CN106636607A - Controllable constrained laser micro shot peening intensification device and method thereof - Google Patents
Controllable constrained laser micro shot peening intensification device and method thereof Download PDFInfo
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- CN106636607A CN106636607A CN201710001532.0A CN201710001532A CN106636607A CN 106636607 A CN106636607 A CN 106636607A CN 201710001532 A CN201710001532 A CN 201710001532A CN 106636607 A CN106636607 A CN 106636607A
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- laser
- deionized water
- shot peening
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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
- C21D10/005—Modifying the physical properties by methods other than heat treatment or deformation by laser shock processing
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- Laser Beam Processing (AREA)
Abstract
The invention discloses a controllable constrained laser micro shot peening intensification device and a method thereof. The device comprises a circulating water system. A deionized water curtain is adopted as a constrained layer and is provided through the circulating water system; a high-speed camera is used for observing the growth and gathering situation of bubbles in a laser micro shot peening intensification process on line; a motor is used for driving a hydraulic pump to enable deionized water to circularly flow in the whole circulation water system; the pressure and the flow rate of the deionized water in the circulating water system are controlled to take away bubbles generated near a focal point in the laser micro shot peening intensification process so as to improve laser micro shot peening efficiency. The deionized water in the circulating water system is kept in certain pressure, so that the rigidity of the deionized water curtain on the surface of a laser micro shot peening metal sample is increased, the constraining function of the deionized water curtain for plasma explosion is improved, material surface laser-induced shock wave pressure is enhanced, and an active function is performed on improving a laser micro shot peening intensification effect.
Description
Technical field
The present invention relates to laser machine and process for modifying surface field, more particularly to metal material table under a kind of controllable constraint
The processing method and device of the micro- shot peening strengthening of face laser.
Background technology
The micro- shot peening strengthening of laser is to improve metal material surface mechanical property using the stress effect of induced with laser shock wave
A kind of effective ways, with potential application prospect.
During the micro- shot peening strengthening metal parts surface of laser, the effect of restraint layer is that the plasma of confining blast freely expands
Dissipate, the stress effect for making shock wave more intensively acts on metal surface, conventional restraint layer have K9 glass and flowing go from
Sub- water curtain.During the micro- shot peening strengthening of laser, low energy pulses laser-produced plasma is weaker, K9 glass and metal material surface
There is laminating gap, it is impossible to fully seal plasma, had a strong impact on the effect of the micro- shot-peening of laser.The deionization water curtain of flowing
Part surface of different shapes is adapted to, is fitted with piece surface relatively tight, low cost, translucency are good, can be recycled, and current
The residue produced by absorbed layer can be taken away, but the deionization water curtain for flowing there is also the problem for being difficult to overcome：(1) due to flowing
Deionized water depth be difficult to precise control, have impact on the stability of the constraint of plasma during the micro- shot-peening of laser, so as to
Prevent the micro- shot blasting effect of laser is from controlling well.(2) deionized water vaporized at laser spot forms bubble, natural flows
It is difficult to quickly be taken away, so as to have impact on the incidence of post laser pulse, therefore should between two adjacent laser pulses
Stay time enough to purify focus area, have a strong impact on the efficiency of the micro- shot-peening of laser.
The content of the invention
Goal of the invention：For above-mentioned prior art, a kind of micro- shot peening strengthening device of laser of controllable constraint and its side are proposed
Method, improves the micro- shot peening strengthening quality of metal material surface laser, and improves efficiency.
Technical scheme：A kind of micro- shot peening strengthening device of the laser of controllable constraint, including water pipe line, storage tank, hydraulic pump,
Flow control valve, pressure-control valve, breeze way, contraction section, flexible pipe, three-dimensional mobile platform, sample room, semi-transparent semi-reflecting lens, high speed
Camera, focus lamp, laser instrument and computer；
Wherein, the storage tank, hydraulic pump, flow control valve, pressure-control valve, breeze way, contraction section pass through water pipe pipe
Road cascades, then connects the sample room by contraction section, forms bulk loop, and the sample room is fixed on three-dimensional mobile platform
On；Flowmeter and pressure gauge are installed on the water pipe line；The sample room includes sample room casing, the sample room casing
Upper cover plate central authorities be provided with perforate, in perforate cover K9 glass, the fixture of fixed metal sample is provided with the sample room casing；
The focus lamp, semi-transparent semi-reflecting lens, high speed camera are successively set on from bottom to up sample room top and are located at same vertical axis
On, laser instrument is arranged on the semi-transparent semi-reflecting lens side；The high speed camera and three-dimensional mobile platform are all connected with the computer.
