Device and method for repairing titanium oxide wear-resistant protective layer through in-situ anodic oxidation
Through the in-situ anodizing repair method, the problems of insufficient adhesion and equipment disassembly damage in the repair of titanium oxide protective layer are solved, and efficient and low-cost titanium oxide protective layer repair is achieved, which is suitable for a variety of workpiece shapes and sizes.
Patent Information
- Application Number
- CN202510880796.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-27
- Publication Date
- 2025-10-10
AI Technical Summary
The existing methods for repairing titanium oxide protective layers have problems such as insufficient adhesion, unevenness, high cost, low efficiency, and inability to handle complex structures, and are prone to causing damage to equipment during disassembly.
The in-situ anodizing repair method is adopted. After mechanical polishing pretreatment, an adjustable mold and a vacuum fixing module are used to perform electrolyte covering and oxidation under pulse voltage to form a uniform titanium oxide protective layer.
It achieves efficient repair without disassembling the equipment, reduces downtime and costs, is suitable for workpieces of various shapes and sizes, has a wide range of repairs, and is environmentally friendly and pollution-free.
Smart Images
Figure CN120758949A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of anodic oxidation repair, in particular to a device and method for in-situ anodic oxidation repair of a titanium oxide wear-resistant protective layer. Background Art
[0002] Titanium oxide has excellent wear resistance, corrosion resistance, and high-temperature stability, enabling it to maintain good performance under extreme conditions. However, over time and changes in usage conditions, the titanium oxide protective layer may be subject to wear, scratches, and chemical corrosion, resulting in a decrease in its protective performance, necessitating repair of the protective layer.
[0003] The methods for repairing protective layers in the prior art mainly include spraying, brushing, and dipping. These methods are relatively simple, but the repaired protective layer usually has insufficient adhesion, is easy to peel off, and is often less wear-resistant and corrosion-resistant than the original protective layer. In addition, the prior art may produce uneven coatings during the repair process, affecting the overall performance, and requires a long curing time, resulting in increased downtime and higher maintenance costs. At the same time, it cannot avoid secondary damage caused by disassembly of the workpiece; the application scope of the repair methods of the prior art is also limited. For example, laser micro-cladding is suitable for repairing local micro cracks, but is inefficient and costly for large-scale repairs; plasma spraying requires special spraying equipment and is difficult to handle deep holes or inner cavity structures; sol-gel infiltration can only repair nano-scale cracks and is ineffective for macro holes or peeling. Summary of the Invention
[0004] In order to solve the above-mentioned problems in the prior art, the present invention provides a device and method for in-situ anodizing and repairing titanium oxide wear-resistant protective layer. The invention first pre-treats the damaged area of the workpiece to be repaired by mechanical grinding; then, a suitable mold is selected according to the shape of the workpiece, and the mold is adsorbed and fixed to the surface of the workpiece to be repaired by a vacuum pump; secondly, the electrolyte is pumped into the mold so that the electrolyte covers the electrode surface; finally, anodizing is performed under pulse voltage conditions, and a uniform titanium oxide wear-resistant protective layer is obtained on the surface of the workpiece. The application of this invention avoids irreversible damage caused by equipment disassembly during repair, reduces equipment downtime, and has the characteristics of low cost and high efficiency; at the same time, by designing replaceable and adjustable molds, it is suitable for workpieces of various shapes and sizes, and has a wider range of applications. In order to achieve the above-mentioned purpose, the technical solution is as follows: In one aspect, the present invention provides a device for in-situ anodic oxidation repair of a titanium oxide wear-resistant protective layer, the device comprising: A mobile support module is used to support the electrolytic mold module and adjust the relative position between the electrolytic mold module and the damaged workpiece, while providing mobile support for the anodizing repair device; An electrolyte module, used to prepare and store electrolyte using water and reagents, and pump the electrolyte into the electrolytic mold module to cover the cathode of the electrolytic mold module and the surface of the damaged workpiece; The electrolytic mold module is used to fix the damaged workpiece and provide a carrier for the electrolyte for directionally repairing the damaged part of the damaged workpiece; A vacuum fixing module, used for fixing the damaged workpiece and the electrolytic mold module; A power supply module, used for providing a pulse voltage to the anodizing repair device; The damaged workpiece is used as the anode of the anodizing repair device.
