TiAl alloy gradient corrosion-resistant coating preparation device and process

Abstract

The invention discloses a TiAl alloy gradient anti-corrosion coating preparation device and process, and belongs to the field of metal coating manufacturing, the TiAl alloy gradient anti-corrosion coating preparation device comprises a segmented temperature control sintering furnace, a closed door plate, a hearth and a base material support, the closed door plate is arranged on the segmented temperature control sintering furnace through a rotating shaft, and the hearth is arranged on the base material support; the hearth is fixedly connected into the segmented temperature control sintering furnace. Through the design of the multi-dimensional dynamic balance anti-interference stabilizing assembly, the multi-dimensional dynamic balance anti-interference stabilizing assembly has the following advantages that the influence of thermal expansion and cold contraction is overcome, the self-adaptive adjusting function is achieved, and according to a traditional bolt fixing mode, when the temperature changes, due to the fact that the thermal expansion coefficients of a connecting piece and a heating rod are different, stress concentration is likely to be generated, and looseness is caused; the multi-dimensional dynamic balance anti-interference stabilizing assembly utilizes gas-aided design and can indirectly and dynamically adjust the limiting stability of the silicon carbide heating rod according to the temperature change.

Description

Technical Field

[0001] This invention belongs to the field of metal coating manufacturing, specifically relating to a device and process for preparing a TiAl alloy gradient anti-corrosion coating. Background Technology

[0002] In the fields of materials science and industrial manufacturing, segmented temperature-controlled sintering furnaces are widely used in the heat treatment processes of various materials, especially in the preparation of titanium anode coatings, where they play a crucial role. Through precise segmented temperature control, they can effectively improve the microstructure of the coating, significantly enhance its density and performance stability, thereby meeting the specific performance requirements of titanium anode coatings in different industrial scenarios.

[0003] However, current segmented temperature-controlled sintering furnaces face numerous technical challenges in the fixing, support, and installation of heating elements. Traditional methods of fixing heating elements mainly rely on ceramic insulators, nuts, screws, and other connectors to secure the heating rods. In the high-temperature operating environment of segmented temperature-controlled sintering furnaces, these connectors are prone to loosening due to the continuous effect of thermal expansion and contraction. Once the connectors loosen, the positional stability of the heating rod cannot be effectively guaranteed, leading to a series of serious problems. Displacement of the heating rod's position results in uneven temperature distribution within the furnace, causing inconsistent heating of the titanium anode coating during sintering, directly affecting the coating's quality and performance uniformity, and reducing product yield. Furthermore, loose heating rods may collide or rub against other components during operation, accelerating their own damage and causing harm to the internal structure of the furnace.

[0004] Meanwhile, the shortcomings of existing technologies become even more apparent during the vacuuming and protective gas introduction processes. When gas rushes into the furnace, it instantly triggers significant air vibrations. These intense vibrations severely impact the stability of the silicon carbide heating rods. Even if the heating rods are initially securely fixed, they are prone to loosening and displacement after repeated gas impacts. Moreover, existing technologies have significant deficiencies in fixing and maintaining these components, lacking effective countermeasures and failing to promptly detect and repair loosening of fixed parts caused by vibration, posing a significant threat to the long-term stable operation of the equipment.

[0005] Furthermore, the existing installation methods for heating rods are not very convenient. During routine equipment maintenance, heating rod replacement, and equipment overhaul, operators need to spend a lot of time and effort disassembling and installing the heating rods. The complicated installation steps not only reduce work efficiency but also increase labor costs. In some industrial production scenarios with high requirements for production continuity, the problem of poor heating rod installation convenience is particularly prominent. Once a heating rod malfunctions and needs to be replaced, the long downtime for installation will lead to production interruption and cause huge economic losses.

[0006] In summary, the existing technology for fixing and installing heating elements in segmented temperature-controlled sintering furnaces has become a bottleneck restricting the development of titanium anode coating preparation processes. There is an urgent need to develop a new fixing and installation technology to solve the problems of loosening caused by thermal expansion and contraction, instability affected by gas impact, and poor installation convenience, so as to meet the needs of modern industry for efficient, stable, and high-quality production. Summary of the Invention

[0007] The purpose of this invention is to provide a device and process for preparing a TiAl alloy gradient anti-corrosion coating, so as to solve the problems existing in the prior art.

[0008] To achieve the above objectives, the present invention provides a TiAl alloy gradient anti-corrosion coating preparation device, comprising: a segmented temperature-controlled sintering furnace, a closed door panel, a furnace chamber, and a substrate support. The closed door panel is mounted on the segmented temperature-controlled sintering furnace via a rotating shaft. The furnace chamber is fixedly connected inside the segmented temperature-controlled sintering furnace, and the substrate support is fixedly connected inside the furnace chamber.

