A metal material surface oxidation treatment device and a method thereof

Abstract

The application relates to a metal material surface oxidation treatment device and a method thereof, which comprises an anodic oxidation device, an air extraction device, a cooling device, a clamping device for fixing a metal workpiece, a stirring device and a treatment tank; the anodic oxidation device comprises a storage battery, a conductive rod located above the treatment tank and a conductive sheet located in the treatment tank, a first wire is connected between a power negative pole of the storage battery and the conductive sheet, and a second wire is connected between a power positive pole of the storage battery and the conductive rod; the clamping device is hung on the conductive rod, and the metal workpiece is sleeved on the lower part of the clamping device. The metal material surface oxidation treatment device can fix the inner cavity of the metal workpiece, avoid the contact between the outer wall of the metal workpiece and the contact part of the clamp, ensure the uniform and sufficient oxidation of the outer wall of the metal workpiece, improve the oxidation quality, timely suck away the generated hydrogen during the oxidation process, and facilitate unified collection and treatment.

Description

Technical Field

[0001] This invention relates to the field of metal material processing technology, and in particular to a metal material surface oxidation treatment apparatus and method. Background Technology

[0002] Anodizing technology is widely used in the surface treatment of metals such as aluminum, magnesium, and titanium. For example, after anodizing, aluminum exhibits improved surface hardness and corrosion resistance. Anodizing can also be used to prepare oxide electronic materials of the corresponding metals. For instance, anodizing titanium yields titanium oxide, which is used as a catalytic and optoelectronic material. Anodizing can also be used to prepare micro / nano-scale structural materials. For example, anodizing aluminum produces a porous structure with nanoscale pores, which can be used to fabricate various micro / nano-scale materials and devices.

[0003] A large amount of gas is generated during the anodizing process, which is usually hydrogen. If not treated, it will pose a safety hazard. At the same time, when performing anodizing, a clamp is needed to fix the metal part and then immerse it in the electrolyte. However, the common clamps clamp the outer wall of the metal part. This will cause the part's outer wall to not fully contact the electrolyte, resulting in uneven oxidation of the metal part's outer wall. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a device and method for surface oxidation treatment of metal materials, so as to ensure uniform and sufficient oxidation of the outer wall of metal parts and improve the oxidation quality.

[0005] This invention is implemented using the following scheme: a metal material surface oxidation treatment device, including an anodizing device, a ventilation device, a cooling device, a clamping device for fixing metal workpieces, a stirring device, and a treatment tank; the anodizing device includes a battery, a conductive rod located above the treatment tank, and a conductive sheet located inside the treatment tank, a first wire connecting the negative terminal of the battery to the conductive sheet, and a second wire connecting the positive terminal of the battery to the conductive rod; the clamping device is hung on the conductive rod, and the metal workpiece is sleeved on the lower part of the clamping device.

[0006] Furthermore, the clamping device is made entirely of conductive metal. The clamping device includes a hook, with a hollow column fixedly connected to the lower end of the hook. A first sliding groove is provided on the lower side of the hollow column, and a second sliding groove is provided on the upper side. A third connecting plate that can slide relative to the first sliding groove is provided, and a second connecting plate that can slide relative to the second sliding groove is provided. The second connecting plate and the third connecting plate are connected at one end inside the hollow column through the first connecting plate. A clamping plate is fixedly connected to the outward end of the third connecting plate, and a pressure plate is fixedly connected to the outward end of the second connecting plate. Both the clamping plate and the lower outer wall of the hollow column are provided with anti-slip textures. A spring is provided between the side of the first connecting plate away from the second connecting plate and the inner wall of the hollow column to push the first connecting plate so that the clamping plate is pressed tightly against the metal processing part at the lower part of the hollow column.

[0007] Furthermore, the exhaust device includes a blower and suction hoods located on both sides above the processing tank. The blower's outlet is connected to an exhaust pipe, and the blower's inlet is connected to a T-connector. The two inlet ends of the T-connector are respectively connected to the suction hoods on both sides of the processing tank through air supply pipes.

[0008] Furthermore, the cooling device includes a serpentine pipe located inside the processing tank and a radiator located outside the processing tank. The inlet of the serpentine pipe is connected to the outlet of the radiator, and the inlet of the radiator is connected to a water pump. The inlet of the water pump is connected to the outlet of the serpentine pipe.

[0009] Furthermore, the stirring device includes a motor located at the bottom of the processing tank, with the motor shaft extending upwards from the bottom of the processing tank into the processing tank, and stirring blades fixedly connected to the shaft at the bottom of the processing tank.