[0005] Optionally, the mobile support module includes: A device base, used as a support platform for the mobile support module; A moving wheel, used for moving the anodizing repair device, the moving wheel being mounted on the lower part of the device base; A support column, used to adjust the height of the electrolytic mold module relative to the damaged workpiece; A limiting unit, used for fixing the height position of the electrolysis mold module, wherein the limiting unit is installed on the support column; A rotating shaft, used to adjust the angle of the electrolytic mold module relative to the damaged workpiece; A first slide rail is used to adjust the horizontal distance between the electrolytic mold module and the damaged workpiece; The first fastening nut is used to fix the position of the electrolysis mold module on the first slide rail, and the first fastening nut is installed on the first slide rail.
[0006] Optionally, the electrolyte module includes: a liquid storage tank, used for storing the electrolyte; A liquid adding port, used for adding water and reagents, the liquid adding port being located at the upper portion of the liquid storage tank; an agitator, used to agitate the water and the reagent to prepare the electrolyte, the agitator being located at the bottom of the liquid storage tank; A water pump is used to pump the electrolyte into the electrolysis mold module.
[0007] Optionally, the electrolysis mold module includes: The mold insulating shell is used as the shell of the electrolytic mold module and provides insulation protection for the anodizing electrolysis process; a second slide rail, for achieving sliding adjustment of the cathode plate, adjusting the relative position of the cathode plate and the damaged workpiece, the second slide rail being fixed to the inner side of the insulating shell of the mold, the second slide rail comprising a track and a moving block, the track being fixed to the insulating shell of the mold, and the moving block being connected to the cathode plate; The cathode plate is used as the cathode in the anodic oxidation electrolysis process, and the cathode plate is fixed on the second slide rail and can slide along the second slide rail; a flexible mold material for carrying the electrolyte, the flexible mold material being in contact with the damaged workpiece, the outer side of the flexible mold material being in contact with the cathode plate, and the inner side of the flexible mold material being in contact with the damaged workpiece; a spring, used for elastically supporting the damaged workpiece; A handle, used to adjust the positions of the moving block and the cathode plate, the handle being fixed to the moving block; The second fastening nut is used to fasten the handle so that the flexible mold material is tightly attached to the damaged workpiece.
[0008] Optionally, the electrolytic mold module is designed in advance according to the applicable scenario of the damaged workpiece and has different shapes; the anodizing repair device repairs different damaged workpieces by matching the electrolytic mold modules with different shapes.
[0009] Optionally, the vacuum fixing module includes: a vacuum pump for drawing a vacuum between the surface of the damaged workpiece and the electrolytic mold module; A stop valve, used for vacuum control and pressure recovery control between the surface of the damaged workpiece and the electrolytic mold module; a pressure gauge for detecting a vacuum degree between the surface of the damaged workpiece and the electrolytic mold module; The suction cup is used to absorb and fix the damaged workpiece.
[0010] Optionally, the power module includes: A power supply, used to provide electrolytic power for the anodizing repair device; A power switch, used to power on and off the anodizing repair device for electrolysis; A wire is used to connect the positive electrode of the power supply with the damaged workpiece, and the negative electrode of the power supply with the cathode plate.
[0011] In another aspect, the present invention provides a method for in-situ anodizing and repairing a titanium oxide wear-resistant protective layer. The method for in-situ anodizing and repairing a titanium oxide wear-resistant protective layer is implemented by an apparatus for in-situ anodizing and repairing a titanium oxide wear-resistant protective layer. The method comprises: S1. Pre-treating the damaged workpiece by removing the damaged protective layer through mechanical grinding to obtain a pre-treated damaged workpiece; S2. Based on the pre-treated damaged workpiece, a suitable electrolytic mold is selected and installed on the unused anodizing repair device to obtain a first-stage repair device; S3. Adjusting the height of the support column and the angle of the rotating shaft of the first-stage repair device to adjust the posture of the electrolytic mold so that the electrolytic mold adapts to the pretreated damaged workpiece, thereby obtaining a second-stage repair device. S4. activating a vacuum pump according to the second-stage repair device to establish a vacuum state between the electrolytic mold and the pretreated damaged workpiece surface, thereby obtaining a third-stage repair device; S5. Add water and reagents to the liquid storage tank, start the stirrer and stir to obtain an electrolyte; S6. Based on the third-stage repair device and the electrolyte, extract the electrolyte and inject it into the electrolysis mold so that the electrolyte completely covers the electrode surface of the electrolysis mold, thereby obtaining a fourth-stage repair device; S7. According to the repair device of the fourth stage, the positive pole of the power supply is connected to the pre-treated damaged workpiece, and the negative pole is connected to the cathode plate. The power supply is turned on, and the electrolysis voltage, cycle, duty cycle and time of the power supply are controlled to anodize the surface of the pre-treated damaged workpiece to obtain a repaired damaged workpiece.
