CN106181100B - A kind of cavitation corrosion accumulation processing method and its device - Google Patents
A kind of cavitation corrosion accumulation processing method and its device Download PDFInfo
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- CN106181100B CN106181100B CN201610589350.5A CN201610589350A CN106181100B CN 106181100 B CN106181100 B CN 106181100B CN 201610589350 A CN201610589350 A CN 201610589350A CN 106181100 B CN106181100 B CN 106181100B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D81/00—Methods, machines, or devices for working metal, covered by more than one main group in this subclass
Abstract
The invention discloses a kind of cavitation corrosion accumulation processing method and devices, are related to de-material manufacture processing technique field.The present invention manufactures cavitation effect using high-pressure water jet to carry out degrading processing, shape required for accumulation is formed to workpiece.The device of the invention, including jet stream generating system, high pressure flood system, pond (1), high-pressure hose (13) and filter (2).When high-pressure water jet vacuole group of the present invention moves to workpiece surface, because the stagnation pressure that workpiece retardance generates promotes vacuole group to crumble and fall, the hot spot for generating about 5000 ± 200 K carries out material molten reduction, reduce the tired threshold values of material, under high frequency time high-pressure shocking wave compound action, cause the fatigue fracture of material, form round block shape and degrade, realizes de-material manufacture.The configuration of the present invention is simple, easy to maintain, cost is relatively low, and environment influences small.The present invention can be to the processing of various difficult moulding materials and micro parts.
Description
Technical field
The present invention relates to machine-building, material forming field, and in particular to de-material manufactures processing technique field, refers in particular to one kind
Cavitation corrosion accumulates processing method and its device.
Background technique
In industrial circle, the occasion that various hardly possible moulding materials and micro parts use is more and more, such as high strength steel, height
The application of performance aluminium alloy, titanium alloy, the gradually expansion of magnesium alloy application, structure shape difficulty increasingly to miniaturization
Greatly, existing material property improves bring difficulty of processing, also there is a small bring complexity of product structure, for example, steel by
250MPA is increased to 1000MPA, and plasticity is reduced to 12% by 45%, and the intensity of aluminium alloy is increased to 530MPA, plasticity by 150MPA
10% is reduced to by 30%.How to find that a kind of machining accuracy is high, production cost is low, adaptability is stronger, particularly suitable for these hardly possiblies
The processing method of rapidoprint and micro parts is problem in the urgent need to address at present.
Mainly there are tradition machinery processing, fine electrical fire for the processing method of these difficult-to-machine materials and micro parts at present
Flower processing, laser processing, electron beam process, fine galvano-cautery processing, ion beam processing, micro-plasticity forming processing, LIGA and standard
LIGA technique etc..Generally speaking, all kinds of processing methods have the following problems at present:
Requirement of the tradition machinery processing to the size of cutter material and micro parts is stringenter, and then improves processing cost
And limit its scope of application；Micro EDM is primarily present processing short circuit, open circuit or arc discharge effect, reduces processing effect
Rate and precision, in addition, there are export license in processing, the problems such as cutter compensation is difficult, process velocity is slow；Laser processing laser adds
Work and electron beam process are at high cost, and equipment is expensive, and there are also re cast layers for laser processing part, and surface quality is poor；Fine galvano-cautery processing
Dispersion corrosion is big, and has corrosion to peripheral equipment；The vacuum system of ion beam processing and a whole set of special equipment are expensive；Micro- modeling
Property forming in workpiece there is deformation, and be limited to tool dimension, be difficult to process microstructure, and to the preparation of formed punch and
Clamping requires also very high；LIGA and Quasi-LIGA process technological investment are big, and process is complicated.These problems how are solved, are proposed
A kind of new machining based conception and processing method are a huge challenges.
For this purpose, this respect is both at home and abroad without reference to so the party at present the invention proposes a kind of completely new processing method
Method has huge development potentiality.
Summary of the invention
The purpose of the present invention is to propose to a kind of cavitation corrosion accumulation processing method and its devices.Cavitation is generated using high-pressure water jet
Effect simultaneously carries out the processing to various difficult moulding materials and micro parts with this.
