An electro-induced liquid metal empowered abrasive liquid polishing method for the inner wall surface of a flow channel

Abstract

The present application discloses an electro-induced liquid metal empowered abrasive liquid polishing method for the inner wall surface of a flow channel, belonging to the technical field of polishing technology. By utilizing the collision and impact on the abrasive grains in the advancing direction and the turbulent disturbance generated at the tail during the reciprocating movement of the liquid metal along the flow channel filled with the abrasive liquid under the induction of an electric field, kinetic energy is applied to the abrasive grains, and the inner wall surface of the flow channel is polished by the empowered abrasive grains. By adopting the electro-induced liquid metal empowered abrasive liquid polishing method for the inner wall surface of a flow channel of the present application, the polishing problem of the flow channel can be effectively solved.

Description

Technical Field

[0001] The present application relates to the field of polishing technology. More specifically, it particularly relates to an electro-induced liquid metal empowered abrasive liquid polishing method for the inner wall surface of a flow channel. Background Art

[0002] The surface roughness of the inner wall surface of the flow channel directly affects the flow performance of the gas or liquid passing through the flow channel. Usually, the inner wall surface of the flow channel needs to be polished to reduce the surface roughness and improve the flow performance of the gas or liquid.

[0003] Commonly used polishing methods for the inner wall surface of the flow channel include abrasive flow polishing (such as: CN110370093A), chemical polishing (such as: CN110216527A), electro-chemical polishing, magnetic-assisted abrasive flow polishing (such as: CN105922125A), ultrasonic-assisted abrasive flow polishing, etc.

[0004] However, in abrasive flow polishing, there are pressure and flow rate decays with the increase of the polishing distance and the number of flow channel passages, and the flow characteristics of the polishing medium are affected by the flow channel configuration, resulting in local energy losses. It is very difficult to ensure the consistency of the polishing quality.

[0005] For other chemical, electro-chemical polishing, magnetic-assisted, and ultrasonic-assisted abrasive flow polishing, there are problems in electrode / magnetic pole layout, waste liquid cleaning, and control of polishing quality consistency. Summary of the Invention

[0006] The purpose of the present application is to propose an electro-induced liquid metal empowered abrasive liquid polishing method for the inner wall surface of a flow channel in view of the deficiencies of the above-mentioned prior art.

[0007] Technical Solution of the Present Application:

[0008] An electro-induced liquid metal empowered abrasive liquid polishing method for the inner wall surface of a flow channel, which utilizes the kinetic energy exerted on the abrasive grains in the traveling direction during the reciprocating movement of the liquid metal along the flow channel filled with the abrasive liquid under the induction of an electric field and the turbulent flow generated at the tail during the reciprocating movement to impact the abrasive grains, and polishes the inner wall surface of the flow channel through the empowered abrasive grains.

[0009] An electro-induced liquid metal empowered abrasive liquid polishing method for the inner wall surface of a flow channel, the flow channel includes two opposite openings: a first end and a second end;

[0010] A first electrode is connected to the first end and sealed with a first seal; a second electrode is connected to the second end and sealed with a second seal;

[0011] The first electrode and the second electrode are respectively connected to the two poles of a power supply;

[0012] The inside of the flow channel is filled with abrasive liquid; the abrasive liquid is prepared by mixing liquid metal, electrolyte solution and abrasive grains in a certain proportion;

[0013] During polishing, under the induction of an electric field, the liquid metal moves along the flow channel. During the movement, the liquid metal collides with the abrasive grains in the advancing direction, and the turbulence generated at the tail of the liquid metal during the movement disturbs the abrasive grains. The liquid metal applies kinetic energy to the abrasive grains while moving, and the empowered abrasive grains erode the inner wall surface of the flow channel randomly at different angles to achieve polishing and removal.

[0014] Further, the liquid metal is gallium-based liquid metal.

[0015] Further, the power supply is an alternating power supply.

[0016] Further, by changing the positive and negative directions and the voltage magnitude of the power supply, the direction and magnitude of the electric field applied to the abrasive liquid inside the flow channel can be changed through the first electrode and the second electrode.

[0017] Further, under the action of the alternating electric field, the gallium-based liquid metal moves reciprocally along the flow channel, and empowers the abrasive grains while moving to polish the inner wall surface of the flow channel reciprocally.

[0018] The beneficial effects of this application are as follows:

[0019] Firstly, the present invention avoids the pressure and velocity attenuation along the flow channel in conventional abrasive flow polishing, as well as the pressure fluctuations and energy losses caused by flow channel deformation and changes in the flow channel direction. It eliminates the influence of changes in the flow channel configuration, and ensures the controllability, consistency, and stability of the polishing quality throughout the flow channel by regulating process parameters such as the moving speed (residence time) of the liquid metal, the number of reciprocations, etc. as needed in different regions. In the present invention, the electrode arrangement structure is simple and easy to control, and the polishing liquid is environmentally friendly and pollution-free.

[0020] Secondly, during the electro-controlled directional movement of the liquid metal along the flow channel in the present invention, the liquid metal can empower the abrasive grains while moving to polish the wall surface of the flow channel. In this way, targeted polishing can be carried out in different regions according to the actual situation of the flow channel configuration and the wall surface. The entire polishing process can be regarded as a set of a series of discrete processes, avoiding the pressure and velocity attenuation along the flow channel from the inlet to the outlet in conventional abrasive flow polishing, as well as the pressure fluctuations and energy losses at the flow channel deformation and flow channel direction change points, eliminating the influence of changes in the flow channel configuration, and effectively regulating the uniform polishing of the flow channel wall surface;

[0021] Thirdly, since the present invention can regulate process parameters such as the moving speed (residence time) of the liquid metal, the number of reciprocations, etc. as needed in different regions according to the actual situation of the flow channel configuration and the wall surface for targeted polishing, the controllability, consistency, and stability of the polishing quality throughout the flow channel can be ensured;

[0022] Finally, in the present invention, electrodes only need to be arranged at the inlet and outlet of the flow channel, with simple structure and control, and the polishing liquid is environmentally friendly and pollution-free. Description of the Drawings

[0023] The following further elaborates on the present application with reference to the embodiments in the drawings, but does not constitute any limitation to the present application.

