Light alloy workpiece micro-arc oxidation device

Abstract

The light alloy workpiece micro-arc oxidation device comprises a reaction tank, an insulation net is arranged in the reaction tank and divides the reaction tank into a first space and a second space, the first space communicates with the second space, the first space is used for containing a light alloy workpiece, and the second space is used for containing a cathode plate body; the liquid storage tank is communicated with the reaction tank through a conveying pipeline, and the liquid storage tank is used for storing electrolyte; and the conveying pipeline is connected to the cooling equipment, and the cooling equipment is used for cooling the electrolyte in the conveying pipeline. And short circuit caused by contact between the light alloy workpiece and the cathode plate body in the oxidation process is avoided through the insulating net, so that the safety and the reliability are improved. And the temperature of the electrolyte is rapidly increased along with the reaction, and the high-temperature electrolyte can be cooled through cooling equipment, so that the micro-arc oxidation reaction is ensured to be at a normal temperature, the normal growth of a film layer is ensured, and the film forming quality is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of metal surface treatment, and in particular to a micro-arc oxidation device for light alloy workpieces. Background Art

[0002] Micro-arc oxidation technology is to place light alloy in electrolyte, and generate spark discharge on the surface of the material through power supply equipment. After complex plasma chemistry, thermochemistry and electrochemistry, a dense ceramic oxide film is generated. This light alloy surface treatment technology has the advantages of simple process and environmentally friendly electrolyte, and is widely used in aerospace, automotive industry, electronic products and other fields. In the prior art, indirect cooling is often used to cool the electrolyte, but the cathode is prone to shaking under the impact of electrolyte flow, changing the distance between the cathode and the anode, resulting in instability of the micro-arc oxidation process, and there is also the risk of short circuit due to contact with the light alloy workpiece. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0004] To this end, the utility model provides a light alloy workpiece micro-arc oxidation device.

[0005] In view of this, according to an embodiment of the present application, a light alloy workpiece micro-arc oxidation device is proposed, comprising:

[0006] A reaction tank, wherein an insulating net is arranged in the reaction tank, and the insulating net separates the reaction tank into a first space and a second space, and the first space is connected to the second space, wherein the first space is used to place a light alloy workpiece, and the second space is used to place a cathode plate;

[0007] A liquid storage tank, connected to the reaction tank through a delivery pipeline, and the liquid storage tank is used to store electrolyte;

[0008] A cooling device is provided, wherein the delivery pipeline is connected to the cooling device, and the cooling device is used to cool the electrolyte in the delivery pipeline.

[0009] In a feasible implementation, it also includes:

[0010] The reaction tank is provided with an input port and an output port, and the input port and the output port are both connected to the delivery pipeline;

[0011] Among them, one of the above-mentioned input port and the above-mentioned output port is opened at the reaction tank corresponding to the first space, and the other is opened at the reaction tank corresponding to the second space.

[0012] In a feasible implementation, it also includes:

[0013] A fixing member is used to fix the cathode plate body to the inner wall of the reaction tank corresponding to the second space.

[0014] In a feasible implementation manner, the insulating net can be moved in the reaction tank toward or away from the cathode plate.

[0015] In a feasible implementation, it also includes:

[0016] The detection component is arranged in the liquid storage tank and is used to detect the state of the electrolyte in the liquid storage tank, and the electrolyte state includes the pH value and conductivity of the electrolyte.

[0017] In a feasible implementation manner, the cooling device comprises:

[0018] A cooling tank, the cooling tank is used to contain a cooling medium, and part of the delivery pipeline is immersed in the cooling medium in the cooling tank;

[0019] A refrigerator, connected to the cooling tank, for cooling the cooling medium in the cooling tank;

[0020] A temperature detection element is disposed in the cooling tank and is used to detect the temperature of the cooling medium in the cooling tank. The temperature detection element is electrically connected to the refrigerator.

[0021] When the temperature detecting element detects that the temperature of the cooling medium rises to a preset temperature, the refrigerator is controlled to operate to reduce the temperature of the cooling medium.

[0022] In a feasible implementation manner, the cooling device further includes:

[0023] A first pump body is disposed between the input end of the refrigerator and the output end of the cooling tank, and pumps the cooling medium in the cooling tank to the refrigerator when the temperature detection element detects that the temperature of the cooling medium rises to a preset temperature;

[0024] The second pump body is arranged between the input end of the cooling tank and the output end of the refrigerator, and is used for conveying the cooling medium cooled by the refrigerator to the cooling tank.