[0009] It also includes: a multi-dimensional dynamic balance anti-interference stabilization component and a temperature processing redundancy protection component. The temperature processing redundancy protection component is set inside the multi-dimensional dynamic balance anti-interference stabilization component. The multi-dimensional dynamic balance anti-interference stabilization component is used to maintain the stability of the silicon carbide heating rod during thermal expansion and contraction, vacuuming, and the introduction of protective gas. The temperature processing redundancy protection component is used to maintain the stability of the device's components at high temperatures.

[0010] In one or more embodiments of the present invention, the multidimensional dynamic balance anti-interference stabilizing component includes an attachment arc body that is attached and fixedly connected to the inner wall of the furnace, the tail end of the attachment arc body is fixedly connected to a connecting member, and the bottom end of the connecting member is fixedly connected to a fixing groove.

[0011] In one or more embodiments of the present invention, a movable plate is slidably connected inside the attachment arc, a connecting rod is fixedly connected to the end face of the movable plate, a triangular block is fixedly connected to the end of the connecting rod away from the movable plate, a spring A is fixedly connected to the inner wall of the attachment arc, and a snap-fit ​​limiting strip is fixedly connected to the bottom end of the spring A.

[0012] In one or more embodiments of the present invention, a sliding plate is slidably connected in the fixed groove, an auxiliary groove is provided at the bottom of the fixed groove, the length of the auxiliary groove is less than the total length of the fixed groove, a limiting groove is provided at the outer end of the sliding plate, a conical groove is symmetrically provided at the tail end of the limiting groove, and an alignment pin is fixedly connected on the fixed groove.

[0013] In one or more embodiments of the present invention, the temperature processing redundancy protection component includes a redundancy control plate slidably connected to the attached arc body, a spring B fixedly connected to the redundancy control plate, a sleeve fixedly connected to the redundancy control plate, a sliding piece slidably connected inside the sleeve, through holes equidistantly opened on the sliding piece, a plug post fixedly connected to the sliding piece, and the end of the plug post away from the sliding piece fixedly connected to the moving plate.

[0014] In one or more embodiments of the present invention, a ceramic insulating component is fixedly connected to the bottom surface of the sliding plate, and a ceramic tube is inserted and fixedly connected inside the ceramic insulating component.

[0015] In one or more embodiments of the present invention, a silicon carbide heating rod is inserted into the ceramic insulating component, and a slot is provided on the ceramic tube, into which a shape memory alloy clip is engaged.

[0016] A process for preparing a TiAl alloy gradient anti-corrosion coating, using the aforementioned TiAl alloy gradient anti-corrosion coating preparation device, includes the following steps: preliminary preparation, installation of temperature control components, heating stage, heat preservation stage, cooling stage, removal of workpiece, and inspection and processing;

[0017] The preliminary preparation steps include:

[0018] The pretreated and coated titanium anode substrate is placed on a high-temperature resistant substrate support. The furnace chamber is checked for cleanliness and absence of debris. The protective gas source is connected to ensure normal gas supply. The parameters of the temperature control system are set, including the temperature, heating rate, holding time, and cooling rate at each stage. The installation steps of the temperature control component include: sliding the sliding plate with silicon carbide heating rod into the fixed groove. With the connection of the attached arc body, connecting piece, and fixed groove, the gas inside indirectly assists in locking the limiting strip plate in the limiting groove to lock the sliding plate with silicon carbide heating rod.

[0019] In one or more embodiments of the present invention, the heating stage includes: starting the segmented temperature-controlled sintering furnace, the temperature control system controlling the silicon carbide heating rod to start heating, and slowly increasing the furnace temperature according to a preset heating rate. During this process, volatile substances such as moisture and organic matter in the coating gradually evaporate and are discharged. The heating rate is controlled at 1 to 5°C / min. The heat preservation stage includes: after the furnace temperature reaches the preset heat preservation temperature, maintaining the temperature for a period of time. During this process, the atoms inside the coating undergo diffusion and recrystallization changes. The heat preservation time depends on the composition and thickness of the coating. The cooling stage includes: after the heat preservation is completed, the temperature control system controls the silicon carbide heating rod to stop heating and begin cooling, controlling the cooling rate. In the high-temperature section, the cooling rate is controlled at 5 to 10°C / min. In the low-temperature section, the cooling rate is appropriately accelerated, or natural cooling is used.

