrode, low pressure copper electricity at low-voltage output and nozzle
Extremely it is connected and is grounded.
Working gas source 12 use purity for 99.999% high pure nitrogen.
Bare electrode cold plasma jet generator 1 is fixed on grinding wheel feed shaft after workbench fixes by workpiece 6
On, making jet stream and tool work piece contact area distance is 10mm.
Pressure reducing valve 11 is opened, adjustable flow meter 10 makes flow reach 10L/min and opens fog generator, adjusts gas circuit list
Its outlet pressure is set to maintain 0.5MPa to valve.High voltage power supply 13 is opened at this time, gradually increases voltage, it is steady until that can occur
Fixed cold-plasma jet.
Cold plasma generating device is adjusted, guarantees that jet stream can cover region to be processed, opens grinding machine at this time
Start grinding.
Claims (8)
1. a kind of method for being atomized cold plasma assisted machining is moistened using atmosphere cold plasma jet stream and the cooling of atomization
Sliding medium mixed support machining；It is characterized in that, assisted machining process equipment includes cold-plasma jet generating device
With atomization cooling medium generating device；Cold-plasma jet generating device includes high voltage power supply, work gas source, pressure reducing valve, stream
Meter and plasma electrode；Atomization cooling medium generating device includes the cooling and lubricating medium introducing of air passage one-way valve, atomization
Conduit and atomization cooling medium generating device；
High-voltage output end, the low-voltage output of high voltage power supply in cold-plasma jet generating device are electric with plasma respectively
Extremely it is connected；Work gas source accesses plasma electrode after pressure reducing valve and flowmeter adjust separately pressure and flow；Plasma
Uniform cold-plasma jet is ejected at the nozzle of electrode；
The cooling and lubricating medium of atomization introduces tube at one end and accesses plasma electrode, and other end atomization cooling medium fills
It sets；Atomization cooling medium generating device is opened, cooling medium is atomized by conduit and is delivered to plasma electrode；Finally, it is mixed into mist
The plasma jet of the cooling and lubricating medium of change projects at plasma electrode nozzle；
Adjustment is mixed into the position and direction of the cold plasma generating device of the cooling and lubricating medium of atomization, submerges machining area
In the jet stream of cooling and lubricating medium for being mixed into atomization；It is processed at this point, starting lathe, in process, need to guarantee to add
Work area domain is immersed in always in the jet stream for the cooling and lubricating medium for being mixed into atomization.
2. the method for atomization cold plasma assisted machining according to claim 1, which is characterized in that it is described it is cold it is equal from
The discharge type of daughter jet flow generating apparatus is bare electrode electric discharge, dielectric barrier discharge or hollow cathode discharge.
3. the method for atomization cold plasma assisted machining according to claim 1 or 2, which is characterized in that described is cold
The work gas source of plasma jet generating device be nitrogen, argon gas, helium, chlorine, oxygen, in the air that is filtered and dried
One or more kinds of mixing.
4. the method for atomization cold plasma assisted machining according to claim 1 or 2, which is characterized in that described is cold
The discharge power supply of plasma jet generating device is DC high-voltage power supply, low-frequency high-voltage power supply, radio-frequency power supply, microwave height
Voltage source or pulsed high voltage generator.
5. the method for atomization cold plasma assisted machining according to claim 3, which is characterized in that it is described it is cold it is equal from
The discharge power supply of daughter jet flow generating apparatus is DC high-voltage power supply, low-frequency high-voltage power supply, radio-frequency power supply, microwave high pressure electricity
Source or pulsed high voltage generator.
6. according to claim 1, being atomized the method for cold plasma assisted machining described in 2 or 5, which is characterized in that described
The atomization method of atomization cooling medium generating device is pressure atomization, rotary disk atomisation, gas atomization, ultrasonic atomization, heating mist
One of change combines.
7. the method for atomization cold plasma assisted machining according to claim 3, which is characterized in that the atomization is cold
But the atomization method of medium generating device be pressure atomization, rotary disk atomisation, gas atomization, ultrasonic atomization, in heating atomization
A kind of or combination.
