Cathode piece unit and metal piece electrochemical deposition coating device

Abstract

The utility model discloses a cathode piece unit and a metal piece electrochemical deposition coating device, and belongs to the technical field of electrochemistry. The device comprises an electroplating pool, an anode piece unit, a cathode piece unit and a current output unit, the cathode piece unit comprises a cathode piece and a cathode supporting piece, the cathode supporting piece comprises a rotating table, a rotating shaft and a rotating power component, and the rotating table comprises a first fastener used for fixing a piece to be electroplated and a second fastener located below the first fastener; the conductive plate is positioned between the first fastener and the second fastener; the rotating shaft penetrates through the through hole of the second fastener, the two ends of the rotating shaft are connected with the rotating table and the rotating power component respectively, and the rotating power component transmits power to the rotating table through the rotating shaft. A built-in wire is arranged in the rotating shaft in a penetrating mode, and the head of the built-in wire is arranged on the second fastener in a pressing mode through a current-conducting plate. The coating prepared by the device is a porous coating with a large central hole and small peripheral holes, and the holes are gradually reduced along the rotation center.

Description

Technical Field

[0001] This utility model belongs to the field of electrochemical technology, and more specifically, relates to a cathode unit and an electrochemical deposition coating device for metal parts. Background Technology

[0002] Electroplating is a surface treatment technology whose core principle is to deposit a thin film of another metal or alloy onto a metal surface through electrolysis. This process not only effectively prevents metal oxidation (such as rust) but also significantly improves the metal's wear resistance, conductivity, reflectivity, corrosion resistance, and even enhances its aesthetics, playing a crucial role in many fields. Especially in machinery, hardware, aerospace, and shipbuilding, electroplating technology not only improves the durability and aesthetics of products but also enhances their functionality. Our company produces road guardrails and other products made of metal plates. While ordinary spraying can be used for some outdoor guardrails, electroplating is required for guardrail connectors in special environments. The principle of electrodeposition of porous structures mainly involves adjusting variables such as output current, electrolyte concentration, and deposition time to control macroscopic characteristics such as the bottom pore size and composite pore size, as well as the microstructure.

[0003] To address the aforementioned issues, a search revealed Chinese patent CN215925118U, which discloses a novel rotating electrodeposition apparatus. The apparatus includes an outer tank with a top cover on its top, on which electrode elements are mounted. An internal support frame houses the electrodeposition chamber. A support column and a rotating column are fixedly connected to the bottom axis of the support frame. The rotating column is rotatably connected via a thrust bearing and a bearing seat. The bottom end of the rotating column passes through a lower groove and is fixedly connected to a driven wheel. A drive motor is also mounted on the outer wall of the outer tank. This apparatus uses the rotating column as a support component connected to the bearing to bear axial loads and facilitate natural deceleration. The rotating disk serves as the carrier of the support frame and as a safety component to prevent sudden detachment of the support column.

[0004] Although this patent achieves the rotation of the electrodeposition device, the centrifugal disturbance of bubbles affects the deposited coating during the deposition of porous materials, making it impossible to obtain porous materials with controllable morphology. Utility Model Content

[0005] 1. The problem to be solved

[0006] In view of the technical problems of the prior art, the present invention provides an electrochemical deposition coating device for metal parts. The device can achieve controllable morphology of porous coatings, thereby improving the wear resistance and corrosion resistance of metal plates.

[0007] 2. Technical Solution

[0008] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0009] The cathode unit of this utility model includes a cathode support, which includes a rotary table, a rotary shaft, and a rotary power component for providing rotational power.

[0010] The rotating table includes a first fastener, a second fastener, and a conductive plate;

[0011] The first fastener is used to fix the workpiece to be plated, and has a cavity in the middle for accommodating the workpiece to be plated, the cavity penetrating the first fastener; the second fastener is located below the first fastener, and has a through hole in the middle corresponding to the cavity; a conductive plate is provided between the first fastener and the second fastener for conducting electricity;

[0012] The rotating shaft passes through the through hole of the second fastener, and its two ends are connected to the rotating table and the rotating power component, respectively. The rotating power component transmits power to the rotating table through the rotating shaft. An internal wire is inserted through the rotating shaft, and the head of the internal wire is pressed onto the second fastener through a conductive plate, connecting the workpiece to be plated with an external power source to form a circuit.