[0020] In one or more embodiments of the present invention, the step of removing the workpiece and performing the detection process includes:

[0021] Once the temperature inside the segmented temperature-controlled sintering furnace begins to drop to a safe level, operators take protective measures, including wearing high-temperature protective gloves and goggles. They then open the sealed door and remove the sintered titanium anode substrate from the substrate support inside the furnace. After removal, the workpiece is placed on a dedicated cooling platform for natural cooling or, depending on the requirements of subsequent testing and processing, further cooling treatment is performed before subsequent testing or processing steps, such as coating thickness measurement, composition analysis, and adhesion testing.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention, through the design of a multi-dimensional dynamic balance anti-interference stabilizing component, can bring the following benefits: overcoming the influence of thermal expansion and contraction, and having an adaptive adjustment function: In the traditional bolt fixing method, when the temperature changes, stress concentration is easily generated due to the difference in thermal expansion coefficients between the connecting parts and the heating rod, leading to loosening; while the multi-dimensional dynamic balance anti-interference stabilizing component utilizes gas-assisted design, which can indirectly and dynamically adjust the limiting stability of the silicon carbide heating rod according to temperature changes; when the temperature rises, the gas in the attached arc body increases due to thermal expansion pressure, indirectly causing the limiting component to move adaptively in conjunction with the limiting strip plate, and cooperate with the limiting groove, which not only indirectly maintains the stability of the silicon carbide heating rod, but also avoids abnormal movement of the component caused by temperature factors; when the temperature drops, the gas contracts, and the limiting component adjusts inward accordingly, that is, contracts into the attached arc body, but it will always cooperate with the limiting groove on the sliding plate to maintain the limitation, effectively reducing the problem of fixing stability caused by thermal expansion and contraction, thereby indirectly causing displacement of the silicon carbide heating rod and ensuring uniform temperature distribution in the furnace. Attached Figure Description

[0023] Figure 1 This is a side view of the main structure of the present invention;

[0024] Figure 2 This is a structural diagram of the main body of the present invention;

[0025] Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle;

[0026] Figure 4 The following are structural diagrams related to the arc body, connecting parts, and fixing groove of this invention;

[0027] Figure 5 As shown in one embodiment of the present invention Figure 4 Enlarged view of the structure at point B in the middle;

[0028] Figure 6 For the present invention Figure 4 Enlarged view of the structure at point C;

[0029] Figure 7 This is a cross-sectional view of the internal structure of the attached arc body, connecting piece, and fixing groove of the present invention;

[0030] Figure 8 This is a three-dimensional structural diagram of the multi-dimensional dynamic balance anti-interference and stabilization component and the temperature processing redundancy protection component of the present invention.

[0031] Figure 9 This is another perspective three-dimensional structural diagram of the multi-dimensional dynamic balance anti-interference and stabilization component and the temperature processing redundancy protection component of the present invention;

[0032] Figure 10 This is a diagram showing the working state of the multi-dimensional dynamic balance anti-interference stabilization component of the present invention.

[0033] Explanation of key figure labels:

[0034] 1. Segmented temperature-controlled sintering furnace; 2. Enclosed door panel; 3. Furnace chamber; 4. Substrate support; 5. Multi-dimensional dynamic balance anti-interference stabilizing component; 501. Attached arc body; 502. Connecting component; 503. Fixed groove; 504. Moving plate; 505. Connecting rod; 506. Triangular block; 507. Spring A; 508. Snap-fit ​​limiting strip plate; 509. Sliding plate; 510. Limiting groove; 511. Conical groove; 512. Alignment pin; 6. Temperature treatment redundancy protection component; 601. Redundancy control plate; 602. Spring B; 603. Sleeve; 604. Sliding piece; 605. Through hole; 606. Insertion post; 607. Ceramic insulating component; 608. Ceramic tube; 609. Silicon carbide heating rod; 610. Shape memory alloy retaining strip. Detailed Implementation

