A method of producing a glass-ceramic composite thermal barrier coating
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG LIUFANG CARBON TECH CO LTD
- Filing Date
- 2023-10-12
- Publication Date
- 2026-06-23
Smart Images
Figure CN117381957B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of thermal barrier coating materials technology, and in particular to a method for producing a glass-ceramic composite thermal barrier coating. Background Technology
[0002] Thermal barrier coatings are materials that can provide thermal insulation to the substrate material and improve its corrosion resistance. They are currently widely used in hot-end components of aero engines, effectively improving the operating temperature and service life of these components.
[0003] The invention patent with authorization announcement number CN 106746666 B discloses a design model for a glass-ceramic composite thermal barrier coating and a method for preparing the glass-ceramic composite thermal barrier coating using the model. When preparing a single-layer coating using this method, the substrate needs to be successively polished, sandblasted, and degreased. Then, the raw material powders are weighed according to the designed composition of each component in the coating, and the dispersant is placed together with the weighed raw material powders in a ball mill for ball milling and mixing evenly to obtain a composite slurry. Finally, the composite slurry is pre-placed on the surface of the degreased substrate, and after drying, heating, and air cooling, a glass-ceramic composite thermal barrier coating with a single-layer structure is finally obtained on the surface of the substrate.
[0004] However, after practical application by those skilled in the art, the above method still has some drawbacks. The most obvious one is that during the process of using a ball mill to uniformly mix the raw material powder and dispersant and discharge the composite slurry, a lot of composite slurry will adhere to the inner wall of the ball mill and the surface of the steel balls used as grinding media. This makes recycling difficult, resulting in waste of raw materials and increasing the preparation cost of glass-ceramic composite thermal barrier coatings.
[0005] Therefore, it is necessary to invent a production method for a glass-ceramic composite thermal barrier coating to solve the above problems. Summary of the Invention
[0006] The purpose of this invention is to provide a method for producing a glass-ceramic composite thermal barrier coating to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, the present invention provides the following technical solution: a method for producing a glass-ceramic composite thermal barrier coating, wherein the method for producing the glass-ceramic composite thermal barrier coating is implemented by a glass-ceramic composite thermal barrier coating production equipment, the glass-ceramic composite thermal barrier coating production equipment includes a preparation tank, a driving mechanism is provided inside the preparation tank, and a separation and rinsing mechanism, a ball milling mechanism, a sealing and scraping mechanism, and a stirring triggering mechanism are arranged sequentially from top to bottom on the outside of the driving mechanism, wherein the separation and rinsing mechanism divides the inner cavity of the preparation tank into an upper chamber and a lower chamber;
[0008] The drive mechanism includes a reciprocating screw, a drive motor, and a driving bevel gear;
[0009] The reciprocating screw passes through the preparation tank and is rotatably connected to the preparation tank via a bearing. The drive motor is fixedly installed on the top of the preparation tank and is connected to the reciprocating screw for transmission. The active bevel gear is fixedly sleeved on the outside of the reciprocating screw.
[0010] The separation flushing mechanism includes a first perforated plate, a second perforated plate, a lifting column, a first spring, a pull rod, and a first slider;
[0011] The first perforated plate is slidably sleeved on the outside of the reciprocating screw and fixedly mounted on the top of the inner cavity of the preparation tank. The second perforated plate is slidably mounted on the outside of the reciprocating screw and fitted to the bottom of the first perforated plate. The lifting column slidably passes through the first perforated plate and is fixedly connected to the second perforated plate. The first spring is fixedly connected between the lifting column and the inner wall of the preparation tank. The pull rod is fixedly mounted on the bottom of the second perforated plate. The first slider is fixedly mounted on the bottom end of the pull rod.
[0012] Preferably, the ball mill mechanism includes an annular intermediate plate, an inner sealing block, an annular filter cylinder, a connecting seat, a rotating shaft, a driven bevel gear, and a connecting rod.
