CN107058718B - A kind of device and method strengthened for axial workpiece cavitation jet - Google Patents
A kind of device and method strengthened for axial workpiece cavitation jet Download PDFInfo
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- CN107058718B CN107058718B CN201710143402.0A CN201710143402A CN107058718B CN 107058718 B CN107058718 B CN 107058718B CN 201710143402 A CN201710143402 A CN 201710143402A CN 107058718 B CN107058718 B CN 107058718B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
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Abstract
The present invention provides a kind of device and methods strengthened for axial workpiece cavitation jet, the device includes Work-piece processing system, high service system, low service, cistern and spray nozzle device, the spray nozzle device is T-shaped structure, the central axis of spray nozzle device is equipped with through-hole, annular channel identical with high pressure water hole is equipped on the outside of through-hole, the inner wall of spray nozzle device is equipped with multiple equally distributed contractive set channel layer, the contractive set channel layer is equipped with circumferentially equally distributed contracted channel, contracted channel are communicated with through-hole and annular channel；The present invention by giving annular channel and through-hole for high pressure water and low pressure water respectively, so that contracted channel generates cavitation bubble, local super-pressure is generated when crumbling and fall using cavitation bubble and high impact wave strengthens the surface of axial workpiece, strengthen the present invention compared to laser cavitation and avoids introducing external energy to reach generation cavitation effect, whole device system structure is simple simultaneously, is conducive to the quick reinforcing of longaxones parts.
Description
Technical field
The present invention relates to the device and method of axial workpiece cavitation, more particularly to one kind are strong for axial workpiece cavitation jet
The device and method of change.
Background technology
Cavitation phenomenon is a kind of phenomenon in fluid dynamics, the problem of being field of hydraulic machinery long-term existence.Work as liquid
When internal local pressure is reduced to saturated vapor pressure or even negative value, a hole can be formed on the boundary of liquid internal and solid-liquid,
Commonly referred to as this phenomenon is cavitation.With research field it is continuous expansion and deeply, water pump and the hydraulic turbine be found that in succession by
In the cavitation corrosion caused by cavitation the phenomenon that, also there is cavitation erosion in the discharge structure of high dam.The profit for how rationally
It is always researcher problem of interest for social production service with cavitation phenomenon.
For axis as the core component on rotating mechanism, use scope is very extensive.Axis is that stress is most in whole rotating mechanism
Big and the most complicated component, the stability of axis directly determine the stability of whole system.However, negative due to bearing torque for a long time
The extruding and friction of lotus and bearing, the most important destruction of axial workpiece show as abrasion, plastic deformation, fatigue fracture, seriously
When even there is the situation directly twisted off, seriously threaten unit safety.Therefore, intensive treatment is carried out to the surface of axial workpiece,
Improving its wear-resisting property and fatigue life has far-reaching significance.
Cavitation jet strengthen be it is a kind of using bubble collapse when the high-energy density shock wave that generates surface is carried out to material
The method of intensive treatment, this method coordinate the nozzle induction of special construction to generate cavitation vacuole by high-pressure water jet, and vacuole exists
Material surface crumbles and fall and generates microjet and shock wave, so that material surface crystal structure is changed and generates larger residual
Residue stress.Advantage of the method compared with laser cavitation reinforcement induces the generation of cavitation without external energy is introduced,
And relatively traditional bead method have many advantages, such as efficiently, clean and energy saving.However, there is no apply cavitation in the prior art
It is jet strengthened that the device of surface Hardening Treatment is carried out to material.
Invention content
In response to the deficiencies in the existing technology, the present invention provides a kind of devices strengthened for axial workpiece cavitation jet
And method, vacuole is generated by nozzle, it is strong that the jet stream for carrying vacuole is acted directly on to progress surface on the surface of axial workpiece
Change, the vacuole shock wave that varying strength can be carried out to axis metalloid material surface is strengthened.
The present invention achieves the above technical objects by the following technical means.
