CN112125678A - Production method of silicon nitride ceramic ball - Google Patents
Production method of silicon nitride ceramic ball Download PDFInfo
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- CN112125678A CN112125678A CN202010994942.1A CN202010994942A CN112125678A CN 112125678 A CN112125678 A CN 112125678A CN 202010994942 A CN202010994942 A CN 202010994942A CN 112125678 A CN112125678 A CN 112125678A
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- 229910052581 Si3N4 Inorganic materials 0.000 title claims abstract description 168
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 title claims abstract description 168
- 239000000919 ceramic Substances 0.000 title claims abstract description 63
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000002245 particle Substances 0.000 claims abstract description 70
- 238000000227 grinding Methods 0.000 claims abstract description 66
- 238000001816 cooling Methods 0.000 claims abstract description 39
- 238000001035 drying Methods 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000004140 cleaning Methods 0.000 claims abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 244000137852 Petrea volubilis Species 0.000 claims abstract description 15
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 238000009694 cold isostatic pressing Methods 0.000 claims abstract description 8
- 238000005245 sintering Methods 0.000 claims abstract description 8
- 238000007517 polishing process Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 58
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 229920000742 Cotton Polymers 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 9
- 239000002351 wastewater Substances 0.000 claims description 9
- 238000005498 polishing Methods 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000008187 granular material Substances 0.000 description 27
- 238000000746 purification Methods 0.000 description 15
- 238000005406 washing Methods 0.000 description 8
- 239000000843 powder Substances 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 230000003749 cleanliness Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
- C04B35/584—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
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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
- B24B11/00—Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor
- B24B11/02—Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor for grinding balls
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- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
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- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
- C04B35/62655—Drying, e.g. freeze-drying, spray-drying, microwave or supercritical drying
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Abstract
The application relates to a production method of a silicon nitride ceramic ball, which comprises the following steps: s1, grinding and filtering the silicon nitride, and granulating the filtered silicon nitride; s2, cleaning and drying the granulated silicon nitride particles; s3, putting the dried silicon nitride particles into a mould for pressing, and carrying out cold isostatic pressing; s4, sintering the formed silicon nitride ceramic balls; s5, cooling the sintered silicon nitride ceramic balls; s6, the silicon nitride ceramic balls after cooling are ground and polished, the grinding and polishing process comprises a coarse grinding process, a fine grinding process and a super-fine grinding process, wherein a micron-sized grinding disc or sand paper is adopted in the coarse grinding process, a submicron-sized grinding disc or sand paper is adopted in the fine grinding process, and a nanoscale grinding disc or sand paper is adopted in the super-fine grinding process.
Description
Technical Field
The application relates to the technical field of silicon nitride ceramic balls, in particular to a production method of a silicon nitride ceramic ball.
Background
The silicon nitride ceramic ball is a precise ceramic sintered at high temperature in a non-oxidizing atmosphere, has high strength, high wear resistance, high temperature resistance, corrosion resistance, acid and alkali resistance, can be used in seawater for a long time, and has good performance of electricity insulation and magnetism insulation; the self-lubricating ball has self-lubricating property, can be used in the environment without lubricating medium and high pollution, and becomes a preferred ball of a ceramic bearing and a mixed ceramic ball bearing.
The existing production method of the silicon nitride ceramic ball comprises the following steps: firstly, the silicon nitride powder is pressed and formed, and then sintering and grinding are carried out.
In view of the above-mentioned related art, the inventors consider that there is a defect that the efficiency of forming the silicon nitride ceramic balls in the pressing process is low.
Disclosure of Invention
In order to overcome the defect that the forming efficiency of the silicon nitride ceramic ball is low in the pressing process, the application provides a production method of the silicon nitride ceramic ball.
The production method of the silicon nitride ceramic ball adopts the following technical scheme:
a production method of silicon nitride ceramic balls comprises the following steps:
s1, grinding and filtering the silicon nitride, and granulating the filtered silicon nitride;
s2, cleaning and drying the granulated silicon nitride particles;
s3, putting the dried silicon nitride particles into a mould for pressing, and carrying out cold isostatic pressing;
s4, sintering the formed silicon nitride ceramic balls;
s5, cooling the sintered silicon nitride ceramic balls;
and S6, grinding and polishing the silicon nitride ceramic balls after cooling, wherein the grinding and polishing process comprises a coarse grinding process, a fine grinding process and a super-fine grinding process, wherein the coarse grinding process adopts a micron-sized grinding disc or sand paper, the fine grinding process adopts a submicron-sized grinding disc or sand paper, and the super-fine grinding process adopts a nanoscale grinding disc or sand paper.