[0013] Preferably, the annular intermediate plate and the inner sealing block are both rotatably sleeved on the outside of the reciprocating screw via bearings. The inner sealing block is fixedly disposed at the bottom of the annular intermediate plate. The annular filter cylinder is rotatably disposed on the side of the annular intermediate plate via bearings. The annular intermediate plate, the annular filter cylinder, and the connecting seat combine to form a ball milling chamber. The ball milling chamber is filled with steel balls. The connecting seat is rotatably connected to the end of the annular filter cylinder via bearings and is fixedly connected to the inner wall of the preparation tank. The rotating shaft is rotatably nested at the center of the inner side of the connecting seat via bearings. The driven bevel gear is fixedly disposed at the end of the rotating shaft and meshes with the driving bevel gear. The connecting rod is fixedly connected between the annular filter cylinder and the rotating shaft.
[0014] Preferably, the sealing and scraping mechanism includes an outer sealing block, a receiving groove, an output channel, a first sliding cavity, a second sliding cavity, a second spring, and a fixed outer shell.
[0015] Preferably, the outer sealing block is sleeved on the outside of the reciprocating screw and slidably disposed inside the preparation tank. The receiving groove is opened at the top of the outer sealing block. The annular intermediate plate, the annular filter cylinder, and the connecting seat are all located inside the receiving groove. The output channel is disposed through the bottom of the outer sealing block and communicates with the receiving groove. The inner sealing block is located inside the output channel. The first sliding cavity and the second sliding cavity are both opened inside the outer sealing block. The pull rod slides through the outer sealing block and extends into the second sliding cavity. The first slider is slidably disposed inside the second sliding cavity. The second spring is fixedly connected to the top of the outer sealing block. The fixed outer shell is located outside the second spring and fixedly connected to the second spring. The fixed outer shell is fixedly connected to the inner wall of the preparation tank.
[0016] Preferably, the stirring triggering mechanism includes a rotating disk, a lifting plate, a filling ring, a stirring rod, and a second slider.
[0017] Preferably, the rotating disk is located at the bottom of the inner cavity of the preparation tank and is fixedly sleeved on the outside of the reciprocating screw. The lifting plate is sleeved on the outside of the reciprocating screw and is drivenly connected to the reciprocating screw. The filling ring is rotatably disposed on the outside of the rotating disk through a bearing. The stirring rod slides through the bottom of the preparation tank and the filling ring and is fixedly connected to the lifting plate. The top end of the stirring rod passes through the outer sealing block and extends into the first sliding cavity and is fixedly connected to the second slider. The second slider is slidably disposed inside the first sliding cavity.
[0018] Preferably, the method specifically includes the following steps:
[0019] S1. Half of the dispersant is stored in the upper chamber. The raw material powder and the other half of the dispersant are added to the ball mill chamber. The drive motor is started. After the drive motor starts, it drives the reciprocating screw to rotate continuously. When the reciprocating screw rotates, it drives the driven bevel gear to rotate through the active bevel gear. When the driven bevel gear rotates, it drives the annular filter cylinder to rotate through the rotating shaft and connecting rod. This causes the annular filter cylinder to drive the steel balls to roll continuously in the ball mill chamber, thereby mixing the dispersant and the raw material powder to obtain a semi-finished composite slurry.
[0020] S2. When the reciprocating screw rotates, it drives the rotating disk to rotate continuously, which in turn drives the lifting plate to descend continuously. When the lifting plate descends, it drives the second slider to descend continuously inside the first sliding cavity through the stirring rod. When the lifting plate descends a distance of the first threshold, the second slider moves to the lowest end of the inner side of the first sliding cavity. Subsequently, as the lifting plate continues to descend, the lifting plate drives the outer sealing block to descend synchronously through the stirring rod and the second slider.
[0021] S3. When the outer sealing block descends, it releases the seal on the annular filter cartridge. At the same time, the inner sealing block rises relative to the inner sealing block inside the output channel. At this time, the semi-finished composite slurry inside the ball mill chamber continuously passes through the annular filter cartridge and falls into the receiving tank. When the descending distance of the lifting plate reaches the second threshold, the inner sealing block moves out from the inside of the output channel. At this time, the semi-finished composite slurry inside the receiving tank continuously falls into the top of the rotating disk in the lower chamber through the output channel.
[0022] S4. When the lifting plate descends to the third threshold, the first slider moves to the top of the second sliding cavity due to the descent of the outer sealing block. Subsequently, as the lifting plate continues to descend, the outer sealing block drives the second perforated plate to descend through the first slider and the pull rod. When the second perforated plate descends, it stretches the first spring through the lifting column. At this time, the holes on the first perforated plate and the second perforated plate are connected.
