CN113566559A - Sintering device for preparing low-temperature sintered piezoelectric ceramics - Google Patents
Sintering device for preparing low-temperature sintered piezoelectric ceramics Download PDFInfo
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- CN113566559A CN113566559A CN202110898211.1A CN202110898211A CN113566559A CN 113566559 A CN113566559 A CN 113566559A CN 202110898211 A CN202110898211 A CN 202110898211A CN 113566559 A CN113566559 A CN 113566559A
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- chromium
- power supply
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- 238000005245 sintering Methods 0.000 title claims abstract description 126
- 239000000919 ceramic Substances 0.000 title claims abstract description 37
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims abstract description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000741 silica gel Substances 0.000 claims abstract description 23
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims abstract description 10
- 238000005485 electric heating Methods 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 17
- 230000005684 electric field Effects 0.000 abstract description 16
- 238000007789 sealing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- 230000010287 polarization Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 239000013598 vector Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009766 low-temperature sintering Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000010897 surface acoustic wave method Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00
- F27B17/0016—Chamber type furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories or equipment specially adapted for furnaces of these types
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories or equipment specially adapted for furnaces of these types
- F27B5/08—Arrangements of linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories or equipment specially adapted for furnaces of these types
- F27B5/14—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/04—Sintering
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses a sintering device for preparing low-temperature sintered piezoelectric ceramics, which comprises a first power supply, a second power supply, a first mounting block and a second mounting block, wherein the first mounting block is connected with the second mounting block through a lifting mechanism; the inside of first installation piece, second installation piece corresponds respectively and is provided with first sintering dish, second sintering dish, first standing groove, second standing groove have been seted up along the arc correspondence respectively to the inner wall of first sintering dish, second sintering dish, the both ends of first standing groove, second standing groove correspond respectively and are provided with first conductive silica gel, and the middle part inner wall is provided with chromium-nickel conductive wire respectively, and a plurality of chromium-nickel conductive wire is through first conductive silica gel electric connection, chromium-nickel conductive wire and first power electric connection. According to the invention, the chromium-nickel conductive wires are used for generating an electric field around the first sintering disc and the second sintering disc, so that the temperature and the time required by sintering are reduced under the influence of the electric field, and the chromium-nickel conductive wire has better practicability.
Description
Technical Field
The invention belongs to the technical field of piezoelectric ceramic material sintering devices, and particularly relates to a sintering device for preparing low-temperature sintered piezoelectric ceramics.
Background
The piezoelectric ceramics are mainly used for manufacturing ultrasonic transducers, underwater transducers, electroacoustic transducers, ceramic filters, ceramic transformers, ceramic frequency discriminators, high-voltage generators, infrared detectors, surface acoustic wave devices, electro-optical devices, ignition and detonation devices, piezoelectric gyros and other equipment.
Piezoelectric ceramics are a class of electronic ceramic materials having piezoelectric properties. The main differences from a typical piezoelectric quartz crystal that does not contain a ferroelectric component are: the crystal phases constituting the main components are all ferroelectric crystal grains. Since the ceramic is a polycrystalline aggregate in which the crystal grains are randomly oriented, the spontaneous polarization vectors of the individual ferroelectric crystal grains therein are also disorderly oriented. In order to make the ceramics exhibit macroscopic piezoelectric characteristics, it is necessary to subject the piezoelectric ceramics to a strong direct current electric field after firing and being repolarized at the end faces, and then to perform a polarization treatment so that the respective polarization vectors of the original disordered orientations are preferentially oriented in the direction of the electric field. After the electric field is cancelled, the piezoelectric ceramic after polarization treatment can retain a certain macroscopic remanent polarization strength, so that the ceramic has a certain piezoelectric property.
When the existing piezoelectric ceramic is used, the piezoelectric ceramic is fatigued due to stress generated in the long-time use process, the Curie temperature of the piezoelectric ceramic is not high, and the service life of the piezoelectric ceramic is further shortened; and when the piezoelectric ceramics are sintered, the piezoelectric ceramics need to be sintered at high temperature for a long time, so that the processing efficiency of the piezoelectric ceramics is reduced, and the energy consumption of a sintering furnace is increased.
Disclosure of Invention
The invention aims to provide a sintering device for preparing low-temperature sintered piezoelectric ceramics, and aims to solve the problems.