Further, also including bath temperature controller, the storage tank is connected with bath temperature controller.
A kind of laser micro- stress peening method of controllable constraint, using deionization water curtain as restraint layer, the deionization
Water curtain is provided by circulation, using the growth of bubble during the micro- shot peening strengthening of high speed camera online observation laser and poly-
Collection situation, makes deionized water circulate in whole circulation using motor belt motor hydrodynamic press pump, by controlling recirculated water
The pressure and flow of deionized water in system, takes away the bubble that near focal point is produced during the micro- shot peening strengthening of laser, and passes through
The pressure for adjusting deionized water improves the effect of the micro- shot-peening of laser.
Further, the temperature constant of deionized water in the circulation is controlled using bath temperature controller.
Beneficial effect：The present invention is a kind of micro- shot peening strengthening devices and methods therefor of laser of controllable constraint, in the micro- spray of laser
During ball, deionized water is circulated in the entire system using motor belt motor hydrodynamic press pump, seen online using high speed camera
Survey the growth of bubble and aggregation situation during the micro- shot peening strengthening of laser, then controlled using flow control valve and flowmeter and
Measurement circulation in deionized water flow, by control circulation in deionized water pressure and flow, so as to
The bubble that near focal point is produced during the micro- shot peening strengthening of laser is taken away, while making deionized water in circulation keep certain
Pressure, its concrete effect is as follows：
(1) by increase deionized water pressure and flow to remove the micro- shot-peening of laser during produce bubble, significantly
The interval time between pulse is reduced, the efficiency of the micro- shot-peening of laser is improve.
(2) deionized water in circulation keeps certain pressure, increased the micro- shot-peening metal sample surface of laser and goes
The rigidity of ion water curtain, improves the effect of contraction of deionization water curtain plasma blast, enhances material surface laser and lures
The shock wave pressure led, the reinforcing effect to improving the micro- shot-peening of laser plays positive role.
(3) the distance between K9 glass and sample are fixed in the micro- shot peening strengthening device of the laser, and deionized water can be
Full of the space between K9 glass and sample in the presence of pressure, so that the constant height of sample surfaces deionization water curtain, carries
The stability of the micro- shot blasting effect of high laser.
Description of the drawings
Fig. 1 is the structural representation of the micro- shot peening strengthening device of laser of controllable constraint of the invention；
Fig. 2 is the sample room structural representation of apparatus of the present invention.
Specific embodiment
The present invention is done below in conjunction with the accompanying drawings further is explained.
As shown in figure 1, a kind of micro- shot peening strengthening device of the laser of controllable constraint, including the water pipe circulated for deionized water
Pipeline 1；For storing the storage tank 2 of deionized water；For to the motor 4 and liquid of deionized water input energy in circulation
Press pump 3；The flow control valve 5 of de-ionized water flow rate in for controlling circulation；Go in for measuring circulation from
The flowmeter 6 of sub- discharge；In for controlling circulation in deionized water pressure pressure-control valve 7；For stably going
The breeze way 8 of ionized water；The contraction section 9 of deionized water speed in for accelerating circulation；For showing circulation
The pressure gauge 10 of middle deionized water pressure；For connecting the flexible pipe 11 of sample room 14 and contraction section 9, and flexible pipe 11 has preferably
Pliability, do not affect sample room 14 to move with three-dimensional mobile platform 12；For driving sample room 14 and metal sample 13 to move
Three-dimensional mobile platform 12；For placing and observing the sample room 14 of metal sample 13, for semi-transparent the half of reflected impulse laser
Anti- mirror 15；The high speed camera 16 of metal sample blibbing state during for observing the micro- shot-peening of laser；For focusing pulse
The focus lamp 17 of laser；For producing the laser instrument 18 of the micro- shot-peening required pulse laser of laser；In for controlling circulation
The bath temperature controller 19 of deionized water temperature；High speed camera is moved, shows and records for controlling three-dimensional mobile platform 12
16 computers 20 for photographing the bubble regime produced during the micro- shot-peening of laser.
As shown in Fig. 2 sample room 14 includes the bolt 14-1 for locking upper cover plate；For high speed camera observation and laser
The K9 glass 14-2 for penetrating；The upper cover plate 14-3 of sealing and installation K9 glass 14-2 for sample room 14；For connecting sample
Room 14 and the hose connection 14-4 of flexible pipe 11；For constituting the sample room casing 14-5 of sample room 14；For installing metal sample
13 fixture 14-7.