[0025] In a feasible implementation manner, part of the conveying pipeline in the cooling tank is arranged in a spiral manner.

[0026] In a feasible implementation, it also includes:

[0027] A third pump body is disposed between the output port and the liquid storage tank, and is used to pump the electrolyte in the second space to the liquid storage tank;

[0028] The fourth pump body is arranged between the cooling groove and the input port, and is used for conveying the electrolyte cooled by the cooling groove to the first space.

[0029] In a feasible implementation manner, the third pump body includes a filter pump body.

[0030] Compared with the prior art, the utility model at least includes the following beneficial effects: the light alloy workpiece micro-arc oxidation device provided in the embodiment of the present application is provided with a reaction tank, a liquid storage tank and a cooling device. Among them, an insulating net can be provided in the reaction tank, and the reaction tank is separated into a first space and a second space by the insulating net, wherein the light alloy workpiece can be placed in the first space, the cathode plate body can be placed in the second space, and the electrolyte can flow in the first space and the second space through the through holes on the insulating net, and the light alloy workpiece can be prevented from contacting with the cathode plate body during the oxidation process through the insulating net, resulting in a short circuit, thereby improving safety and reliability. The electrolyte can be stored in the liquid storage tank, and the electrolyte in the liquid storage tank is transported to the reaction tank through a delivery pipeline to ensure that the micro-arc oxidation test can be carried out continuously. The electrolyte temperature will rise rapidly as the reaction proceeds, and part of the delivery pipeline is in a cooling medium. After heat exchange with the cooling medium, the high-temperature electrolyte is cooled to ensure that the micro-arc oxidation reaction is at a normal temperature, ensure that the micro-arc oxidation reaction proceeds normally, and improve the quality of the film layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0032] Figure 1 A schematic structural diagram of a light alloy workpiece micro-arc oxidation device according to an embodiment of the present application.

[0033] in, Figure 1 The corresponding relationship between the reference numerals and the component names is as follows:

[0034] 110 reaction tank, 120 insulation net, 130 delivery pipeline, 140 liquid storage tank, 150 cooling equipment, 151 cooling tank, 152 refrigerator, 153 first pump body, 154 second pump body, 160 third pump body, 170 fourth pump body, 200 light alloy workpiece. DETAILED DESCRIPTION

[0035] In order to better understand the above-mentioned technical scheme, the technical scheme of the embodiments of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical scheme of the embodiments of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.

[0036] like Figure 1 As shown, according to an embodiment of the present application, a micro-arc oxidation device for a light alloy workpiece 200 is proposed, comprising: a reaction tank 110, wherein an insulating net 120 is disposed in the reaction tank 110, wherein the insulating net 120 separates the reaction tank 110 into a first space and a second space, and the first space is connected to the second space, wherein the first space is used to place the light alloy workpiece 200, and the second space is used to place a cathode plate;

[0037] A liquid storage tank 140 is connected to the reaction tank 110 through a delivery pipeline 130, and the liquid storage tank 140 is used to store electrolyte;

[0038] The cooling device 150 is connected to the delivery pipeline 130 , and the cooling device 150 is used to cool the electrolyte in the delivery pipeline 130 .

[0039] It can be understood that the micro-arc oxidation device for the light alloy workpiece 200 provided in the embodiment of the present application is provided with a reaction tank 110, a liquid storage tank 140 and a cooling device 150. Among them, an insulating net 120 may be provided in the reaction tank 110, and the reaction tank 110 is separated into a first space and a second space by the insulating net 120, wherein the light alloy workpiece 200 can be placed in the first space, and the cathode plate body can be placed in the second space, and the electrolyte can flow in the first space and the second space through the through holes on the insulating net 120, and the insulating net 120 can be used to prevent the light alloy workpiece 200 from contacting with the cathode plate body during the oxidation process, resulting in a short circuit, thereby improving safety and reliability. The electrolyte can be stored in the liquid storage tank 140, and the electrolyte in the liquid storage tank 140 is transported to the reaction tank 110 through the transport pipeline 130 to ensure that the micro-arc oxidation test can be carried out continuously. The electrolyte temperature will rise rapidly as the reaction proceeds. The delivery pipeline 130 is connected to the cooling device 150, and the high-temperature electrolyte can be cooled by the cooling device 150 to ensure that the micro-arc oxidation reaction is at a normal temperature, ensure the normal growth of the film layer, and improve the film quality.