The invention is mainly realized by the following technical scheme:
a sintering device for preparing low-temperature sintered piezoelectric ceramics comprises a first power supply, a second power supply, a first mounting block and a second mounting block, wherein the first mounting block and the second mounting block are sequentially arranged from bottom to top; the first mounting block and the second mounting block are respectively provided with a plurality of electric heating plates electrically connected with a second power supply along the inner wall, a first sintering disc and a second sintering disc are respectively and correspondingly arranged inside the first mounting block and the second mounting block, and the first sintering disc and the second sintering disc form a sintering cavity; the inner walls of the first sintering disc and the second sintering disc are respectively provided with a plurality of first placing grooves and second placing grooves along arc-shaped correspondence, the two ends of the first placing grooves and the two ends of the second placing grooves are respectively provided with first conductive silica gel in a corresponding mode, the inner walls of the middle portions of the first placing grooves and the second placing grooves are respectively provided with chromium-nickel conductive wires, the chromium-nickel conductive wires are electrically connected through the first conductive silica gel, and the chromium-nickel conductive wires of the first sintering disc and the second sintering disc are respectively electrically connected with the positive electrode power connection end and the negative electrode power connection end of the first power supply.
When the device is used, a blank subjected to plastic discharging is placed in the first sintering disc, the hydraulic cylinder is controlled to be started, the second mounting block and the second sintering disc are driven to move downwards, the second mounting block is enabled to be in contact with the first mounting block, the second sintering disc is enabled to be in contact with the first sintering disc, and a sealing state is formed between the first mounting block and the second mounting block and between the first sintering disc and the second sintering disc. And the chromium-nickel conductive wires in the first sintering disc and the chromium-nickel conductive wires in the second sintering disc are electrified through the first conductive silica gel. And the electric wire in the first mounting block and the electric wire in the second mounting block are electrified through second conductive silica gel. Controlling a first power supply to supply power to the chromium-nickel conductive wire, so that an electric field is generated around the first sintering disc and the second sintering disc; the second power supply controls the plurality of electric heating plates to uniformly heat the cavity between the first mounting block and the second mounting block.
In order to better implement the invention, further, the chromium-nickel conductive wires of the first sintering disc and the second sintering disc respectively penetrate through the first mounting block and are electrically connected with the positive electrode electric connection end and the negative electrode electric connection end of the first power supply. According to the invention, the first power supply is controlled to supply power to the chromium-nickel conductive wire, so that an electric field is generated around the first sintering disc and the second sintering disc, and the temperature and the time required by sintering are reduced under the influence of the electric field, thereby solving the problems that the conventional piezoelectric ceramic generates fatigue, the Curie temperature of the piezoelectric ceramic is not high, the service life of the piezoelectric ceramic is further shortened, and long-time high-temperature sintering is required during the sintering of the piezoelectric ceramic, the processing efficiency of the piezoelectric ceramic is reduced, and the energy consumption of a sintering furnace is increased.
In order to better realize the invention, further, communication ports are respectively arranged in the first mounting block and the second mounting block along an arc shape, and second conductive silica gel is respectively and correspondingly arranged at two ends of the communication ports of the first mounting block and the second mounting block; the connecting port of the second mounting block is internally provided with an electric wire, and the connecting port of the first mounting block is internally provided with two electric wires which are respectively and electrically connected with the positive electrode connecting end and the negative electrode connecting end of the second power supply; the electric wires are electrically connected with the second conductive silica gel and are respectively electrically connected with the electric heating plates.
In order to better implement the present invention, further, two wires in the communication port of the first mounting block respectively pass through the first mounting block and are connected with a second power supply.
In order to better realize the invention, furthermore, two ends inside the first mounting block are respectively and fixedly provided with a connecting rod, and a first sintering disc is fixedly arranged between the adjacent connecting rods; the inside of second installation piece is provided with the bracing piece, the bottom of bracing piece corresponds first fritting dish fixed second fritting dish that is provided with.
In order to better realize the invention, the lifting mechanism further comprises supporting blocks and a hydraulic driving device, the supporting blocks are respectively arranged at the end parts of the first mounting block and the second mounting block on the same side, and the hydraulic driving device is arranged between the adjacent supporting blocks. In the using process of the sintering device, the first mounting block is in sealing contact with or separated from the second mounting block through the lifting mechanism, and the first sintering disc is correspondingly in sealing contact with or separated from the second sintering disc.
