A sintering process for composite sintering of honeycomb ceramic carriers

Abstract

The application belongs to the technical field of honeycomb ceramic production, and discloses a sintering process for composite sintering of a honeycomb ceramic carrier, which comprises a sintering furnace, the bottom of the sintering furnace is provided with a linkage lifting assembly, the linkage lifting assembly comprises two groups of limiting supports, the limiting supports are welded and installed on the two sides of the lower end of the sintering furnace, the inner side of the limiting support is rotationally provided with a driving plate, and the outer side of the end of the driving plate away from the limiting support is rotationally provided with a limiting plate, the linkage lifting assembly and the sealing door plate are matched to facilitate lifting the height of the support structure of the material to be sintered through the pulling force in the process of opening the sealing door plate, the material to be sintered can be conveniently and quickly replaced by adjusting, the platform to be loaded can be quickly moved by pulling, a plurality of driving devices do not need to be arranged, the cost of use and maintenance is effectively reduced, and the efficiency of replacing the material can be ensured.

Description

Technical Field

[0001] This invention belongs to the field of honeycomb ceramic production technology, specifically a sintering process for composite sintering of honeycomb ceramic carriers. Background Technology

[0002] Honeycomb ceramic carriers are core components in automotive exhaust aftertreatment, hydrogen fuel cells, and aerospace heat exchange. They must simultaneously meet the requirements of low thermal expansion coefficient, high compressive strength, and precise porosity. During the production of honeycomb ceramic carriers, they need to be heated in a sintering furnace at a temperature higher than 1500 degrees Celsius for dozens of hours to ensure that the honeycomb ceramic carriers are sintered.

[0003] For example, the invention disclosed in CN117628905A discloses a high-temperature sintering furnace, including a furnace body, support legs, a control box, a transfer frame, and a support platform. Support legs are located below the furnace body, and the furnace opening faces downwards. A transfer frame is located below the furnace chamber, and the transfer frame can rotate horizontally left and right. When the transfer frame rotates to the left, it engages with the support platform, transferring the placement rack from the support platform to the transfer frame. When the transfer frame rotates to the middle position, the placement rack separates from the transfer frame. When the transfer frame rotates to the right, the furnace door below the transfer frame rises, and the placement rack is lifted into the furnace chamber. This enables stable transfer of powder compacts, effectively reducing vibrations caused by traditional methods, thus ensuring product quality. The process is convenient and continuous, facilitating stable and continuous production. Furthermore, the entire process is low-cost, avoiding the extensive use of high-temperature resistant materials and contributing to reduced production costs for enterprises.

[0004] In existing technologies, the material to be sintered is transferred to the bottom of the sintering furnace via a transfer frame, and then the material is hooked in by a drive device for feeding. This can facilitate continuous production to a certain extent, but multiple sets of drive devices are still required. However, if such equipment is placed inside the sintering furnace, it will be subjected to high temperature corrosion for a long time. On the one hand, it will easily accelerate the aging of components and cause failures. Moreover, the operation and maintenance are inconvenient in the high temperature environment, which significantly increases the difficulty of maintenance. On the other hand, frequent failures will lead to frequent replacement of spare parts, which directly increases the operating cost of the equipment.

[0005] Therefore, a composite sintering process for honeycomb ceramic carriers is proposed to solve the problems mentioned in the background technology. Summary of the Invention

[0006] To address the problems mentioned in the background section, this invention provides a sintering process for composite sintering of a honeycomb ceramic carrier, the sintering process being as follows: S1. Raw material preparation and pretreatment: Using cordierite-alumina as the composite substrate, weigh cordierite powder, α-alumina powder, SiO2-MgO composite sintering aid and organic binder according to the set mass ratio, add an appropriate amount of deionized water; use a ball mill to wet grind to a fine slurry, dry in a vacuum drying oven, pulverize and sieve for later use. S2, Molding, Drying and Pre-firing: The pretreated powder is extruded through a screw extruder and a honeycomb die to obtain a honeycomb preform; the preform is subjected to gradient drying to a low moisture content; the dried preform is placed on an alumina sintering plate and placed in a sintering furnace for pre-firing according to the set program, and then cooled to room temperature. After checking for cracks and deformation, it is ready for use. S3. Composite sintering, cooling and post-treatment testing: The pre-fired green body is heated according to the set program for composite sintering, and held at the specified temperature until the green body is uniformly grayish-white; then it is gradient cooled, and taken out when the furnace temperature is low enough; after grinding both ends, cleaning with deionized water and drying, the carrier is obtained; the appearance, size and thermal stability of the carrier also need to be tested. The furnace needs to be cleaned and the equipment needs to be inspected during the process. If the furnace temperature fluctuation exceeds the allowable range, the process is suspended.