Sample room 14 is connected by the hose connection 14-4 of both sides with flexible pipe 11, and flexible pipe 11 is connected with pressure gauge 10,
Pressure gauge 10 is pressed in figure successively with contraction section 9, breeze way 8, water pipe line 1, pressure-control valve 7, flowmeter 6, flow control valve 5
Connection；Flow control valve 5 is connected by water pipe line 1 with hydraulic pump 3, and hydraulic pump 3 is connected with motor 4, and storage tank 2 passes through
Water pipe line 1 is connected with hydraulic pump 3, and bath temperature controller 19 is connected with storage tank 2.
First by metal sample surface grinding process, make surface roughness value less than Ra0.8, be then submerged in entering in alcohol
Row is cleaned by ultrasonic 5 minutes, and cleaning carries out drying and processing after finishing, and absorbed layer 14-6 is coated in into metal sample surface, completes to swash
The early-stage preparations of the micro- shot peening strengthening of light, absorbed layer 14-6 is from the black aluminium foil that thickness is 20 μm.
Sample room 14 is fixed in three-dimensional mobile platform 12, the upper cover plate 14-3 of sample room 14 is opened, by metal sample 13
It is fixed on the fixture 14-7 in sample room 14, adjusts the height of metal sample 13 so as to surface distance upper cover plate 3mm, then will
The upper cover plate 14-3 of sample room 14 bolt 14-1 lock sealings.
Start bath temperature controller 19, make the deionized water in circulation be heated to design temperature, heating-up temperature
Scope is 0～90 DEG C；Changing design temperature can obtain different shot blasting effects.Then start motor 4 to drive the work of hydraulic pump 3
Make, deionized water is circulated in the entire system, by adjusting flow control valve 5 and pressure-control valve 7 flowmeter 6, pressure is made
The flow and pressure of deionized water is setting value in the circulation that table 10 shows.
Then computer 20, high speed camera 16, laser instrument 18 are opened successively, and adjustment high speed camera 16 makes its focusing in metal
The surface of sample 13, adjustment semi-transparent semi-reflecting lens 15 and focus lamp 17 make Laser Focusing on the surface of metal sample 13, make metal sample table
The laser power density in face reaches 1.5GW/cm2More than, three-dimensional mobile platform 12 is controlled by computer 20 and is moved, realize to gold
The category surface diverse location of sample 13 carries out the micro- shot peening strengthening of laser, and records on the computer 20 and show that high speed camera 16 is swashing
The bubble information that the micro- shot peening strengthening process observation of light is arrived.
High speed camera 16 is observed after bubble, controlled using pressure-control valve, flow control valve, flowmeter and pressure gauge
The pressure and flow of deionized water in circulation, by increasing the pressure and flow of deionized water the micro- shot-peening of laser is removed
During produce bubble.Wherein, the flow of deionized water is adjusted to 10～12L/min, and pressure adjusts model in circulation
Enclose for 0.1～15MPa；During the micro- shot peening strengthening of laser, the situation that bubble is produced and removed is observed according to high speed camera, come
Adjustment pressure value, it is better that pressure more air pocket removes effect；Meanwhile, when pressure is less, the pact of deionized water plasma
Beam is weaker, has less facilitation to strengthening the micro- shot peening strengthening of laser；When pressure is larger, deionized water plasma
Constraint is relatively strong, can significantly improve the effect of the micro- shot peening strengthening of laser.
After the completion of aforesaid operations, laser instrument 18, high speed camera 16, motor 4 are closed successively, close bath temperature controller
19, sample room 14 is opened, metal sample 13 is taken out, complete the micro- shot peening strengthening process of whole laser.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (4)
1. the micro- shot peening strengthening device of a kind of laser of controllable constraint, it is characterised in that：Including water pipe line (1), storage tank (2),
Hydraulic pump (3), flow control valve (5), pressure-control valve (7), breeze way (8), contraction section (9), flexible pipe (11), three-dimensional movement are flat
Platform (12), sample room (14), semi-transparent semi-reflecting lens (15), high speed camera (16), focus lamp (17), laser instrument (18) and computer
(20)；
Wherein, the storage tank (2), hydraulic pump (3), flow control valve (5), pressure-control valve (7), breeze way (8), contraction section
(9) cascaded by water pipe line (1), then the sample room (14) is connected by contraction section (9), form bulk loop, the sample
Product room (14) is fixed in three-dimensional mobile platform (12)；Flowmeter (6) and pressure gauge are installed on the water pipe line (1)
(10)；The sample room (14) includes sample room casing (14-5), in the upper cover plate (14-3) of the sample room casing (14-5)
Centre is provided with perforate, covers in K9 glass (14-2), the sample room casing (14-5) in perforate and is provided with fixed metal sample (13)
Fixture (14-7)；The focus lamp (17), semi-transparent semi-reflecting lens (15), high speed camera (16) are successively set on from bottom to up sample
Room (14) top is simultaneously located on same vertical axis, and laser instrument (18) is arranged on the semi-transparent semi-reflecting lens (15) side；The height
Fast camera (16) and three-dimensional mobile platform (12) are all connected with the computer (20).