[0023] S5. The dispersant inside the upper chamber continuously passes through the holes in the second perforated plate and falls into the annular filter cartridge. Then it flows into the ball mill chamber to wash the continuously rolling steel balls. The washing liquid falls into the lower chamber through the output channel and is initially mixed with the semi-finished composite slurry.
[0024] S6. The rotating disc drives the semi-finished composite slurry and rinsing liquid on its top to rotate synchronously. During the rotation, the semi-finished composite slurry and rinsing liquid continuously come into contact with the stirring rod, thereby continuing to form the finished composite slurry.
[0025] S7. The composite slurry product is continuously output through the pipe on the right side of the preparation tank. During the output of the composite slurry product, the outer sealing block continues to descend, and the composite slurry product adhering to the inner wall of the preparation tank is scraped off during the descent of the outer sealing block.
[0026] S8. When the lifting plate descends to the fourth threshold, the bottom of the outer sealing block is in contact with the top of the rotating disk and the top of the filling ring, and the composite slurry product is output. At this time, the lifting plate moves to the bottom of the reciprocating thread on the outside of the reciprocating screw. Subsequently, as the reciprocating screw continues to rotate, the lifting plate moves up and resets.
[0027] S9. The composite slurry is pre-placed on the surface of the degreased substrate. After drying, heating and air cooling, a glass-ceramic composite thermal barrier coating with a single-layer structure is finally obtained on the surface of the substrate.
[0028] The technical effects and advantages of this invention are as follows:
[0029] This invention incorporates a driving mechanism, a separating and rinsing mechanism, a ball milling mechanism, a sealing and scraping mechanism, and a stirring and triggering mechanism. This allows the driving mechanism to synchronously drive the ball milling mechanism and the stirring and triggering mechanism. When the ball milling mechanism is driven, half of the dispersant is mixed with the raw material powder to obtain a semi-finished composite slurry. When the stirring and triggering mechanism is driven, it causes the sealing and scraping mechanism to descend. After descending, the sealing and scraping mechanism releases the seal on the ball milling mechanism, allowing the semi-finished composite slurry to be fed into the lower chamber. Subsequently, the stirring and triggering mechanism pulls the separating and rinsing mechanism through the sealing and scraping mechanism, thereby enabling the separating and rinsing mechanism to deliver the other half of the dispersant. The process involves flushing the ball milling mechanism and the sealing and scraping mechanism. The flushing liquid falls into the lower chamber and is uniformly mixed with the semi-finished composite slurry under the action of the stirring trigger mechanism driven by the driven mechanism to obtain the finished composite slurry. At the same time, the continuously descending sealing and scraping mechanism scrapes off the finished composite slurry adhering to the inner wall of the preparation tank and outputs it. Compared with similar devices and methods in the prior art, this invention uses a combination of flushing and scraping to clean the residual composite slurry and discharge it, thereby effectively reducing the amount of residual composite slurry, avoiding waste and reducing the preparation cost of glass-ceramic composite thermal barrier coating. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the overall front cross-sectional structure of the present invention.
[0031] Figure 2 This is a partial front view cross-sectional structural diagram of the drive mechanism and the separation flushing mechanism of the present invention.
[0032] Figure 3 This is a partial cross-sectional view of the drive mechanism and the ball mill mechanism of the present invention.
[0033] Figure 4 This is a front cross-sectional view of a portion of the separating flushing mechanism and the sealing scraping mechanism of the present invention.
[0034] Figure 5 This is a front view cross-sectional structural diagram of the stirring triggering mechanism of the present invention.