The technical solution adopted by the present invention is that:
A kind of cavitation corrosion accumulation processing method, which is characterized in that processed workpiece material includes hardness between (80 ~ 700) HV
Metal material
Implement above-mentioned work pieces process, a kind of cavitation corrosion accumulation processing method provided by the present invention comprising the steps of:
1) in high-pressure bottle water filling and the water surface to cavitating nozzle top edge height d1>=150mm, and pressurize so that high pressure-volume
1=0.6 ~ 1.5MPa of pressure p in device；
2) change the relative distance d between work holder and cavitating nozzle2=30 × D, D are that cavitating nozzle outlet is straight
Diameter makes cavitation crumble and fall generation in workpiece surface；
3) high pressure pump group exports high pressure water flow, is measured by pressure regulator valve control, pressure gauge, water jet pressure p2>=80MPa,
High-pressure water jet is projected from cavitating nozzle；
4) it transmits through pressure, can be generated about in 10 μm of regional scopes of workpiece surface diameter when single bubble cavitation is crumbled and fall
The hot spot of 5000 ± 200 K carries out material molten reduction, and generates GPa grades of high-pressure shocking waves and act perpendicularly to workpiece surface, produces
Life is degraded a little, crumble and fall frequency T=450 ~ 500 time/s of the vacuole to workpiece surface；When the single bubble cavitation of workpiece surface is crumbled and fall
It is about the high temperature of 5000 ± 200 K and the high-pressure shocking wave for acting perpendicularly to workpiece surface that workpiece surface, which generates, and generation is degraded
Point；
5) point-by-point layer-by-layer by controlling the pose track of work holder according to the workpiece shapes and requirement processed
It carries out cavitation to workpiece to degrade, final cumulative effect forms required shape.
Workpiece surface mask film covering layer, the mask layer expose part workpiece surface；, thickness k=D, wherein D is cavitation
Nozzle outlet diameter, exposure mask are bonded with workpiece using tabletting type, binding face roughness Ra≤1.6 μm of exposure mask and workpiece.Exposure mask
Cai expect Ying Du≤800HV, such as special cermacis, diamond, ruby.
The effective overlay area d3 of vacuole group=(3 ~ 5) × D in the high-pressure water jet, the processing of single-point single layer, time t used
≤ 8min, abrasion thickness h=(0.5 ~ 1.0) mm, degrades domain area s=л × (d3/2)2。
Implement a kind of device of above-mentioned cavitation corrosion accumulation processing method, including jet stream generating system, high pressure flood system, water
Pond, high-pressure hose and filter, the jet stream generating system include high pressure pump group, pressure gauge, pressure regulator valve and cavitating nozzle；It is described
High pressure flood system includes high-pressure bottle, pressure gauge, drain valve, pressure reducing valve, exhaust valve and work holder；High-pressure bottle is
Closed container, top are disposed with exhaust valve, pressure reducing valve and pressure gauge, and arranged beneath has drain valve, and high-pressure bottle both ends are set respectively
Some cavitating nozzles and work holder；The cavitating nozzle is connected by high-pressure hose with pressure gauge；Pressure gauge passes through height
Pressure hose is successively connected with pressure regulator valve, high pressure pump group, filter, pond.High-pressure bottle is by the acrylic material with high light transmittance
Material is made.Junction between each component of device is connected using flange seal.
Implement a kind of above-mentioned cavitation corrosion accumulation processing method, when moving to workpiece surface based on vacuole group, because workpiece blocks
The stagnation pressure of generation promotes vacuole group to crumble and fall, and vacuole of individually crumbling and fall generates about in about 10 μm of regional scopes of workpiece surface diameter
The hot spot of 5000 ± 200 K carries out material molten reduction, reduces the tired threshold values of material, compound in high frequency time high-pressure shocking wave
Under effect, cause the fatigue fracture of material, form round block shape and degrade, realizes de-material manufacture.
Therefore, the invention has the following beneficial effects:
1) a kind of completely new machining based conception and processing method are proposed, the thermal effect for the cavitation that high pressure jet flow generates is utilized
Reply workpiece is removed processing, can sufficiently excavate the potential beneficial value of cavitation effect, and push Work piece processing method
Diversification.The application of mask technique simultaneously, the high rigidity of mask material, high-fire resistance being capable of the non-processing tables of effective protection workpiece
Face keeps shaping for workpiece more acurrate, and forming effect is more preferable.
2) as a kind of complete water submerged formula processing, it is a kind of cool grinding method that heat fade rate, which is up to 1000K/s, and
It is small that power is degraded after melting reduction, needed for material removal, work pieces process position will not be made to crack, thus can guarantee workpiece
Intensity and fatigue durability requirement.Meanwhile also facilitating the following process of workpiece.
3) device is easy to operate, easy to maintain, at low cost, and environment influences small, potential value with higher.
Detailed description of the invention
Fig. 1 is the schematic diagram of apparatus of the present invention.