[0035] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0036] Reference Figures 1 to 5 , Figure 7 , Figure 9 , Figure 10 As shown: To address the problems mentioned in the technical solutions, this application provides a TiAl alloy gradient anti-corrosion coating preparation device, including: a segmented temperature-controlled sintering furnace 1, a closed door plate 2, a furnace chamber 3, and a substrate support 4. The closed door plate 2 is mounted on the segmented temperature-controlled sintering furnace 1 via a rotating shaft. The furnace chamber 3 is fixedly connected inside the segmented temperature-controlled sintering furnace 1, and the substrate support 4 is fixedly connected inside the furnace chamber 3. It also includes: a multi-dimensional dynamic balance anti-interference stabilization component 5 and a temperature processing redundancy protection component 6. The temperature processing redundancy protection component 6 is disposed within the multi-dimensional dynamic balance anti-interference stabilization component 5. The multi-dimensional dynamic balance anti-interference stabilization component 5 is used to maintain the stability of the silicon carbide heating rod 609 during thermal expansion and contraction, vacuuming, and the introduction of protective gas. The multi-dimensional dynamic balance anti-interference stabilization component 5 includes components attached and fixedly connected to the inner wall of the furnace chamber 3. An attached arc body 501 is attached, and a connecting piece 502 is fixedly connected to the tail end of the attached arc body 501. A fixed groove 503 is fixedly connected to the bottom end of the connecting piece 502. A movable plate 504 is slidably connected inside the attached arc body 501. A connecting rod 505 is fixedly connected to the end face of the movable plate 504. A triangular block 506 is fixedly connected to the end of the connecting rod 505 away from the movable plate 504. A spring A507 is fixedly connected to the inner wall of the attached arc body 501. A snap-fit ​​limiting strip 508 is fixedly connected to the bottom end of the spring A507. A sliding plate 509 is slidably connected inside the fixed groove 503. An auxiliary groove is opened at the bottom end of the fixed groove 503. The length of the auxiliary groove is less than the total length of the fixed groove 503. A limiting groove 510 is opened at the outer end of the sliding plate 509. A conical groove 511 is symmetrically opened at the tail end of the limiting groove 510. An alignment pin 512 is fixedly connected to the fixed groove 503.

[0037] Among them, the multi-dimensional dynamic balance anti-interference stabilizing component 5 is used to maintain the stability of the silicon carbide heating rod 609 during thermal expansion and contraction, vacuuming, and the introduction of protective gas.

[0038] An auxiliary groove is provided at the bottom of the fixed groove 503. The auxiliary groove is used for the stable linear sliding of the ceramic insulating component 607. The length of the auxiliary groove is less than the length of the fixed groove 503, so as to assist the sliding plate 509 in moving within the fixed groove 503 to perform the air-pushing action.

[0039] Without high-temperature preparation, after installation, the insertion depth of the snap-fit ​​limiting strip 508 into the limiting groove 510 is relatively shallow. When the titanium anode is prepared at high temperature, the gas expansion in the attached arc body 501 will cause the snap-fit ​​limiting strip 508 to insert and limit the work to a deeper depth.

[0040] A heat insulation plate can be inserted into the gap between the attached arc body 501 and the fixed groove body 503.

[0041] The snap-fit ​​limiting strip 508 is slidably adapted to the limiting groove 510; the tapered groove 511 is inserted into the alignment pin 512.

[0042] A further embodiment: Please refer to Figure 4 , Figures 6 to 9 As shown: The temperature processing redundancy protection component 6 is used to maintain the stability of the device components at high temperatures. The temperature processing redundancy protection component 6 includes a redundancy control plate 601 slidably connected to the attached arc body 501. A spring B602 is fixedly connected to the redundancy control plate 601. A sleeve 603 is fixedly connected to the redundancy control plate 601. A sliding piece 604 is slidably connected inside the sleeve 603. Through holes 605 are equidistantly opened on the sliding piece 604. A plug post 606 is fixedly connected to the sliding piece 604. The end of the plug post 606 away from the sliding piece 604 is fixedly connected to the moving plate 504. A ceramic insulator 607 is fixedly connected to the bottom surface of the sliding plate 509. A ceramic tube 608 is inserted and fixedly connected inside the ceramic insulator 607. A silicon carbide heating rod 609 is inserted inside the ceramic insulator 607. A slot is opened on the ceramic tube 608. A shape memory alloy clip 610 is clipped into the slot of the ceramic tube 608.

[0043] Among them, the temperature processing redundancy protection component 6 is used to maintain the stability of the device's components at high temperatures.

[0044] Sleeve 603 is equipped with metal fluid.

[0045] The shape memory alloy clip 610 can stably restrict the silicon carbide heating rod 609 at high temperatures, and the clip fixation will not loosen due to temperature changes.

[0046] A further embodiment: A process for preparing a TiAl alloy gradient anti-corrosion coating includes the following steps: preliminary preparation, installation of temperature control components, heating stage, heat preservation stage, cooling stage, removal of workpiece, and inspection and processing.

[0047] The preliminary preparation steps include: placing the pretreated and coated titanium anode substrate on the high-temperature resistant substrate support 4, checking whether the furnace chamber 3 is clean and free of debris, connecting the protective gas source to ensure normal gas supply, and setting the parameters of the temperature control system, including the temperature, heating rate, holding time and cooling rate of each stage.