[0007] A sintering apparatus for composite sintering of a honeycomb ceramic carrier includes a sintering furnace, wherein a linkage lifting assembly is provided at the bottom of the sintering furnace. The linkage lifting assembly includes two sets of limiting brackets, which are welded and installed on both sides of the lower end of the sintering furnace. A drive plate is rotatably arranged on the inner side of the limiting bracket, and a limiting plate is rotatably arranged on the outer side of the drive plate away from the limiting bracket. A connecting shaft is installed between the two sets of drive plates away from the limiting bracket. A limiting shaft is rotatably arranged on the inner side of the limiting plate away from the drive plate. A sealing door plate is fixedly installed in the middle of the two sets of limiting shafts. A rotating sleeve is rotatably arranged on the outer side of the connecting shaft, and a lifting platform is fixedly installed on the top of the rotating sleeve.

[0008] Preferably, sliding sleeves are installed at the bottom of the four corners of the lifting platform, and limit grooves are opened at the top of the four corners of the lifting platform. Limiting plates are combined and arranged inside the limiting grooves, and movable rods are fixedly installed at the bottom of the limiting plates. The movable rods are slidably arranged inside the sliding sleeves, and extrusion plates are installed at the bottom of the movable rods. Limiting sleeves are movably arranged on the outside of the extrusion plates. The top of the extrusion plates and the top of the inner side of the limiting sleeves are elastically connected by a support spring. Stable sliders are fixedly installed at the bottom of the limiting sleeves. A set of limiting guide rods is provided through the inner side of the two sets of stable sliders, and a bottom frame is installed on the outer side of the two sets of limiting guide rods.

[0009] Preferably, a quick-replacement component is provided on the top of the lifting platform; The quick-replacement assembly includes a movable plate that is slidably disposed inside the sintering furnace. Limiting slide plates are installed on both sides of the movable plate and are slidably disposed inside the sintering furnace. Arc-shaped grooves are formed on the inner sides of the movable plate and the lifting platform. A positioning shaft is rotatably disposed inside the lifting platform, and a fixed gear is fixedly installed on the outer side of the positioning shaft. A winch is installed at the bottom of the fixed gear, and a steel wire rope is wound around the outer side of the winch. The steel wire rope passes through the inner side of the lifting platform, and pull rings are fixedly installed at both ends of the steel wire rope.

[0010] Preferably, the top of the lifting platform is rotatably provided with a first rotating plate, and the bottom of the first rotating plate is provided with a first combined ring. The first combined ring is rotatably provided inside the arc-shaped slide groove. A first rotating gear is provided at the bottom of the first rotating plate near the movable plate, and the first rotating gear is meshed on the back of the fixed gear.

[0011] Preferably, a second rotating plate is rotatably mounted on the top of the movable plate, and a second combined ring is installed at the bottom of the second rotating plate. The second combined ring is rotatably mounted inside the arc-shaped slide groove. A second rotating gear is located at the bottom of the second rotating plate near the lifting platform. Storage slots are provided on the top of the first and second rotating plates. Two sets of stops are installed on the top of the movable plate at the end away from the lifting platform.

[0012] Preferably, an auxiliary pull-out assembly is installed on the back of the lower end of the sealing door panel, and the auxiliary pull-out assembly includes two sets of connecting plates. A positioning frame is installed on the end of the connecting plate away from the sealing door panel, and the positioning frame is movably embedded in the front of both ends of the movable plate. A high-temperature spring is installed on the top of the inner side of the positioning frame, and an inclined block is installed on the bottom of the high-temperature spring, and the inclined block is embedded in the inner side of the movable plate.

[0013] Preferably, a helical gear transmission module is installed on the front of the sealing door panel, and four sets of transmission rods are fixedly installed at the output end of the helical gear transmission module. An adjusting turntable is fixedly installed at the input end of the helical gear transmission module. A right-angle transmission module is provided at the end of the transmission rod away from the helical gear transmission module. The right-angle transmission module is fixedly installed on the front of the sealing door panel. A locking screw is rotatably provided on the back of the right-angle transmission module, and the locking screw is located on the back of the sealing door panel.

[0014] Preferably, a controller is installed on one side of the sintering furnace, and four sets of support columns are installed at the bottom of the sintering furnace. Four sets of threaded grooves are opened on the front of the sintering furnace, and the locking screw is rotatably disposed inside the threaded grooves. Two sets of limiting guide columns are installed on the back of the upper end of the sealing door plate, and the limiting guide columns are slidably disposed inside the upper end of the sintering furnace. Two sets of pull handles are installed on the front of the sealing door plate.