[0040] It is understandable that the reaction tank 110 can be made of insulating material to ensure safety after power is turned on. The light alloy workpiece 200 can be arranged in the first space by hanging. The insulating net 120 can be provided with multiple through holes, and the multiple through holes are arranged at intervals, and the aperture of the through holes is large to ensure the fluidity of the electrolyte and ensure the stable conduct of the micro-arc oxidation test.

[0041] In some examples, such as Figure 1 As shown, the reaction tank 110 is provided with an input port and an output port, and the input port and the output port are both connected to the delivery pipeline 130;

[0042] Among them, one of the input port and the output port is opened at the reaction tank 110 corresponding to the first space, and the other is opened at the reaction tank 110 corresponding to the second space.

[0043] It can be understood that the reaction tank 110 may be provided with an input port and an output port, and both the input port and the output port are connected to the delivery pipeline 130, and the low-temperature electrolyte is delivered from the input port to the reaction tank 110 through the delivery pipeline 130. While the micro-arc oxidation reaction is in progress, the electrolyte temperature will rise rapidly as the reaction proceeds, and the high-temperature electrolyte can be delivered to the cooling device 150 through the delivery pipeline through the output port for cooling, thereby forming a circulation path for the electrolyte, ensuring that the electrolyte can be stably circulated and cooled to maintain a suitable temperature. Specifically, in the case where the input port is opened at the reaction tank 110 corresponding to the first space, the output port is opened at the reaction tank 110 corresponding to the second space, and in the case where the input port is opened at the reaction tank 110 corresponding to the second space, the output port is opened at the reaction tank 110 corresponding to the first space, so that the input port and the output port are arranged on both sides of the insulating net to ensure the fluidity of the electrolyte.

[0044] In some examples, such as Figure 1 As shown, it also includes:

[0045] A fixing member is used to fix the cathode plate to the inner wall of the reaction tank 110 corresponding to the second space.

[0046] It is understandable that the above-mentioned micro-arc oxidation device for the light alloy workpiece 200 may also be provided with a fixing member. Specifically, the cathode plate body may be fixed to the inner wall of the second space by the fixing member, and the fixing member may be arranged relative to the light alloy workpiece 200 to ensure the stability of the cathode plate body. Under the influence of the flow of the electrolyte, the light alloy workpiece 200 is ensured not to touch the cathode plate body through the combined action of the insulating net 120 and the fixing member, thereby avoiding a short circuit and improving reliability.

[0047] Exemplarily, the cathode plate body can be made of a stainless steel plate body, and fixed to the inner wall of the reaction tank 110 by a fixing member, and the fixing member can be made of a screw, or the stainless steel plate body can be welded or glued to the inner wall of the reaction tank 110 .

[0048] In some examples, such as Figure 1 As shown, the insulating net 120 can be moved in the reaction tank 110 toward or away from the cathode plate.

[0049] It is understandable that the insulating net 120 can be movably arranged in the reaction tank 110, and the specific moving direction is close to or away from the cathode plate body. In this way, the insulating net 120 can be moved according to the size of the light alloy workpiece 200, so as to adjust the size of the first space, which is suitable for light alloy workpieces 200 of various sizes, and ensures that the light alloy workpiece 200 does not touch the cathode plate body, avoids short circuit, and improves reliability.

[0050] In some examples, such as Figure 1 As shown, it also includes:

[0051] The detection component is disposed in the liquid storage tank 140 and is used to detect the state of the electrolyte in the liquid storage tank 140 , wherein the state of the electrolyte includes the pH value and conductivity of the electrolyte.

[0052] It can be understood that the state of the electrolyte in the liquid storage tank 140 is detected by the detection component to determine whether the pH value, conductivity and other properties of the electrolyte after the micro-arc oxidation reaction meet the requirements for continuing the micro-arc oxidation reaction. If so, it can continue to be used. If not, the electrolyte can be reconfigured to ensure the normal growth of the film layer and improve the film formation quality.

[0053] In some examples, such as Figure 1 As shown, the cooling device 150 comprises:

[0054] A cooling tank 151, the cooling tank 151 is used to contain a cooling medium, and a portion of the delivery pipeline 130 is immersed in the cooling medium in the cooling tank 151;

[0055] A refrigerator 152, connected to the cooling tank 151, for cooling the cooling medium in the cooling tank 151;

[0056] A temperature detection element is disposed in the cooling tank 151 and is used to detect the temperature of the cooling medium in the cooling tank 151. The temperature detection element is electrically connected to the refrigerator 152.