[0035] In the diagram: 1. Preparation tank; 2. Drive mechanism; 21. Reciprocating screw; 22. Drive motor; 23. Driving bevel gear; 3. Separating and rinsing mechanism; 31. First perforated plate; 32. Second perforated plate; 33. Lifting column; 34. First spring; 35. Pull rod; 36. First slider; 4. Ball milling mechanism; 41. Annular intermediate plate; 42. Inner sealing block; 43. Annular filter cartridge; 44. Connecting seat; 45. Rotating shaft; 46. Driven bevel gear; 47. Connecting rod; 5. Sealing and scraping mechanism; 51. Outer sealing block; 52. Receiving groove; 53. Output channel; 54. First sliding cavity; 55. Second sliding cavity; 56. Second spring; 57. Fixed outer shell; 6. Stirring triggering mechanism; 61. Rotary disk; 62. Lifting plate; 63. Filling ring; 64. Stirring rod; 65. Second slider. Detailed Implementation
[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0037] Example 1
[0038] This invention provides, for example Figure 1-5 The invention discloses a method for producing a glass-ceramic composite thermal barrier coating. The method is implemented by a glass-ceramic composite thermal barrier coating production equipment, which includes a preparation tank 1. A drive mechanism 2 is provided inside the preparation tank 1. From top to bottom, a separation and rinsing mechanism 3, a ball milling mechanism 4, a sealing and scraping mechanism 5, and a stirring triggering mechanism 6 are arranged on the outside of the drive mechanism 2. The separation and rinsing mechanism 3 divides the inner cavity of the preparation tank 1 into an upper chamber and a lower chamber.
[0039] like Figure 2 and Figure 3 As shown, the drive mechanism 2 includes a reciprocating screw 21, a drive motor 22, and a drive bevel gear 23. The reciprocating screw 21 passes through the preparation tank 1 and is rotatably connected to the preparation tank 1 through a bearing. The drive motor 22 is fixedly installed on the top of the preparation tank 1 and is connected to the reciprocating screw 21 for transmission. The drive bevel gear 23 is fixedly sleeved on the outside of the reciprocating screw 21.
[0040] like Figure 2 and Figure 4As shown, the separating rinsing mechanism 3 includes a first perforated plate 31, a second perforated plate 32, a lifting column 33, a first spring 34, a pull rod 35, and a first slider 36. The first perforated plate 31 is slidably sleeved on the outside of the reciprocating screw 21 and fixedly mounted on the top of the inner cavity of the preparation tank 1. The second perforated plate 32 is slidably mounted on the outside of the reciprocating screw 21 and fitted against the bottom of the first perforated plate 31. The lifting column 33 slides through the first perforated plate 31 and is fixedly connected to the second perforated plate 32. The first spring 34 is fixedly connected between the lifting column 33 and the inner wall of the preparation tank 1. The pull rod 35 is fixedly mounted on the bottom of the second perforated plate 32. The first slider 36 is fixedly mounted on the bottom end of the pull rod 35.
[0041] By setting the above structure, when the first slider 36 descends, it drives the second perforated plate 32 to descend through the pull rod 35. When the second perforated plate 32 descends, it stretches the first spring 34 through the lifting column 33. At this time, the holes on the first perforated plate 31 and the second perforated plate 32 are connected, and the dispersant inside the upper chamber continuously drips through the holes on the second perforated plate 32.
[0042] like Figure 3 As shown, the ball milling mechanism 4 includes an annular intermediate plate 41, an inner sealing block 42, an annular filter cylinder 43, a connecting seat 44, a rotating shaft 45, a driven bevel gear 46, and a connecting rod 47. The annular intermediate plate 41 and the inner sealing block 42 are both rotatably sleeved on the outside of the reciprocating screw 21 via bearings. The inner sealing block 42 is fixedly disposed at the bottom of the annular intermediate plate 41. The annular filter cylinder 43 is rotatably disposed on the side of the annular intermediate plate 41 via bearings. The annular intermediate plate 41, the annular filter cylinder 43, and the connecting seat 44 combine to form a ball milling chamber filled with steel balls. The connecting seat 44 is rotatably connected to the end of the annular filter cylinder 43 via bearings and is fixedly connected to the inner wall of the preparation tank 1. The rotating shaft 45 is rotatably nested at the center of the inner side of the connecting seat 44 via bearings. The driven bevel gear 46 is fixedly disposed at the end of the rotating shaft 45 and meshes with the driving bevel gear 23. The connecting rod 47 is fixedly connected between the annular filter cylinder 43 and the rotating shaft 45.
[0043] By setting the above structure, the reciprocating screw 21 can be driven to rotate continuously after the drive motor 22 starts. When the reciprocating screw 21 rotates, it drives the driven bevel gear 46 to rotate through the active bevel gear 23. When the driven bevel gear 46 rotates, it drives the annular filter cylinder 43 to rotate through the rotating shaft 45 and the connecting rod 47. This causes the annular filter cylinder 43 to drive the steel balls to roll continuously in the ball mill chamber, thereby mixing the dispersant and the raw material powder to obtain a semi-finished composite slurry.