[0013] The above-mentioned cathode unit is applied to a metal electrochemical deposition coating apparatus, which includes an electroplating tank, an anode unit, a cathode unit, and a current output unit.

[0014] Electroplating tank, used to hold electroplating solution;

[0015] Anode unit, used to provide the conductive material required for coating;

[0016] A cathode unit includes a cathode support, which includes a rotary table, a rotary shaft, and a rotary power component for providing rotational power.

[0017] The rotating table includes a first fastener, a second fastener, and a conductive plate;

[0018] The first fastener is used to fix the workpiece to be plated, and has a cavity in the middle for accommodating the workpiece to be plated, the cavity passing through the first fastener; the second fastener is located below the first fastener, and has a through hole in the middle corresponding to the cavity; a conductive plate is provided between the first fastener and the second fastener for conducting electricity; an internal wire is placed below the conductive plate, and the internal wire is fixed by the conductive plate and the second fastener;

[0019] The rotating shaft passes through the through hole of the second fastener and is used to drive the rotating table to rotate.

[0020] In some possible embodiments of this utility model, the rotating power component is connected to the rotary table via a rotating shaft to provide rotational power to the rotating shaft. It includes a driving wheel and a driven wheel, which are connected by a belt. The rotary table is connected to the driven wheel via the rotating shaft, and the driving wheel is connected to a drive power source to provide power to the driving wheel.

[0021] In some possible embodiments of this utility model, the current output unit includes a power supply, which is connected to an external wire of the cathode unit via a positive wire, and the external wire passes through a rotating shaft and is connected to the tail of an internal wire; the power supply is connected to a conductive material via a negative wire.

[0022] Furthermore, the anode unit includes a conductive material and an insulating sleeve. The insulating sleeve is fitted onto the conductive material, which has equally spaced graduations in mm. These graduations are used to control the amount of electroplating coating. When it is necessary to control the anode area, the area immersed in the electroplating solution can be controlled by the graduations.

[0023] In some possible embodiments of this utility model, the built-in wire is composed of one or more copper wires. To further improve conductivity, the head wire is disassembled and dispersed in a flower-like pattern between the conductive plate and the second fastener.

[0024] In some possible embodiments of this utility model, the conductive plate, the built-in wire, and the external wire are made of metals with good electrical conductivity such as Cu and Ag.

[0025] The resulting coating is a porous coating with a large central pore and small peripheral pores. The pore size gradually decreases along the rotation center. The central pore diameter of the coating is 116.23–238.75 μm, and the peripheral pore diameter is 40.25–76.54 μm. The coating prepared by this invention exhibits a gradient change, with small peripheral pores and large central pores. The large central pore diameter facilitates the detachment of central bubbles, while the small peripheral pore diameter facilitates the refilling of surrounding liquid. This allows for a controllable gradient change in pore diameter from the center to the periphery. Compared to coatings with disordered pore sizes without rotation, the porous coating prepared by this method has a more regular structure and more controllable dimensions. Compared to coatings prepared by other rotation methods, this method is beneficial for further research on the enhancement mechanism of its application in the field of boiling phase change.

[0026] 3. Beneficial effects

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0028] (1) The coating obtained by the metal electrochemical deposition coating device of this utility model is a porous coating with a large central hole and a small surrounding hole. The hole gradually decreases along the rotation center. This coating is more suitable for surface modification research to enhance boiling heat transfer.

[0029] (2) The plating layer of the part to be plated obtained by this utility model is formed on only one side. Compared with the plating layer formed on multiple sides in the prior art, this utility model can achieve electroplating coating at specific positions, and it is more convenient to replace the cathode part to be plated. It can achieve the effect of continuous large-scale preparation and is more suitable for the production application of boiling phase change device.

