CN210974824U - Underwater particle vacuole coupled material strengthening device - Google Patents
Underwater particle vacuole coupled material strengthening device Download PDFInfo
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- CN210974824U CN210974824U CN201921944178.6U CN201921944178U CN210974824U CN 210974824 U CN210974824 U CN 210974824U CN 201921944178 U CN201921944178 U CN 201921944178U CN 210974824 U CN210974824 U CN 210974824U
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Abstract
A material strengthening device for underwater particle cavitation coupling comprises a laser, a lens group, a water tank, a target material and a three-dimensional moving platform, wherein laser beams formed by laser emitted by the laser after passing through the lens group are focused above the target material, the target material is placed on an objective table in the water tank, and the water tank is arranged on the three-dimensional moving platform; the laser beam is vertical to the surface of the target, the focus of the laser beam is positioned in strengthening liquid filled in the water tank, the distance between the focus and the upper surface of the target is 0.1-2 mm, and the strengthening liquid is formed by uniformly mixing 10-100 nm silicon carbide particles and water according to the mass ratio of 1: 100-1: 200. The device has simple structure and easy operation, and can meet the strengthening requirement on light alloy materials.
Description
Technical Field
The utility model relates to a device is reinforceed to the material, concretely relates to device is reinforceed to material of particle vacuole coupling under water belongs to material surface and reinforces technical field.
Background
Under the development trend of energy conservation, consumption reduction and emission reduction, the light alloy is one of metal materials with the greatest development prospect as the metal material with the lightest density. In recent years, with the continuous development of research and development technologies, light alloy materials not only play an important role in the research and development of aerospace, weaponry and the like, but also are widely applied to the fields of civil products such as automobiles, communication equipment, electronic products and the like. Although various performance indexes of the light alloy material are unprecedentedly developed, the problem of low absolute strength still exists, and the application of the light alloy material is limited to a certain extent.
The existing alloy material strengthening method mainly utilizes laser to act on liquid, when laser energy reaches a breakdown threshold value of a liquid medium, the liquid can be broken down to generate a plasma cavity, the plasma cavity continues to absorb the laser energy and then rapidly expands to form a cavity, when the cavity moves near a solid-liquid interface, due to the pressure difference between two sides of the cavity, the cavity can generate a wall-approaching effect, and a mechanical effect is formed on the surface of the material along with the action of shock waves and water jet in the cavity pulsation collapse process. Although this strengthening method can improve the strength of the alloy material to some extent, the strengthening effect is not ideal.
Disclosure of Invention
To the problem that above-mentioned prior art exists, the utility model provides a device is reinforceed to material of particle vacuole coupling under water, the device simple structure, easily operation can satisfy the intensive requirement to light alloy material, improves its absolute strength remarkably.
In order to achieve the above object, the present invention provides a material strengthening device for underwater particle vacuole coupling, which comprises a laser, a lens set, a water tank, a target material and a three-dimensional moving platform, wherein laser beams emitted by the laser and formed after passing through the lens set are focused above the target material, the target material is placed on an objective table in the water tank, and the water tank is arranged on the three-dimensional moving platform;
the laser beam is vertical to the surface of the target, the focus of the laser beam is positioned in strengthening liquid filled in the water tank, the distance between the focus and the upper surface of the target is 0.1-2 mm, and the strengthening liquid is formed by uniformly mixing 10-100 nm silicon carbide particles and water according to the mass ratio of 1: 100-1: 200.
Furthermore, the lens group takes the laser as a starting point and sequentially comprises a concave lens, a convex lens, a total reflection lens and a focusing lens from near to far.
Further, the laser beam is high-energy laser with the focal length of more than 1500 mJ; the target is light alloy; the silicon carbide particles are hard ceramic powder; the water tank is made of resin plastics or glass; the water is tap water or purified water.
The utility model also discloses a material strengthening method of particle vacuole coupling under water, including following step:
(1) uniformly mixing the strengthening liquid in the water tank with 10-100 nm silicon carbide particles and water in a ratio of 1: 100-1: 200;
setting laser power, installing a lens group, opening a laser, adjusting the distance between a laser beam focusing point and the upper surface of the target material, and keeping the focal point vertical to the surface of the target material;
(2) and starting the three-dimensional moving platform to move according to a set route, and moving a water tank arranged at the upper end of the three-dimensional moving platform along with the three-dimensional moving platform in the same way, so that particle cavitation is induced at different positions of the target by the focus, and impact strengthening is performed on the target.