A kind of device strengthened for axial workpiece cavitation jet, including Work-piece processing system, high service system, low pressure
Water system, cistern and spray nozzle device；
The Work-piece processing system includes driving device and processing pond, and the driving device is slidably connected with two-dimentional guide rail,
Driving device is equipped with scroll chuck and scroll chuck controls handle, and the scroll chuck is for clamping and positioning and test specimen axis；
The spray nozzle device is T-shaped structure, and the central axis of spray nozzle device is equipped with through-hole, annular flow is equipped on the outside of through-hole
The upper end in road, spray nozzle device is equipped with both sides about the symmetrical high pressure water hole of through-hole, and the high pressure water hole is communicated with annular channel；
The spray nozzle device is horizontal positioned, and test specimen axis passes through through-hole, through-hole and two-dimentional guide rail keeping parallelism, the both ends of through-hole
It is equipped with choma between respectively front nozzle and rear nozzle, front nozzle and rear nozzle and test specimen axis, is set on the inner wall of spray nozzle device
There are multiple contractive set channel layer, the contractive set channel layer to be equipped with circumferentially equally distributed multiple contracted channels, the contractive set
The tangential angle α of water inlet in road is more than the tangential angle β of water outlet, and contracted channel is communicated with annular channel and through-hole；
The processing pond is located at the lower section of spray nozzle device, and processing pond passes through piping connection with cistern；
The high service system supplies water to high pressure water hole, and the low service is supplied to the through-hole on spray nozzle device
Water.
Preferably, the high service system includes high-pressure plunger pump, and the water outlet of high-pressure plunger pump is distinguished by pipeline
It is connect with high pressure water hole and cistern；The low service includes centrifugal pump, and centrifugal pump is filled with nozzle respectively by pipeline
The rear nozzle set is connected with cistern.
Preferably, relief valve is installed on the water outlet of the high-pressure plunger pump and the connecting line of cistern.
Preferably, the high-pressure plunger pump is equipped with pressure gauge with high pressure water hole junction.
Preferably, the tangential angle α of the water inlet of the contracted channel be 30 °~40 °, the tangential angle β of water outlet be 20 °~
30 °, the circumference cornerite γ of the contracted channel is 40 °~45 °, and the radial thickness of the contracted channel internal and external circumference is nozzle dress
Set the wall thickness of outer wall 0.1~0.5 times, the contractive set channel layer are axially equidistantly uniformly distributed along spray nozzle device, the nozzle dress
Set 0.4~0.8 times that the test specimen axial length containing contractive set channel layer is through-hole axial length.
A method of using the above-mentioned device strengthened for axial workpiece cavitation jet, comprise the steps of：
Step 1：Test specimen axis is pre-processed.Test specimen axis surface is cleaned with absolute ethyl alcohol or acetone, removes test specimen axis table
The greasy dirt and grieshoch in face keep test specimen axis surface brighter and cleaner, prevent from generating interference to cavitation jet strengthening process；
Step 2：The clamping and positioning of test specimen axis.With scroll chuck by pretreated test specimen axis clamping, test specimen axis is made to pass through
The through-hole of spray nozzle device, and it is coaxial with spray nozzle device.
Step 3：Start the centrifugal pump in low service, low pressure water is injected into through-hole so that the reinforcing of test specimen axis
Section is submerged in low pressure water；
Step 4：Start high-pressure plunger pump, the water in water storage pond is input to high pressure water hole, monitors the pressure of pressure gauge
Value, the adjusting pressure release valve when hypertonia；
Step 5：Start driving device, driving test specimen axis is carried out at the same time circular motion and at the uniform velocity axial feed motion, ensures
The uniformity and reliability of surface peening.
Step 6：All devices are closed, treated test specimen axis is removed, are applied on test specimen axis surface after drying process
Upper corrosion protection layer.
Beneficial effects of the present invention：
1) present invention generates cavitation bubble using the contracted channel of spray nozzle device, and local superelevation is generated when crumbling and fall using cavitation bubble
Pressure and high impact wave strengthen the surface of axial workpiece, relatively traditional bead method have efficiently, cleaning and energy saving etc.
Advantage, and strengthen the present invention compared to laser cavitation and avoid introducing external energy to reach generation cavitation effect, while whole device
System structure is simple, is conducive to the quick reinforcing of longaxones parts；
2) vacuole shock wave reinforcing axial workpiece is more more obvious than traditional shot-peening effect, the residual compressive stress of wall surface,
Fatigue life is obviously extended, and the wearability of axis is strengthened.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram for axial workpiece cavitation jet intensifying device of the present invention.
Fig. 2 is the axial cross-sectional views of spray nozzle device of the present invention.
Fig. 3 is the contractive set channel layer schematic diagram on spray nozzle device of the present invention.