8. the method for atomization cold plasma assisted machining according to claim 4, which is characterized in that the atomization is cold
But the atomization method of medium generating device be pressure atomization, rotary disk atomisation, gas atomization, ultrasonic atomization, in heating atomization
A kind of or combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710638290.6A CN109317922B (en) | 2017-08-01 | 2017-08-01 | Atomized cold plasma auxiliary cutting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710638290.6A CN109317922B (en) | 2017-08-01 | 2017-08-01 | Atomized cold plasma auxiliary cutting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109317922A true CN109317922A (en) | 2019-02-12 |
| CN109317922B CN109317922B (en) | 2020-08-14 |
Family
ID=65244897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710638290.6A Active CN109317922B (en) | 2017-08-01 | 2017-08-01 | Atomized cold plasma auxiliary cutting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109317922B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114040560A (en) * | 2021-11-19 | 2022-02-11 | 国网重庆市电力公司电力科学研究院 | Rotatable formula plasma efflux generating device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4725447A (en) * | 1984-09-27 | 1988-02-16 | Regents Of The University Of Minnesota | Method of utilizing a plasma column |
| CN1119424A (en) * | 1993-03-22 | 1996-03-27 | 沃尔·瓦尔 | Separate lubrication and cooling for machining processes |
| JP2001087998A (en) * | 1999-09-16 | 2001-04-03 | Nippon Electric Glass Co Ltd | Method and device for grinding plate glass |
| JP2001332399A (en) * | 2000-05-25 | 2001-11-30 | Mitsubishi Heavy Ind Ltd | Plasma generating device and surface cleaning method using this |
| CN101610632A (en) * | 2009-07-16 | 2009-12-23 | 倪国华 | The plasma torch that cooling agent and working gas annex |
| CN101897240A (en) * | 2007-12-10 | 2010-11-24 | 建筑研究和技术有限公司 | Method and device for the treatment of surfaces |
| CN102601677A (en) * | 2012-03-30 | 2012-07-25 | 大连理工大学 | Atmospheric cold plasma jet auxiliary cutting method |
| CN103286629A (en) * | 2013-05-14 | 2013-09-11 | 南京航空航天大学 | Method and device for forming high-pressure and low-temperature jet flow by cutting coolant |
-
2017
- 2017-08-01 CN CN201710638290.6A patent/CN109317922B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4725447A (en) * | 1984-09-27 | 1988-02-16 | Regents Of The University Of Minnesota | Method of utilizing a plasma column |
| CN1119424A (en) * | 1993-03-22 | 1996-03-27 | 沃尔·瓦尔 | Separate lubrication and cooling for machining processes |
| JP2001087998A (en) * | 1999-09-16 | 2001-04-03 | Nippon Electric Glass Co Ltd | Method and device for grinding plate glass |
| JP2001332399A (en) * | 2000-05-25 | 2001-11-30 | Mitsubishi Heavy Ind Ltd | Plasma generating device and surface cleaning method using this |
| CN101897240A (en) * | 2007-12-10 | 2010-11-24 | 建筑研究和技术有限公司 | Method and device for the treatment of surfaces |
| CN101610632A (en) * | 2009-07-16 | 2009-12-23 | 倪国华 | The plasma torch that cooling agent and working gas annex |
| CN102601677A (en) * | 2012-03-30 | 2012-07-25 | 大连理工大学 | Atmospheric cold plasma jet auxiliary cutting method |
| CN103286629A (en) * | 2013-05-14 | 2013-09-11 | 南京航空航天大学 | Method and device for forming high-pressure and low-temperature jet flow by cutting coolant |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114040560A (en) * | 2021-11-19 | 2022-02-11 | 国网重庆市电力公司电力科学研究院 | Rotatable formula plasma efflux generating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109317922B (en) | 2020-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102601677B (en) | Atmospheric cold plasma jet auxiliary cutting method | |
| Kou et al. | Machining characteristics and removal mechanisms of moving electric arcs in high-speed EDM milling | |
| CN100526512C (en) | Steam turbine valve manifold stellite alloy plasma spray welding method and equipment | |
| CN102259214B (en) | Efficient machining method of controllable ablation metallic material based on electric-spark induction | |
| CN107931757B (en) | Electric discharge machining apparatus and electric spark machine tool based on movement electric arc | |
| CN108637267A (en) | A kind of device and method preparing spherical metal powder using metal wire material | |
| CN109327954A (en) | A kind of atomization cold-plasma jet generating device | |
| CN110303162A (en) | A kind of ultrasonic wave prepares metal ball shaped powder device | |
| CN104308648A (en) | Supersonic speed low-temperature airflow generator for cooling in cutting machining process | |
| CN102172833B (en) | Controllable and ablated non-conductive engineering ceramic grinding method based on discharge induction | |
| CN103691969B (en) | A kind of method of diamond cutter cutting ferrous metals | |
| CN109317922A (en) | A method of atomization cold plasma assisted machining | |
| Chen et al. | A study on machining characteristics of nickel-based alloy with short electric arc milling | |
| CN104108053A (en) | Plasma and pulse discharge composite polishing method for large-scale complicated metal surface | |
| CN109732157A (en) | A kind of near-dry type high-speed electric spark processing method and its device | |
| CN109048088A (en) | A kind of method and device of Long Pulse LASER and plasma jet Compound Machining micropore | |
| CN203530432U (en) | Plasma cladding device | |
| KR101810843B1 (en) | Laser cladding equipment comprising a powder supply device | |
| JP2002220601A (en) | Production method for low oxygen spherical metal powder using dc thermal plasma processing | |
| Kong et al. | Study on the machining characteristics of high-efficiency mixed gas atomized discharge ablation process of titanium alloy | |
| CN210125784U (en) | Quasi-dry type high-speed electric spark machining device | |
| RU2355549C1 (en) | Facility for cooling of cutting area of machine-tool | |
| CN205237075U (en) | Metal and ceramic powder's multi -electrode plasma arc makes device in succession | |
| CN108608002A (en) | A kind of device and method using high energy and high speed plasma flame flow nodularization powder | |
| Perla et al. | Micromachining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |