CN113021614A - Polishing and grinding method and device for outer surface of ceramic blank pipe - Google Patents
Polishing and grinding method and device for outer surface of ceramic blank pipe Download PDFInfo
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- CN113021614A CN113021614A CN202110353510.7A CN202110353510A CN113021614A CN 113021614 A CN113021614 A CN 113021614A CN 202110353510 A CN202110353510 A CN 202110353510A CN 113021614 A CN113021614 A CN 113021614A
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- ceramic blank
- blank pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/92—Methods or apparatus for treating or reshaping
- B28B21/96—Methods or apparatus for treating or reshaping for smoothing, roughening, corrugating or for removing burr
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
- B24B29/06—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces for elongated workpieces having uniform cross-section in one main direction
- B24B29/08—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces for elongated workpieces having uniform cross-section in one main direction the cross-section being circular, e.g. tubes, wires, needles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention discloses a polishing method and a device for the outer surface of a ceramic blank pipe, wherein the method comprises the steps of pushing the ceramic blank pipe on a supporting plate from a feeding area to a gap between a guide wheel and a polishing wheel in a polishing area through a push rod on a conveying belt, radially positioning the ceramic blank pipe through the supporting plate, adjusting the distance between the guide wheel and the polishing wheel and the ceramic blank pipe, controlling the guide wheel and the polishing wheel to rotate in the same direction, driving the ceramic blank pipe to rotate on a horizontal plane and automatically move from front to back under the action of the guide wheel and the polishing wheel, polishing the outer circle of the ceramic blank pipe to a designed size through the polishing wheel, and pushing the outer circle of the ceramic blank pipe to the conveying belt in a discharging area through the push rod to finish polishing work. The device disclosed by the invention is used for polishing and grinding, can realize automatic operation, reduces the processing cost and the processing difficulty, effectively reduces the breakage rate, improves the polishing efficiency and the qualification rate of products, has the advantages of convenience in operation, stable quality and the like, and is suitable for popularization and application.
Description
Technical Field
The invention relates to the technical field of thin-wall ceramic tube processing, in particular to a polishing and grinding method and a polishing and grinding device for the outer surface of a ceramic blank tube.
Background
The ceramic tube is made of alumina having excellent insulation, high temperature resistance and chemical stability as a main component, and can be widely used in the fields of insulating tubes, protective tubes, electron tubes, arc tubes and the like. The high-voltage sodium lamp has stable discharge, emits golden white light when in use, has the advantages of high luminous efficiency, low power consumption, long service life, strong fog penetration capability, no insect attraction and the like, and is widely applied to different fields. The transparent alumina ceramic tube is adopted as a wick (arc tube) of the high-pressure sodium lamp, and the ceramic tube is mainly characterized in that the size of the tube body is small, the length of the tube body is generally 50-180 mm, the inner diameter of the tube body is 3.25-9 mm, the wall thickness of the tube body is 0.6-0.8 mm, and the tube is small in size and particularly thin in wall thickness. Because the aluminum oxide ceramic tube is prepared by sintering aluminum oxide powder after isostatic pressing, the surface of the tube body is relatively rough, the surface of the tube body needs to be polished to be close to a mirror surface in order to improve the luminous flux and the luminous efficiency of the high-pressure sodium lamp, and the aluminum oxide ceramic tube has high hardness and high brittleness after being made into porcelain, so that the surface of the aluminum oxide ceramic tube cannot be polished, and the aluminum oxide ceramic tube is pre-processed when a blank is made (not sintered into porcelain at high temperature). Even so, there is still the problem of cracking due to thin wall thickness, brittle material, and large local load during polishing.
According to market research, no polishing and grinding equipment suitable for the ceramic blank tube exists at present, the currently adopted polishing method is a conventional polishing method, the specific polishing process is to fix the tube body on a rotating shaft and carry out surface grinding by carborundum paper, two grinding procedures of rough grinding and fine grinding are generally adopted, and the whole process is manual operation. The polishing is carried out manually, so that the labor intensity of operators is high and the production efficiency is low; secondly, the polishing amount is difficult to accurately control during manual operation, the polishing quality is unstable, and the precision is poor; moreover, in the polishing process, the polishing powder flies, dust easily enters human respiratory tracts and skin, the noise is high, the production environment is severe, the human health is harmed, and the manual production cost is high. Therefore, the existing manual polishing method is low in efficiency, high in labor cost, large in abrasive paper consumption, low in qualified rate and high in breakage ratio. Therefore, aiming at the existing polishing condition, the problem that the ceramic blank pipe is easy to jump and damage in the polishing process is avoided by using the centerless grinding principle, and an automatic polishing method and device which are efficient, environment-friendly and stable in quality are required to be developed, so that the labor cost is reduced, the qualification rate of products is improved, and the problem of high damage ratio is effectively reduced.
Disclosure of Invention
The invention aims to solve the technical problems in the background art, and utilizes the centerless grinding polishing principle to improve an automatic polishing method and device with high efficiency, environmental protection and stable quality, thereby reducing the processing cost and processing difficulty, improving the polishing efficiency and the qualification rate of products, and particularly relates to a polishing method and device for the outer surface of a ceramic blank pipe.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the method comprises the steps that a ceramic blank pipe on a supporting plate is pushed into a gap between a guide wheel and a polishing wheel in a polishing area from a feeding area through a push rod on a conveying belt, the ceramic blank pipe is positioned in the radial direction through the supporting plate arranged at the bottom of the gap between the guide wheel and the polishing wheel, the distance between the guide wheel and the ceramic blank pipe and the distance between the polishing wheel and the ceramic blank pipe are adjusted, and the height between the center connecting line of the guide wheel and the polishing wheel and the center of the ceramic blank pipe is 1/3-1/4 of the diameter of the ceramic blank pipe; the polishing device comprises a guide wheel, a polishing area, a pushing rod, a supporting plate, a polishing wheel, a polishing head and a polishing head.
Further, the polishing and grinding method for the outer surface of the ceramic blank pipe is characterized in that the linear speed of the polishing wheel acting on the surface of the ceramic blank pipe is 300-500 m/min, and the diameter of the polishing wheel is 250 mm; and the diameter of the guide wheel is 150-200 mm.
Further, the polishing and grinding method for the outer surface of the ceramic blank pipe is characterized in that the rotating speed of the ceramic blank pipe in a grinding area is 60-120 r/min; the pushing speed of the push rod on the conveying belt is the same as or slightly less than the moving speed of the ceramic blank tube in the polishing area.
The invention aims to solve another problem of providing a device with high automation degree and convenient operation, and the device can be used for conveniently implementing the polishing and grinding method for the outer surface of the ceramic blank pipe, thereby improving the polishing efficiency and the qualification rate of products. In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the device comprises a guide wheel, a polishing wheel, an anti-jumping wheel, a conveying belt and a push rod, wherein a gap is formed between the guide wheel and the polishing wheel, a supporting plate is arranged below the gap and used for supporting a ceramic blank pipe to be polished and polished, the upper surface of the supporting plate is an inclined surface, and the inclined surface is parallel to the axial direction of the ceramic blank pipe; the anti-jumping wheel is provided with four anti-jumping wheels, the front end and the rear end of the guide wheel and the polishing wheel are respectively provided with two anti-jumping wheels, the four anti-jumping wheels are symmetrically arranged on two sides of the supporting plate, the conveying belt is arranged right above the supporting plate and is arranged in parallel with the supporting plate, the conveying belt is provided with a plurality of push rods, and the push rods are used for pushing ceramic blank tubes on the supporting plate to an inclined plane in the middle of the supporting plate.
Further, the polishing wheel is composed of three wire wheels which are arranged in parallel and are integrated, wherein the three wire wheels are a coarse grinding wire wheel, a fine grinding wire wheel and a cleaning wire wheel respectively from front to back along the moving direction of the ceramic blank pipe, the coarse grinding wire wheel adopts a 200-mesh sand-carrying Dewar wire wheel, the fine grinding wire wheel adopts a 600-mesh sand-carrying Dewar wire wheel, and the cleaning wire wheel adopts a nylon wire wheel; and the guide wheel adopts a rubber wheel.
Further, the inclined plane of the upper surface of the supporting plate has an inclination angle of 30 degrees, and the top of the inclined plane is an edge, so that the ceramic blank pipe is axially positioned by the inclined plane of the upper surface of the supporting plate.
The device further comprises a driving mechanism, the driving mechanism is used for providing power for the conveying belt, the guide wheel and the polishing wheel, the conveying belt can realize precise speed regulation under the action of the driving mechanism, and the guide wheel and the polishing wheel can realize stepless speed regulation under the action of the driving mechanism.