[0010] A method for processing a metal material surface oxidation treatment apparatus as described above includes the following steps: (1) Pre-treatment of metal parts before anodizing: Press the pressure plate to drive the second connecting plate to move inward, and drive the first connecting plate to move inward through the second connecting plate. When the first connecting plate moves inward, it will squeeze the spring. At the same time, the first connecting plate drives the third connecting plate to move inward and the clamping plate to retract inward. Then, put the metal parts under the hollow column and then release the pressure plate. At this time, the spring's rebound force pushes the first connecting plate outward. The first connecting plate drives the clamping plate to extend outward through the third connecting plate and press against the metal parts for stable fixation. Then, hang the hook on the conductive rod and inject electrolyte into the treatment tank until the metal parts are submerged in the electrolyte and stop injecting. (2) Then the motor drives the stirring blade to rotate through the shaft. The stirring blade stirs the electrolyte to remove the air bubbles attached to the surface of the metal workpiece. Then the battery starts to discharge. The positive current will be introduced into the metal workpiece through the second wire, the conductive rod, the hook and the hollow column. At the same time, the negative current will be introduced into the electrolyte through the first wire and the conductive sheet. Thus, the metal workpiece will start to undergo anodizing. During the oxidation process, the suction fan will input the generated hydrogen gas into the exhaust pipe through the suction hood, the gas supply pipe and the three-way pipe, and then discharge it uniformly through the exhaust pipe. (3) During the oxidation process, the electrolyte temperature will rise. At this time, the coolant in the serpentine tube will exchange heat with the electrolyte. The water pump will input the heated coolant in the serpentine tube into the radiator for cooling. Then the cooled coolant will flow back into the serpentine tube.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The metal material surface oxidation treatment device of the present invention has a novel structure and reasonable design. By clamping and fixing the inner cavity of the metal workpiece, it avoids the outer wall of the metal workpiece from not being able to fully contact the electrolyte with the contact part of the clamp, ensuring that the outer wall of the metal workpiece is oxidized evenly and fully, and improving the oxidation quality. During the oxidation process, the generated hydrogen gas will be absorbed in time, which is convenient for unified collection and treatment.

[0012] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through specific embodiments and related drawings. Attached Figure Description

[0013] Figure 1 This is a perspective view of the processing device according to an embodiment of the present invention; Figure 2 This is a top view of the processing device according to an embodiment of the present invention; Figure 3 This is a front sectional view of the processing device according to an embodiment of the present invention; Figure 4 This is a cross-sectional view of the clamping device according to an embodiment of the present invention.

[0014] The following are the labels in the diagram: 100, Anodizing device; 200, Exhaust device; 300, Cooling device; 400, Clamping device; 500, Stirring device; 1, Battery; 11, Conductive sheet; 12, Conductive rod; 13, First wire; 14, Second wire; 2, Fan; 21, Exhaust pipe; 22, T-connector; 23, Gas supply pipe; 24, Suction hood; 3, Radiator; 31, Water pump; 32, Serpentine pipe; 4, Hook; 41, Hollow column; 42, First connecting plate; 43, Second connecting plate; 44, Pressure plate; 45, Spring; 46, Third connecting plate; 47, Clamping plate; 48, Metal processing part; 5, Motor; 51, Rotating shaft; 52, Stirring blade; 6, Processing tank. Detailed Implementation

[0015] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0016] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0017] like Figures 1-4 As shown, a metal material surface oxidation treatment device includes an anodizing device 100, an exhaust device 200, a cooling device 300, a clamping device 400 for fixing metal parts, a stirring device 500, and a treatment tank 6. The anodizing device 100 includes a battery 1, a conductive rod 12 located above the treatment tank 6, and a conductive sheet 11 located inside the treatment tank. A first wire 13 connects the negative terminal of the battery 1 to the conductive sheet 11, and a second wire 14 connects the positive terminal of the battery 1 to the conductive rod 12. The clamping device 400 is attached to the conductive rod, and the metal part 48 is sleeved on the lower part of the clamping device. The metal part is a hollow cylinder. The clamping device 400 clamps and fixes the inner cavity of the metal part, which effectively solves the problem that common clamps clamp the outer wall of the metal part, resulting in insufficient contact between the outer wall of the metal part and the electrolyte, leading to uneven oxidation of the outer wall of the metal part and affecting the oxidation quality.