In order to better implement the present invention, further, two sides of the first mounting block are respectively provided with a lifting mechanism.
The invention has the beneficial effects that:
(1) according to the invention, the chromium-nickel conductive wire is arranged, so that the effects that the first power supply is controlled to supply power to the chromium-nickel conductive wire, an electric field is generated around the first sintering disc and the second sintering disc, the temperature required by sintering and the time required by sintering are reduced under the influence of the electric field are achieved, and the chromium-nickel conductive wire has better practicability;
(2) according to the invention, by arranging the electric heating plates, the effect of heating the cavity between the first mounting block and the second mounting block by controlling the plurality of electric heating plates through the second power supply and further uniformly sintering the blank is achieved, so that the problem that the cavity between the first mounting block and the second mounting block cannot be uniformly heated due to the distribution of the existing heating element is solved.
Drawings
FIG. 1 is a schematic structural view of a sintering apparatus according to the present invention;
FIG. 2 is a schematic view of a first mounting block;
FIG. 3 is a cross-sectional view of a first mounting block;
FIG. 4 is a cross-sectional view of a second mounting block;
fig. 5 is an enlarged view of a portion a in fig. 3.
Wherein: 1. supporting legs; 2. mounting a plate; 3. a first power supply; 4. a second power supply; 5. a first mounting block; 6. a second mounting block; 7. a connecting rod; 8. a support block; 9. an installation port; 10. a hydraulic cylinder; 11. a first sintering tray; 12. a support bar; 13. a second fritted disc; 14. an electric hot plate; 15. a first placing groove; 16. a second placing groove; 17. a first conductive silica gel; 18. chromium-nickel conductive wires; 19. a communication port; 20. an electric wire; 21. and second conductive silica gel.
Detailed Description
Example 1:
a sintering device for preparing low-temperature sintered piezoelectric ceramics is shown in figures 3-5 and comprises a first power supply 3, a second power supply 4, a first mounting block 5 and a second mounting block 6 which are sequentially arranged from bottom to top, wherein the first mounting block 5 is connected with the second mounting block 6 through a lifting mechanism; the first mounting block 5 and the second mounting block 6 are respectively provided with a plurality of electric heating plates 14 electrically connected with the second power supply 4 along the inner wall, the first mounting block 5 and the second mounting block 6 are respectively and correspondingly provided with a first sintering disc 11 and a second sintering disc 13 inside, and the first sintering disc 11 and the second sintering disc 13 form a sintering cavity; the inner walls of the first sintering disc 11 and the second sintering disc 13 are respectively provided with a plurality of first placing grooves 15 and a plurality of second placing grooves 16 along arc-shaped correspondence, the two ends of the first placing grooves 15 and the two ends of the second placing grooves 16 are respectively provided with first conductive silica gel 17, the inner walls of the middle parts of the first placing grooves 15 and the second placing grooves 16 are respectively provided with chromium-nickel conductive wires 18, the chromium-nickel conductive wires 18 are electrically connected through the first conductive silica gel 17, and the chromium-nickel conductive wires 18 of the first sintering disc 11 and the second sintering disc 13 are respectively electrically connected with the positive electrode electric end and the negative electrode electric end of the first power supply 3.
Further, the chromium-nickel conductive wires 18 of the first sintering disc 11 and the second sintering disc 13 respectively penetrate through the first mounting block 5 and are electrically connected with the positive electrode electrical connection end and the negative electrode electrical connection end of the first power supply 3.
When the device is used, a blank subjected to plastic discharging is placed in the first sintering disc 11, the hydraulic cylinder 10 is controlled to be started, the second mounting block 6 and the second sintering disc 13 are driven to move downwards, the second mounting block 6 is enabled to be in contact with the first mounting block 5, and the second sintering disc 13 is enabled to be in contact with the first sintering disc 11 until a sealing state is formed between the first mounting block 5 and the second mounting block 6 and between the first sintering disc 11 and the second sintering disc 13. The chrome-nickel conductive wires 18 in the first sintering disc 11 and the chrome-nickel conductive wires 18 in the second sintering disc 13 are electrified through the first conductive silica gel 17. The electric wires 20 in the first mounting block 5 and the electric wires 20 in the second mounting block 6 are electrified through the second conductive silicone rubber 21. Controlling a first power supply 3 to supply power to the chromium-nickel conductive wire 18, so that an electric field is generated around the first sintering disc 11 and the second sintering disc 13; the second power supply 4 controls a plurality of electric heating plates 14 to uniformly heat the cavity between the first mounting block 5 and the second mounting block 6.