Further, the lens group in the step (1) sequentially comprises a concave lens, a convex lens, a total reflection lens and a focusing lens from near to far with the laser as a starting point.
Further, the laser beam in the step (1) is high-energy laser with the focus of more than 1500 mJ; the distance between the focus and the target is 1 mm; the strengthening liquid is prepared by uniformly mixing 20nm silicon carbide particles and water in a ratio of 1: 100.
Further, in the step (2), when the particle vacuoles impact-strengthen the target material, the silicon carbide particles impact the target material at a speed of more than 150 m/s.
Further, in the step (2), the moving route of the target in the water tank is continuously distributed between the regular U-shaped and the inverted U-shaped.
The utility model focuses the laser beam in the strengthening liquid in the water tank through the lens group, the high-energy laser generates the cavitation bubble group at the focus, the cavitation bubble has great energy, and great speed and pressure can be generated; the silicon carbide nano particles uniformly mixed in the strengthening liquid are wrapped by the vacuole, when the vacuole wraps and carries the nano particles to impact the target at a high speed, the vacuole is collapsed, and a high temperature of more than 1500 ℃ is generated in a collapse area to rapidly heat and radiate the target, so that a residual thermal stress layer is formed, the target is strengthened, the device has a simple structure, is easy to operate, meets the strengthening requirement on a light alloy material, and obviously improves the absolute strength of the device.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a relative movement route diagram of the laser beam focal point on the target surface.
In the figure: 1. the device comprises a laser, 2, a lens group, 3, a water tank, 4, a target, 5, a three-dimensional moving platform, 6, a laser beam, 7, an objective table, 8, a focal point, 9, strengthening liquid, 10, silicon carbide particles, 11, a concave lens, 12, a convex lens, 13, a total reflection mirror, 14, a focusing lens, 15 and particle vacuoles.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, an underwater particle cavitation coupling material strengthening device includes a laser 1, a lens assembly 2, a water tank 3, a target 4 and a three-dimensional moving platform 5, wherein laser beams 6 formed by laser emitted by the laser 1 passing through the lens assembly 2 are focused above the target 4, the target 4 is placed on an object stage 7 in the water tank 3, and the water tank 3 is arranged on the three-dimensional moving platform 5;
the laser beam 6 is vertical to the surface of the target 4, the focus 8 of the laser beam 6 is positioned in a strengthening liquid 9 filled in the water tank 3, the distance between the focus 8 and the upper surface of the target 4 is 0.1-2 mm, and the strengthening liquid 9 is formed by uniformly mixing 10-100 nm silicon carbide particles 10 and water in a mass ratio of 1: 100-1: 200.
The lens group 2 is composed of a concave lens 11, a convex lens 12, a total reflection mirror 13 and a focusing lens 14 in sequence from the near to the far with the laser 1 as a starting point.
In order to ensure that the temperature of particle vacuoles 15 generated by the laser beam 6 in the strengthening liquid 9 meets the strengthening requirement, the laser beam 6 is high-energy laser with the wavelength of more than 1500 mJ;
the target 4 is light alloy;
preferably, the silicon carbide particles 10 are hard ceramic powder; the water tank 3 is made of resin plastics or glass; the water is tap water or purified water.
The three-dimensional moving platform 5 in this application can for what exists can satisfy the moving needs among the prior art moving platform, three-dimensional moving platform 5 drives basin 3 can be simultaneously or respectively in X direction be horizontal, Y direction be vertical and Z direction be axial motion.
A method for reinforcing underwater particle vacuole coupled materials comprises the following steps:
(1) uniformly mixing the strengthening liquid 9 in the water tank 3 by adopting 10-100 nm silicon carbide particles 10 and water according to the mass ratio of 1: 100-1: 200;
setting laser power, installing a lens group 2, opening a laser 1, adjusting the distance between a focal point of a laser beam 6 and a target 4, and keeping a focal point 8 vertical to the surface of the target 4;
(2) the three-dimensional moving stage 5 is started to move along a set path, the water tank 3 provided at the upper end of the three-dimensional moving stage moves in the same manner, the focus 8 induces particle cavitation 10 at different positions of the target 4, and the target 4 is subjected to impact strengthening.