[0012] Compared with the prior art, the technical solution of the present invention has at least the following beneficial effects: On the one hand, the above scheme adopts an in-situ repair method, and the damaged workpiece does not need to be disassembled during the repair process, which reduces downtime, improves production efficiency and reduces costs; on the other hand, it adopts an anodizing method, which is green, environmentally friendly and pollution-free, and the electrolyte used is environmentally friendly; on the third hand, molds of different shapes and sizes are designed and selected for use according to the actual situation of the workpiece, with a wide range of applications; on the fourth hand, the mold support component has a rotating shaft, adjustable support columns, and sliding rails, which can adjust the position of the mold relative to the damaged workpiece, making it more flexible and efficient to use and having more application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0014] Figure 1 This is a system block diagram of an embodiment of a device for repairing a titanium oxide wear-resistant protective layer by in-situ anodic oxidation according to the present invention; Figure 2 This is a schematic structural diagram of a non-working state of an embodiment of a device for repairing a titanium oxide wear-resistant protective layer by in-situ anodic oxidation according to the present invention; Figure 3 This is a schematic structural diagram of the working state of an embodiment of the device for repairing a titanium oxide wear-resistant protective layer by in-situ anodic oxidation according to the present invention; Figure 4 This is an enlarged structural diagram of the handle portion of an embodiment of the device for repairing a titanium oxide wear-resistant protective layer by in-situ anodic oxidation according to the present invention; Figure 5 The present invention is a flowchart of an embodiment of a method for repairing a titanium oxide wear-resistant protective layer by in-situ anodic oxidation.
[0015] Explanation of the numbers in the figure: moving wheel 1, device base 2, power switch 3, power supply 4, support column 5, rotating shaft 6, vacuum pump 7, stop valve 8, pressure gauge 9, wire 10, liquid storage tank 11, agitator 12, liquid filling port 13, water pump 14, first slide rail 15, first fastening nut 16, mold insulating shell 17, second slide rail 18, cathode plate 19, damaged workpiece 20, spring 21, suction cup 22, handle 23, second fastening nut 24, electrolytic mold 25, limit unit 26, flexible mold material 27, track 181, moving block 182. DETAILED DESCRIPTION
[0016] The technical solution of the present invention is described below in conjunction with the accompanying drawings.
[0017] In the embodiments of the present invention, words such as "exemplarily" and "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as an "exemplary" in the present invention should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of the word "exemplary" is intended to present concepts in a concrete manner. Furthermore, in the embodiments of the present invention, "and / or" can mean both or either of the two.
[0018] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.