Fig. 2 is that Single bubble cavitation crumbles and fall and carries out the schematic diagram that workpiece point degrades processing.
Fig. 3 is that group steeps cavitation and crumbles and fall and carry out the schematic diagram that workpiece single-point single layer degrades processing.
Fig. 4 is that ROM mask programmable read-only memory group steeps cavitation workpiece single-point single layer of crumbling and fall and degrades the schematic diagram of processing.
Fig. 5 is vias masks covering schematic diagram.
Fig. 6 is the top view of Fig. 5.
In figure, 1. ponds, 2. filters, 3. high pressure pump groups, 4. pressure regulator valves, 5. pressure gauges, 6. pressure reducing valves, 7. pressure gauges,
8. exhaust valve, 9. work holders, 10. drain valves, 11. high-pressure bottles, 12. cavitating nozzles, 13. high-pressure hoses, 14. works
Part, 15. vacuoles, 16. degrade a little, 17. vacuole groups, and 18. degrade domain, 19. exposure masks.
Specific embodiment
The present invention will be further described in the following with reference to the drawings and specific embodiments:
Fig. 1 is a kind of showing for method and device that the processing of workpiece 14 is carried out based on high-pressure water jet cavitation effect of the present invention
It is intended to, including is sequentially connected pond 1, filter 2 and jet stream generating system, jet stream generating system and high pressure flood system passes through sky
Change nozzle 12 to be arranged in one end of high-pressure bottle 11 and generate connection relationship；Wherein jet stream generating system includes being sequentially connected high pressure
Pump group 3, pressure regulator valve 4, pressure gauge 5 and cavitating nozzle 12；High pressure flood system is included in 11 top arranging exhaust air valve of high-pressure bottle
8, pressure reducing valve 6 and pressure gauge 7, arranged beneath drain valve 10；Work holder 9 is located at one end of high-pressure bottle 11, with cavitation
Nozzle 12 is arranged symmetrically.
Fig. 2 crumbles and fall for Single bubble cavitation carries out 14 points of the workpiece schematic diagram figures for degrading processing, and water flow produces in cavitating nozzle 12
Raw vacuole 15, vacuole 15 move to 14 surface of workpiece with jet stream and crumble and fall, can produce in workpiece 14 surface diameter, 10 μm of regional scopes
The hot spot of raw about 5000 ± 200 K carries out material molten reduction, and generates GPa grades of high-pressure shocking waves and act perpendicularly to 14 table of workpiece
Face, generation degrade a little 16, crumble and fall frequency T=450 ~ 500 time/s of the vacuole to 14 surface of workpiece.
Fig. 3 crumbles and fall for group's bubble cavitation carries out the schematic diagram that 14 single-point single layer of workpiece degrades processing, and water flow is in cavitating nozzle 12
Interior generation vacuole 15 forms vacuole group within the scope of the effective diameter of water jet, and being formed to 14 surface of workpiece has certain size
Round covering surface, degrade a little 16 eclipsing effects using group's bubble, generation lamellar degrades domain 18.
Fig. 4 is that ROM mask programmable read-only memory group steeps cavitation 14 single-point single layer of workpiece of crumbling and fall and degrades the schematic diagram of processing, relative in Fig. 3 without covering
The group of film, which steeps cavitation and crumbles and fall, to carry out 14 single-point single layer of workpiece and degrades processing method, due to the high rigidity of mask material, high-fire resistance,
Can the non-processing surface of effective protection workpiece, improve the dimensional accuracy of workpiece and the finish of circular hole interior surface.
Fig. 5,6 are bonded schematic diagram with workpiece 14 for vias masks 19, and exposure mask 19 is bonded with workpiece 14 using tabletting type, exposure mask
19, the roughness value of both workpiece 14 binding face is taken as 1.6 μm, and 19 material of exposure mask is super hard nano ceramics, but this is not dark
Other high-hardness cannot be used by showing.