[0024] Figure 1 It is a schematic diagram of an electro-induced liquid metal empowered abrasive liquid polishing method for the inner wall surface of a flow channel.

[0025] The descriptions of the reference numerals in the drawings are as follows:

[0026] Power supply 1, first electrode 2, first seal 3, flow channel 4, abrasive grains 5, gallium-based liquid metal 6, electrolyte solution 7, abrasive liquid 8, second electrode 9, second seal 10. Detailed Embodiment

[0027] The following further describes the present invention with reference to the drawings through embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made. These all belong to the protection scope of the present invention. The following elaborates on the implementation of the present invention in detail with reference to the drawings, but the protection scope of the present invention is not limited to the following embodiments.

[0028] The present application proposes an electro-induced liquid metal empowered abrasive liquid polishing method for the inner wall surface of a flow channel, and the method is as follows:

[0029] As Figure 1 shown, it includes: power supply 1, first electrode 2, first seal 3, flow channel 4, abrasive grains 5, gallium-based liquid metal 6, electrolyte solution 7, abrasive liquid 8, second electrode 9, second seal 10;

[0030] Among them, the first end of the flow channel 4 is connected to the first electrode 2 and the first end of the flow channel 4 is sealed with the first seal 3;

[0031] Among them, the second end of the flow channel 4 is connected to the second electrode 9 and the second end of the flow channel 4 is sealed with the second seal 10;

[0032] Among them, the first electrode 2 and the second electrode 9 are respectively connected to the two poles of the power supply 1, and an electric field is generated inside the closed flow channel 4 by the power supply 1 through the first electrode 2 and the second electrode 9;

[0033] Among them, the abrasive liquid 8 is filled inside the flow channel 4; the abrasive liquid 8 is prepared from gallium-based liquid metal 6, electrolyte solution 7 and abrasive grains 5 in a certain proportion.

[0034] Among them, under the induction of an electric field, the gallium-based liquid metal 6 moves along the flow channel 4. During the movement of the gallium-based liquid metal 6, it collides and impacts the abrasive grains 5 in the traveling direction. The turbulent flow generated at the tail of the gallium-based liquid metal 6 during the movement disturbs the abrasive grains 5. The gallium-based liquid metal 6 applies kinetic energy to the abrasive grains 5 while moving, and the energized abrasive grains 5 randomly erode the inner wall surface of the flow channel 4 at different angles to achieve polishing and removal.

[0035] By changing the positive and negative directions and voltage magnitude of the power supply 1, the electric field direction and electric field intensity magnitude applied to the abrasive liquid 8 inside the flow channel 4 can be changed through the first electrode 2 and the second electrode 9. Under the action of the alternating electric field, the gallium-based liquid metal 6 reciprocates along the flow channel 4, and while moving, it energizes the abrasive grains 5 to reciprocally polish the inner wall surface of the flow channel 4. By changing the electric field intensity magnitude and direction applied in a region-by-region and as needed, process parameters such as the moving speed (residence time) and the number of reciprocating movements of the gallium-based liquid metal 6 are regulated to ensure the controllability, consistency, and stability of the polishing quality of the entire flow channel 4.

[0036] The above-described embodiments are the preferred embodiments of the present application, which are only used to facilitate the description of the present application and do not impose any form of limitation on the present application. Any person with ordinary knowledge in the technical field, without departing from the technical features disclosed in the present application, makes local modifications or equivalent embodiments using the technical content disclosed in the present application, and without departing from the technical feature content of the present application, still belongs to the scope of the technical features of the present application.

Claims

1. An electro-induced liquid metal empowered abrasive liquid polishing method for the inner wall surface of a flow channel, characterized in that: The flow channel includes two opposite openings: a first end and a second end; A first electrode is connected to the first end and sealed with a first seal; a second electrode is connected to the second end and sealed with a second seal; The first electrode and the second electrode are respectively connected to two poles of a power supply; An abrasive liquid is filled inside the flow channel; the abrasive liquid is prepared by mixing a liquid metal, an electrolyte solution, and abrasive grains in a certain proportion; During polishing, under the induction of an electric field, the liquid metal moves along the flow channel. During the movement, the liquid metal collides and impacts the abrasive grains in the traveling direction. The turbulence generated at the tail of the liquid metal during the movement disturbs the abrasive grains. The liquid metal applies kinetic energy to the abrasive grains while moving. The energized abrasive grains randomly erode the inner wall surface of the flow channel at different angles to achieve polishing and removal; The liquid metal is a gallium-based liquid metal; The power supply is an alternating current power supply.

2. The electro-induced liquid metal empowered abrasive liquid polishing method for the inner wall surface of a flow channel according to claim 1, wherein: By changing the positive and negative directions and voltage magnitude of the power supply, the electric field direction and electric field intensity magnitude applied to the abrasive liquid inside the flow channel can be changed through the first electrode and the second electrode.

3. A method for electro-induced liquid metal empowered abrasive liquid polishing of the inner wall surface of a flow channel according to claim 2, characterized in that: Under the action of an alternating electric field, the gallium-based liquid metal reciprocates along the flow channel, energizing the abrasive grains while moving to reciprocally polish the inner wall surface of the flow channel.

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