[0019] like Figure 1 The system block diagram of the embodiment of the device for repairing titanium oxide wear-resistant protective layer by in-situ anodic oxidation of the present invention is shown as follows: Figure 2 The non-working state structural diagram of the embodiment of the in-situ anodic oxidation repairing titanium oxide wear-resistant protective layer of the present invention is shown as follows Figure 3 The schematic diagram of the working state structure of an embodiment of the device for in-situ anodic oxidation repair of titanium oxide wear-resistant protective layer of the present invention is shown. The present invention provides a device for in-situ anodic oxidation repair of titanium oxide wear-resistant protective layer, which includes: a mobile support module, an electrolyte module, an electrolysis mold module, a vacuum fixing module, a power supply module, and a damaged workpiece 20; A mobile support module is used to support the electrolytic mold module and adjust the relative position between the electrolytic mold module and the damaged workpiece 20, while providing mobile support for the anodizing repair device; Specifically, the mobile support module comprises: a device base 2 serving as a support platform of the mobile support module; a mobile wheel 1 for moving the anodizing repair device, the mobile wheel 1 being installed at the lower part of the device base 2; a support column 5 for adjusting the height of the electrolytic mold module relative to the damaged workpiece 20; a limiting unit 26 for fixing the position of the electrolytic mold module in height, the limiting unit 26 being installed on the support column 5; a rotating shaft 6 for adjusting the angle of the electrolytic mold module relative to the damaged workpiece 20; a first sliding rail 15 for adjusting the horizontal distance of the electrolytic mold module relative to the damaged workpiece 20; a first fastening nut 16 for fixing the position of the electrolytic mold module on the first sliding rail 15, the first fastening nut 16 being installed on the first sliding rail 15; an electrolyte module for preparing, storing electrolyte by water and reagents, and pumping the electrolyte into the electrolytic mold module and covering the cathode of the electrolytic mold module and the surface of the damaged workpiece 20; Specifically, the electrolyte module comprises: a liquid storage tank 11 for storing the electrolyte; a liquid adding port 13 for adding water and reagents, the liquid adding port 13 being located at the upper part of the liquid storage tank 11; a stirrer 12 for stirring the water and the reagents to prepare the electrolyte, the stirrer 12 being located at the bottom of the liquid storage tank 11; a water pump 14 for pumping the electrolyte into the electrolytic mold module.
[0020] the electrolytic mold module for fixing the damaged workpiece 20, providing a carrier for the electrolyte to repair the damaged part of the damaged workpiece 20; Specifically, the electrolytic mold module comprises: a mold insulation shell 17 for serving as the shell of the electrolytic mold module and providing insulation protection for the anodizing electrolysis process; a second sliding rail 18 for realizing sliding adjustment of a cathode plate 19, adjusting the relative position of the cathode plate 19 and the damaged workpiece 20, the second sliding rail 18 being fixed on the inner side of the mold insulation shell 17, the second sliding rail 18 comprising a rail 181 fixed on the mold insulation shell 17 and a moving block 182 connected with the cathode plate 19; the cathode plate 19 for serving as the cathode of the anodizing electrolysis process, the cathode plate 19 being fixed on the second sliding rail 18 and being capable of sliding along the second sliding rail 18; A flexible mold material 27 is used to carry the electrolyte. The flexible mold material 27 is attached to the damaged workpiece 20 . The outer side of the flexible mold material 27 is in contact with the cathode plate 19 , and the inner side of the flexible mold material 27 is in contact with the damaged workpiece 20 . A spring 21, used for elastically supporting the damaged workpiece 20; The handle 23 is used to adjust the position of the moving block 182 and the cathode plate 19. The handle 23 is fixed to the moving block 182. The partial enlarged view of the handle 23 is shown in FIG. Figure 4 ; The second fastening nut 24 is used to fasten the handle 23 so that the flexible mold material 27 is tightly attached to the damaged workpiece 20 .
[0021] Furthermore, the electrolytic mold module is designed in advance according to the applicable scenario of the damaged workpiece 20 and has different shapes; the anodizing repair device repairs different damaged workpieces 20 by matching the electrolytic mold modules with different shapes.
[0022] A vacuum fixing module, used to fix the damaged workpiece 20 and the electrolytic mold module; Specifically, the vacuum fixing module includes: A vacuum pump 7, used for evacuating the space between the surface of the damaged workpiece 20 and the electrolytic mold module; A stop valve 8 is used for vacuum control and pressure recovery control between the surface of the damaged workpiece 20 and the electrolytic mold module; A pressure gauge 9 is used to detect the vacuum degree between the surface of the damaged workpiece 20 and the electrolytic mold module; The suction cup 22 is used to absorb and fix the damaged workpiece 20 .
[0023] A power supply module, used for providing a pulse voltage to the anodizing repair device; Specifically, the power module includes: Power supply 4, used to provide electrolytic power for the anodizing repair device; Power switch 3, used to power on and off the anodizing repair device for electrolysis; A wire 10 is used to connect the positive electrode of the power source 4 to the damaged workpiece 20, and the negative electrode of the power source 4 to the cathode plate 19; Furthermore, the power supply 4 uses pulse electrolysis to promote the uniform growth of the oxide film and reduce film defects. The electrolysis voltage, cycle, duty cycle and time are set according to actual needs to perform anodization and repair the titanium oxide wear-resistant protective layer.