Wherein：
1. high-pressure plunger pump；2. driving device；3. processing pond；4. spray nozzle device；5. test specimen axis；6. water storage pond；7. pressure
Power table；8. relief valve；9. centrifugal pump, 10. chomas；11. two-dimentional guide rail；12. scroll chuck；13. high pressure water hole；14. contractive set
Road；15. through-hole；16. annular channel.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further illustrated, but protection scope of the present invention is simultaneously
It is without being limited thereto.
As shown in Figure 1, a kind of device strengthened for axial workpiece cavitation jet of the present invention, including work pieces process
System, high service system, low service, cistern 6 and spray nozzle device 4, the Work-piece processing system include that driving fills
2 and processing pond 3 are set, the driving device 2 is equipped with scroll chuck 12 and scroll chuck controls handle, and the scroll chuck 12 is used
It is slidably connected with two-dimentional guide rail 11 with test specimen axis 5, driving device 2 in clamping and positioning, the two dimension guide rail 11 and driving device 2
Test specimen axis 5 may be implemented and be carried out at the same time feed motion and rotary motion.
The spray nozzle device 4 is T-shaped structure, and the central axis of spray nozzle device 4 is equipped with through-hole 15, and 15 outside of through-hole is equipped with
Annular channel 16, the upper end of spray nozzle device 4 are equipped with both sides about 15 symmetrical high pressure water hole 13 of through-hole, the high pressure water hole 13 with
Annular channel 16 communicates.
Spray nozzle device 4 is placed on holder so that and through-hole 15 passes through through-hole 15 with 11 keeping parallelism of two-dimentional guide rail, test specimen axis 5,
The both ends of through-hole 15 are respectively front nozzle and rear nozzle, and choma 10 is equipped between front nozzle and rear nozzle and test specimen axis 5, described
Choma 10 can seal up a part of gap between front and back nozzle and axis 5.
The inner wall of spray nozzle device 4 is equipped with multiple contractive set channel layer, and the contractive set channel layer, which is equipped with, circumferentially uniformly divides
Multiple contracted channels 14 of cloth, the contracted channel 14 are communicated with annular channel 16 and through-hole 15.The contracted channel 14 into
The tangential angle α in the mouth of a river is 30 °~40 °, and the tangential angle β of water outlet is 20 °~30 °, the circumference cornerite γ of the contracted channel 14
It is 40 °~45 °, the radial thickness of 14 internal and external circumference of the contracted channel is 0.1~0.5 times of the wall thickness of 4 outer wall of spray nozzle device,
The contractive set channel layer is equidistantly uniformly distributed along 4 axis of spray nozzle device, and the axial length containing runner is on the spray nozzle device 4
0.4~0.8 times of 15 axial length of through-hole.
The lower section that the processing pond 3 is located at spray nozzle device 4 is used to collect outflow at the front and back nozzle on spray nozzle device 4
Water, processing pond 3 are connect with cistern 6.The high service system includes high-pressure plunger pump 1, and the water outlet of high-pressure plunger pump 1 is logical
Connection of the pipeline respectively with high pressure water hole 13 and with cistern 6 is crossed, high-pressure plunger pump 1 is set on the connecting line in high pressure water hole 13
There is relief valve 8, the hypertonia for preventing high pressure water ensures the safe and reliable of device.High-pressure plunger pump 1 and high pressure water hole 13
Junction pressure gauge 7 is installed, the pressure gauge 7 is used to monitor the inlet pressure of nozzle.
The low service includes centrifugal pump 9, centrifugal pump 9 by pipeline respectively with the rear nozzle on spray nozzle device 4
It is connected with cistern 6.
Using the method for the device of the present invention strengthened for test specimen axial workpiece cavitation jet, comprise the steps of：
Step 1：Test specimen axis 5 is pre-processed.5 surface of test specimen axis is cleaned with absolute ethyl alcohol or acetone, removes test specimen examination
The greasy dirt and grieshoch on 5 surface of part axis keep 5 surface of test specimen axis brighter and cleaner, prevent from generating interference to cavitation jet strengthening process；
Step 2：The clamping and positioning of test specimen axis 5.Pretreated test specimen axis 5 is clamped with scroll chuck 12, makes test specimen axis
5 pass through the through-hole 5 of spray nozzle device 4, and coaxial with spray nozzle device 4.