[0048] The installation steps of the temperature control component include: sliding the sliding plate 509 with the silicon carbide heating rod 609 into the fixing groove 503; with the connection of the connecting arc body 501, the connecting piece 502 and the fixing groove 503, the gas inside indirectly assists the locking and limiting strip 508 in locking the sliding plate 509 with the silicon carbide heating rod 609 in the setting of the limiting groove 510.

[0049] The heating stage includes: starting the segmented temperature-controlled sintering furnace 1, the temperature control system controls the silicon carbide heating rod 609 to start heating, and slowly raising the temperature of the furnace chamber 3 according to the preset heating rate. During this process, volatile substances such as moisture and organic matter in the coating gradually evaporate and are discharged; the heating rate is controlled at 1 to 5°C / min.

[0050] The heat preservation stage includes the following steps: after the temperature of furnace chamber 3 reaches the preset heat preservation temperature, the temperature is maintained for a period of time. During this process, the atoms inside the coating undergo diffusion and recrystallization changes. The heat preservation time depends on the composition and thickness of the coating.

[0051] The cooling stage includes the following steps: after the heat preservation is completed, the temperature control system controls the silicon carbide heating rod 609 to stop heating and start cooling, and controls the cooling rate; in the high temperature section, the cooling rate is controlled at 5 to 10°C / min; in the low temperature section, the cooling rate is appropriately accelerated, or natural cooling is adopted.

[0052] The workpiece removal and inspection process includes: after the temperature inside the segmented temperature-controlled sintering furnace 1 begins to drop to a safe temperature, the operator takes protective measures, wears high-temperature protective gloves and goggles, opens the closed door 2, and removes the sintered titanium anode substrate from the substrate support 4 inside the furnace chamber 3. After removal, the workpiece is placed on a special cooling platform for natural cooling or further cooling treatment according to the requirements of subsequent inspection and processing processes. Subsequent inspection or processing steps include coating thickness measurement, composition analysis, and adhesion testing.

[0053] The working principle of all the contents in the above embodiments is as follows: The following is the working process of the multi-dimensional dynamic balance anti-interference stabilizing component 5: In use, the sliding plate 509 is first slidably inserted into the fixed groove 503. During this process, the sliding plate 509 will make a linear insertion movement with the assistance of the auxiliary groove opened at the bottom of the fixed groove 503 and the ceramic insulating part 607. As is known, the bottom end of the fixed groove 503 is provided with an auxiliary groove, which is used for the stable linear sliding of the ceramic insulating part 607. The length of the auxiliary groove is less than the length of the fixed groove 503, so as to assist the sliding plate 509 in moving in the fixed groove 503 to perform the pushing action. Please refer to the attached document. Figure 7 and appendix Figure 10As the sliding plate 509 is pushed, the gas gradually transfers from the fixed groove 503 and the connecting piece 502 to the inner cavity of the attached arc body 501. Furthermore, with the transfer of gas, the moving plate 504, with the assistance of the temperature processing redundancy protection component 6, moves towards the locking and limiting strip 508 via the connecting rod 505, carrying the triangular block 506. During this process, the spring B602 in the temperature processing redundancy protection component 6 is compressed to a certain extent. Furthermore, since the contact surface between the triangular block 506 and the locking and limiting strip 508 is known to be an inclined plane, the triangular block 506 is in a linear motion state. Therefore, as the triangular block 506 moves, the locking and limiting strip 508 moves in the movement of the triangular block 506. At this time, the spring A507 is stretched. Furthermore, as the sliding plate 509 is gradually inserted with the participation of gas, the locking and limiting strip 508 gradually moves and finally inserts into the limiting groove 510 opened on the sliding plate 509. At this time, the insertion and fixing work is initially stable.

[0054] Furthermore, since it is known that without high-temperature preparation, after installation, the insertion depth of the locking and limiting strip 508 into the limiting groove 510 is relatively shallow, and further, during the high-temperature preparation of the titanium anode, the gas expansion in the attached arc body 501 will cause the locking and limiting strip 508 to perform a deeper insertion and limiting operation, thereby further stabilizing the insertion and fixing operation.

[0055] It should be noted that during the insertion and fixing process, the tapered groove 511 and the alignment pin 512 can be used to stabilize the sliding plate 509 during its sliding and fixing operation.