Compared with the prior art, the polishing and grinding method and the device for the outer surface of the ceramic blank pipe have the beneficial effects that: because the push rod is arranged on the conveying belt, the ceramic blank tubes on the supporting plate can be conveniently pushed to the supporting plate in the polishing area from the feeding area by utilizing the push rod, the ceramic blank tubes are axially positioned by the inclined surface of the upper surface of the supporting plate, and finally, under the action of the polishing wheel, coarse grinding, fine grinding and cleaning treatment can be carried out on the outer surface of the ceramic blank tubes. The device disclosed by the invention is used for polishing and grinding, and can realize automatic operation, thereby reducing the processing cost and processing difficulty, effectively reducing the breakage rate, improving the polishing efficiency and the qualification rate of products, enabling the processed thin-wall ceramic blank tube to meet the use requirement of a high-pressure sodium lamp, having the advantages of convenience in operation, stable quality and the like, and being suitable for popularization and application.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of an apparatus used in the polishing and grinding method of the present invention;
fig. 2 is a schematic structural diagram of the arrangement of the conveyer belt and the supporting plate in the device.
Shown in the figure: 1-guide wheel, 2-polishing wheel, 21-coarse grinding wire wheel, 22-fine grinding wire wheel, 23-cleaning wire wheel, 3-anti-jumping wheel, 4-conveying belt, 5-push rod, 6-supporting plate and 7-ceramic blank tube.
Detailed Description
To further illustrate the concepts of the present invention, embodiments of the present invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1 and 2, the method for polishing the outer surface of the ceramic raw pipe according to the present invention is that the ceramic raw pipe 7 on the supporting plate 6 is pushed into the gap between the guide wheel 1 and the polishing wheel 2 in the polishing area from the feeding area by the pushing rod 5 on the conveyer belt 4, and the ceramic raw pipe 7 is positioned radially by the supporting plate 6 arranged at the bottom of the gap between the guide wheel 1 and the polishing wheel 2, and the distance between the guide wheel 1 and the polishing wheel 2 and the ceramic raw pipe 7 is adjusted so that the height between the center connecting line of the guide wheel 1 and the polishing wheel 2 and the center of the ceramic raw pipe 7 is 1/3 to 1/4 of the diameter of the ceramic raw pipe 7; the control guide wheel 1 and the polishing wheel 2 rotate in the same direction, under the action of the guide wheel 1 and the polishing wheel 2, the ceramic blank pipe 7 is driven to rotate on the horizontal plane and automatically move from front to back, the outer circle of the ceramic blank pipe 7 is polished by the polishing wheel 2, the ceramic blank pipe 7 is polished to a designed size, and finally pushed to the supporting plate 6 in the discharging area through the push rod 5, the polishing area is moved out, and polishing work is completed.
Further, the polishing and grinding method for the outer surface of the ceramic raw pipe is characterized in that the linear speed of the polishing wheel 2 acting on the surface of the ceramic raw pipe 7 is 300-500 m/min, and the diameter of the polishing wheel 2 is 250 mm; and the diameter of the guide wheel 1 is 150-200 mm.
Further, the polishing and grinding method for the outer surface of the ceramic blank pipe is characterized in that the rotating speed of the ceramic blank pipe 7 in a grinding area is 60-120 r/min; the pushing speed of the push rod 5 on the conveyer belt 4 is the same as or slightly less than the moving speed of the ceramic blank tube 7 in the grinding area.
Another object of the present invention is to provide a device with high automation degree and convenient operation, which can be used to conveniently implement the above polishing method for the outer surface of the ceramic parison tube, thereby improving the polishing efficiency and the qualification rate of the product. In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the device comprises a guide wheel 1, a polishing wheel 2, an anti-jumping wheel 3, a conveying belt 4 and a push rod 5, wherein a gap is formed between the guide wheel 1 and the polishing wheel 2, a supporting plate 6 is arranged below the gap, the supporting plate 6 is used for supporting a ceramic blank pipe 7 to be polished and polished, the upper surface of the supporting plate 6 is an inclined surface, and the inclined surface is parallel to the axial direction of the ceramic blank pipe 7; the anti-skipping wheel 3 is provided with four anti-skipping wheels, two anti-skipping wheels 3 are respectively arranged at the front end and the rear end of the guide wheel 1 and the polishing wheel 2, the four anti-skipping wheels 3 are symmetrically arranged on two sides of the supporting plate 6, the conveying belt 4 is arranged right above the supporting plate 6 and is parallel to the supporting plate 6, a plurality of push rods 5 are arranged on the conveying belt 4, and the push rods 5 are used for pushing ceramic blank tubes 7 on the conveying belt 4 to an inclined plane in the middle of the supporting plate 6.