[0057] When the temperature detecting element detects that the temperature of the cooling medium rises to a preset temperature, the refrigerator 152 is controlled to operate to reduce the temperature of the cooling medium.

[0058] It is understood that the cooling device 150 may be provided with a cooling tank 151, a refrigerator 152 and a temperature detection member. Among them, a cooling medium may be contained in the cooling tank 151, and part of the delivery pipeline 130 may be immersed in the cooling medium in the cooling tank 151, and heat exchange is performed with the low-temperature cooling medium to reduce the temperature of the electrolyte delivered to the first space. The refrigerator 152 is connected to the cooling tank 151. When the low-temperature cooling medium in the cooling tank 151 is heat exchanged and becomes a high-temperature cooling medium, the high-temperature cooling medium can be cooled by the refrigerator 152 to ensure the cooling effect of the cooling medium. The temperature detection member may be arranged in the cooling tank 151 to detect the temperature of the cooling medium in the cooling tank 151 in real time, and the temperature detection member may be electrically connected to the refrigerator 152. In this way, when the temperature detection member detects that the temperature of the cooling medium in the cooling tank 151 rises to a preset temperature, it indicates that the temperature of the cooling medium is too high and needs to be cooled. The refrigerator 152 is controlled to start, and the cooling medium is cooled to ensure that the temperature of the cooling medium is at a suitable temperature. By cooling the electrolyte and cooling medium according to temperature control, the electrolyte can be cooled accurately to achieve the purpose of energy saving and consumption reduction.

[0059] In some examples, such as Figure 1 As shown, the cooling device 150 further includes:

[0060] The first pump body 153 is disposed between the input end of the refrigerator 152 and the output end of the cooling tank 151, and pumps the cooling medium in the cooling tank 151 to the refrigerator 152 when the temperature detection element detects that the temperature of the cooling medium rises to a preset temperature;

[0061] The second pump body 154 is disposed between the input end of the cooling tank 151 and the output end of the refrigerator 152 , and is used to transport the cooling medium cooled by the refrigerator 152 to the cooling tank 151 .

[0062] It is understood that the cooling device 150 may also be provided with a first pump body 153 and a second pump body 154. Among them, the first pump body 153 may be arranged between the input end of the refrigerator 152 and the output end of the cooling tank 151. When the temperature detection member detects that the temperature of the cooling medium in the cooling tank 151 rises to a preset temperature, the first pump body 153 may be used to pump the high-temperature cooling medium in the cooling tank 151 to the refrigerator 152, and the cooling medium is cooled by the refrigerator 152. The second pump body 154 may be arranged between the input end of the cooling tank 151 and the output end of the refrigerator 152. After the refrigerator 152 cools the high-temperature cooling medium so that the high-temperature cooling medium becomes a low-temperature cooling medium, the second pump body 154 is started to pump the low-temperature cooling medium into the cooling tank 151, so as to continuously cool the electrolyte of the part of the delivery pipeline 130 in the cooling tank 151. In this way, a cooling circulation loop is formed. Exemplarily, the first pump body 153 and the second pump body 154 may be selected from diaphragm pumps.

[0063] In some examples, such as Figure 1 As shown, part of the conveying pipeline 130 in the cooling tank 151 is arranged in a spiral manner.

[0064] It is understandable that part of the delivery pipeline 130 in the cooling tank 151 can be arranged in a spiral shape to increase the contact area with the cooling medium in the cooling tank 151 and increase the stroke of the electrolyte in the cooling tank 151 to extend the heat exchange time with the cooling medium and ensure the cooling effect.

[0065] In some examples, such as Figure 1 As shown, it also includes:

[0066] A third pump body 160 is disposed between the output port and the liquid storage tank 140 and is used to pump the electrolyte in the second space to the liquid storage tank 140;

[0067] The fourth pump body 170 is disposed between the cooling groove 151 and the input port, and is used to transport the electrolyte cooled by the cooling groove 151 to the first space.

