CN112337703B - Laser shock strengthening restraining water device and implementation method thereof - Google Patents
Laser shock strengthening restraining water device and implementation method thereof Download PDFInfo
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- CN112337703B CN112337703B CN202011114561.6A CN202011114561A CN112337703B CN 112337703 B CN112337703 B CN 112337703B CN 202011114561 A CN202011114561 A CN 202011114561A CN 112337703 B CN112337703 B CN 112337703B
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- water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/14—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
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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
Abstract
The invention belongs to the technical field of part surface treatment, and relates to a laser shock peening restraining water device and an implementation method thereof; comprises a spray pipe (1), a flexible pipe (2), a control valve (3), a water pump (4), a water storage barrel (5) and a water purifier (6); the spray pipe (1) consists of a pipe body (9) and a spray nozzle (10), the spray nozzle moves synchronously with the part and sprays water flow on the surface of the part in situ to form a stable and uniform constrained water film, and the spray nozzle does not need additional robot clamping, so that the complexity of equipment is reduced; before each laser pulse is emitted, the pause of the robot can improve the stability of the constraint water film and improve the quality of laser shock strengthening; the spray pipe is connected with the water pump through the flexible pipe, so that the robot for clamping the parts has good freedom of movement.
Description
Technical Field
The invention belongs to the technical field of part surface treatment, and relates to a laser shock peening restraining water device and an implementation method thereof.
Background
With the development of the aviation industry, the performance of aircrafts is gradually improved. In the aspect of structural design, more and more aircraft key parts are manufactured in an integral structure type, and the dual purposes of weight reduction and high reliability are achieved. However, the overall structure usually has some curved surfaces, narrow inner cavities, grooves and other structures, and in the machining process, the problems of structural interference, difficulty in machining and the like are easily caused, so that the machining quality of parts is affected.
The laser shock peening is a novel surface strengthening technology, and utilizes laser induction to generate plasma shock waves to enable the surface of a material to generate plastic deformation to form a residual pressure stress layer and a tissue strengthening layer, so that the overall fatigue performance of a part is improved. In the process of implementing the process, a layer of restraining water film is required to be formed on the surface of the part, the acting force direction of the laser-induced plasma shock wave is restrained by utilizing the surface tension of water, and the amplitude and time of the acting force are improved, so that the water film is required to be uniformly spread on the surface of the part, the thickness is uniform, and the flow speed is stable. At present, the spreading mode of the water film on the part is mainly divided into two modes: the first is that the spray pipe is fixed; the other is that the nozzle is held by a robot for movement. In the two modes, the spray pipe is not in contact with the part, and water jet formed by the spray opening is sputtered to the surface of the part and flows along the surface of the part under the action of gravity, so that a water film is formed. The first mode is suitable for a simple plane and can obtain better water film quality, but for a curved surface, a narrow inner cavity or a semi-closed groove and the like, water jet generated by a nozzle is influenced by structural interference, water blockage or shielding phenomenon of the water jet is easily generated, and a stable and uniform water film is difficult to form on the surface of a part. The structure applicability of the second mode is better, the structure applicability is not only suitable for simple planes, but also suitable for curved surfaces, narrow inner cavities or semi-closed grooves and other parts, but two robots are required to be equipped, so that parts and the spray pipe are respectively clamped, the cost of equipment is increased, and the complexity of process programming is improved.
Disclosure of Invention
The purpose of the invention is: the laser shock strengthening water restraining device and the implementation method thereof can solve the problems of instability and non-uniformity of the restraining water film with a curved surface, a narrow inner cavity or a semi-closed groove and other complex structures without an additional robot, improve the quality of the restraining water film and meet the requirement of large-scale production.
The technical scheme of the invention is as follows:
a laser shock peening restraint water installation which characterized in that: the device consists of a spray pipe 1, a flexible pipe 2, a control valve 3, a water pump 4, a water storage barrel 5 and a water purifier 6; the right end of the spray pipe 1 is communicated with the left end of the flexible pipe 2, and the spray pipe 1 is fixed on the surface of the part 8; the spray pipe 1 is provided with a plurality of spray nozzles, and the spray nozzles are spaced from a red light indication spot 5 of an area to be strengthened ～ 20mm, the nozzle is positioned at the upstream of the area to be strengthened; the part 8 is clamped by the robot 7 and moves; the flexible pipe 2, the water pump 4, the water storage barrel 5 and the water purifier 6 are connected in sequence.