[0018] In this embodiment, the clamping device 400 is made of conductive metal. The clamping device 400 includes a hook 4, and a hollow column 41 is fixedly connected to the lower end of the hook 4. A first sliding groove is opened on the lower side of the hollow column 41, and a second sliding groove is opened on the upper side. A third connecting plate 46 that can slide relative to the first sliding groove is provided, and a second connecting plate 43 that can slide relative to the second sliding groove is provided. The second connecting plate 43 and the third connecting plate 46 are connected at one end inside the hollow column through a first connecting plate 42. A clamping plate 47 is fixedly connected to the outward end of the third connecting plate 46, and a pressure plate 44 is fixedly connected to the outward end of the second connecting plate 43. The clamping plate 47 and the lower outer side wall of the hollow column 41 are provided with anti-slip textures. A spring 45 is provided between the side of the first connecting plate 42 away from the second connecting plate 43 and the inner wall of the hollow column to push the first connecting plate 42 so that the clamping plate 47 is pressed tightly against the metal processing part 48 at the lower part of the hollow column 41. The pressure plate is used as a control switch. When the pressure plate is released, the third connecting plate 46 will extend outward under the action of the spring to press against the inner wall of the metal workpiece. When the pressure plate is pressed inward, the third connecting plate 46 will retract inward and release the metal workpiece.

[0019] In this embodiment, the exhaust device 200 includes a suction fan 2 and suction hoods 24 located on both sides above the processing tank. The exhaust port of the suction fan 2 is connected to an exhaust pipe 21, and the inlet of the suction fan 2 is connected to a three-way pipe 22. The two inlet ends of the three-way pipe 22 are respectively connected to the suction hoods 24 on both sides of the processing tank through gas supply pipes 23. 2. During the oxidation process, the suction fan will input the generated hydrogen gas into the exhaust pipe along the suction hood, gas supply pipe, and three-way pipe, and then discharge it uniformly through the exhaust pipe. This allows for convenient collection and treatment of the uniformly discharged hydrogen gas.

[0020] In this embodiment, the cooling device 300 includes a serpentine tube 32 located inside the processing tank and a cooling radiator 3 located outside the processing tank. The inlet of the serpentine tube 32 is connected to the outlet of the cooling radiator 3, and the inlet of the cooling radiator 3 is connected to a water pump 31. The inlet of the water pump 31 is connected to the outlet of the serpentine tube 32. During the oxidation process, the electrolyte temperature rises. At this time, the coolant in the serpentine tube exchanges heat with the electrolyte. The water pump pumps the heated coolant in the serpentine tube into the cooling radiator for cooling. Then, the cooled coolant flows back into the radiator, thus repeatedly absorbing and lowering the electrolyte temperature to ensure that the electrolyte is at the optimal temperature and to ensure the quality of the anodizing of the metal parts.

[0021] In this embodiment, the stirring device 500 includes a motor 5 located at the bottom of the processing tank. The rotating shaft 51 of the motor 5 passes through the bottom of the processing tank and extends into the processing tank. The bottom of the processing tank is provided with stirring blades 52 fixedly connected to the rotating shaft 51.

[0022] A method for processing a metal material surface oxidation treatment apparatus as described above includes the following steps: (1) Before anodizing the metal workpiece 48, press the pressure plate 44 to drive the second connecting plate 43 to move inward. The second connecting plate 43 drives the first connecting plate 42 to move inward. When the first connecting plate 42 moves inward, it will squeeze the spring 45. At the same time, the first connecting plate 42 drives the third connecting plate 46 to move inward and the clamping plate 47 to retract inward. Then, the metal workpiece 48 is placed on the lower part of the hollow column 41. Then, the pressure plate 44 is released. At this time, the rebound force of the spring 45 pushes the first connecting plate 42 outward. The first connecting plate 42 drives the clamping plate 47 to extend outward through the third connecting plate 46 and press the metal workpiece 48 to fix it stably. Then, the hook 4 is suspended on the conductive rod 12. Electrolyte is injected into the treatment tank 6 until the metal workpiece 48 is submerged in the electrolyte and the injection is stopped. (2) Then the motor 5 drives the stirring blade 52 to rotate through the rotating shaft 51. The stirring blade 52 stirs the electrolyte to remove the air bubbles attached to the surface of the metal workpiece 48. Then the battery 1 starts to discharge. The positive current will be introduced into the metal workpiece 48 through the second wire 14, the conductive rod 12, the hook 4 and the hollow column 41. At the same time, the negative current will be introduced into the electrolyte through the first wire 13 and the conductive sheet 11. Thus, the metal workpiece 48 begins to undergo anodizing. During the oxidation process, the suction fan 2 will input the generated hydrogen gas into the exhaust pipe 21 through the suction hood 24, the gas delivery pipe 23 and the three-way pipe 22. The hydrogen gas will be discharged uniformly through the exhaust pipe 21, so as to facilitate the collection and treatment of the uniformly discharged hydrogen gas.

[0023] (3) During the oxidation process, the electrolyte temperature will rise. At this time, the coolant in the serpentine tube 32 will exchange heat with the electrolyte. The water pump 31 will input the heated coolant in the serpentine tube 32 into the radiator 3 for cooling. Then the cooled coolant will flow back into the serpentine tube 32. This process is repeated to absorb and reduce the electrolyte temperature, ensuring that the electrolyte is in the optimal temperature state.