[0030] (3) The device of this utility model can realize the rapid replacement of the part to be plated. Compared with the prior art, which requires opening the sealed cavity and removing the part to be plated, the part to be plated can be directly replaced after the electroplating is completed without disassembling the device. It is also applicable to the electroplating of parts of different shapes. The cavity shape of the upper fastener can be adjusted according to the shape of the part to be plated.

[0031] (4) The present invention uses one or more copper wires to form the external wires. The end wires are disassembled and fixed in a flower-like pattern between the conductive plate and the second fastener to further improve the conductivity and prevent poor contact.

[0032] (5) The conductive material in the anode unit of this utility model is provided with a scale, and the electroplating amount can be adjusted according to the scale. Attached Figure Description

[0033] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that these drawings are designed for illustrative purposes only and are not intended to limit the scope of this utility model. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural construction described herein and are not necessarily drawn to scale.

[0034] Figure 1 This is a schematic diagram of the structure of the electrochemical deposition coating device for metal parts according to this utility model;

[0035] Figure 2 This is a schematic diagram showing the disassembled structure of the rotary table and rotary shaft of this utility model;

[0036] Figure 3 This is a schematic diagram of the assembly of the rotary table and rotary shaft structure of this utility model;

[0037] Figure 4 This is a schematic diagram of the cathode unit structure of this utility model;

[0038] Figure 5 This is a schematic diagram of the anode unit structure of this utility model;

[0039] In the diagram: 100, electroplating tank; 110, electroplating solution;

[0040] 200. Anode unit; 210. Conductive material; 220. Insulating sleeve;

[0041] 300. Cathode unit; 310. Workpiece to be plated; 320. Rotary table; 321. First fastener; 322. Second fastener; 323. Conductive plate; 324. Built-in wire; 330. Rotating shaft; 340. Rotational power component; 341. Driving wheel; 342. Driven wheel; 343. Belt; 344. Drive power supply;

[0042] 400. Current output unit; 410. Power supply; 411. Positive wire; 412. Negative wire; 420. External wire. Detailed Implementation

[0043] The following detailed description of exemplary embodiments of the present invention refers to the accompanying drawings, which form part of the description, illustrating exemplary embodiments in which the present invention may be implemented. Although these exemplary embodiments have been described in sufficient detail to enable those skilled in the art to implement the present invention, it should be understood that other embodiments may be implemented and various changes may be made to the present invention without departing from the spirit and scope thereof. The more detailed description of embodiments of the present invention below is not intended to limit the scope of the claimed invention, but is merely illustrative and does not limit the description of the features and characteristics of the invention, in order to suggest the best mode for carrying out the invention and sufficient to enable those skilled in the art to implement it. Therefore, the scope of the present invention is defined only by the appended claims.

[0044] The following detailed description and exemplary embodiments of the present invention can be better understood in conjunction with the accompanying drawings, wherein the elements and features of the present invention are identified by reference numerals.

[0045] Example 1

[0046] like Figures 1 to 5 As shown, the electrochemical deposition coating apparatus for metal parts in this embodiment includes an electroplating tank 100, an anode unit 200, a cathode unit 300, and a current output unit 400. Each unit is manually controlled and adjusted. Alternatively, this embodiment can employ integrated signal control, for example, by connecting the units via wires and having a controller intelligently control the experimental process.

[0047] Combination Figure 2 , Figure 3 , Figure 4As shown, the cathode unit 300 of this embodiment includes a cathode support, which includes a rotary table 320, a rotary shaft 330, and a rotary power component 340 for providing rotational power.

[0048] As shown in Figure 2, the rotating table 320 includes a first fastener 321, a second fastener 322, and a copper plate 323.

[0049] Furthermore, in some embodiments, the first fastener 321 has a cavity penetrating through it for fixing the workpiece 310 to be plated. The workpiece 310 can be selected from one or more of copper, stainless steel, titanium alloy, galvanized steel sheet, carbon steel, and alloy steel. The second fastener 322 is located below the first fastener 321 and has a through hole corresponding to the cavity. A copper plate 323 is provided between the first fastener 321 and the second fastener 322 for conducting electricity. Below the copper plate 323... An internal wire 324 is placed inside the rotating shaft 330, which passes through the through hole of the second fastener 322. Its two ends are connected to the rotating table 320 and the rotating power component 340, respectively. The rotating power component 340 transmits power to the rotating table 320 through the rotating shaft 330. The internal wire 324 is inserted inside the rotating shaft 330. The head of the internal wire 324 is detached and distributed and pressed on the second fastener 322 through the conductive plate 323. An external wire 420 passes through the rotating shaft 330 and is connected to the internal wire 324.