[0015] Method of using a sintering apparatus for composite sintering of honeycomb ceramic carriers: S1. Grasp the adjustment turntable to rotate and adjust. During the rotation, the helical gear inside the helical gear transmission module drives the transmission rod to rotate synchronously. Then, the helical gear inside the right-angle transmission module at the end drives the locking screw to rotate and separate from the thread groove. After separation, grasp the pull handle to pull the sealing door plate in the opposite direction of the sintering furnace. During the pulling process, the limit guide column will slide and adjust along the inner side of the upper end of the sintering furnace. Continuing to pull will control the limit plate and drive plate to flip along the limit axis and limit bracket. The flipping gradually tends to be horizontal with the ground. S2. During the outward extension of the sealing door panel, the inclined block inserted inside the movable plate will pull the movable plate horizontally to one end until the pulling block contacts the limiting structure inside the sintering furnace. The movable plate will then stop moving. The continuous pulling force of the sealing door panel will push the inclined block to be embedded inside the positioning frame and separated from the movable plate. S3, the connecting shaft of the limit plate and the drive plate will be raised synchronously during the adjustment process, and will move towards the sealing door panel. The rise of the connecting shaft will push the rotating sleeve and the lifting platform to rise. The continuously rising limit plate will be embedded in the inner side of the limit groove, and the extrusion plate will be raised and the support spring will be compressed by the movable rod. The bottom stabilizing slider will slide laterally along the limit guide rod. S4. After the lifting platform is raised to its highest point and level with the movable plate, pull the shorter set of pull rings on the wire rope. The wire rope drives the winch and positioning shaft to rotate. At the same time, the rotation will drive the fixed gear to rotate synchronously. Under the action of gear meshing, the fixed gear will mesh and drive the first rotating gear and the second rotating gear to rotate 180 degrees. At the same time, the first rotating plate and the second rotating plate at the top will slide and adjust stably along the inner side of the arc-shaped slide groove through the first combination ring and the second combination ring. The position of the two sets of rotating plates is replaced by rotation. S5. After the replacement is completed, push the sealing door panel towards the sintering furnace. Pushing will cause the lifting platform to move downwards and reset. Under the action of the connecting shaft, it will move laterally along the limit guide rod. At the same time, the connecting plate will contact and push the movable plate to slide along the limit slide plate for adjustment. Continuing to push the positioning frame will embed it into the inner side of the movable plate. After the locking screw contacts the thread groove, rotate the adjusting turntable to drive the locking screw to embed into the inner side of the thread groove for locking. Then, the controller controls the sintering furnace to sinter the honeycomb ceramic carrier.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the coordinated arrangement of a linkage lifting assembly and a sealing door panel, facilitates the elevation of the support structure for the sintering material by using the pulling force generated during the opening of the sealing door panel. The material to be sintered can be quickly replaced through adjustment. The drive plate and limit plate movably connect the sintering furnace and the sealing door panel. During the pushing and pulling of the sealing door panel, the connecting shaft is driven to adjust its height and position. The lateral position of the lifting platform can be changed with the bottom stabilizing slider, and the vertical position can be changed with the limit sleeve and limit guide rod. Through adjustment, it can be aligned with the platform inside the sintering furnace. The platform for loading material can be quickly moved by pulling, eliminating the need for multiple drive units, effectively reducing usage and maintenance costs while ensuring efficient material replacement.

[0017] This invention, through the combination of a quick-replacement component and a linkage lifting component, facilitates rapid replacement by adjusting the rotation of two sets of rotating plates by pulling a ring. This effectively improves replacement efficiency and avoids the installation hazards caused by workers directly contacting the high-temperature honeycomb ceramic carrier. The pull ring drives the steel wire rope to move inside the lifting platform. During this movement, the steel wire rope drives the winch to rotate. During the rotation, the positioning shaft and fixed gear rotate synchronously. The meshing of the gears drives the two sets of rotating gears to rotate to the replacement position. At the same time, the rotating plate at the top rotates synchronously. The material at the top can be replaced by rotation. The quick replacement effect is achieved by pulling, effectively reducing the safety hazards of replacing high-temperature materials.

[0018] This invention, through the coordinated use of auxiliary pull-out components and linkage lifting components, facilitates the lateral movement of the internal movable plate via push-pull mechanisms. This allows for easy adjustment of the movable plate and its combination with the lifting platform, enabling rapid replacement of the sintered material. A connecting plate connects the positioning frame to the sealing door panel. A high-temperature spring inside the positioning frame pushes the tilting block outward, where it embeds itself inside the movable plate to achieve a locking effect. Increasing the pulling force until the compressive force exceeds that of the high-temperature spring presses the tilting block into the positioning frame, releasing the lock. The movable plate can be adjusted laterally by pulling, eliminating the need for manual removal of the hot movable plate, significantly reducing safety hazards and simplifying operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the movable plate structure of the present invention; Figure 3 This is a schematic cross-sectional view of the first rotating plate of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point C; Figure 5 This is a schematic diagram of the closed state structure of the sealing door panel of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point D; Figure 7 For the present invention Figure 5 Enlarged structural diagram at point E; Figure 8 For the present invention Figure 1 Enlarged structural diagram at point A in the middle; Figure 9 For the present invention Figure 2 Enlarged cross-sectional view of section B.