[0024] Unless otherwise stated, if any of the technical solutions disclosed in this invention specify a numerical range, then the disclosed numerical range is a preferred numerical range. Anyone skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this invention discloses only some numerical values ​​to illustrate the technical solutions of this invention. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this invention.

[0025] If this invention discloses or relates to mutually fixedly connected components or structural parts, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured in one piece using a casting process) (except where it is obviously impossible to use an integral molding process).

[0026] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this invention to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.

[0027] Any component provided by this invention can be assembled from multiple individual components or can be a single component manufactured by a one-piece molding process.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A device for surface oxidation treatment of metallic materials, characterized in that: The device includes an anodizing apparatus, a ventilation apparatus, a cooling apparatus, a clamping device for fixing the metal workpiece, a stirring apparatus, and a processing tank. The anodizing apparatus includes a battery, a conductive rod located above the processing tank, and a conductive sheet located inside the processing tank. A first wire connects the negative terminal of the battery to the conductive sheet, and a second wire connects the positive terminal of the battery to the conductive rod. The clamping device is attached to the conductive rod, and the metal workpiece is fitted over the lower part of the clamping device. The clamping device is made entirely of conductive metal, with a first sliding groove on the lower side of the hollow column and a [missing information - likely a groove on the upper side]. There is a second sliding groove. The first sliding groove is provided with a third connecting plate that can slide relative to it. The second sliding groove is provided with a second connecting plate that can slide relative to it. The second connecting plate and the third connecting plate are connected at one end inside the hollow column through the first connecting plate. The third connecting plate is fixedly connected to a clamping plate at its outward end. The second connecting plate is fixedly connected to a pressure plate at its outward end. The clamping plate and the lower outer wall of the hollow column are both provided with anti-slip texture. A spring is provided between the side of the first connecting plate away from the second connecting plate and the inner wall of the hollow column to push the first connecting plate so that the clamping plate is pressed against the metal processing part at the lower part of the hollow column.

2. The metal material surface oxidation treatment apparatus according to claim 1, characterized in that: The exhaust device includes a blower and suction hoods located on both sides above the processing tank. The blower's outlet is connected to an exhaust pipe, and the blower's inlet is connected to a T-connector. The two inlet ends of the T-connector are respectively connected to the suction hoods on both sides of the processing tank through air supply pipes.

3. The metal material surface oxidation treatment apparatus according to claim 2, characterized in that: The cooling device includes a serpentine pipe located inside the processing tank and a radiator located outside the processing tank. The inlet of the serpentine pipe is connected to the outlet of the radiator. The inlet of the radiator is connected to a water pump, and the inlet of the water pump is connected to the outlet of the serpentine pipe.

4. The metal material surface oxidation treatment apparatus according to claim 3, characterized in that: The stirring device includes a motor located at the bottom of the processing tank, with the motor shaft extending upwards from the bottom of the processing tank into the processing tank, and stirring blades fixedly connected to the shaft at the bottom of the processing tank.

5. A method for processing metal material surface oxidation treatment apparatus as described in claim 4, characterized in that: Includes the following steps: (1) Pre-treatment of metal parts before anodizing: Press the pressure plate to drive the second connecting plate to move inward, and drive the first connecting plate to move inward through the second connecting plate. When the first connecting plate moves inward, it will squeeze the spring. At the same time, the first connecting plate drives the third connecting plate to move inward and the clamping plate to retract inward. Then, put the metal parts under the hollow column and then release the pressure plate. At this time, the spring's rebound force pushes the first connecting plate outward. The first connecting plate drives the clamping plate to extend outward through the third connecting plate and press against the metal parts for stable fixation. Then, hang the hook on the conductive rod and inject electrolyte into the treatment tank until the metal parts are submerged in the electrolyte and stop injecting. (2) Then the motor drives the stirring blade to rotate through the shaft. The stirring blade stirs the electrolyte to remove the air bubbles attached to the surface of the metal workpiece. Then the battery starts to discharge. The positive current will be introduced into the metal workpiece through the second wire, the conductive rod, the hook and the hollow column. At the same time, the negative current will be introduced into the electrolyte through the first wire and the conductive sheet. Thus, the metal workpiece will start to undergo anodizing. During the oxidation process, the suction fan will input the generated hydrogen gas into the exhaust pipe through the suction hood, the gas supply pipe and the three-way pipe, and then discharge it uniformly through the exhaust pipe. (3) During the oxidation process, the electrolyte temperature will rise. At this time, the coolant in the serpentine tube will exchange heat with the electrolyte. The water pump will input the heated coolant in the serpentine tube into the radiator for cooling. Then the cooled coolant will flow back into the serpentine tube.

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