[0024] The damaged workpiece 20 is used as the anode of the anodizing repair device.
[0025] like Figure 5is a flow chart of an embodiment of a method for repairing a titanium oxide wear-resistant protective layer by in-situ anodic oxidation, which shows a method for repairing a titanium oxide wear-resistant protective layer by in-situ anodic oxidation provided by the present application, and the method for repairing a titanium oxide wear-resistant protective layer by in-situ anodic oxidation is realized by a device for repairing a titanium oxide wear-resistant protective layer by in-situ anodic oxidation; Specifically, the method for repairing a titanium oxide wear-resistant protective layer by in-situ anodic oxidation comprises: S1, pretreating a damaged workpiece to remove a damaged protective layer by mechanical polishing to obtain a pretreated damaged workpiece; S2, according to the pretreated damaged workpiece, selecting a suitable electrolytic mold 25 and installing it on a non-working anodic oxidation repair device to obtain a first-stage repair device; S3, according to the first-stage repair device, adjusting the pose of the electrolytic mold 25 by adjusting the height of the support column and the angle of the rotating shaft of the first-stage repair device, so that the electrolytic mold 25 is suitable for the pretreated damaged workpiece, to obtain a second-stage repair device; S4, according to the second-stage repair device, activating a vacuum pump to establish a vacuum state between the electrolytic mold 25 and the surface of the pretreated damaged workpiece to obtain a third-stage repair device; S5, adding water and reagents into a liquid storage tank and starting a stirrer to stir to obtain an electrolyte; S6, according to the third-stage repair device and the electrolyte, extracting the electrolyte and injecting it into the electrolytic mold 25, so that the electrolyte completely covers the electrode surface of the electrolytic mold 25, to obtain a fourth-stage repair device; S7, according to the fourth-stage repair device, connecting the positive pole of a power supply to the pretreated damaged workpiece and connecting the negative pole to a cathode plate, turning on the power supply, controlling the electrolysis voltage, period, duty cycle and time of the power supply, and performing anodic oxidation on the surface of the pretreated damaged workpiece to obtain a repaired damaged workpiece.
[0026] Further, for a pipeline workpiece, the anodic oxidation repair process is as follows: First, the surface of the damaged workpiece is pretreated by polishing to remove part of the protective layer on the surface of the damaged workpiece, so that the thickness of the residual protective layer is the same as that of the damaged part of the protective layer on the surface of the damaged workpiece. In the liquid storage tank, 3 mol L -1Phosphoric acid solution is used as the electrolyte. A curved mold is selected. After adjusting the position and securing it, the handle is pulled to allow the device to circle the workpiece via the second slide rail. The rotating shaft and support column are adjusted to ensure the device is at the appropriate height and angle. The cathode plate is connected to the negative terminal of the power supply, and the positive terminal is connected to the damaged workpiece. The vacuum pump is started to establish a vacuum between the mold and the workpiece surface. The electrolyte is injected to cover the cathode and cathode surfaces. The power is turned on and the power-on voltage is set to 500 V, the power-off voltage to 0 V, the cycle to 30 seconds, the duty cycle to 0.5, and the effective power-on time to 10 hours. After oxidation is complete, the shut-off valve is opened to gradually return the pressure between the mold and the damaged workpiece to normal. The device is removed to obtain a uniform titanium oxide protective layer on the surface of the damaged workpiece, completing the repair.
[0027] Furthermore, for titanium alloy armor plates, the anodizing repair process is as follows: First, pre-treat the damaged workpiece surface by grinding away part of the protective layer on the damaged workpiece surface until the thickness of the protective layer remaining at the damaged part of the damaged workpiece surface is the same as that of the damaged workpiece surface protective layer. -1 Phosphoric acid solution is used as the electrolyte. A suitable mold is selected, adjusted, and then secured in place. The rotating shaft and support columns are adjusted to ensure the equipment is at the appropriate height and angle. The cathode plate is connected to the negative terminal of the power supply, and the positive terminal is connected to the damaged workpiece. A vacuum pump is activated to create a vacuum between the mold and the damaged workpiece surface. Electrolyte is injected to cover the cathode and cathode surfaces. The power supply is turned on, with the on-voltage set to 300 V, the off-voltage set to 0 V, the cycle set to 30 seconds, the duty cycle set to 0.5, and the effective on-time set to 8 hours. Once oxidation is complete, the shutoff valve is opened to gradually return the pressure between the mold and the damaged workpiece to normal. The equipment is then removed, resulting in a uniform titanium oxide protective layer on the damaged workpiece surface, completing the repair.