[0068] It can be understood that the above-mentioned light alloy workpiece 200 micro-arc oxidation device can also be provided with a third pump body 160 and a fourth pump body 170. Among them, the third pump body 160 can be arranged between the output port of the reaction tank 110 and the liquid storage tank 140. After starting the third pump body 160, the high-temperature electrolyte after the micro-arc oxidation reaction in the second space can be transported to the liquid storage tank 140, and the high-temperature electrolyte in the liquid storage tank 140 can be pumped to the first space along the delivery pipeline 130 through the fourth pump body 170. In this process, the delivery pipeline 130 for transporting the high-temperature electrolyte will pass through the cooling tank 151, and after heat exchange with the low-temperature cooling medium in the cooling tank 151, it will become a low-temperature electrolyte, and the low-temperature electrolyte will be pumped into the first space to ensure that the micro-arc oxidation reaction can be carried out continuously and stably, ensure that the micro-arc oxidation reaction is at a normal temperature, ensure the normal growth of the film layer, and improve the film quality.

[0069] In some examples, such as Figure 1 As shown, the third pump body 160 comprises a filter pump body.

[0070] It is understandable that the third pump body 160 may be a filter pump body, through which the electrolyte after micro-arc oxidation is filtered to remove impurities, thereby ensuring the quality of the electrolyte, thereby ensuring the normal and stable micro-arc oxidation reaction and the normal growth of the film layer. The fourth pump body 170 may be a diaphragm pump.

[0071] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection;

[0072] "Connected" can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0073] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0074] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0075] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A light alloy workpiece micro-arc oxidation device, characterized in that: include: A reaction tank, wherein an insulating net is arranged in the reaction tank, wherein the insulating net separates the reaction tank into a first space and a second space, and the first space is connected to the second space, wherein the first space is used to place a light alloy workpiece, and the second space is used to place a cathode plate; A liquid storage tank, connected to the reaction tank through a delivery pipeline, and the liquid storage tank is used to store electrolyte; A cooling device, the delivery pipeline is connected to the cooling device, and the cooling device is used to cool the electrolyte in the delivery pipeline.

2. The light alloy workpiece micro-arc oxidation device according to claim 1, characterized in that: The reaction tank is provided with an input port and an output port, and the input port and the output port are both connected to the delivery pipeline; Wherein, one of the input port and the output port is opened at the reaction tank corresponding to the first space, and the other is opened at the reaction tank corresponding to the second space.

3. The light alloy workpiece micro-arc oxidation device according to claim 1, characterized in that: Also includes: A fixing member is used to fix the cathode plate body to the inner wall of the reaction tank corresponding to the second space.

4. The light alloy workpiece micro-arc oxidation device according to claim 1, characterized in that: The insulating net can be moved in the reaction tank toward or away from the cathode plate body.

5. The light alloy workpiece micro-arc oxidation device according to claim 1, characterized in that: Also includes: The detection component is arranged in the liquid storage tank and is used to detect the state of the electrolyte in the liquid storage tank, and the electrolyte state includes the pH value and conductivity of the electrolyte.

6. The light alloy workpiece micro-arc oxidation device according to claim 2, characterized in that: The cooling device comprises: A cooling tank, the cooling tank is used to contain a cooling medium, and a portion of the delivery pipeline is immersed in the cooling medium in the cooling tank; A refrigerator, connected to the cooling tank, for cooling the cooling medium in the cooling tank; A temperature detection element is disposed in the cooling tank and is used to detect the temperature of the cooling medium in the cooling tank, and the temperature detection element is electrically connected to the refrigerator; Wherein, when the temperature detecting element detects that the temperature of the cooling medium rises to a preset temperature, the refrigerator is controlled to operate to reduce the temperature of the cooling medium.

7. The light alloy workpiece micro-arc oxidation device according to claim 6, characterized in that: The cooling device also includes: A first pump body is disposed between the input end of the refrigerator and the output end of the cooling tank, and pumps the cooling medium in the cooling tank to the refrigerator when the temperature detecting element detects that the temperature of the cooling medium rises to a preset temperature; The second pump body is arranged between the input end of the cooling tank and the output end of the refrigerator, and is used for conveying the cooling medium cooled by the refrigerator to the cooling tank.

8. The light alloy workpiece micro-arc oxidation device according to claim 6, characterized in that: Part of the conveying pipeline in the cooling tank is arranged in a spiral manner.

9. The light alloy workpiece micro-arc oxidation device according to claim 6, characterized in that: Also includes: a third pump body, disposed between the output port and the liquid storage tank, and used for pumping the electrolyte in the second space to the liquid storage tank; The fourth pump body is arranged between the cooling tank and the input port, and is used for conveying the electrolyte cooled by the cooling tank to the first space.

10. The light alloy workpiece micro-arc oxidation device according to claim 9, characterized in that: The third pump body includes a filter pump body.

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