[0056] Furthermore, through the design of the multi-dimensional dynamic balance anti-interference stabilizing component 5, the influence of thermal expansion and contraction on the device can be effectively overcome, and it has an adaptive adjustment function. That is, in the traditional bolt fixing method, when the temperature changes, stress concentration is easily generated due to the difference in thermal expansion coefficients between the connecting parts and the heating rod, leading to loosening. However, the multi-dimensional dynamic balance anti-interference stabilizing component 5 utilizes gas-assisted design, which can indirectly and dynamically adjust the limiting stability of the silicon carbide heating rod 609 according to temperature changes. When the temperature rises, the gas in the attached arc body 501 increases in pressure due to thermal expansion, indirectly causing the limiting component to lock and restrict. The strip 508 moves adaptively and cooperates with the limiting groove 510, which not only indirectly maintains the stability of the silicon carbide heating rod 609, but also avoids abnormal movement of the component caused by temperature factors. When the temperature decreases, the gas contracts and the limiting component adjusts inward accordingly, that is, it contracts into the attachment arc 501. However, it will always cooperate with the limiting groove 510 on the sliding plate 509 to maintain the limitation, effectively reducing the problem of fixation stability caused by thermal expansion and contraction. This indirectly causes the silicon carbide heating rod 609 to shift, ensuring uniform temperature distribution in the furnace 3.

[0057] Flexible buffer: This component uses a triangular block 506, a snap-fit ​​limiting strip 508, and gas in combination. During thermal expansion and contraction, the triangular block 506 can buffer the stress caused by temperature changes by pushing the snap-fit ​​limiting strip 508 with its inclined surface. In contrast, traditional bolt fixing lacks this flexible buffer mechanism and is prone to loosening under stress accumulation, which indirectly causes the silicon carbide heating rod 609 to shift, resulting in uneven temperature and affecting the quality of the titanium anode coating.

[0058] Furthermore, by employing snap-fit ​​limiting strips 508, limiting grooves 510, conical grooves 511, and alignment pins 512, the stability during the vacuuming stage can be enhanced under various working conditions. Specifically, during vacuuming, rapid changes in gas pressure within the furnace 3 can trigger vibrations. The cooperation between the snap-fit ​​limiting strips 508 and the limiting grooves 510 plays a crucial role. The snap-fit ​​limiting strips 508 are tightly embedded within the limiting grooves 510 of the sliding plate 509, and their precise cooperation forms multi-directional constraints. When vibration occurs, the snap-fit ​​limiting strips 508 within the limiting grooves 510 can effectively block the silicon carbide heating rods 6. The horizontal displacement of 09 suppresses its swaying in both the lateral and longitudinal directions. At the same time, the combination of the conical groove 511 and the alignment pin 512 further enhances this stability. The alignment pin 512 is precisely inserted into the conical groove 511. Utilizing the characteristics of the conical structure, it automatically adjusts and maintains the center positioning of the sliding plate 509 during vibration. Even when subjected to vibration impact forces from different directions, the close contact and self-adjustment capability between the conical groove 511 and the alignment pin 512 can ensure that the silicon carbide heating rod 609 connected to the sliding plate 509 remains stable in the vertical direction, effectively ensuring the stable operation of the heating system.

[0059] Ensuring uniform temperature transitions between processes and improving coating quality: By reducing the displacement of the silicon carbide heating rod 609 at different working stages, the stable position of the silicon carbide heating rod 609 ensures uniform heat distribution within the furnace chamber 3, avoiding localized overheating or undercooling caused by the displacement of the silicon carbide heating rod 609 at different process stages, and stabilizing the temperature transitions between processes; it also helps the elements in the coating to fully diffuse and react, enhances the adhesion between the coating and the substrate, and improves the corrosion resistance of the coating.

[0060] Furthermore, by using the snap-fit ​​limiting strip 508, limiting groove 510, conical groove 511, and alignment pin 512, along with the cooperation of gas, the installation process offers advantages over existing methods. It improves the ease of installation and maintenance. Specifically, during the installation of the silicon carbide heating rod 609, the installer only needs to push the sliding plate 509 with the silicon carbide heating rod 609. The sliding plate 509 then moves the gas within the attached arc body 501, connecting piece 502, and fixing groove 503, indirectly causing the snap-fit ​​limiting strip 508 to engage with the limiting groove 510, thus fixing the sliding plate 509 with the silicon carbide heating rod 609. During this process, the conical groove 511 and alignment pin 512... The design facilitates more precise installation. The snap-fit ​​method between the snap-fit ​​limiting strip 508 and the limiting groove 510, combined with gas expansion during operation, further increases the insertion depth of the snap-fit ​​limiting strip 508 into the limiting groove 510. Compared to traditional bolt fixing, no complicated tightening operation is required, enabling rapid horizontal positioning of the heating rod. Simultaneously, the cooperation between the conical groove 511 and the alignment pin 512 provides precise guidance for the vertical installation of the silicon carbide heating rod 609. The operator only needs to insert the sliding plate 509 into the fixed groove 503, and with the assistance of the docking of the conical groove 511 and the alignment pin 512, the vertical positioning of the silicon carbide heating rod 609 can be easily completed, greatly shortening the installation time.