[0028] Furthermore, for the chemical reactor, the anodizing repair process is as follows: First, pre-treat the damaged workpiece surface by grinding away part of the protective layer on the damaged workpiece surface until the thickness of the protective layer remaining at the damaged part of the damaged workpiece surface is the same as that of the damaged workpiece surface protective layer. -1 Phosphoric acid solution is used as the electrolyte. A suitable mold is selected, adjusted, and then installed and secured. The rotating shaft and support columns are adjusted to ensure the equipment is at the appropriate height and angle. The cathode plate is connected to the negative terminal of the power supply, and the positive terminal is connected to the damaged workpiece. A vacuum pump is started to create a vacuum between the mold and the damaged workpiece surface. Electrolyte is injected to cover the cathode and cathode surfaces. The power supply is turned on, and the on-voltage is set to 100 V, the off-voltage to 0 V, the cycle to 30 seconds, the duty cycle to 0.4, and the effective on-time for 5 hours. Once oxidation is complete, the shut-off valve is opened to gradually return the pressure between the mold and the damaged workpiece to normal. The electrolyte is then drained and the equipment removed. A uniform titanium oxide protective layer is formed on the damaged workpiece surface, completing the repair.
[0029] Furthermore, for industrial pumps, the anodizing repair process is as follows: First, pre-treat the damaged workpiece surface by grinding away part of the protective layer on the damaged workpiece surface until the thickness of the protective layer remaining at the damaged part of the damaged workpiece surface is the same as that of the damaged workpiece surface protective layer. -1 Phosphoric acid solution is used as the electrolyte. A suitable mold is selected, adjusted, and then installed and secured. The rotating shaft and support columns are adjusted to ensure the equipment is at the appropriate height and angle. The cathode plate is connected to the negative terminal of the power supply, and the positive terminal is connected to the damaged workpiece. A vacuum pump is activated to create a vacuum between the mold and the damaged workpiece surface. Electrolyte is injected to cover the cathode and cathode surfaces. The power supply is turned on, with the on-voltage set to 100 V, the off-voltage set to 0 V, the cycle set to 20 seconds, the duty cycle set to 0.4, and the effective on-time set to 1 hour. Once oxidation is complete, the shutoff valve is opened to gradually return the pressure between the mold and the damaged workpiece to normal. The equipment is then removed, resulting in a uniform titanium oxide protective layer on the damaged workpiece surface, completing the repair.
[0030] Furthermore, for titanium alloy drill bits on oilfield equipment, the anodizing repair process is as follows: First, pre-treat the damaged workpiece surface by grinding away part of the protective layer on the damaged workpiece surface to make it the same thickness as the residual protective layer at the damaged part of the damaged workpiece surface protective layer. Then, prepare 0.8 mol L -1 Phosphoric acid solution is used as the electrolyte. A suitable mold is selected, adjusted, and then secured in place. The rotating shaft and support columns are adjusted to ensure the equipment is at the appropriate height and angle. The cathode plate is connected to the negative terminal of the power supply, and the positive terminal is connected to the damaged workpiece. A vacuum pump is activated to create a vacuum between the mold and the damaged workpiece surface. Electrolyte is injected to cover the cathode and cathode surfaces. The power supply is turned on, with the on-voltage set to 50 V, the off-voltage set to 0 V, the cycle set to 20 seconds, the duty cycle set to 0.3, and the effective on-time set to 30 minutes. Once oxidation is complete, the shutoff valve is opened to gradually return the pressure between the mold and the damaged workpiece to normal. The equipment is then removed, resulting in a uniform titanium oxide protective layer on the damaged workpiece surface, completing the repair.