Further, the device of the present invention, wherein the polishing wheel 2 is composed of three wire wheels arranged side by side as one body, the three wire wheels are a rough grinding wheel 21, a fine grinding wheel 22 and a cleaning wheel 23 respectively from front to back along the moving direction of the ceramic raw pipe 7, wherein the rough grinding wheel 21 is a 200-mesh sand-carrying Duassembly wire wheel, the fine grinding wheel 22 is a 600-mesh sand-carrying Duassembly wire wheel, and the cleaning wheel 23 is a nylon wire wheel; and the guide wheel 1 adopts a rubber wheel.
Further, the device of the present invention, wherein the inclined surface of the upper surface of the supporting plate 6 has an inclination angle of 30 degrees, and the top of the inclined surface is an edge, and the ceramic raw pipe 7 is axially positioned by the inclined surface of the upper surface of the supporting plate 6.
Furthermore, the device provided by the invention also comprises a driving mechanism, the driving mechanism is used for providing power for the conveying belt 4, the guide wheel 1 and the polishing wheel 2, the conveying belt 4 can realize precise speed regulation under the action of the driving mechanism, and the guide wheel 1 and the polishing wheel 2 can realize stepless speed regulation under the action of the driving mechanism.
According to the polishing and grinding method and device for the outer surface of the ceramic tube blank, the push rod 5 is arranged on the conveying belt 4, the ceramic tube blank 7 on the supporting plate 6 can be directly pushed to a grinding area by the push rod 5, the polishing wheel 2 is composed of three wire wheels which are arranged in parallel and integrated, the three wire wheels are respectively a rough grinding wire wheel 21, a fine grinding wire wheel 22 and a cleaning wire wheel 23 from front to back along the moving direction of the ceramic tube blank 7, and the rough grinding to the fine grinding and the surface cleaning are carried out finally through the three wire wheels. Simultaneously, because ceramic parison tube 7 just gets into the zone time of polishing, because the effort of polishing can lead to the parison tube opposite side to appear beating in one side of parison tube, lead to the unstable problem of operation easily, in the polishing in-process of polishing like this, very easily damage ceramic parison tube 7, so need install two additional respectively at business turn over both ends and prevent jumping wheel 3, through preventing jumping wheel 3 that sets up, can effective control ceramic parison tube 7 the problem that beats appears in the polishing in-process of polishing, it is thus visible, through preventing jumping wheel 3 that sets up, can improve the stability of whole course of working. In addition, the pushing speed of the push rod 5 on the conveyer belt 4 is set to be the same as or slightly less than the moving speed of the ceramic blank tube 7 in the grinding area, so as to avoid the problem that the ceramic blank tube 7 is damaged due to collision between the ceramic blank tube 7 and the push rod 5 during grinding and polishing.
In conclusion, the device provided by the invention is used for polishing and grinding the ceramic blank tube 7, and can realize automatic operation, thereby reducing the processing cost and the processing difficulty, effectively reducing the breakage rate, improving the polishing efficiency and the qualification rate of products, ensuring that the processed thin-wall ceramic blank tube can meet the use requirement of a high-pressure sodium lamp, having the advantages of convenience in operation, stable quality and the like, and being suitable for popularization and application.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art, and any modifications, equivalents, improvements, etc. made by using the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A polishing and grinding method for the outer surface of a ceramic blank pipe is characterized by comprising the following steps: the method comprises the steps that a ceramic blank tube (7) on a supporting plate (6) is pushed into a gap between a guide wheel (1) and a polishing wheel (2) in a polishing area from a feeding area through a push rod (5) on a conveying belt (4), the ceramic blank tube (7) is radially positioned through the supporting plate (6) arranged at the bottom of the gap between the guide wheel (1) and the polishing wheel (2), the distance between the guide wheel (1) and the polishing wheel (2) and the ceramic blank tube (7) is adjusted, and the height between the central connecting line of the guide wheel (1) and the polishing wheel (2) and the center of the ceramic blank tube (7) is 1/3-1/4 of the diameter of the ceramic blank tube (7); the control guide wheel (1) and the polishing wheel (2) rotate in the same direction, under the action of the guide wheel (1) and the polishing wheel (2), the ceramic blank pipe (7) is driven to rotate on the horizontal plane and automatically moves from front to back, the outer circle of the ceramic blank pipe (7) is polished and polished by the polishing wheel (2), the ceramic blank pipe (7) is polished to the designed size through polishing, and finally the ceramic blank pipe is pushed to a conveying belt (4) in the discharging area through a push rod (5), and the polishing area is moved out, so that the polishing and polishing work is completed.