[0061] Meanwhile, during maintenance, the above design facilitates quick disassembly and replacement. When replacement is needed, under normal ambient temperature, simply pull the sliding plate 509 backward, and the locking limiting plate 508 will be removed from the limiting groove 510 on the sliding plate 509, thus indirectly and easily removing the old silicon carbide heating rod 609. The installation process is also simple, improving the efficiency of equipment maintenance and reducing downtime caused by equipment maintenance.

[0062] Please refer to the above work process. Figures 1 to 5 , Figure 7 , Figure 9 , Figure 10 .

[0063] The following is the working process of the temperature processing redundancy protection component 6: Furthermore, during the high-temperature preparation of titanium anodes, the gas expansion within the attached arc body 501 will cause the snap-fit ​​limiting strip 508 to perform a deeper insertion limiting operation. It should be noted that during this process, the redundancy adjustment plate 601 in the temperature processing redundancy protection component 6 will be pushed by the gas first. However, due to the limited passive compression of the spring B602, the operation of the aforementioned snap-fit ​​limiting strip 508 insertion depth can be effectively guaranteed.

[0064] Furthermore, as the work progresses, the high temperature will gradually affect the position of the moving plate 504, that is, the expanding gas will push the moving plate 504. However, due to the presence of the spring B602, and the buffer composed of the sleeve 603, the sliding plate 604, the through hole 605, and the plug post 606, this excess variable that causes the moving plate 504 to move can be effectively weakened, reducing the forced movement of the moving plate 504 through the connecting rod 505 and the triangular block 506 to abut against the inner wall of the attached arc body 501, which would cause damage to the components.

[0065] Furthermore, the design of the temperature redundancy protection component 6 provides strong support for the stable operation of the device in high-temperature environments, which is of great significance for improving the overall performance of the device, extending its service life, and ensuring the continuity of production and product quality. It can effectively improve the stability of components and prevent non-working movements of the main components. That is, high temperature may cause thermal stress in the main components of the device, and the material properties of each component will change in volume. The temperature redundancy protection component 6 can regulate the components in an active or passive way to ensure that each component does not experience displacement or deformation in a non-working state within the corresponding temperature range, thereby causing non-working movements such as displacement and vibration. This component can suppress these movements through buffering and constraint methods, ensuring that each component can still maintain the correct relative position and working posture at high temperatures, and maintain the functional integrity of the device.

[0066] Ensuring Device Reliability: During the titanium anode coating preparation process, the accuracy of temperature control and the stability of components are crucial to coating quality. The redundant temperature control component 6 ensures stable operation of the device at high temperatures, preventing component positional fluctuations caused by temperature issues. This indirectly guarantees coating consistency and performance, effectively reducing the scrap rate.

[0067] Enhancing system safety and improving production continuity: If components of high-temperature equipment fail or malfunction, there is a risk of safety accidents. This component effectively reduces these risks by ensuring component stability and preventing malfunctions, thus protecting the lives of operators and the safety of the production environment. At the same time, reducing component damage and malfunctions means shorter equipment downtime, increased production efficiency, and stable operation of the equipment for a longer period of time. It also reduces production interruptions caused by equipment failures, effectively improving the company's production efficiency and economic benefits.

[0068] Please refer to the above work process. Figure 4 , Figures 6 to 9 .

[0069] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0070] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A TiAl alloy gradient corrosion-resistant coating preparation device, comprising: The sintering furnace comprises a segmented temperature-controlled sintering furnace, a sealed door panel, a furnace chamber, and a substrate support. The sealed door panel is mounted on the sintering furnace via a rotating shaft. The furnace chamber is fixedly connected inside the sintering furnace, and the substrate support is fixedly connected inside the furnace chamber. The sintering furnace is characterized by its segmented temperature-controlled sintering furnace, a sealed door panel, a furnace chamber, and a substrate support. It also includes: a multi-dimensional dynamic balance anti-interference stabilization component and a temperature processing redundancy protection component. The temperature processing redundancy protection component is set inside the multi-dimensional dynamic balance anti-interference stabilization component. The multi-dimensional dynamic balance anti-interference stabilization component is used to maintain the stability of the silicon carbide heating rod during thermal expansion and contraction, vacuuming, and the introduction of protective gas. The temperature processing redundancy protection component is used to maintain the stability of the device's components at high temperatures.

2. The apparatus for preparing a TiAl alloy gradient anti-corrosion coating according to claim 1, characterized in that, The multidimensional dynamic balance anti-interference stabilizing component includes an attachment arc body that is attached and fixedly connected to the inner wall of the furnace. The tail end of the attachment arc body is fixedly connected to a connecting piece, and the bottom end of the connecting piece is fixedly connected to a fixing groove.