[0031] Furthermore, for medical surgical instruments, the anodizing repair process is as follows: First, pre-treat the damaged workpiece surface by grinding away part of the protective layer on the damaged workpiece surface to make it the same thickness as the residual protective layer at the damaged part of the damaged workpiece surface protective layer. Then, prepare 0.5 mol L -1Phosphoric acid solution as electrolyte, select the appropriate mold, adjust the mold position after installation and fixed; And adjust the shaft and support column so that the equipment is at the appropriate height and angle. The cathode plate is connected to the negative electrode of the power supply, the positive electrode is connected to the damaged workpiece, the vacuum pump is started to establish a vacuum state between the mold and the surface of the damaged workpiece, the electrolyte is injected to cover the surface of the anode and cathode, the power supply is turned on to set the power-on voltage to 30 V, the power-off voltage to 0 V, the cycle to 10 seconds, the duty cycle to 0.2, the effective power-on time to 20 minutes, after oxidation, open the stop valve to gradually restore the normal pressure state between the mold and the damaged workpiece, remove the equipment, get a uniform titanium oxide protective layer on the surface of the damaged workpiece, and complete the repair.
[0032] The application provides a device and method for repairing a titanium oxide wear-resistant protective layer in situ by anodic oxidation. The application first mechanically polishes the damaged area of a workpiece to be repaired; then selects a suitable mold according to the shape of the workpiece, and adsorbs and fixes the mold on the surface of the workpiece to be repaired by a vacuum pump; secondly, pumps electrolyte into the mold to cover the surface of the electrode; finally, performs anodic oxidation under the condition of pulse voltage, and obtains a uniform titanium oxide wear-resistant protective layer on the surface of the workpiece. The application avoids irreversible damage caused by disassembly of the equipment during repair, reduces the downtime of the equipment, has the characteristics of low cost and high efficiency; at the same time, the application is suitable for workpieces of various shapes and sizes by designing replaceable and adjustable molds, and has a wider application range.
[0033] It can be understood that the application is described by the above embodiments, which should not be interpreted as a limitation on the embodiments and scope of the application. Those skilled in the art can make various changes or equivalent replacements to the features and embodiments without departing from the spirit and scope of the application. In addition, the features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the application. Therefore, the application is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application are within the scope of the application.
Claims
1. A device for in-situ anodic oxidation repair of titanium oxide wear-resistant protective layer, characterized in that: The device comprises: A mobile support module is used to support the electrolytic mold module and adjust the relative position between the electrolytic mold module and the damaged workpiece, while providing mobile support for the anodizing repair device; An electrolyte module, used to prepare and store electrolyte using water and reagents, and pump the electrolyte into the electrolytic mold module to cover the cathode of the electrolytic mold module and the surface of the damaged workpiece; The electrolytic mold module is used to fix the damaged workpiece and provide a carrier for the electrolyte for directionally repairing the damaged part of the damaged workpiece; a vacuum fixing module, used for fixing the damaged workpiece and the electrolytic mold module; A power supply module, used for providing a pulse voltage to the anodizing repair device; The damaged workpiece is used as the anode of the anodizing repair device.
2. The device for in-situ anodic oxidation repair of titanium oxide wear-resistant protective layer according to claim 1, characterized in that: The mobile support module includes: A device base, used as a support platform for the mobile support module; Moving wheels, used for moving the anodizing repair device, the moving wheels being mounted on the lower part of the device base; a support column for adjusting the height of the electrolytic mold module relative to the damaged workpiece; A limiting unit, used for fixing the height position of the electrolysis mold module, wherein the limiting unit is installed on the supporting column; a rotating shaft, used to adjust the angle of the electrolytic mold module relative to the damaged workpiece; a first slide rail, for adjusting the horizontal distance between the electrolytic mold module and the damaged workpiece; The first fastening nut is used to fix the position of the electrolysis mold module on the first slide rail, and the first fastening nut is installed on the first slide rail.
3. The device for in-situ anodic oxidation repair of titanium oxide wear-resistant protective layer according to claim 1, characterized in that: The electrolyte module comprises: a liquid storage tank, used for storing the electrolyte; A liquid adding port, used for adding water and reagents, the liquid adding port being located at the upper portion of the liquid storage tank; an agitator, used to agitate the water and the reagent to prepare the electrolyte, wherein the agitator is located at the bottom of the liquid storage tank; A water pump is used to pump the electrolyte into the electrolysis mold module.