2. The method of claim 1, wherein the polishing step comprises: the linear speed of the polishing wheel (2) acting on the surface of the ceramic blank pipe (7) is 300-500 m/min, and the diameter of the polishing wheel (2) is 250 mm; the diameter of the guide wheel (1) is 150-200 mm.
3. The method of claim 1, wherein the polishing step comprises: the rotating speed of the ceramic blank tube (7) in the polishing area is 60-120 r/min; the pushing speed of the push rod (5) on the conveying belt (4) is the same as or slightly less than the moving speed of the ceramic blank tube (7) in the grinding area.
4. An apparatus for carrying out the polishing and grinding method according to any one of claims 1 to 3, characterized in that: the device comprises a guide wheel (1), a polishing wheel (2), an anti-bouncing wheel (3), a conveying belt (4) and a push rod (5), wherein a gap is formed between the guide wheel (1) and the polishing wheel (2), a supporting plate (6) is arranged below the gap, the supporting plate (6) is used for supporting a ceramic blank pipe (7) to be polished, the upper surface of the supporting plate (6) is an inclined surface, and the inclined surface is parallel to the axial direction of the ceramic blank pipe (7); prevent jumping wheel (3) and be equipped with four the front end and the rear end of guide pulley (1) and throwing aureola (2) are equipped with two respectively and prevent jumping wheel (3), four prevent jumping wheel (3) be symmetrical state arrange in layer board (6) both sides, conveyer belt (4) set up in directly over layer board (6), and with layer board (6) are parallel state and arrange be equipped with a plurality of push rods (5) on conveyer belt (4), utilize on push rod (5) with ceramic base pipe (7) propelling movement on layer board (6) feeding zone to the inclined plane of the district of polishing in the middle of layer board (6).
5. The apparatus of claim 4, wherein: the polishing wheel (2) consists of three wire wheels which are arranged in parallel to form a whole, the three wire wheels are respectively a rough grinding wire wheel (21), a fine grinding wire wheel (22) and a cleaning wire wheel (23) from front to back along the moving direction of the ceramic blank tube (7), wherein the rough grinding wire wheel (21) adopts a 200-mesh sand-carrying Duvel wire wheel, the fine grinding wire wheel (22) adopts a 600-mesh sand-carrying Duvel wire wheel, and the cleaning wire wheel (23) adopts a nylon wire wheel; and the guide wheel (1) adopts a rubber wheel.
6. The apparatus of claim 4, wherein: the inclined plane of the upper surface of the supporting plate (6) has an inclination angle of 30 degrees, the top of the inclined plane is an edge, and the ceramic blank pipe (7) is axially positioned by the inclined plane of the upper surface of the supporting plate (6).
7. The apparatus of claim 4, wherein: the automatic polishing machine is characterized by further comprising a driving mechanism, wherein the driving mechanism is used for providing power for the conveying belt (4), the guide wheel (1) and the polishing wheel (2), the conveying belt (4) can realize precise speed regulation under the action of the driving mechanism, and the guide wheel (1) and the polishing wheel (2) can realize stepless speed regulation under the action of the driving mechanism.
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| CN202110353510.7A CN113021614A (en) | 2021-04-01 | 2021-04-01 | Polishing and grinding method and device for outer surface of ceramic blank pipe |
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| CN202110353510.7A CN113021614A (en) | 2021-04-01 | 2021-04-01 | Polishing and grinding method and device for outer surface of ceramic blank pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116766371A (en) * | 2023-06-05 | 2023-09-19 | 广东佛山市陶瓷研究所控股集团股份有限公司 | Drying and shaping machine and preparation system for silicon carbide ceramic tube |
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