The spray pipe 1 consists of a pipe body 9 and a spray opening 10, the section of the pipe body 9 is rectangular, a cavity is formed in the pipe body 9, a water inlet is formed in the right side of the pipe body 9, and a closed blind end is formed in the left side of the pipe body; the front of the tube body is provided with a plurality of nozzles 10.
The number of the nozzles 10 is b, the distance between every two adjacent nozzles 10 is h, and the water flow of the nozzles 10 is e; the correlation between nozzle parameters is as follows:
TABLE 1 correlation between nozzle parameters
Note: total water flow 0.1m 3 /min～3m 3 Min, the water pressure is 0.1MPa to 2MPa, and b is more than or equal to 100 and more than or equal to 4.
The distance h between two adjacent nozzles 10 is 1-30 mm.
The shape of the nozzle 10 is circular, oval, square or rectangular, and the area S is 0.01-25 mm 2 。
The height c between the center of the nozzle 10 and the bottom plane of the pipe body 9 is 0.1-10 mm.
The included angle theta between the water jet direction of the nozzle 10 and the bottom plane of the pipe body 9 is 0-75 DEG
The cross section of the flexible pipe 2 is annular, the wall thickness is 0.5 mm-1 mm, and the outer diameter is phi 5 mm-phi 10 mm.
An implementation method of a laser shock peening restraining water device is characterized in that:
1) fixing the part 8 on the robot 7 through a clamp;
2) fixing the spray pipe 1 on the surface of the part 8, and ensuring that the included angle theta between the normal of the area to be strengthened on the surface of the part 8 and the ground is +90 degrees to-45 degrees by adjusting the robot 7;
3) the water flow is adjusted to be 0.1m by the control valve 3 3 /min～3m 3 Min, adjusting a water pump 4 to ensure that the pressure is kept between 0.1 and 2 MPa;
4) after the water flow of the nozzle of the spray pipe 1 is stable, starting the robot 7, moving the part 8 through the movement of the robot 7, and emitting laser pulses at each 1 point to be strengthened to realize laser shock strengthening of the point to be strengthened;
5) and after the motion path of the robot is completed, the laser is turned off, the spray pipe 1 is detached, and the part 8 is taken down.
The movement speed of the flange of the robot 7 is 50-300 mm/s, and the movement stops for 0.3-2 s at each 1 point to be strengthened.
The invention has the advantages that:
firstly, the nozzle moves synchronously with the part and sprays water flow on the surface of the part in situ to form a stable and uniform constraint water film, the nozzle does not need additional robot clamping, and the complexity of the equipment is reduced.
Secondly, before each laser pulse is emitted, the pause of the robot can improve the stability of the constraint water film and improve the quality of laser shock peening.
And thirdly, the spray pipe is connected with the water pump through a flexible pipe, so that the robot for clamping the parts has good freedom of movement.
Drawings
FIG. 1 is a schematic view of a water containment system according to the present invention
FIG. 2 is a front view of the nozzle 1 of the present invention
FIG. 3 is a cross-sectional view of the nozzle 1 of the present invention at the nozzle 10
Detailed Description
A laser shock peening restriction water device is composed of a spray pipe 1, a flexible pipe 2, a control valve 3, a water pump 4, a water storage barrel 5 and a water purifier 6; the right end of the spray pipe 1 is communicated with the left end of the flexible pipe 2, a plurality of spray nozzles are arranged on the spray pipe 1, and the spray pipe 1 has certain flexibility and can be fixed on the surface of the part 8 by a sucker, a double-sided adhesive tape or glue; red light indication spot 5 of the spout 1 from the area to be intensified ～ 20mm, the nozzle is positioned at the upstream of the area to be strengthened; the part 8 is clamped by the robot 7 and moves; the right end of the flexible pipe 2 is communicated with the left end of the water pump 4, and the water flow can be adjusted through the control valve 3; the right end of the water pump 4 is communicated with the water outlet of the water storage barrel 5, and the water flow can be adjusted through a valve; the water inlet of the water storage barrel 5 is communicated with the water outlet of the water purifier 6, and the water flow can be adjusted by a valve to be largeSmall; the water inlet of the water purifier 6 is communicated with a tap water pipe.