Step 3：Start the centrifugal pump 9 in low service, injects low pressure water into through-hole 5 so that test specimen axis 5
Strengthening segment is submerged in low pressure water；
Step 4：Start high-pressure plunger pump 1, the water in water storage pond 6 is input to high pressure water hole 13, monitors pressure gauge 7
Pressure value, the adjusting pressure release valve 8 when hypertonia；
Step 5：Start driving device 2, driving test specimen axis 5 is carried out at the same time circular motion and at the uniform velocity axial feed motion, protects
Demonstrate,prove the uniformity and reliability of surface peening.
Step 6：All devices are closed, treated test specimen axis 5 is removed, on 5 surface of test specimen axis after drying process
Coat corrosion protection layer.
The embodiment is the preferred embodiments of the present invention, but present invention is not limited to the embodiments described above, not
Away from the present invention substantive content in the case of, those skilled in the art can make it is any it is conspicuously improved, replace
Or modification all belongs to the scope of protection of the present invention.
Claims (6)
1. a kind of device strengthened for axial workpiece cavitation jet, which is characterized in that including Work-piece processing system, high service
System, low service, cistern (6) and spray nozzle device (4)；
The Work-piece processing system includes driving device (2) and processes pond (3), the driving device (2) and two-dimentional guide rail (11)
It is slidably connected, driving device (2) is equipped with scroll chuck (12) and scroll chuck controls handle, and the scroll chuck (12) is used for
It clamps and positions and test specimen axis (5)；
The spray nozzle device (4) is T-shaped structure, and the central axis of spray nozzle device (4) is equipped with through-hole (15), through-hole (15) outside
Equipped with annular channel (16), the upper end of spray nozzle device (4) is equipped with both sides about the symmetrical high pressure water hole (13) of through-hole (15), described
High pressure water hole (13) is communicated with annular channel (16)；
The spray nozzle device (4) is horizontal positioned, and test specimen axis (5) passes through through-hole (15), through-hole (15) to be kept with two-dimentional guide rail (11)
Parallel, the both ends of through-hole (15) are respectively front nozzle and rear nozzle, and mouth is equipped between front nozzle and rear nozzle and test specimen axis (5)
The inner wall of ring (10), spray nozzle device (4) is equipped with multiple contractive set channel layer, and the contractive set channel layer, which is equipped with, circumferentially uniformly divides
The tangential angle α of water inlet of multiple contracted channels (14) of cloth, the contracted channel (14) is more than the tangential angle β of water outlet, receives
Contracting runner (14) is communicated with annular channel (16) and through-hole (15)；
Processing pond (3) is located at the lower section of spray nozzle device (4), and processing pond (3) passes through piping connection with cistern (6)；
The high service system supplies water to high pressure water hole (13), and the low service is to the through-hole on spray nozzle device (4)
(15) it supplies water.
2. the device according to claim 1 strengthened for axial workpiece cavitation jet, which is characterized in that the high pressure supplies
Water system includes high-pressure plunger pump (1), the water outlet of high-pressure plunger pump (1) by pipeline respectively with high pressure water hole (13) and water storage
Pond (6) connects；The low service includes centrifugal pump (9), centrifugal pump (9) by pipeline respectively on spray nozzle device (4)
Rear nozzle and cistern (6) connection.
3. the device according to claim 2 strengthened for axial workpiece cavitation jet, which is characterized in that the high-pressure column
The water outlet of plug pump (1) is equipped with relief valve (8) on the connecting line of cistern (6).
4. the device according to claim 2 strengthened for axial workpiece cavitation jet, which is characterized in that the high-pressure column
Plug pump (1) is equipped with pressure gauge (7) with high pressure water hole (13) junction.
5. the device according to claim 1 strengthened for axial workpiece cavitation jet, which is characterized in that the contractive set
The tangential angle α of water inlet in road (14) is 30 °~40 °, the tangential angle β of water outlet is 20 °~30 °, the contracted channel (14)
Circumference cornerite γ be 40 °~45 °, the radial thickness of contracted channel (14) internal and external circumference is spray nozzle device (4) outer wall
0.1~0.5 times of wall thickness, the contractive set channel layer are axially equidistantly uniformly distributed along spray nozzle device (4), the spray nozzle device (4)
On the test specimen axial length containing contractive set channel layer be 0.4~0.8 times of through-hole (15) axial length.