[0044] like Figure 4As shown, the sealing and scraping mechanism 5 includes an outer sealing block 51, a receiving groove 52, an output channel 53, a first sliding cavity 54, a second sliding cavity 55, a second spring 56, and a fixed outer shell 57. The outer sealing block 51 is sleeved on the outside of the reciprocating screw 21 and slidably disposed inside the preparation tank 1. The receiving groove 52 is formed at the top of the outer sealing block 51. The annular intermediate plate 41, the annular filter cylinder 43, and the connecting seat 44 are all located inside the receiving groove 52. The output channel 53 penetrates through the bottom of the outer sealing block 51 and is connected to the receiving groove. 52 is connected. The inner sealing block 42 is located inside the output channel 53. The first sliding cavity 54 and the second sliding cavity 55 are both opened inside the outer sealing block 51. The pull rod 35 slides through the outer sealing block 51 and extends into the second sliding cavity 55. The first slider 36 is slidably disposed inside the second sliding cavity 55. The second spring 56 is fixedly connected to the top of the outer sealing block 51. The fixed outer shell 57 is located outside the second spring 56 and is fixedly connected to the second spring 56. The fixed outer shell 57 is fixedly connected to the inner wall of the preparation tank 1.
[0045] By setting up the above structure, the outer sealing block 51 can release the blockage on the annular filter cylinder 43 when it descends, while the inner sealing block 42 rises relative to the inside of the output channel 53. At this time, the semi-finished composite slurry inside the ball mill chamber continuously passes through the annular filter cylinder 43 and falls into the receiving tank 52. When the inner sealing block 42 is removed from the inside of the output channel 53, the semi-finished composite slurry inside the receiving tank 52 continuously falls into the lower chamber through the output channel 53.
[0046] like Figure 5 As shown, the stirring triggering mechanism 6 includes a rotating disk 61, a lifting plate 62, a filling ring 63, a stirring rod 64, and a second slider 65. The rotating disk 61 is located at the bottom of the inner cavity of the preparation tank 1 and is fixedly sleeved on the outside of the reciprocating screw 21. The lifting plate 62 is sleeved on the outside of the reciprocating screw 21 and is connected to the reciprocating screw 21 in a transmission manner. The filling ring 63 is rotatably disposed on the outside of the rotating disk 61 through a bearing. The stirring rod 64 slides through the bottom of the preparation tank 1 and the filling ring 63 and is fixedly connected to the lifting plate 62. The top end of the stirring rod 64 passes through the outer sealing block 51 and extends into the first sliding cavity 54 and is fixedly connected to the second slider 65. The second slider 65 is slidably disposed inside the first sliding cavity 54.
[0047] By setting the above structure, the reciprocating screw 21 can drive the rotating disk 61 to rotate continuously, which in turn drives the lifting plate 62 to descend continuously. When the rotating disk 61 rotates, it drives the semi-finished composite slurry and the rinsing liquid to rotate synchronously. During the rotation, the semi-finished composite slurry and the rinsing liquid continuously come into contact with the stirring rod 64, thereby continuing to form the finished composite slurry. When the lifting plate 62 descends, it drives the second slider 65 to descend continuously inside the first sliding cavity 54 through the stirring rod 64. When the second slider 65 moves to the lowest end inside the first sliding cavity 54, as the lifting plate 62 continues to descend, the lifting plate 62 drives the outer sealing block 51 to descend synchronously through the stirring rod 64 and the second slider 65.
[0048] Example 2
[0049] The method specifically includes the following steps:
[0050] S1. Half of the dispersant is stored in the upper chamber. The raw material powder and the other half of the dispersant are added to the ball mill chamber. The drive motor 22 is started. After the drive motor 22 starts, it drives the reciprocating screw 21 to rotate continuously. When the reciprocating screw 21 rotates, it drives the driven bevel gear 46 to rotate through the driving bevel gear 23. When the driven bevel gear 46 rotates, it drives the annular filter cylinder 43 to rotate through the rotating shaft 45 and the connecting rod 47. This causes the annular filter cylinder 43 to drive the steel balls to roll continuously in the ball mill chamber, thereby mixing the dispersant and the raw material powder to obtain a semi-finished composite slurry.