[0020] In the diagram: 100, sintering furnace; 101, controller; 102, support column; 103, threaded groove; 001, linkage lifting assembly; 200. Sealed door panel; 201. Limiting bracket; 202. Drive plate; 203. Connecting shaft; 204. Limiting plate; 205. Limiting shaft; 206. Limiting guide post; 207. Pull-out handle; 300. Limiting plate; 301. Bottom frame; 302. Limiting guide rod; 303. Stabilizing slider; 304. Limiting sleeve; 305. Support spring; 306. Extrusion plate; 307. Movable rod; 002. Quick Replacement Component; 400. Lifting Platform; 401. Sliding Sleeve; 402. Rotating Sleeve; 403. Limiting Groove; 404. First Rotating Plate; 405. First Combination Ring; 406. First Rotating Gear; 500. Fixed gear; 501. Positioning shaft; 502. Winch; 503. Steel wire rope; 504. Pull ring; 600. Movable plate; 601. Limiting slide plate; 602. Arc-shaped slide groove; 603. Second rotating plate; 604. Second combined ring; 605. Second rotating gear; 606. Storage slot; 607. Stop block; 003, Auxiliary pull-out assembly; 700, Tilting block; 701, Connecting plate; 702, Positioning frame; 703, High-temperature spring; 800. Locking screw; 801. Helical gear transmission module; 802. Adjusting turntable; 803. Transmission rod; 804. Right-angle transmission module. Detailed Implementation

[0021] 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.

[0022] like Figures 1 to 9 As shown, this invention provides a sintering process for composite sintering of a honeycomb ceramic carrier, the sintering process being as follows: S1. Raw material preparation and pretreatment: Using cordierite-alumina as the composite substrate, weigh cordierite powder, α-alumina powder, SiO2-MgO composite sintering aid and organic binder according to the set mass ratio, add an appropriate amount of deionized water; use a ball mill to wet grind to a fine slurry, dry in a vacuum drying oven, pulverize and sieve for later use. S2, Molding, Drying and Pre-firing: The pretreated powder is extruded through a screw extruder and honeycomb mold to obtain a honeycomb preform; the preform is subjected to gradient drying to a low moisture content; the dried preform is placed on an alumina sintering plate and placed in a sintering furnace for pre-firing according to the set program, and then cooled to room temperature. After checking for cracks and deformation, it is ready for use. S3. Composite sintering, cooling and post-treatment testing: The pre-fired green body is heated according to the set program for composite sintering, and held at the specified temperature until the green body is uniformly grayish-white; then it is gradient cooled, and taken out when the furnace temperature is low enough; after grinding both ends, cleaning with deionized water and drying, the carrier is obtained; the appearance, size and thermal stability of the carrier also need to be tested. The furnace needs to be cleaned and the equipment needs to be inspected during the process. If the furnace temperature fluctuation exceeds the allowable range, the process is suspended.

[0023] A sintering apparatus for composite sintering of a honeycomb ceramic carrier includes a sintering furnace 100, and a linkage lifting assembly 001 is provided at the bottom of the sintering furnace 100. The linkage lifting assembly 001 includes two sets of limiting brackets 201, which are welded and installed on both sides of the lower end of the sintering furnace 100. A drive plate 202 is rotatably arranged on the inner side of the limiting bracket 201, and a limiting plate 204 is rotatably arranged on the outer side of the end of the drive plate 202 away from the limiting bracket 201. A connecting shaft 203 is installed between the two sets of drive plates 202 away from the limiting bracket 201. A limiting shaft 205 is rotatably arranged on the inner side of the end of the limiting plate 204 away from the drive plate 202. A sealing door plate 200 is fixedly installed in the middle of the two sets of limiting shafts 205. A rotating sleeve 402 is rotatably arranged on the outer side of the connecting shaft 203, and a lifting platform 400 is fixedly installed on the top of the rotating sleeve 402.

[0024] The lifting platform 400 has sliding sleeves 401 installed at the bottom of its four corners. Limiting grooves 403 are opened at the top of the four corners of the lifting platform 400. Limiting discs 300 are combined and installed inside the limiting grooves 403. Movable rods 307 are fixedly installed at the bottom of the limiting discs 300. Movable rods 307 are slidably installed inside the sliding sleeves 401. Extrusion discs 306 are installed at the bottom of the movable rods 307. Limiting sleeves 304 are movably installed on the outside of the extrusion discs 306. The top of the extrusion discs 306 and the top of the inner side of the limiting sleeves 304 are elastically connected by a support spring 305. Stable sliders 303 are fixedly installed at the bottom of the limiting sleeves 304. A set of limiting guide rods 302 are provided through the inner side of the two sets of stable sliders 303. A bottom frame 301 is installed on the outer side of the two sets of limiting guide rods 302.

[0025] Using the above scheme: the sintering furnace 100 can sinter the materials inside. The drive plate 202 can be restricted by the limiting bracket 201. The combination of the drive plate 202 and the limiting plate 204 can connect the sealing door plate 200 and the sintering furnace 100. The combination of the drive plate 202 and the limiting plate 204 can drive the connecting shaft 203 to adjust, thereby providing the lifting driving force. The limiting shaft 205 can restrict the limiting plate 204 and assist in the tilting adjustment. The sealing door plate 200 can maintain the heat preservation and sealing of the sintering furnace 100. The rotating sleeve 402 is connected to the connecting shaft 203, which allows for rotation adjustment and synchronous lifting under the action of the connecting shaft 203. The lifting platform 40 The 0 provides support for the top structure. The sliding sleeve 401 can slide and adjust along the outside of the limiting sleeve 304. The limiting groove 403 can restrict the limiting plate 300. After continuous lifting, the limiting plate 300 will be embedded in the inner side of the limiting groove 403, thereby pulling the movable rod 307 up. The limiting sleeve 304 can provide an installation position for the inner structure. The internal support spring 305 will push the extrusion plate 306 downward to achieve the reset effect and prevent the limiting plate 300 and movable rod 307 from separating from the limiting sleeve 304. The bottom frame 301 can restrict the inner limiting guide rod 302. The limiting guide rod 302 can assist the stabilizing slider 303 to slide and adjust.