The spray pipe 1 consists of a pipe body 9 and a spray opening 10, the section of the pipe body 9 is rectangular, a cavity is arranged in the pipe body 9, a water inlet is formed in the right side of the pipe body 9, and a closed blind end is formed in the left side of the pipe body; the front surface of the pipe body 9 is provided with a plurality of nozzles 10, the number of the nozzles 10 is b, the distance between two adjacent nozzles 10 is h, and the water flow of the nozzles 10 is e; the correlation between nozzle parameters is as follows:
TABLE 1 correlation between nozzle parameters
Note: total water flow 0.1m 3 /min～3m 3 The water pressure is 0.1MPa to 2MPa, and b is more than or equal to 100 and more than or equal to 4.
The material of the spray pipe 1 is one of polyvinyl chloride, polyurethane, polyamide, ethylene propylene diene monomer, oil-filled styrene-butadiene rubber, natural rubber and synthetic rubber; the length L of the pipe body 9 is 10-1000 mm, the height M is 1-30 mm, the width N is 1-30 mm, and the wall thickness of the pipe body 9 is 1-5 mm; generally, the material is prepared by one method of calendaring, extrusion molding, compression molding and additive manufacturing.
The shape of the nozzle 10 is circular, oval, square or rectangular, and the area S is 0.01-25 mm 2 (ii) a The distance h between every two adjacent nozzles 10 is 1-30 mm; the nozzle 10 is manufactured by a laser drilling method. The included angle theta between the water jet direction of the nozzle 10 and the bottom plane of the pipe body 9 is 0-75 degrees; the height c between the center of the nozzle 10 and the bottom plane of the pipe body 9 is 0.1-10 mm.
The flexible pipe 2 is made of polyvinyl chloride, polyurethane, polyamide, ethylene propylene diene monomer, oil-filled styrene-butadiene rubber, natural rubber and synthetic rubber. The cross section of the flexible pipe 2 is annular, the wall thickness is 0.5 mm-1 mm, and the outer diameter is phi 5 mm-phi 10 mm. The length of the flexible tube 2 should be such that the flexible tube 2 does not tear or break within the range of movement of the robot.
The method of claim 1, wherein the water-jet device is a laser shock peening device, the method comprises:
1) fixing the part 8 on the robot 7 through a clamp;
2) according to the position and shape characteristics of the area to be strengthened, the spray pipe 1 is fixed on the surface of the part 8, and the included angle theta between the normal of the area to be strengthened on the surface of the part 8 and the ground is ensured to be +90 degrees to-45 degrees by adjusting the robot 7;
3) the water flow is adjusted to be 0.1m by the valve 4 3 /min～3m 3 Min, adjusting a water pump to ensure that the pressure is kept between 0.1 and 2 MPa;
4) after the water flow of the nozzle of the spray pipe 1 is stable, starting the robot 7, moving the part 8 through the movement of the robot 7, enabling the movement speed of a flange plate of the robot 7 to be 50-300 mm/s, and emitting laser pulses after each 1 point to be strengthened is paused for 0.3-2 s to realize laser shock strengthening of the point to be strengthened;
5) and after the motion path of the robot is completed, the laser is turned off, the spray pipe 1 is detached, and the part 8 is taken down.
The working principle of the invention is as follows:
the invention provides a method for restraining water film spreading, wherein a spray pipe is directly fixed near a to-be-strengthened area on the surface of a part, the spray pipe moves along with the part, only one robot is needed to clamp the part, the spray pipe is not needed to clamp the robot, the number of robots is reduced, the cost is reduced, and the programming difficulty of the robot is also reduced.
In addition, the spray pipe has certain flexibility, consists of a plurality of spray nozzles, can be bent according to the shape of the area to be strengthened and is fixed by a sucker, double-sided adhesive tape or glue, so that a large-area, stable and uniform water film is formed on the area to be strengthened on the surface of the part.
Thirdly, before each laser pulse is emitted, the pause of the robot can improve the stability of the constraint water film and improve the quality of laser shock peening.
Fourthly, the spray pipe is connected with the water pump through a flexible pipe, and the robot for clamping the parts is ensured to have good freedom of movement.