[0051] S2. When the reciprocating screw 21 rotates, it drives the rotating disk 61 to rotate continuously, which in turn drives the lifting plate 62 to descend continuously. When the lifting plate 62 descends, it drives the second slider 65 to descend continuously inside the first sliding cavity 54 through the stirring rod 64. When the descending distance of the lifting plate 62 reaches the first threshold, the second slider 65 moves to the lowest end inside the first sliding cavity 54. Subsequently, as the lifting plate 62 continues to descend, the lifting plate 62 drives the outer sealing block 51 to descend synchronously through the stirring rod 64 and the second slider 65.
[0052] S3. When the outer sealing block 51 descends, it releases the blockage on the annular filter cylinder 43. At the same time, the inner sealing block 42 rises relative to the inside of the output channel 53. At this time, the semi-finished composite slurry inside the ball mill chamber continuously passes through the annular filter cylinder 43 and falls into the receiving tank 52. When the descending distance of the lifting plate 62 reaches the second threshold, the inner sealing block 42 is removed from the inside of the output channel 53. At this time, the semi-finished composite slurry inside the receiving tank 52 continuously falls into the top of the rotating disk 61 in the lower chamber through the output channel 53.
[0053] S4. When the lifting plate 62 descends to the third threshold, the first slider 36 moves to the top of the inner side of the second sliding cavity 55 due to the descent of the outer sealing block 51. Subsequently, as the lifting plate 62 continues to descend, the outer sealing block 51 drives the second perforated plate 32 to descend through the first slider 36 and the pull rod 35. When the second perforated plate 32 descends, it stretches the first spring 34 through the lifting column 33. At this time, the holes on the first perforated plate 31 and the second perforated plate 32 are connected.
[0054] S5. The dispersant inside the upper chamber continuously passes through the holes on the second perforated plate 32 and falls into the annular filter cartridge 43. Then it flows into the ball mill chamber to wash the continuously rolling steel balls. The washing liquid falls into the lower chamber through the output channel 53 and is initially mixed with the semi-finished composite slurry.
[0055] S6. The rotating disc 61 drives the semi-finished composite slurry and rinsing liquid on its top to rotate synchronously. During the rotation, the semi-finished composite slurry and rinsing liquid continuously come into contact with the stirring rod 64, thereby continuing to form the finished composite slurry.
[0056] S7. The composite slurry product is continuously output through the pipe on the right side of the preparation tank 1. During the output of the composite slurry product, the outer sealing block 51 continues to descend. During the descent of the outer sealing block 51, the composite slurry product attached to the inner wall of the preparation tank 1 is scraped off.
[0057] S8. When the lifting plate 62 descends to the fourth threshold, the bottom of the outer sealing block 51 is in contact with the top of the rotating disk 61 and the top of the filling ring 63, and the composite slurry product is output. At this time, the lifting plate 62 moves to the bottom of the reciprocating thread on the outside of the reciprocating screw 21. Subsequently, as the reciprocating screw 21 continues to rotate, the lifting plate 62 moves up and resets.
[0058] S9. The composite slurry is pre-placed on the surface of the degreased substrate. After drying, heating and air cooling, a glass-ceramic composite thermal barrier coating with a single-layer structure is finally obtained on the surface of the substrate.