[0026] like Figures 2-4 As shown, a quick replacement component 002 is provided on the top of the lifting platform 400; The quick-replacement assembly 002 includes a movable plate 600, which is slidably disposed inside the sintering furnace 100. Limiting slide plates 601 are installed on both sides of the movable plate 600, and the limiting slide plates 601 are slidably disposed inside the sintering furnace 100. Arc-shaped sliding grooves 602 are opened on the inner sides of the movable plate 600 and the lifting platform 400. A positioning shaft 501 is rotatably disposed inside the lifting platform 400, and a fixed gear 500 is fixedly installed on the outer side of the positioning shaft 501. A winch 502 is installed at the bottom of the fixed gear 500, and a wire rope 503 is wound around the outer side of the winch 502. The wire rope 503 passes through the inner side of the lifting platform 400, and pull rings 504 are fixedly installed at both ends of the wire rope 503.

[0027] The top of the lifting platform 400 is rotatably provided with a first rotating plate 404, and the bottom of the first rotating plate 404 is provided with a first combined ring 405. The first combined ring 405 is rotatably provided inside the arc-shaped slide groove 602. The bottom of the first rotating plate 404 near the movable plate 600 is provided with a first rotating gear 406, and the first rotating gear 406 is meshed on the back of the fixed gear 500.

[0028] A second rotating plate 603 is rotatably mounted on the top of the movable plate 600, and a second combined ring 604 is installed at the bottom of the second rotating plate 603. The second combined ring 604 is rotatably mounted inside the arc-shaped slide groove 602. A second rotating gear 605 is located at the bottom of the second rotating plate 603 near the lifting platform 400. A storage slot 606 is provided on the top of the first rotating plate 404 and the second rotating plate 603. Two sets of stop blocks 607 are installed on the top of the movable plate 600 at the end away from the lifting platform 400.

[0029] Using the above scheme: the movable plate 600 can be laterally slidable along the inner side of the sintering furnace 100 via the limiting slide plate 601, and the movable plate 600 can provide support for the honeycomb ceramic carrier. The positioning shaft 501 can restrict the rotation of the winch 502. The wire rope 503 is wound around the outside of the winch 502, and the movement of the wire rope 503 can be controlled by pulling the pull ring 504 at the end. This transmission will drive the winch 502 to rotate and adjust along the positioning shaft 501, and simultaneously drive the first... The rotating gear 406 is rotated for adjustment, and the second rotating plate 603 can replace the material at the top by rotating. The first combined ring 405 and the second combined ring 604 can slide stably along the inner side of the arc-shaped slide groove 602. The arc-shaped slide groove 602 can increase the stability of the sliding adjustment by limiting it. The storage slot 606 can provide a storage position for the honeycomb ceramic carrier. The stop block 607 can contact the limiting structure inside the sintering furnace 100 to limit the movable plate 600 and prevent the movable plate 600 from falling off.

[0030] like Figure 8and Figure 9 As shown, an auxiliary pull-out assembly 003 is installed on the back of the lower end of the sealed door panel 200. The auxiliary pull-out assembly 003 includes two sets of connecting plates 701. A positioning frame 702 is installed on the end of the connecting plate 701 away from the sealed door panel 200. The positioning frame 702 is movably embedded in the front of both ends of the movable plate 600. A high-temperature spring 703 is installed on the top of the inner side of the positioning frame 702. An inclined block 700 is installed on the bottom of the high-temperature spring 703. The inclined block 700 is embedded in the inner side of the movable plate 600.

[0031] A helical gear transmission module 801 is installed on the front of the sealing door panel 200, and four sets of transmission rods 803 are fixedly installed at the output end of the helical gear transmission module 801. An adjusting turntable 802 is fixedly installed at the input end of the helical gear transmission module 801. A right-angle transmission module 804 is provided at the end of the transmission rod 803 away from the helical gear transmission module 801. The right-angle transmission module 804 is fixedly installed on the front of the sealing door panel 200. A locking screw 800 is rotatably provided on the back of the right-angle transmission module 804, and the locking screw 800 is located on the back of the sealing door panel 200.