[0050] In some embodiments, Figure 4 In this configuration, the rotating power component 340 includes a driving wheel 341, a driven wheel 342, and a drive power supply 344. The driving wheel 341 and the driven wheel 342 are connected by a belt 343. The driving wheel 341 is connected to the drive power supply 344 to provide power to the driving wheel 341. A rotating shaft 330 is inserted into the driven wheel 342. By adjusting the drive power supply 344, the rotational speed of the rotating shaft 330 is changed, thereby driving the rotation of the rotating table 320 to achieve electroplating of the coating on the rotating workpiece 310.

[0051] like Figure 5 As shown, the anode unit 200 of this utility model includes a conductive material 210 and an insulating sleeve 220. The insulating sleeve 220 is sleeved on the conductive material 210. The conductive material 210 is provided with a scale for controlling the amount of electroplating of the coating. When it is necessary to control the anode area, the area of ​​the conductive material 210 immersed in the electroplating solution 110 can be controlled by the scale.

[0052] like Figure 1As shown, the rotary table 320 and the rotary power component 340 are connected by a rotary shaft 330 and placed in the electroplating tank 100 containing the electroplating solution 110. The external wire 420 is connected to the negative wire 412, and the conductive material 210 is connected to the positive wire 411. In this way, it is connected to the power supply 410.

[0053] This embodiment provides a method for electrochemically depositing coatings on metal parts, the specific steps of which are as follows:

[0054] S1. Preparation of electroplating solution 110: Electroplating solution 110 is prepared using CuCl2 (1.35g), HCl (38%) (51.6mL) as solutes, and deionized water (48.4mL) as solvent. When the C in electroplating solution 110... Cu2+ =0.1M, C H+ =6.4M, complete the preparation of electroplating solution 110.

[0055] S2. Assembly Device: The workpiece 310 to be plated is made of ordinary carbon steel. The conductive material 210 of the anode unit 200 is also an ordinary carbon steel part with a corresponding size of 2.1cm*4cm, and scales are engraved on it. Adjust the insulating sleeve 220 to ensure that the area of ​​the anode entering the electroplating solution is constant. In this embodiment, the area of ​​the anode part is 2.1cm*2.8cm. Before the experiment, place the workpiece 310 to be plated in the cavity of the first fastener 321. After connecting the rotating table 320 to the rotating shaft 330, The cathode unit 300 is placed on the driven wheel 342 and connected to the rotating power component 340. The connected cathode unit 300 is placed in the electroplating tank 100, and the internal wire 324 is connected to the external wire 420. The conductive material 210 of the anode unit 200 is connected to the positive terminal of the power supply 410. The external wire 420 is connected to the negative wire 412 of the power supply 410. 100ml of the prepared electroplating solution 110 is poured into the electroplating tank 100.

[0056] S3. Starting device: Start the drive power supply 344 connected to the rotating power component 340 to control the rotation speed of the rotary table 320 to 400 r / min;

[0057] Simultaneously, the power output unit 400 is activated, and the conductive material 210 is directly contacted with the negative terminal of the power supply 410. At this time, it is in a short circuit state. The current is adjusted to the required current. In this embodiment, the output current is adjusted to 1.75A. Due to the limitation of the material resistance value, the rated voltage is about 1 to 6V. To prevent current fluctuations, the output voltage is adjusted to 10V. Then, the conductive material 210 is separated from the negative terminal of the power supply 410.

[0058] S4. Start electroplating: Place the connected anode unit 200 in the electroplating tank 100. At this time, the electroplating process begins. Select a deposition time of 60 seconds. When the required deposition time is reached, remove the anode unit 200 and turn off the power supply 410 of the power output unit 400 and the drive power supply 344 of the rotating power component 340.