Embodiment 1: 14 material of workpiece used in the present embodiment is the ordinary steel of hardness HB=200, is described with reference to the accompanying drawings sky
Lose cumulative thickness H=5mm, diameter D1The processing of=10mm through-hole, it includes following steps:
(1) start high pressure pump group, idle running 10 minutes, indices were normal；
(2) pressure regulator valve is controlled, 150MPa is slowly increased to pressure gauge 5, continues 30 minutes, the operation of display high pressure pump group is just
Often, system is stablized without obvious leakage, pressure, meets and implements to require；
(3) in high-pressure bottle 11 water filling and the water surface to 12 top edge height d of cavitating nozzle1=180mm, and pressurize so that high
Pressure p in pressure vessel 111=1.0MPa；
(4) it turns on the power switch, water is delivered to filter 2 through connecting tube in pond 1；
(5) filter 2 provides source of clean water to high pressure pump group 3 by connecting tube, and is delivered to the injection of cavitating nozzle 12；
(6) by pressure regulation valve regulation water flow pressure, water jet pressure p is measured through pressure gauge 52=80MPa；
(7) relative distance d between setting workpiece clamping device 9 and cavitating nozzle 122=30 × D=2.4mm, wherein D=
0.8mm is 12 outlet diameter of cavitating nozzle；
(8) according to the size for the through-hole processed, the pose track of work holder 9 is controlled, with workpiece where through-hole
The circular center of circle on 14 surfaces is starting point, and 6min carries out a subslot variation, point-by-point successively to work from inside to outside in the shape of a spiral
Part 14 carries out material denudation；
(9) abrasion is often completed the process, workpiece 14 is controlled from work holder 9 and is promoted to cavitating nozzle 12
0.5mm；
(10) step (8) ~ (9) are repeated, when denudation depth reaches H, the pose track of control work holder 9 terminates
Cavitation is degraded, the size shape of through-hole required for final cumulative effect is formed.
Embodiment 2: 14 material of workpiece used in the present embodiment is the ordinary steel of hardness HB=200, is described with reference to the accompanying drawings sky
Lose cumulative thickness H=5mm, diameter D1The processing of=10mm through-hole, it includes following steps:
(1) vias masks 19 are bonded with workpiece 14 using tabletting mode, and are fixed on work holder 9；
(2) start high pressure pump group, idle running 10 minutes, indices were normal；
(3) pressure regulator valve is controlled, is slowly increased to 150MPa to pressure gauge 5, continue 30 minutes, the operation of display high pressure pump group is just
Often, system is stablized without obvious leakage, pressure, meets and implements to require；
(4) in high-pressure bottle 11 water filling and the water surface to 12 top edge height d of cavitating nozzle1=180mm, and pressurize so that high
Pressure p in pressure vessel 111=1.0MPa；
(5) it turns on the power switch, water is delivered to filter 2 through connecting tube in pond 1；
(6) filter 2 provides source of clean water to high pressure pump group 3 by connecting tube, and is delivered to the injection of cavitating nozzle 12；
(7) by pressure regulation valve regulation water flow pressure, water jet pressure p is measured through pressure gauge 52=150MPa；
(8) relative distance d between setting workpiece clamping device 9 and cavitating nozzle 122=30 × D=2.4mm, wherein D=
0.8mm is 12 outlet diameter of cavitating nozzle；
(9) according to the size for the through-hole processed, the pose track of work holder 9 is controlled, with workpiece where through-hole
The circular center of circle on 14 surfaces is starting point, and 4min carries out a subslot variation, point-by-point successively to work from inside to outside in the shape of a spiral
Part 14 carries out material denudation；
(10) it is machined to the final contoured band of the abrasion (radial dimension d to be degraded4<d3/ 2) when, work holder is controlled
9 pose track makes the axis of cavitating nozzle 12 and 14 surface of workpiece obtain intersection point and keeps weight with the sideline of 19 circular hole of exposure mask always
It closes；
(11) abrasion is completed the process, workpiece 14 is controlled from work holder 9 and is promoted to cavitating nozzle 12
0.8mm；
(12) step (8) ~ (9) are repeated, when denudation depth reaches H, the pose track of control work holder 9 terminates
Cavitation is degraded, the size shape of through-hole required for final cumulative effect is formed.
2 processing efficiency of embodiment improves 40% relative to embodiment 1, and dimensional accuracy improves two orders of magnitude, and the circle processed
Internal surface of hole roughness value reduces by 1.6 μm.