[0032] The above scheme is adopted as follows: the connecting plate 701 is used to connect the positioning frame 702 and the sealing door plate 200. The positioning frame 702 can provide the installation position and restriction for the inner structure. The internal high temperature spring 703 can resist extremely high temperature and avoid the problem inside the sintering furnace 100 from affecting the elastic performance. The tilting block 700 can extend outward to provide a certain degree of locking effect. After the tension exceeds the compressive force of the high temperature spring 703, the tilting block 700 will lose the locking effect. The helical gears inside the helical gear transmission module 801 can transmit the rotational kinetic energy of the adjusting turntable 802. The rotation can drive the four sets of transmission rods 803 to adjust. The right angle transmission module 804 at the end can transmit the rotational kinetic energy to the locking screw 800 through the internal helical gear. Finally, the locking screw 800 drives the sealing door plate 200 to stick tightly to the sintering furnace 100 to ensure the sealing effect.

[0033] like Figure 1 and Figure 5 As shown, a controller 101 is installed on one side of the sintering furnace 100, and four sets of support columns 102 are installed at the bottom of the sintering furnace 100. Four sets of threaded grooves 103 are opened on the front of the sintering furnace 100. The locking screw 800 is rotatably set inside the threaded groove 103. Two sets of limiting guide columns 206 are installed on the back of the upper end of the sealing door panel 200, and the limiting guide columns 206 are slidably set inside the upper end of the sintering furnace 100. Two sets of pull handles 207 are installed on the front of the sealing door panel 200.

[0034] Using the above scheme: the sintering furnace 100 can be controlled and adjusted by the controller 101, the support column 102 can provide support for the top structure, the threaded groove 103 can restrict the locking screw 800, the limiting guide column 206 can restrict the sealing door 200 to ensure that it is in a horizontal movement state when moving laterally, and the pull handle 207 can provide a grip for the user to easily pull and adjust.

[0035] The working principle and usage process of this invention: The adjustment turntable 802 is rotated and adjusted by gripping it. During the rotation, the helical gear inside the helical gear transmission module 801 drives the transmission rod 803 to rotate synchronously. Then, the helical gear inside the right-angle transmission module 804 at the end drives the locking screw 800 to rotate and separate from the threaded groove 103. After separation, the sealing door plate 200 is pulled in the opposite direction to the sintering furnace 100 by gripping the pull handle 207. During the pulling process, the limiting guide column 206 will slide and adjust along the inner side of the upper end of the sintering furnace 100. Continuing to pull will control the limiting plate 204 and the drive plate 202 to flip along the limiting shaft 205 and the limiting bracket 201. The flipping gradually tends to be horizontal with the ground. During the outward extension of the sealing door panel 200, the inclined block 700 inserted inside the movable plate 600 will pull the movable plate 600 to one side in sync until the pulling stop 607 contacts the limiting structure inside the sintering furnace 100. The movable plate 600 will then stop moving. The continuous pulling force of the sealing door panel 200 will push the inclined block 700 to embed inside the positioning frame 702 and separate it from the movable plate 600. During the adjustment process, the connecting shaft 203 of the limit plate 204 and the drive plate 202 will be raised synchronously, and during the raising process, it will move towards the sealing door plate 200. The rise of the connecting shaft 203 will push the rotating sleeve 402 and the lifting platform 400 to rise. The continuously rising limit plate 300 will be embedded in the inner side of the limit groove 403, and the extrusion plate 306 will be raised and the support spring 305 will be compressed by the movable rod 307. The bottom stabilizing slider 303 will slide laterally along the limit guide rod 302. After the lifting platform 400 is raised to its highest point and kept level with the movable plate 600, the shorter set of pull rings 504 of the wire rope 503 is pulled. The wire rope 503 drives the winch 502 and the positioning shaft 501 to rotate. At the same time, the rotation will drive the fixed gear 500 to rotate synchronously. Under the action of gear meshing, the fixed gear 500 will mesh and drive the first rotating gear 406 and the second rotating gear 605 to rotate 180 degrees. At the same time, the first rotating plate 404 and the second rotating plate 603 at the top will slide and adjust stably along the inner side of the arc-shaped slide groove 602 through the first combination ring 405 and the second combination ring 604, and the position of the two sets of rotating plates will be replaced by rotation. After the replacement is completed, push the sealing door plate 200 towards the sintering furnace 100. This push will cause the lifting platform 400 to move downwards and reset. Under the action of the connecting shaft 203, it will move laterally along the limit guide rod 302. At the same time, the connecting plate 701 will contact and push the movable plate 600 to slide along the limit slide plate 601 for adjustment. Continuously push the positioning frame 702 to embed it into the inner side of the movable plate 600. After the locking screw 800 contacts the threaded groove 103, rotate the adjusting turntable 802 to drive the locking screw 800 to embed into the inner side of the threaded groove 103 for locking. Then, the controller 101 controls the sintering furnace 100 to sinter the honeycomb ceramic carrier.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sintering process for composite sintering of a honeycomb ceramic carrier, characterized in that, The sintering process is as follows: S1. Raw material preparation and pretreatment: Using cordierite-alumina as the composite base material, cordierite powder, α-alumina powder, SiO2-MgO composite sintering aid and organic binder are added to deionized water according to the set mass amount; the mixture is wet-ground into a fine slurry using a ball mill, dried in a vacuum drying oven, pulverized and sieved for later use. S2, Molding, Drying and Pre-firing: The pretreated powder is extruded through a screw extruder and a honeycomb die to obtain a honeycomb preform; the preform is subjected to gradient drying to a low moisture content; the dried preform is placed on an alumina sintering plate and placed in a sintering furnace for pre-firing according to the set program, and then cooled to room temperature. After checking for cracks and deformation, it is ready for use. S3. Composite sintering, cooling and post-treatment testing: The pre-fired green body is heated according to the set program for composite sintering, and held at the temperature until the green body is uniformly grayish-white; then it is gradient cooled and taken out when the furnace temperature is low enough; after grinding both ends, cleaning with deionized water and drying, the carrier is obtained; the appearance, size and thermal stability of the carrier also need to be tested. The furnace needs to be cleaned and the equipment needs to be inspected during the process. If the furnace temperature fluctuation exceeds the allowable range, the process is suspended.