According to the invention, by arranging the chromium-nickel conductive wire 18, the effect that the first power supply 3 is controlled to supply power to the chromium-nickel conductive wire 18, so that an electric field is generated around the first sintering disc 11 and the second sintering disc 13, the temperature required by sintering and the time required by sintering are reduced under the influence of the electric field is achieved, and the chromium-nickel conductive wire has better practicability.
Example 2:
in this embodiment, optimization is performed on the basis of embodiment 1, as shown in fig. 3, communication ports 19 are respectively formed in the first mounting block 5 and the second mounting block 6 along an arc shape, and second conductive silica gel 21 is correspondingly disposed at two ends of the communication ports 19 of the first mounting block 5 and the second mounting block 6; an electric wire 20 is arranged in the communication port 19 of the second mounting block 6, two electric wires 20 are arranged in the communication port 19 of the first mounting block 5, and the two electric wires 20 are respectively and electrically connected with the positive electrode electric connection end and the negative electrode electric connection end of the second power supply 4; the plurality of electric wires 20 are electrically connected through the second conductive silicone 21, and the electric wires 20 are electrically connected to the plurality of electric heating plates 14, respectively.
Further, the two electric wires 20 in the communication port 19 of the first mounting block 5 pass through the first mounting block 5 and are connected to the second power source 4.
According to the invention, by arranging the electric heating plates 14, the effect of controlling the plurality of electric heating plates 14 to heat the cavity between the first mounting block 5 and the second mounting block 6 through the second power supply 4 so as to uniformly sinter the blank is achieved, so that the problem that the cavity between the first mounting block 5 and the second mounting block 6 cannot be uniformly heated due to the distribution of the existing heating elements is solved, and the electric heating device has better practicability.
Other parts of this embodiment are the same as embodiment 1, and thus are not described again.
Example 3:
the embodiment is optimized on the basis of embodiment 1 or 2, as shown in fig. 2, two ends inside the first mounting block 5 are respectively and fixedly provided with a connecting rod 7, and a first sintering disc 11 is fixedly arranged between adjacent connecting rods 7; a support rod 12 is arranged inside the second mounting block 6, and a second sintering disc 13 is fixedly arranged at the bottom of the support rod 12 corresponding to the first sintering disc 11.
The rest of this embodiment is the same as embodiment 1 or 2, and therefore, the description thereof is omitted.
Example 4:
in this embodiment, optimization is performed on the basis of any one of embodiments 1 to 3, as shown in fig. 1 and 2, the lifting mechanism includes a supporting block 8 and a hydraulic driving device, the supporting blocks 8 are respectively disposed at the end portions of the first mounting block 5 and the second mounting block 6 on the same side, and the hydraulic driving device is disposed between the adjacent supporting blocks 8.
Furthermore, two sides of the first mounting block 5 are respectively provided with a lifting mechanism. In the use process of the invention, the first mounting block 5 and the second mounting block 6 are in sealing contact or separated through the lifting mechanism, and the first sintering disk 11 and the second sintering disk 13 are correspondingly in sealing contact or separated and opened.
Other parts of this embodiment are the same as any of embodiments 1 to 3, and thus are not described again.
Example 5:
the utility model provides a preparation low temperature sintering piezoelectric ceramics sintering device, as shown in figure 1, figure 2, includes a plurality of supporting leg 1, fixedly connected with mounting panel 2 between a plurality of supporting leg 1, the inside difference fixed mounting of mounting panel 2 has first power 3 and second power 4, the first installation piece 5 of last fixed surface of supporting leg 1, the top of first installation piece 5 is provided with second installation piece 6, the upper surface of first installation piece 5 contacts with the lower surface of second installation piece 6.
Preferably, the two end surfaces of the first mounting block 5 and the second mounting block 6 are respectively and fixedly connected with a supporting block 8, wherein mounting ports 9 are formed in the upper surfaces of two supporting blocks 8 of the first mounting block 5, hydraulic cylinders 10 are fixedly mounted on the inner walls of the two mounting ports 9, and the hydraulic cylinders 10 are fixedly connected with the lower surfaces of the supporting blocks 8 of the second mounting block 6 through hydraulic rods.