[0059] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A method for producing a glass-ceramic composite thermal barrier coating, characterized in that: The production method of the glass-ceramic composite thermal barrier coating is realized by the glass-ceramic composite thermal barrier coating production equipment. The glass-ceramic composite thermal barrier coating production equipment includes a preparation tank (1). The preparation tank (1) is equipped with a driving mechanism (2). The driving mechanism (2) is equipped with a separation and rinsing mechanism (3), a ball milling mechanism (4), a sealing and scraping mechanism (5), and a stirring triggering mechanism (6) in sequence from top to bottom on the outside of the driving mechanism (2). The separation and rinsing mechanism (3) divides the inner cavity of the preparation tank (1) into an upper chamber and a lower chamber. The drive mechanism (2) includes a reciprocating screw (21), a drive motor (22), and a drive bevel gear (23). The reciprocating screw (21) passes through the preparation tank (1) and is rotatably connected to the preparation tank (1) through a bearing. The drive motor (22) is fixedly installed on the top of the preparation tank (1) and is connected to the reciprocating screw (21) for transmission. The active bevel gear (23) is fixedly sleeved on the outside of the reciprocating screw (21). The separation flushing mechanism (3) includes a first perforated plate (31), a second perforated plate (32), a lifting column (33), a first spring (34), a pull rod (35), and a first slider (36). The first perforated plate (31) is slidably sleeved on the outside of the reciprocating screw (21) and fixedly installed on the top of the inner cavity of the preparation tank (1). The second perforated plate (32) is slidably installed on the outside of the reciprocating screw (21) and fitted to the bottom of the first perforated plate (31). The lifting column (33) slides through the first perforated plate (31) and is fixedly connected to the second perforated plate (32). The first spring (34) is fixedly connected between the lifting column (33) and the inner wall of the preparation tank (1). The pull rod (35) is fixedly installed at the bottom of the second perforated plate (32). The first slider (36) is fixedly installed at the bottom end of the pull rod (35). The sealing and scraping mechanism (5) includes an outer sealing block (51), a receiving groove (52), an output channel (53), a first sliding cavity (54), a second sliding cavity (55), a second spring (56), and a fixed outer shell (57). The outer sealing block (51) is sleeved on the outside of the reciprocating screw (21) and slidably disposed inside the preparation tank (1). The receiving groove (52) is opened at the top of the outer sealing block (51). The output channel (53) is disposed through the bottom of the outer sealing block (51) and communicates with the receiving groove (52). The first sliding cavity (54) and the second sliding cavity (55) are both opened inside the outer sealing block (51). The pull rod (35) slides through the outer sealing block (51) and extends into the second sliding cavity (55). The first slider (36) is slidably disposed inside the second sliding cavity (55). The second spring (56) is fixedly connected to the top of the outer sealing block (51). The fixed outer shell (57) is located outside the second spring (56) and fixedly connected to the second spring (56). The fixed outer shell (57) is fixedly connected to the inner wall of the preparation tank (1).
2. The method for producing a glass-ceramic composite thermal barrier coating according to claim 1, characterized in that: The ball mill mechanism (4) includes an annular intermediate plate (41), an inner sealing block (42), an annular filter cylinder (43), a connecting seat (44), a rotating shaft (45), a driven bevel gear (46), and a connecting rod (47).
3. The method for producing a glass-ceramic composite thermal barrier coating according to claim 2, characterized in that: The annular intermediate plate (41) and the inner sealing block (42) are both rotatably sleeved on the outside of the reciprocating screw (21) through bearings. The inner sealing block (42) is fixedly set at the bottom of the annular intermediate plate (41). The annular filter cylinder (43) is rotatably set on the side of the annular intermediate plate (41) through bearings. The annular intermediate plate (41), the annular filter cylinder (43) and the connecting seat (44) are combined to form a ball milling chamber. The ball milling chamber is filled with steel balls. The connecting seat (44) is rotatably connected to the end of the annular filter cylinder (43) through bearings and is fixedly connected to the inner wall of the preparation tank (1). The rotating shaft (45) is rotatably nested at the center of the inner side of the connecting seat (44) through bearings. The driven bevel gear (46) is fixedly set at the end of the rotating shaft (45) and meshes with the driving bevel gear (23). The connecting rod (47) is fixedly connected between the annular filter cylinder (43) and the rotating shaft (45).
4. The method for producing a glass-ceramic composite thermal barrier coating according to claim 3, characterized in that: The annular intermediate plate (41), the annular filter cartridge (43) and the connecting seat (44) are all located inside the receiving groove (52), and the inner sealing block (42) is located inside the output channel (53).
5. The method for producing a glass-ceramic composite thermal barrier coating according to claim 4, characterized in that: The stirring triggering mechanism (6) includes a rotating disk (61), a lifting plate (62), a filling ring (63), a stirring rod (64), and a second slider (65).
6. The method for producing a glass-ceramic composite thermal barrier coating according to claim 5, characterized in that: The rotating disk (61) is located at the bottom of the inner cavity of the preparation tank (1) and is fixedly sleeved on the outside of the reciprocating screw (21). The lifting plate (62) is sleeved on the outside of the reciprocating screw (21) and is connected to the reciprocating screw (21) in a transmission manner. The filling ring (63) is rotatably set on the outside of the rotating disk (61) through the bearing. The stirring rod (64) slides through the bottom of the preparation tank (1) and the filling ring (63) and is fixedly connected to the lifting plate (62). The top end of the stirring rod (64) passes through the outer sealing block (51) and extends into the first sliding cavity (54) and is fixedly connected to the second slider (65). The second slider (65) is slidably set inside the first sliding cavity (54).