2. A sintering apparatus for composite sintering of a honeycomb ceramic carrier, applied to the sintering process of composite sintering of a honeycomb ceramic carrier as described in claim 1, comprising a sintering furnace (100), characterized in that: The bottom of the sintering furnace (100) is provided with a linkage lifting assembly (001). The linkage lifting assembly (001) includes two sets of limiting brackets (201), and the limiting brackets (201) are welded and installed on both sides of the lower end of the sintering furnace (100). A drive plate (202) is rotatably provided on the inner side of the limiting bracket (201), and a limiting plate (204) is rotatably provided on the outer side of the end of the drive plate (202) away from the limiting bracket (201). A connecting shaft (203) is installed between the two sets of drive plates (202) away from the limiting bracket (201). A limiting shaft (205) is rotatably provided on the inner side of the end of the limiting plate (204) away from the drive plate (202). A sealing door plate (200) is fixedly installed in the middle of the two sets of limiting shafts (205). A rotating sleeve (402) is rotatably provided on the outer side of the connecting shaft (203), and a lifting platform (400) is fixedly installed on the top of the rotating sleeve (402).

3. The sintering apparatus for composite sintering of a honeycomb ceramic carrier according to claim 2, characterized in that: The lifting platform (400) has sliding sleeves (401) installed at the bottom of its four corners, and limit grooves (403) are opened at the top of its four corners. Limiting discs (300) are assembled inside the limiting grooves (403), and movable rods (307) are fixedly installed at the bottom of the limiting discs (300). The movable rods (307) are slidably disposed inside the sliding sleeves (401), and extrusion discs (306) are installed at the bottom of the movable rods (307). A limiting sleeve (304) is movably provided on the outer side of the extrusion plate (306). The top of the extrusion plate (306) and the top of the inner side of the limiting sleeve (304) are elastically connected by a support spring (305). A stabilizing slider (303) is fixedly installed at the bottom of the limiting sleeve (304). A set of limiting guide rods (302) is provided through the inner side of the two sets of stabilizing sliders (303). A bottom frame (301) is installed on the outer side of the two sets of limiting guide rods (302).

4. The sintering apparatus for composite sintering of a honeycomb ceramic carrier according to claim 2, characterized in that: The top of the lifting platform (400) is provided with a quick replacement component (002). The quick replacement assembly (002) includes a movable plate (600), which is slidably disposed inside the sintering furnace (100). Limiting slide plates (601) are installed on both sides of the movable plate (600), and the limiting slide plates (601) are slidably disposed inside the sintering furnace (100). Arc-shaped sliding grooves (602) are provided on the inner sides of the movable plate (600) and the lifting platform (400). A positioning shaft (501) is rotatably disposed inside the lifting platform (400), and a fixed gear (500) is fixedly installed on the outer side of the positioning shaft (501). A winch (502) is installed at the bottom of the fixed gear (500), and a wire rope (503) is wound around the outer side of the winch (502). The wire rope (503) passes through the inner side of the lifting platform (400), and pull rings (504) are fixedly installed at both ends of the wire rope (503).

5. The sintering apparatus for composite sintering of a honeycomb ceramic carrier according to claim 4, characterized in that: The top of the lifting platform (400) is rotatably provided with a first rotating plate (404), and the bottom of the first rotating plate (404) is provided with a first combined ring (405). The first combined ring (405) is rotatably provided inside the arc-shaped slide groove (602). The bottom of the first rotating plate (404) near the movable plate (600) is provided with a first rotating gear (406), and the first rotating gear (406) is meshed on the back of the fixed gear (500).

6. The sintering apparatus for composite sintering of a honeycomb ceramic carrier according to claim 5, characterized in that: The top of the movable plate (600) is rotatably provided with a second rotating plate (603), and the bottom of the second rotating plate (603) is provided with a second combined ring (604). The second combined ring (604) is rotatably provided inside the arc-shaped slide groove (602). The bottom of the second rotating plate (603) near the lifting platform (400) has a second rotating gear (605). The top of the first rotating plate (404) and the second rotating plate (603) is provided with a storage slot (606). The top of the movable plate (600) away from the lifting platform (400) is provided with two sets of stops (607).