4. The device for in-situ anodic oxidation repair of titanium oxide wear-resistant protective layer according to claim 1, characterized in that: The electrolytic mold module includes: A mold insulating shell, used as the shell of the electrolytic mold module and providing insulation protection for the anodizing electrolysis process; a second slide rail, for achieving sliding adjustment of the cathode plate, and adjusting the relative position of the cathode plate and the damaged workpiece, wherein the second slide rail is fixed to the inner side of the insulating shell of the mold, and comprises a track and a moving block, wherein the track is fixed to the insulating shell of the mold, and the moving block is connected to the cathode plate; The cathode plate is used as the cathode in the anodic oxidation electrolysis process, and the cathode plate is fixed on the second slide rail and can slide along the second slide rail; a flexible mold material, used for carrying the electrolyte, wherein the flexible mold material is in contact with the damaged workpiece, an outer side of the flexible mold material is in contact with the cathode plate, and an inner side of the flexible mold material is in contact with the damaged workpiece; a spring, for elastically supporting the damaged workpiece; A handle, used for adjusting the positions of the moving block and the cathode plate, wherein the handle is fixed to the moving block; The second fastening nut is used to fasten the handle so that the flexible mold material is tightly attached to the damaged workpiece.
5. The device for in-situ anodic oxidation repair of titanium oxide wear-resistant protective layer according to claim 4, characterized in that: The electrolytic mold module is designed in advance according to the applicable scenario of the damaged workpiece and has different shapes; the anodizing repair device repairs different damaged workpieces by matching the electrolytic mold modules with different shapes.
6. The device for in-situ anodic oxidation repair of titanium oxide wear-resistant protective layer according to claim 1, characterized in that: The vacuum fixing module comprises: a vacuum pump for evacuating a space between the surface of the damaged workpiece and the electrolytic mold module; A stop valve for controlling vacuum and restoring pressure between the surface of the damaged workpiece and the electrolytic mold module; a pressure gauge for detecting a vacuum degree between the surface of the damaged workpiece and the electrolytic mold module; The suction cup is used to absorb and fix the damaged workpiece.
7. The device for in-situ anodic oxidation repair of titanium oxide wear-resistant protective layer according to claim 1, characterized in that: The power module includes: A power supply, used to provide electrolytic power for the anodizing repair device; A power switch, used to power on and off the electrolysis of the anodizing repair device; A wire is used to connect the positive electrode of the power supply with the damaged workpiece, and the negative electrode of the power supply with the cathode plate.
8. A method for repairing a titanium oxide wear-resistant protective layer by in-situ anodizing, wherein the method is implemented by the device for repairing a titanium oxide wear-resistant protective layer by in-situ anodizing according to any one of claims 1 to 7, characterized in that: The method comprises: S1. Pre-treating the damaged workpiece by removing the damaged protective layer through mechanical grinding to obtain a pre-treated damaged workpiece; S2. Based on the pre-treated damaged workpiece, a suitable electrolytic mold is selected and installed on the unused anodizing repair device to obtain a first-stage repair device; S3. Using the first-stage repair device, adjusting the height of the support column and the angle of the rotating shaft of the first-stage repair device to adjust the posture of the electrolytic mold so that the electrolytic mold adapts to the pretreated damaged workpiece, thereby obtaining a second-stage repair device. S4. activating a vacuum pump according to the second-stage repair device to establish a vacuum state between the electrolytic mold and the pretreated damaged workpiece surface, thereby obtaining a third-stage repair device; S5. Add water and reagents to the liquid storage tank, start the stirrer and stir to obtain an electrolyte; S6. Based on the repair device of the third stage and the electrolyte, extract the electrolyte and inject it into the electrolysis mold so that the electrolyte completely covers the electrode surface of the electrolysis mold, thereby obtaining a repair device of the fourth stage; S7. According to the repair device of the fourth stage, the positive pole of the power supply is connected to the damaged workpiece after pretreatment, and the negative pole is connected to the cathode plate. The power supply is turned on, and the electrolysis voltage, cycle, duty cycle and time of the power supply are controlled to perform anodizing on the surface of the damaged workpiece after pretreatment to obtain a repaired damaged workpiece.