7. The method for producing a glass-ceramic composite thermal barrier coating according to claim 6, characterized in that, The method specifically includes the following steps: S1. Half of the dispersant is stored in the upper chamber. The raw material powder and the other half of the dispersant are added to the ball mill chamber. The drive motor (22) is started. After the drive motor (22) is started, it drives the reciprocating screw (21) to rotate continuously. When the reciprocating screw (21) rotates, it drives the driven bevel gear (46) to rotate through the active bevel gear (23). When the driven bevel gear (46) rotates, it drives the annular filter cylinder (43) to rotate through the rotating shaft (45) and the connecting rod (47). This causes the annular filter cylinder (43) to drive the steel balls to roll continuously in the ball mill chamber, thereby mixing the dispersant and the raw material powder to obtain a semi-finished composite slurry. S2. When the reciprocating screw (21) rotates, it drives the rotating disk (61) to rotate continuously, which drives the lifting plate (62) to drop continuously. When the lifting plate (62) drops, it drives the second slider (65) to drop continuously inside the first sliding cavity (54) through the stirring rod (64). When the lifting plate (62) drops a distance to the first threshold, the second slider (65) moves to the lowest end inside the first sliding cavity (54). Subsequently, as the lifting plate (62) continues to drop, the lifting plate (62) drives the outer sealing block (51) to drop synchronously through the stirring rod (64) and the second slider (65). S3. When the outer sealing block (51) descends, it releases the blockage on the annular filter cylinder (43). At the same time, the inner sealing block (42) rises relative to the output channel (53). At this time, the semi-finished composite slurry inside the ball mill chamber continuously passes through the annular filter cylinder (43) and falls into the receiving tank (52). When the descending distance of the lifting plate (62) reaches the second threshold, the inner sealing block (42) moves out from the output channel (53). At this time, the semi-finished composite slurry inside the receiving tank (52) continuously falls into the top of the rotating disk (61) in the lower chamber through the output channel (53). S4. When the lifting plate (62) descends to the third threshold, the first slider (36) moves to the top of the inner side of the second sliding cavity (55) due to the descent of the outer sealing block (51). Subsequently, as the lifting plate (62) continues to descend, the outer sealing block (51) drives the second perforated plate (32) to descend through the first slider (36) and the pull rod (35). When the second perforated plate (32) descends, it stretches the first spring (34) through the lifting column (33). At this time, the holes on the first perforated plate (31) and the second perforated plate (32) are connected. S5. The dispersant inside the upper chamber continuously passes through the holes on the second perforated plate (32) and falls into the annular filter cartridge (43). Then it flows into the ball mill chamber to wash the continuously rolling steel balls. The washing liquid falls into the lower chamber through the output channel (53) and is initially mixed with the semi-finished composite slurry. S6. The rotating disc (61) drives the semi-finished composite slurry and rinsing liquid on its top to rotate synchronously. During the rotation process, the semi-finished composite slurry and rinsing liquid continuously come into contact with the stirring rod (64) and thus continue to form the finished composite slurry. S7. The composite slurry product is continuously output through the pipe on the right side of the preparation tank (1). During the output of the composite slurry product, the outer sealing block (51) continues to descend. During the descent of the outer sealing block (51), the composite slurry product attached to the inner wall of the preparation tank (1) is scraped off. S8. When the lifting plate (62) descends to the fourth threshold, the bottom of the outer sealing block (51) is in contact with the top of the rotating disk (61) and the top of the filling ring (63), and the composite slurry product is output. At this time, the lifting plate (62) moves to the bottom of the reciprocating thread on the outside of the reciprocating screw (21). Subsequently, as the reciprocating screw (21) continues to rotate, the lifting plate (62) moves up and resets. S9. The composite slurry is pre-placed on the surface of the degreased substrate. After drying, heating and air cooling, a glass-ceramic composite thermal barrier coating with a single-layer structure is finally obtained on the surface of the substrate.