7. The sintering apparatus for composite sintering of a honeycomb ceramic carrier according to claim 4, characterized in that: An auxiliary pull-out assembly (003) is installed on the back of the lower end of the sealing door panel (200), and the auxiliary pull-out assembly (003) includes two sets of connecting plates (701). A positioning frame (702) is installed on the end of the connecting plate (701) away from the sealing door panel (200), and the positioning frame (702) is movably embedded in the front of both ends of the movable plate (600). A high-temperature spring (703) is installed on the top of the inner side of the positioning frame (702), and an inclined block (700) is installed on the bottom of the high-temperature spring (703), and the inclined block (700) is embedded in the inner side of the movable plate (600).

8. The sintering apparatus for composite sintering of a honeycomb ceramic carrier according to claim 2, characterized in that: A helical gear transmission module (801) is installed on the front of the sealing door panel (200), and four sets of transmission rods (803) are fixedly installed at the output end of the helical gear transmission module (801). An adjustment turntable (802) is fixedly installed at the input end of the helical gear transmission module (801). A right-angle transmission module (804) is provided at the end of the transmission rod (803) away from the helical gear transmission module (801). The right-angle transmission module (804) is fixedly installed on the front of the sealing door panel (200). A locking screw (800) is rotatably provided on the back of the right-angle transmission module (804), and the locking screw (800) is located on the back of the sealing door panel (200).

9. The sintering apparatus for composite sintering of a honeycomb ceramic carrier according to claim 8, characterized in that: A controller (101) is installed on one side of the sintering furnace (100), and four sets of support columns (102) are installed at the bottom of the sintering furnace (100). Four sets of threaded grooves (103) are opened on the front of the sintering furnace (100). The locking screw (800) is rotatably disposed inside the threaded groove (103). Two sets of limiting guide columns (206) are installed on the back of the upper end of the sealing door plate (200), and the limiting guide columns (206) are slidably disposed inside the upper end of the sintering furnace (100). Two sets of pull handles (207) are installed on the front of the sealing door plate (200).

10. A method of using a sintering apparatus for composite sintering of a honeycomb ceramic carrier according to any one of claims 2-9, characterized in that: S1. Grasp the adjustment turntable (802) to rotate and adjust. During the rotation, the helical gear inside the helical gear transmission module (801) drives the transmission rod (803) to rotate synchronously. Then, the helical gear inside the right-angle transmission module (804) at the end drives the locking screw (800) to rotate and separate from the thread groove (103). After separation, grasp the pull handle (207) to pull the sealing door plate (200) in the opposite direction to the sintering furnace (100). During the pulling process, the limiting guide column (206) will slide and adjust along the inner side of the upper end of the sintering furnace (100). Continuing to pull will control the limiting plate (204) and the drive plate (202) to flip along the limiting shaft (205) and the limiting bracket (201). The flipping gradually tends to be horizontal with the ground. S2. During the outward extension process, the inclined block (700) inserted inside the movable plate (600) will pull the movable plate (600) to one side horizontally until the pulling stop (607) contacts the limiting structure inside the sintering furnace (100). The movable plate (600) will stop moving. The continuous pulling force of the sealed door plate (200) will push the inclined block (700) to be embedded in the inner side of the positioning frame (702) and separated from the movable plate (600). S3, the connecting shaft (203) of the limiting plate (204) and the drive plate (202) will be raised synchronously during the adjustment process, and will move towards the sealing door plate (200) during the lifting process. The rising of the connecting shaft (203) will push the rotating sleeve (402) and the lifting platform (400) to rise. The continuously rising limiting plate (300) will be embedded in the inner side of the limiting groove (403), and the extrusion plate (306) will be raised and the support spring (305) will be compressed by the movable rod (307). The bottom stabilizing slider (303) will slide laterally along the limiting guide rod (302). S4. After the lifting platform (400) is raised to the highest point and kept flush with the movable plate (600), pull the shorter set of pull rings (504) of the wire rope (503). The wire rope (503) drives the winch (502) and the positioning shaft (501) to rotate. At the same time, the rotation will drive the fixed gear (500) to rotate synchronously. Under the action of gear meshing, the fixed gear (500) will mesh and drive the first rotating gear (406) and the second rotating gear (605) to rotate 180 degrees. At the same time, the first rotating plate (404) and the second rotating plate (603) at the top will slide and adjust stably along the inner side of the arc-shaped slide groove (602) through the first combined ring (405) and the second combined ring (604). The position of the two sets of rotating plates is replaced by rotation. S5. After the replacement is completed, push the sealing door plate (200) towards the sintering furnace (100). The push will drive the lifting platform (400) to move downward and reset. Under the action of the connecting shaft (203), it moves laterally along the limit guide rod (302). At the same time, the connecting plate (701) will contact and push the movable plate (600) to slide along the limit slide plate (601) for adjustment. Continue to push the positioning frame (702) to embed it into the inner side of the movable plate (600). After the locking screw (800) contacts the thread groove (103), rotate the adjusting turntable (802) to drive the locking screw (800) to embed into the inner side of the thread groove (103) for locking. Then, control the sintering furnace (100) to sinter the honeycomb ceramic carrier through the controller (101).

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