In the step (1), the lens group 2 takes the laser 1 as a starting point and sequentially comprises a concave lens 11, a convex lens 12, a total reflection mirror 13 and a focusing lens 14 from near to far.
In order to ensure that the temperature of particle vacuoles 15 generated by the laser beam 6 in the strengthening liquid 9 meets the strengthening requirement, the laser beam 6 in the step (1) is high-energy laser with the wavelength of more than 1500 mJ; and the distance between the focal spot 8 and the target 4 is 1 mm.
The strengthening liquid 9 is formed by uniformly mixing 20nm silicon carbide particles 10 and water in a mass ratio of 1:100, and is favorable for providing better bonding particles for vacuoles.
In order to achieve better strengthening effect, in the step (2), when the particle vacuoles 15 carry out impact strengthening on the target material, the silicon carbide particles 10 impact the target material 4 at a speed of more than 150 m/s.
As shown in fig. 2, in order to ensure that the target 4 is strengthened uniformly, in step (2), the moving path of the target 4 in the water tank 3 is a continuous distribution between the regular U shape and the inverted U shape.
Example (b):
taking magnesium-aluminum alloy as a test target, measuring various performances of the magnesium-aluminum alloy before strengthening, applying a load of 2N to the magnesium-aluminum alloy, and obtaining the surface micro Vickers hardness of the magnesium-aluminum alloy to be 75.2 HV;
the magnesium-aluminum alloy is strengthened according to the material strengthening method in the application, after the strengthening is finished, the properties of the strengthened magnesium-aluminum alloy are measured again, 2N load is applied to the strengthened magnesium-aluminum alloy, the surface micro Vickers hardness of the strengthened magnesium-aluminum alloy is 148.7HV on the premise that other properties are not reduced, and the absolute strength of the light alloy material is remarkably improved.
Claims (3)
1. A material strengthening device for underwater particle cavitation coupling comprises a laser (1), a lens group (2), a water tank (3), a target material (4) and a three-dimensional moving platform (5), wherein laser beams (6) formed by laser emitted by the laser (1) after passing through the lens group (2) are focused above the target material (4), the target material (4) is placed on an objective table (7) in the water tank (3), and the water tank (3) is arranged on the three-dimensional moving platform (5);
the method is characterized in that a laser beam (6) is vertical to the surface of a target (4), a focus (8) of the laser beam (6) is positioned in a strengthening liquid (9) filled in a water tank (3), the distance between the focus (8) and the upper surface of the target (4) is 0.1-2 mm, and the strengthening liquid (9) is formed by uniformly mixing 10-100 nm silicon carbide particles (10) and water in a mass ratio of 1: 100-1: 200.
2. The underwater particle vacuole coupled material strengthening device of claim 1, wherein the lens group (2) comprises a concave lens (11), a convex lens (12), a total reflection mirror (13) and a focusing lens (14) from the near to the far in sequence with the laser (1) as a starting point.
3. An underwater particle vacuole coupled material enhancement device according to claim 1 or 2, characterized in that the laser beam (6) is a high energy laser of more than 1500 mj; the target (4) is a light alloy; the silicon carbide particles (10) are hard ceramic powder; the water tank (3) is made of resin plastics or glass; the water is tap water or purified water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921944178.6U CN210974824U (en) | 2019-11-12 | 2019-11-12 | Underwater particle vacuole coupled material strengthening device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921944178.6U CN210974824U (en) | 2019-11-12 | 2019-11-12 | Underwater particle vacuole coupled material strengthening device |
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| CN210974824U true CN210974824U (en) | 2020-07-10 |
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| CN201921944178.6U Expired - Fee Related CN210974824U (en) | 2019-11-12 | 2019-11-12 | Underwater particle vacuole coupled material strengthening device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110777250A (en) * | 2019-11-12 | 2020-02-11 | 徐州工程学院 | Underwater particle vacuole coupled material strengthening device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110777250A (en) * | 2019-11-12 | 2020-02-11 | 徐州工程学院 | Underwater particle vacuole coupled material strengthening device and method |
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