Example 1
A laser shock peening restriction water device is composed of a spray pipe 1, a flexible pipe 2, a control valve 3, a water pump 4, a water storage barrel 5 and a water purifier 6; the right end of the spray pipe 1 is communicated with the left end of the flexible pipe 2, 10 spray nozzles are arranged on the spray pipe 1, and the spray pipe has certain flexibility and can be fixed on the surface of the part 8 through double-sided adhesive tape adhesion; the distance between the nozzle of the spray pipe 1 and the red light indication spot of the area to be strengthened is 5mm, and the nozzle is positioned at the upstream of the area to be strengthened; the part 8 is clamped by the robot 7 and moves; the right end of the flexible pipe 2 is communicated with the left end of the water pump 4, and the water flow can be adjusted through the control valve 3; the right end of the water pump 4 is communicated with the water outlet of the water storage barrel 5, and the water flow can be adjusted through a valve; a water inlet of the water storage barrel 5 is communicated with a water outlet of the water purifier 6, and the water flow can be adjusted through a valve; the water inlet of the water purifier 6 is communicated with a tap water pipe.
The method of claim 1, wherein the water-jet device is a laser shock peening device, the method comprises:
1) fixing the part 8 on the robot 7 through a clamp;
2) fixing the spray pipe 1 on the surface of the part 8 according to the position and shape characteristics of the area to be strengthened, and ensuring that the included angle theta between the normal of the area to be strengthened on the surface of the part 8 and the ground is +90 degrees by adjusting the robot 7;
3) the water flow is adjusted to be 0.1m by the valve 4 3 Min, adjusting a water pump to ensure that the pressure is kept at 0.1 MPa;
4) after the water flow of a nozzle of the spray pipe 1 is stable, starting the robot 7, moving the part 8 through the movement of the robot 7, enabling the movement speed of a flange plate of the robot 7 to be 50mm/s, and emitting laser pulses after each 1 point to be strengthened is paused for 0.3s to realize laser shock strengthening of the point to be strengthened;
5) and after the motion path of the robot is completed, the laser is turned off, the spray pipe 1 is detached, and the part 8 is taken down.
The flexible pipe is made of polyvinyl chloride, the cross section of the flexible pipe is annular, the wall thickness is 1mm, and the outer diameter is phi 10 mm. The maximum distance of movement of the region to be reinforced is 0.5m, and the length of the flexible pipe 2 is 1 m.
Example 2
And adjusting a water pump to ensure that the pressure is kept at 2MPa, wherein the flexible pipe 2 is made of polyvinyl chloride, the movement speed of a flange of the robot 7 is 300mm/s, and the robot stops for 2s at each 1 point to be strengthened.
Claims (10)
1. A laser shock peening restraint water installation which characterized in that: comprises a spray pipe (1), a flexible pipe (2), a control valve (3), a water pump (4), a water storage barrel (5) and a water purifier (6); the right end of the spray pipe (1) is communicated with the left end of the flexible pipe (2), and the spray pipe (1) is fixed on the surface of the part (8) through a sucker, a double-sided adhesive tape or glue; the spray pipe (1) is provided with a plurality of nozzles which can be bent according to the shape of the area to be strengthened; the distance between the nozzle and the red light indication spot of the area to be strengthened is 5-20 mm, and the nozzle is positioned at the upstream of the area to be strengthened; the part (8) is clamped by the robot (7) and moves; the flexible pipe (2), the water pump (4), the water storage barrel (5) and the water purifier (6) are connected in sequence.
2. The laser shock peening confining water device as recited in claim 1, wherein: the spray pipe (1) consists of a pipe body (9) and a spray opening (10), the section of the pipe body (9) is rectangular, a cavity is formed in the pipe body (9), a water inlet is formed in the right side of the pipe body (9), and a closed blind end is formed in the left side of the pipe body; the front of the tube body is provided with a plurality of nozzles (10).
3. The laser shock peening confining water device as recited in claim 2, wherein: the number of the nozzles (10) is b, the distance between every two adjacent nozzles (10) is h, and the water flow of the nozzles (10) is e; the correlation between nozzle parameters is as follows:
TABLE 1 correlation between nozzle parameters
Note: total water flow 0.1m 3 /min～3m 3 Min, the water pressure is 0.1MPa to 2MPa, and b is more than or equal to 100 and more than or equal to 4.