6. it is a kind of using the method for being used for the device that axial workpiece cavitation jet is strengthened described in claim 1, it comprises the steps of：
Step 1：Test specimen axis (5) is pre-processed, test specimen axis (5) surface is cleaned with absolute ethyl alcohol or acetone, removes test specimen
The greasy dirt and grieshoch on axis (5) surface keep test specimen axis (5) surface brighter and cleaner, prevent from generating interference to cavitation jet strengthening process；
Step 2：Pretreated test specimen axis (5) is clamped with scroll chuck (12), makes examination by the clamping and positioning of test specimen axis (5)
Part axis (5) passes through the through-hole (5) of spray nozzle device (4), and coaxial with spray nozzle device (4)；
Step 3：Start the centrifugal pump (9) in low service, to injection low pressure water in through-hole (5) so that test specimen axis (5)
Strengthening segment be submerged in low pressure water；
Step 4：Start high-pressure plunger pump (1), the water in cistern (6) is input to high pressure water hole (13), monitors pressure gauge
(7) pressure value, adjusting pressure release valve (8) when hypertonia；
Step 5：Start driving device (2), driving test specimen axis (5) is carried out at the same time circular motion and at the uniform velocity axial feed motion, protects
Demonstrate,prove the uniformity and reliability of surface peening；
Step 6：All devices are closed, treated test specimen axis (5) is removed, on test specimen axis (5) surface after drying process
Coat corrosion protection layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710143402.0A CN107058718B (en) | 2017-03-11 | 2017-03-11 | A kind of device and method strengthened for axial workpiece cavitation jet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710143402.0A CN107058718B (en) | 2017-03-11 | 2017-03-11 | A kind of device and method strengthened for axial workpiece cavitation jet |
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| CN107058718A CN107058718A (en) | 2017-08-18 |
| CN107058718B true CN107058718B (en) | 2018-08-21 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107385174B (en) * | 2017-08-28 | 2019-03-15 | 苏州热工研究院有限公司 | A kind of device and method that material surface is strengthened using cavitating water jet |
| CN107631952A (en) * | 2017-09-05 | 2018-01-26 | 河海大学 | A kind of rotating circular disk cavitation and cavitation erosion experimental provision and method |
| CN109777935B (en) * | 2019-02-25 | 2020-08-28 | 江苏大学 | Device and method for high-pressure cavitation jet flow strengthening |
| CN109837383A (en) * | 2019-04-19 | 2019-06-04 | 徐州万达回转支承有限公司 | A kind of axial workpiece cavitation jet intensifying device and application method |
| CN110055390B (en) * | 2019-04-28 | 2020-08-28 | 江苏大学 | Pressure alternating immersion type inner hole surface strengthening device and method |
| CN110129537B (en) * | 2019-04-28 | 2020-09-25 | 江苏大学 | Pressure alternating type micropore inner surface cavitation shot blasting equipment and working method |
| CN110055397B (en) * | 2019-04-28 | 2020-08-28 | 江苏大学 | Magnetic driving type taper hole inner surface strengthening equipment |
| CN114425539B (en) * | 2022-03-15 | 2022-12-16 | 广东工业大学 | Method and device for cleaning gap of lining by rotary laser cavitation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5744781A (en) * | 1995-08-07 | 1998-04-28 | General Electric Company | Method and apparatus for laser shock peening |
| US5741559A (en) * | 1995-10-23 | 1998-04-21 | Lsp Technologies, Inc. | Laser peening process and apparatus |
| CN102491486B (en) * | 2011-12-19 | 2014-04-02 | 中国人民解放军后勤工程学院 | Equipment for degrading phenol-containing wastewater by using reinforced water jet cavitation process |
| CN102925646B (en) * | 2012-11-14 | 2014-04-09 | 江苏大学 | Method and device of shot peening for surface of metal component by means of light-water complex |
| CN104724771A (en) * | 2014-12-12 | 2015-06-24 | 青岛科技大学 | Cavitator for reinforcing sewage decontamination efficiency by hydraulic cavitation technology |
| CN104673972B (en) * | 2015-03-24 | 2016-08-24 | 江苏科技大学 | A kind of jet shot-blast unit |
| CN104942442A (en) * | 2015-06-11 | 2015-09-30 | 温州大学 | Laser micro-processing device and method thereof |
| CN105039676B (en) * | 2015-08-21 | 2018-02-27 | 江苏大学 | A kind of method and apparatus of laser compound processing metal material |
| CN206570371U (en) * | 2017-03-11 | 2017-10-20 | 江苏大学 | A kind of device strengthened for axial workpiece cavitation jet |
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