2. the micro- shot peening strengthening device of laser of a kind of controllable constraint according to claim 1, it is characterised in that：Also include water
Bath temperature controller (19), the storage tank (2) is connected with bath temperature controller (19).
3. the micro- stress peening method of laser of a kind of controllable constraint, it is characterised in that：Using deionization water curtain as restraint layer, institute
State deionization water curtain to provide by circulation, using bubble during the micro- shot peening strengthening of high speed camera online observation laser
Growth and aggregation situation, make deionized water circulate in whole circulation, by control using motor belt motor hydrodynamic press pump
The pressure and flow of deionized water in circulation processed, takes away the gas that near focal point is produced during the micro- shot peening strengthening of laser
Bubble, and the effect of the micro- shot-peening of laser is improved by adjusting the pressure of deionized water.
4. the micro- stress peening method of laser of a kind of controllable constraint according to claim 3, it is characterised in that：Using water-bath
Temperature controller controls the temperature constant of deionized water in the circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001532.0A CN106636607B (en) | 2017-01-03 | 2017-01-03 | A kind of micro- shot peening strengthening devices and methods therefor of the laser of controllable constraint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001532.0A CN106636607B (en) | 2017-01-03 | 2017-01-03 | A kind of micro- shot peening strengthening devices and methods therefor of the laser of controllable constraint |
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| Publication Number | Publication Date |
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| CN106636607A true CN106636607A (en) | 2017-05-10 |
| CN106636607B CN106636607B (en) | 2018-04-17 |
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Cited By (8)
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| CN108546819A (en) * | 2018-07-19 | 2018-09-18 | 西安天瑞达光电技术股份有限公司 | Between a kind of laser impact intensified processing |
| CN109423550A (en) * | 2017-09-04 | 2019-03-05 | 丰田自动车株式会社 | Component manufacturing method and component |
| CN109454334A (en) * | 2018-10-24 | 2019-03-12 | 西安交通大学 | A kind of medium-temperature reinforced system and method for laser-impact |
| CN109854548A (en) * | 2019-03-12 | 2019-06-07 | 中国人民解放军空军工程大学 | A kind of oil path control system of high temperature oil restraint layer |
| CN111141633A (en) * | 2020-02-14 | 2020-05-12 | 浙江工业大学 | Material surface cavitation resistance performance test method based on laser driving |
| US20220074911A1 (en) * | 2019-02-07 | 2022-03-10 | Thyssenkrupp Industrial Solutions Ag | Method for handling melt samples in a steelworks laboratory, and steelworks laboratory |
| CN114273790A (en) * | 2022-02-15 | 2022-04-05 | 山东大学 | Femtosecond laser processing device and method for etching gallium nitride in liquid phase |
| US12123862B2 (en) * | 2019-02-07 | 2024-10-22 | thyssenkrupp Polysius GmbH | Method for handling melt samples in a steelworks laboratory, and steelworks laboratory |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109423550A (en) * | 2017-09-04 | 2019-03-05 | 丰田自动车株式会社 | Component manufacturing method and component |
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| US12123862B2 (en) * | 2019-02-07 | 2024-10-22 | thyssenkrupp Polysius GmbH | Method for handling melt samples in a steelworks laboratory, and steelworks laboratory |
| CN109854548A (en) * | 2019-03-12 | 2019-06-07 | 中国人民解放军空军工程大学 | A kind of oil path control system of high temperature oil restraint layer |
| CN111141633A (en) * | 2020-02-14 | 2020-05-12 | 浙江工业大学 | Material surface cavitation resistance performance test method based on laser driving |
| CN114273790A (en) * | 2022-02-15 | 2022-04-05 | 山东大学 | Femtosecond laser processing device and method for etching gallium nitride in liquid phase |
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| CN106636607B (en) | 2018-04-17 |
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