3. The apparatus for preparing a TiAl alloy gradient anti-corrosion coating according to claim 2, characterized in that, A movable plate is slidably connected inside the attachment arc. A connecting rod is fixedly connected to the end face of the movable plate. A triangular block is fixedly connected to the end of the connecting rod away from the movable plate. A spring A is fixedly connected to the inner wall of the attachment arc. A locking and limiting strip is fixedly connected to the bottom end of the spring A.

4. The apparatus for preparing a TiAl alloy gradient anti-corrosion coating according to claim 2, characterized in that, A sliding plate is slidably connected inside the fixed groove. An auxiliary groove is opened at the bottom of the fixed groove. The length of the auxiliary groove is less than the total length of the fixed groove. A limiting groove is opened at the outer end of the sliding plate. A conical groove is symmetrically opened at the tail end of the limiting groove. An alignment pin is fixedly connected to the fixed groove.

5. The apparatus for preparing a TiAl alloy gradient anti-corrosion coating according to claim 2, characterized in that, The temperature processing redundancy protection component includes a redundancy control plate slidably connected to the attached arc body. A spring B is fixedly connected to the redundancy control plate. A sleeve is fixedly connected to the redundancy control plate. A sliding piece is slidably connected inside the sleeve. Through holes are equidistantly opened on the sliding piece. A plug post is fixedly connected to the sliding piece. The end of the plug post away from the sliding piece is fixedly connected to the moving plate.

6. The apparatus for preparing a TiAl alloy gradient anti-corrosion coating according to claim 4, characterized in that, A ceramic insulating component is fixedly connected to the bottom surface of the sliding plate, and a ceramic tube is inserted and fixedly connected inside the ceramic insulating component.

7. The apparatus for preparing a TiAl alloy gradient anti-corrosion coating according to claim 6, characterized in that, A silicon carbide heating rod is inserted into the ceramic insulator, and a slot is provided on the ceramic tube, into which a shape memory alloy clip is engaged.

8. A process for preparing a TiAl alloy gradient anti-corrosion coating, using the TiAl alloy gradient anti-corrosion coating preparation apparatus according to any one of claims 1-7, characterized in that, Includes the following steps: Preliminary preparation, installation of temperature control components, heating stage, heat preservation stage, cooling stage, removal of workpiece, and inspection and processing; The preliminary preparation steps include: The pretreated and coated titanium anode substrate is placed on a high-temperature resistant substrate support. The furnace chamber is checked for cleanliness and absence of debris. The protective gas source is connected to ensure normal gas supply. The parameters of the temperature control system are set, including the temperature, heating rate, holding time, and cooling rate at each stage. The installation steps of the temperature control component include: sliding the sliding plate with silicon carbide heating rod into the fixed groove. With the connection of the attached arc body, connecting piece, and fixed groove, the gas inside indirectly assists in locking the limiting strip plate in the limiting groove to lock the sliding plate with silicon carbide heating rod.

9. The TiAl alloy gradient anti-corrosion coating preparation process according to claim 8, characterized in that, The heating stage includes: starting the segmented temperature-controlled sintering furnace, with the temperature control system controlling the silicon carbide heating rod to begin heating, and slowly increasing the furnace temperature according to a preset heating rate. During this process, volatile substances such as moisture and organic matter in the coating gradually evaporate and are discharged. The heating rate is controlled at 1 to 5°C / min. The holding stage includes: after the furnace temperature reaches the preset holding temperature, maintaining this temperature for a period of time. During this process, atoms inside the coating undergo diffusion and recrystallization. The holding time depends on the composition and thickness of the coating. The cooling stage includes: after the holding period ends, the temperature control system controls the silicon carbide heating rod to stop heating and begins cooling, controlling the cooling rate. In the high-temperature section, the cooling rate is controlled at 5 to 10°C / min. In the low-temperature section, the cooling rate is appropriately accelerated, or natural cooling is used.

10. The TiAl alloy gradient anti-corrosion coating preparation process according to claim 9, characterized in that, The steps of removing the workpiece and performing inspection and processing include: Once the temperature inside the segmented temperature-controlled sintering furnace begins to drop to a safe level, operators take protective measures, including wearing high-temperature protective gloves and goggles. They then open the sealed door and remove the sintered titanium anode substrate from the substrate support inside the furnace. After removal, the workpiece is placed on a dedicated cooling platform for natural cooling or, depending on the requirements of subsequent testing and processing, further cooling treatment is performed before subsequent testing or processing steps, such as coating thickness measurement, composition analysis, and adhesion testing.

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