4. The laser shock peening confining water device as recited in claim 2, wherein: the distance h between two adjacent nozzles (10) is 1-30 mm.
5. The laser shock peening confining water device as recited in claim 2, wherein: the shape of the nozzle (10) is circular, oval, square or rectangular, and the area S is 0.01-25 mm 2 。
6. The laser shock peening confining water device as recited in claim 2, wherein: the height c between the center of the nozzle (10) and the bottom plane of the pipe body (9) is 0.1-10 mm.
7. The laser shock peening confining water device as recited in claim 2, wherein: the included angle theta between the water jet direction of the nozzle (10) and the bottom plane of the pipe body (9) is 0-75 degrees.
8. The laser shock peening confining water device as recited in claim 1, wherein: the cross section of the flexible pipe (2) is annular, the wall thickness is 0.5 mm-1 mm, and the outer diameter is phi 5 mm-phi 10 mm.
9. The method for implementing the laser shock peening water confining device as claimed in any one of claims 1 to 8, wherein:
1) fixing the part (8) on the robot (7) through a clamp;
2) fixing the spray pipe (1) on the surface of the part (8), and ensuring that the included angle theta between the normal of the area to be strengthened on the surface of the part (8) and the ground is +90 degrees to-45 degrees by adjusting the robot (7);
3) the water flow is adjusted to be 0.1m by the control valve (3) 3 /min～3m 3 Min, adjusting a water pump (4) to ensure that the pressure is kept between 0.1MPa and 2 MPa;
4) after the water flow of a nozzle of the spray pipe (1) is stable, starting the robot (7), moving the part (8) through the movement of the robot (7), and emitting laser pulses at each 1 point to be strengthened to realize laser shock strengthening of the point to be strengthened;
5) and after the movement path of the robot is finished, the laser is turned off, the spray pipe (1) is detached, and the part (8) is taken down.
10. The method for implementing the laser shock peening water restraining device of claim 9, wherein: the movement speed of a flange plate of the robot (7) is 50-300 mm/s, and the movement stops for 0.3-2 s at each 1 point to be strengthened.
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| CN202011114561.6A CN112337703B (en) | 2020-10-16 | 2020-10-16 | Laser shock strengthening restraining water device and implementation method thereof |
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| CN112337703B true CN112337703B (en) | 2022-08-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7906746B2 (en) * | 2005-11-30 | 2011-03-15 | General Electric Company | Laser shock peening system with time-of-flight monitoring |
| CN203076788U (en) * | 2012-12-24 | 2013-07-24 | 中国科学院沈阳自动化研究所 | Laser shock strengthening device of blisk |
| CN103205546B (en) * | 2013-02-04 | 2015-09-09 | 中国航空工业集团公司北京航空制造工程研究所 | The method stablizing moisture film is obtained in a kind of laser-impact process blisk |
| CN104368472B (en) * | 2014-11-24 | 2017-01-25 | 广西大学 | Flight spraying device and atomization method achieved through flight spraying device |
| CN206061685U (en) * | 2016-08-23 | 2017-04-05 | 南平正大欧瑞信生物科技开发有限公司 | A kind of rainer of proportion of crop planting canopy |
| CN108094387A (en) * | 2018-02-08 | 2018-06-01 | 朱利松 | One kind administers adjustable pesticide spraying device for agricultural |
| CN108902105A (en) * | 2018-07-09 | 2018-11-30 | 谢亚平 | A kind of agricultural pesticide sprayer |
| CN211079281U (en) * | 2019-07-09 | 2020-07-24 | 西安天瑞达光电技术股份有限公司 | Laser shock peening device |
| CN211381199U (en) * | 2019-07-12 | 2020-09-01 | 佛山市顺德区美的洗涤电器制造有限公司 | A dish washer that is used for spout subassembly of dish washer and has it |
| CN210869152U (en) * | 2019-10-01 | 2020-06-30 | 泗洪县水利工程处 | Novel irrigation device |
| CN111084174A (en) * | 2020-01-10 | 2020-05-01 | 重庆市开州区星宸农业开发有限公司 | A spout medicine device for fruit tree is planted |
| CN111449602B (en) * | 2020-03-24 | 2021-08-06 | 佛山市顺德区美的洗涤电器制造有限公司 | Spray lance, connecting piece, connector, spray lance assembly and belt cleaning device |
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