Preferably, as shown in fig. 2, the inner walls of both ends of the first mounting block 5 are fixedly connected with connecting rods 7, and the surfaces of the opposite ends of the two connecting rods 7 are fixedly connected with first sintering disks 11; the inner surface of the second mounting block 6 is fixedly connected with a support rod 12, and the lower surface of the support rod 12 is fixedly connected with a second sintering disc 13. The upper surface of the first sintering disc 11 is in contact with the lower surface of the second sintering disc 13, and the structure formed by the first mounting block 5 and the second mounting block 6 and the structure formed by the first sintering disc 11 and the second sintering disc 13 are both hollow cylinders.
Preferably, as shown in fig. 4 and 5, the inner walls of the first sintering tray 11 and the second sintering tray 13 are respectively provided with a first placing groove 15 and a second placing groove 16, the inner walls of both ends of the first placing groove 15 and the second placing groove 16 are respectively provided with a first conductive silica gel 17, the inner walls of the middle ends of the first placing groove 15 and the second placing groove 16 are respectively provided with a chromium-nickel conductive wire 18, the chromium-nickel conductive wires 18 are electrically connected through the first conductive silica gel 17, and both ends of the chromium-nickel conductive wire 18 are respectively electrically connected with the positive electrode electrical connection end and the negative electrode electrical connection end of the first power supply 3.
Preferably, as shown in fig. 3 and 5, the inner surfaces of the first mounting block 5 and the second mounting block 6 are both provided with an electric heating plate 14, the inner walls of the first mounting block 5 and the second mounting block 6 are both provided with a communication port 19, the inner wall of the middle part of each of the two communication ports 19 is provided with an electric wire 20, the inner walls of the two ends of each of the two communication ports 19 are both fixedly connected with a second conductive silica gel 21, the two electric wires 20 of the second mounting block 6 are electrically connected through the second conductive silica gel 21, and one end of each of the two electric wires 20 is respectively electrically connected with the positive electrode electric connection end and the negative electrode electric connection end of the second power source 4; the electric wires 20 are electrically connected to the plurality of electric heating plates 14, respectively. According to the invention, by arranging the electric heating plates 14, the effect of controlling the plurality of electric heating plates 14 to heat the cavity between the first mounting block 5 and the second mounting block 6 through the second power supply 4 so as to uniformly sinter the blank is achieved, so that the problem that the cavity between the first mounting block 5 and the second mounting block 6 cannot be uniformly heated due to the distribution of the existing heating elements is solved.
When the device is used, a blank subjected to plastic discharging is placed in the first sintering disc 11, the hydraulic cylinder 10 is controlled to be started, the second mounting block 6 and the second sintering disc 13 are driven to move downwards, the second mounting block 6 is enabled to be in contact with the first mounting block 5, and the second sintering disc 13 is enabled to be in contact with the first sintering disc 11 until a sealing state is formed between the first mounting block 5 and the second mounting block 6 and between the first sintering disc 11 and the second sintering disc 13. The chrome-nickel conductive wires 18 in the first sintering disc 11 and the chrome-nickel conductive wires 18 in the second sintering disc 13 are electrified through the first conductive silica gel 17. The electric wires 20 in the first mounting block 5 and the electric wires 20 in the second mounting block 6 are electrified through the second conductive silicone rubber 21. The chromium-nickel conductive wire 18 is powered by controlling the first power supply 3, so that an electric field is generated around the first sintering disc 11 and the second sintering disc 13; the second power supply 4 controls a plurality of electric heating plates 14 to uniformly heat the cavity between the first mounting block 5 and the second mounting block 6.