[0059] Remove the part to be plated, 310, to complete the electroplating process.

Claims

1. A cathode unit, comprising a cathode support, characterized in that, The cathode support includes a rotary table (320), a rotary shaft (330), and a rotary power component (340) for providing power to the rotary table (320). The rotating platform (320) includes a first fastener (321) for fixing the workpiece to be plated (310), with a cavity in the middle for accommodating the workpiece to be plated (310); a second fastener (322) located below the first fastener (321), with a through hole in the middle corresponding to the cavity; and a conductive plate (323) located between the first fastener (321) and the second fastener (322). The rotating shaft (330) passes through the through hole of the second fastener (322), and its two ends are connected to the rotating table (320) and the rotating power component (340) respectively. The rotating power component (340) transmits power to the rotating table (320) through the rotating shaft (330). An internal wire (324) is installed inside the rotating shaft (330), and the head of the internal wire (324) is pressed onto the second fastener (322) through the conductive plate (323).

2. The cathode unit according to claim 1, characterized in that, The rotating power component (340) includes a driving wheel (341) and a driven wheel (342), which are connected by a belt (343). The rotating table (320) is connected to the driven wheel (342) via a rotating shaft (330). The driving wheel (341) is connected to a drive power source (344) to provide power to the driving wheel (341).

3. An apparatus for electrochemical deposition coating of metal parts, characterized in that, include: Electroplating tank (100) is used to hold electroplating solution (110). An anode unit (200) is used to provide the conductive material (210) required for coating. A cathode unit (300) is a cathode unit (300) as described in any one of claims 1-2, comprising a cathode support member, the cathode support member comprising a rotary table (320), a rotary shaft (330), and a rotary power member (340) for providing power to the rotary table (320). The rotating table (320) includes a first fastener (321) for fixing the workpiece to be plated (310), with a cavity in the middle for accommodating the workpiece to be plated (310), the cavity penetrating the first fastener (321); a second fastener (322) located below the first fastener (321), with a through hole in the middle corresponding to the cavity; and a conductive plate (323) located between the first fastener (321) and the second fastener (322), with an internal wire (324) placed below the conductive plate (323), the internal wire (324) being fixed by the conductive plate (323) and the second fastener (322); The rotating shaft (330) passes through the through hole of the second fastener (322) and is used to drive the rotating table (320) to rotate; The rotating power component (340) is connected to the rotary table (320) via a rotating shaft (330) and is used to provide rotational power to the rotating shaft (330); The current output unit (400) includes a power supply (410), which is connected to the rotary table (320) via a positive wire (411) and to the anode unit (200) via a negative wire (412).

4. The electrochemical deposition coating apparatus for metal parts according to claim 3, characterized in that, The rotating power component (340) includes a driving wheel (341) and a driven wheel (342), which are connected by a belt (343). The rotating table (320) is connected to the driven wheel (342) via a rotating shaft (330). The driving wheel (341) is connected to a drive power source (344) to provide power to the driving wheel (341).

5. The electrochemical deposition coating apparatus for metal parts according to claim 4, characterized in that, The power supply (410) is connected to one end of an external wire (420) via a positive wire (411), and the other end of the external wire (420) passes through a rotating shaft (330) and is connected to the tail of an internal wire (324); the power supply (410) is connected to a conductive material (210) via a negative wire (412).

6. The electrochemical deposition coating apparatus for metal parts according to claim 5, characterized in that, The anode unit (200) includes a conductive material (210) and an insulating sleeve (220), the insulating sleeve (220) being fitted onto the conductive material (210).

7. The electrochemical deposition coating apparatus for metal parts according to claim 6, characterized in that, The conductive material (210) has equally spaced graduations.

8. The electrochemical deposition coating apparatus for metal parts according to claim 7, characterized in that, The built-in conductor (324) is composed of one or more copper wires, and the ends of the built-in conductor (324) are dispersed and fixed between the conductive plate (323) and the second fastener (322).

9. The electrochemical deposition coating apparatus for metal parts according to claim 8, characterized in that, The conductive plate (323), the built-in wire (324), and the external wire (420) are made of Cu or Ag.

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