Claims (8)
1. a kind of cavitation corrosion accumulates processing method, which is characterized in that manufacture cavitation effect using high-pressure water jet to carry out to workpiece
Degrade processing, shape required for accumulation is formed comprising the steps of:
Water filling and the water surface are to cavitating nozzle (12) top edge height d in high-pressure bottle (11)1>=150mm, and pressurize so that high pressure-volume
Pressure p 1=0.6~1.5MPa in device (11)；
Change the relative distance d between work holder (9) and cavitating nozzle (12)2=30 × D, D go out for cavitating nozzle (12)
Mouth diameter makes cavitation crumble and fall generation on workpiece (14) surface；Workpiece surface mask film covering (19) layer, exposure mask (19) the layer exposure
Part workpiece (14) surface out, the expose portion are the shape processed needed for workpiece (14)；The exposure mask (19) be Ying Du≤
The material of 800HV；The exposure mask (19) is ceramics, diamond or ruby；
High pressure pump group (3) exports high pressure water flow, is measured by pressure regulator valve (4) control, first pressure gauge (5), water jet pressure p2≥
80MPa, high-pressure water jet are projected from cavitating nozzle (12)；
Transmitted through pressure, when the single bubble cavitation on workpiece (14) surface is crumbled and fall workpiece (14) surface generate about 5000 ±
Point (16) are degraded in the high temperature of 200K and the high-pressure shocking wave for acting perpendicularly to workpiece (14) surface, generation；
It is point-by-point layer-by-layer by controlling the pose track of work holder (9) according to workpiece (14) shape processed and requirement
It carries out cavitation to workpiece (14) to degrade, final cumulative effect forms required shape.
2. a kind of cavitation corrosion according to claim 1 accumulates processing method, which is characterized in that described, exposure mask (19) and workpiece
It is bonded using tabletting type, binding face roughness Ra≤1.6 μm of exposure mask and workpiece.
3. a kind of cavitation corrosion according to claim 1 or 2 accumulates processing method, which is characterized in that in the high-pressure water jet
Effective overlay area d3=(3~the 5) × D of vacuole group, the processing of single-point single layer, time t≤8min used, abrasion thickness
H=(0.5~1.0) mm degrades domain (18) area s=л × (d3/2)2。
4. a kind of cavitation corrosion according to claim 1 or 2 accumulates processing method, which is characterized in that the material of the workpiece (14)
Material is metal material of the hardness between (80~700) HV.
5. implementing a kind of device of cavitation corrosion accumulation processing method described in any one of Claims 1 to 44, which is characterized in that
Including jet stream generating system, high pressure flood system, pond (1), high-pressure hose (13) and filter (2), the jet stream system
System includes high pressure pump group (3), first pressure gauge (5), pressure regulator valve (4) and cavitating nozzle (12)；The high pressure flood system includes
High-pressure bottle (11), second pressure gauge (7), drain valve (10), pressure reducing valve (6), exhaust valve (8) and work holder (9)；It is high
Pressure vessel (11) is closed container, and top is disposed with exhaust valve (8), pressure reducing valve (6) and second pressure gauge (7), and arranged beneath has
Drain valve (10), the cavitating nozzle (12) and work holder (9) that high-pressure bottle (11) both ends are respectively equipped with；The cavitation spray
Mouth (12) is connected by high-pressure hose (13) with first pressure gauge (5)；First pressure gauge (5) by high-pressure hose (13) successively with
Pressure regulator valve (4), high pressure pump group (3), the high pressure pump group (3) are connected by high-pressure hose (13) with filter (2), the filtering
Device (2) connects pond (1).
6. a kind of cavitation corrosion according to claim 5 accumulates processing unit (plant), which is characterized in that high-pressure bottle (11) is by having height
The acrylic material of translucency is made.
7. a kind of cavitation corrosion according to claim 5 or 6 accumulates processing unit (plant), which is characterized in that the cavitating nozzle (12)
Outlet diameter D=0.6~1.2mm.
8. a kind of cavitation corrosion according to claim 5 or 6 accumulates processing unit (plant), which is characterized in that each component of described device it
Between junction using flange seal connect.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610589350.5A CN106181100B (en) | 2016-07-26 | 2016-07-26 | A kind of cavitation corrosion accumulation processing method and its device |
| PCT/CN2016/094100 WO2018018662A1 (en) | 2016-07-26 | 2016-08-09 | Method and device for cavitation accumulation processing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610589350.5A CN106181100B (en) | 2016-07-26 | 2016-07-26 | A kind of cavitation corrosion accumulation processing method and its device |
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| CN106181100A CN106181100A (en) | 2016-12-07 |
| CN106181100B true CN106181100B (en) | 2019-05-31 |
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| WO (1) | WO2018018662A1 (en) |
Families Citing this family (2)
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| CN106216770A (en) * | 2016-07-26 | 2016-12-14 | 江苏大学 | A kind of processing method based on high-pressure water jet cavitation effect and device |
| CN108533434A (en) * | 2018-01-25 | 2018-09-14 | 中国第汽车股份有限公司 | A kind of fuel injector mesoporous internal face intensifying device and application method |
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| WO2018018662A1 (en) | 2018-02-01 |
| CN106181100A (en) | 2016-12-07 |
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