According to the invention, by arranging the chromium-nickel conductive wire 18, the effect that the first power supply 3 is controlled to supply power to the chromium-nickel conductive wire 18, so that an electric field is generated around the first sintering disc 11 and the second sintering disc 13, the temperature required by sintering and the time required by sintering are reduced under the influence of the electric field is achieved, and the chromium-nickel conductive wire has better practicability.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (7)
1. The sintering device for preparing the low-temperature sintered piezoelectric ceramics is characterized by comprising a first power supply (3), a second power supply (4), a first mounting block (5) and a second mounting block (6), wherein the first mounting block (5) and the second mounting block (6) are sequentially arranged from bottom to top, and the first mounting block (5) is connected with the second mounting block (6) through a lifting mechanism; the first mounting block (5) and the second mounting block (6) are respectively provided with a plurality of electric heating plates (14) which are electrically connected with a second power supply (4) along the inner wall, the first mounting block (5) and the second mounting block (6) are respectively and correspondingly provided with a first sintering disc (11) and a second sintering disc (13) inside, and the first sintering disc (11) and the second sintering disc (13) form a sintering cavity; the inner walls of the first sintering disc (11) and the second sintering disc (13) are respectively provided with a plurality of first placing grooves (15) and a plurality of second placing grooves (16) along arc-shaped correspondence, the two ends of the first placing grooves (15) and the two ends of the second placing grooves (16) are respectively provided with first conductive silica gel (17) in a corresponding manner, the inner walls of the middle parts of the first placing grooves (15) and the second placing grooves (16) are respectively provided with chromium-nickel conductive wires (18), the chromium-nickel conductive wires (18) are electrically connected through the first conductive silica gel (17), and the chromium-nickel conductive wires (18) of the first sintering disc (11) and the second sintering disc (13) are respectively electrically connected with the positive electrode electric connection end and the negative electrode electric connection end of the first power source (3).
2. The sintering device for preparing low-temperature sintered piezoelectric ceramics according to claim 1, wherein the chromium-nickel conductive wires (18) of the first sintering disc (11) and the second sintering disc (13) respectively penetrate through the first mounting block (5) and are electrically connected with the positive electrical connection end and the negative electrical connection end of the first power supply (3).
3. The sintering device for preparing the low-temperature sintered piezoelectric ceramics according to claim 1, wherein the first mounting block (5) and the second mounting block (6) are respectively provided with a communication port (19) along an arc shape, and two ends of the communication ports (19) of the first mounting block (5) and the second mounting block (6) are respectively provided with second conductive silica gel (21) correspondingly; an electric wire (20) is arranged in a communication port (19) of the second mounting block (6), two electric wires (20) are arranged in a communication port (19) of the first mounting block (5), and the two electric wires are respectively and electrically connected with a positive electrode electric connection end and a negative electrode electric connection end of the second power supply (4); the electric wires (20) are electrically connected through second conductive silica gel (21), and the electric wires (20) are respectively electrically connected with the electric heating plates (14).
4. The sintering device for preparing low-temperature sintered piezoelectric ceramics according to claim 3, wherein two wires (20) in the communication port (19) of the first mounting block (5) respectively pass through the first mounting block (5) and are connected with the second power supply (4).
5. The sintering device for preparing low-temperature sintered piezoelectric ceramics according to any one of claims 1 to 4, wherein two ends of the inside of the first mounting block (5) are respectively and fixedly provided with a connecting rod (7), and a first sintering disc (11) is fixedly arranged between the adjacent connecting rods (7); the inside of second installation piece (6) is provided with bracing piece (12), the bottom of bracing piece (12) corresponds first fritting dish (11) and is fixed to be provided with second fritting dish (13).
6. The sintering device for preparing low-temperature sintered piezoelectric ceramics according to claim 1, wherein the lifting mechanism comprises supporting blocks (8) and a hydraulic driving device, the supporting blocks (8) are respectively arranged at the ends of the first mounting block (5) and the second mounting block (6) on the same side, and the hydraulic driving device is arranged between the adjacent supporting blocks (8).
7. The sintering device for preparing low-temperature sintered piezoelectric ceramics according to claim 6, wherein the two sides of the first mounting block (5) are respectively provided with a lifting mechanism.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110898211.1A CN113566559B (en) | 2021-08-05 | 2021-08-05 | Sintering device for preparing low-temperature sintered piezoelectric ceramics |
| PCT/CN2021/140603 WO2023010769A1 (en) | 2021-08-05 | 2021-12-22 | Sintering device for use in preparation of low-temperature sintered piezoelectric ceramics |
| DE212021000215.3U DE212021000215U1 (en) | 2021-08-05 | 2021-12-22 | Sintering device for the production of low-temperature sintered piezoceramics |
| LU501415A LU501415B1 (en) | 2021-08-05 | 2021-12-22 | Sintering device for preparing low-temperature sintered piezoelectric ceramics |
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| WO2023010769A1 (en) * | 2021-08-05 | 2023-02-09 | 成都凯天电子股份有限公司 | Sintering device for use in preparation of low-temperature sintered piezoelectric ceramics |
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| WO2023010769A1 (en) | 2023-02-09 |
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