By adopting the technical scheme, the silicon nitride finished product is ground to enable the silicon nitride finished product to be filtered, so that the silicon nitride finished product which does not meet the requirement of the grinding particle size is ground again to enable the granulated silicon nitride particles to be more uniform, the granulated silicon nitride particles are cleaned to ensure that the forming degree of the subsequent silicon nitride particles is higher when being pressed, the silicon nitride particles are dried after the cleaning is finished, the cleanliness and the dryness and the humidity of the silicon nitride particles are ensured well, the forming degree of the silicon nitride particles when being pressed is further improved to improve the pressing efficiency of the silicon nitride particles, the silicon nitride particles are put into a mould to be pressed and are subjected to cold isostatic pressing, the silicon nitride ceramic balls after being pressed and formed are sintered, the requirements of the forming degree, the hardness and the like of the silicon nitride ceramic balls are further improved, and the silicon nitride ceramic balls are ground and polished after the sintering is finished, the silicon nitride ceramic ball is cooled before grinding and polishing, compared with the existing natural cooling, the production efficiency of the silicon nitride ceramic ball is further improved, and the silicon nitride ceramic ball is polished by coarse grinding, fine grinding and ultra-fine grinding in sequence, so that the production and manufacturing of the silicon nitride ceramic ball can be completed, the pressing efficiency of silicon nitride particles is improved, and the quality of the final finished product of the silicon nitride ceramic ball is greatly improved.
Optionally, in step S2, after the silicon nitride particles are cleaned, the silicon nitride particles are dried by the drying box, and the drying box is provided with a scattering mechanism for scattering the silicon nitride particles.
Through adopting above-mentioned technical scheme, after finishing washing the silicon nitride granule, when drying the silicon nitride granule in the stoving case, break up the silicon nitride granule that bonds together, can guarantee that the quality of silicon nitride granule is good to make the drying efficiency of silicon nitride granule higher, and then improved the pressing efficiency of silicon nitride granule.
Optionally, the stoving case includes the box and articulates the chamber door in box one side, and the bottom has set firmly the heating pipe in the box, breaks up the mechanism and includes first motor and rotary drum, and the rotary drum inner wall has set firmly a plurality of rods of breaing up, and first motor sets firmly the outer wall that is adjacent to the chamber door at the box, and the rotary drum rotates to be connected inside the box, and the output shaft of first motor stretches into in the box and is fixed with rotary drum one end, and the circumference lateral wall of rotary drum is equipped with the material door, is equipped with the mounting that is used for dismouting material door between material door and the.
Through adopting above-mentioned technical scheme, open chamber door and material door and pour silicon nitride granule into the rotary drum in, fix the material door on the rotary drum through the mounting, close the chamber door, even the electricity makes its intensification with the heating pipe, start first motor and make the rotary drum rotate, silicon nitride granule is continuous roll in the rotary drum, break up the stick simultaneously and follow the rotary drum and rotate, break up the silicon nitride granule that the adhesion is in the same place, the high temperature that the heating pipe produced passes through the rotary drum direct transfer and gives the silicon nitride granule, the break up and drying efficiency of silicon nitride granule has been improved greatly.
Optionally, the lateral wall that the box deviates from first motor has set firmly the second motor, and the output shaft of second motor stretches into the box and fixedly connected with pivot, and the pivot stretches into in the rotary drum and rotates with the rotary drum to be connected, the axis collineation of pivot and rotary drum, the circumference lateral wall fixedly connected with of pivot a plurality of with break up the stick crisscross distribution of stick and stir and scatter the stick.
Through adopting above-mentioned technical scheme, start the second motor when starting first motor, the pivot is rotated in the inside orientation of rotary drum in the direction of rotary drum on the contrary for stir and break up the stick rotation that interlocks each other and break up the silicon nitride particle evenly, further improvement the drying efficiency of silicon nitride particle.
Optionally, break up the stick and be cylindricly with stirring the stick, and break up the stick and keep away from the one end of rotary drum inner wall and be the radius angle structure, stir the stick and keep away from the one end of pivot and be the radius angle structure.
Through adopting above-mentioned technical scheme, cylindric and fillet structure's setting can effectively reduce the silicon nitride granule and broken up the stick and stir the probability that the stick crashed, and then has guaranteed the security of silicon nitride granule.
Optionally, the rotary drum includes the heat transfer layer of high thermal conductivity to and the contact layer of aluminum alloy material or titanium alloy material, and the fixed parcel of heat transfer layer is at the contact layer outer wall, and the contact layer inner wall is fixed with the stick of breaing up, and heat transfer layer outer wall fixedly connected with a plurality of enhancement sticks.
Through adopting above-mentioned technical scheme, the high temperature that the heating pipe distributed out transmits for the contact layer through heat transfer layer, high thermal conductivity's heat transfer layer can make the contact layer intensification more even quick, the contact layer of aluminum alloy or titanium alloy material all has the characteristics of light high strength, the reinforcing rod has increaseed the area of contact of rotary drum with the external world, and then inside making the transmission that high temperature can be quick more to the rotary drum, finally make the silicon nitride granule drying efficiency in the rotary drum higher, and then make the suppression efficiency of silicon nitride granule higher.
Optionally, each scattering rod is arranged opposite to the different reinforcing rods, the scattering rods and the reinforcing rods which are arranged opposite to each other are integrally formed to form a disassembling rod, the disassembling rod is connected with the rotary drum in a sliding mode, and a disassembling component is arranged between the disassembling rod and the rotary drum.
Through adopting above-mentioned technical scheme, the stick is broken up in the transmission that can be more quick of the high temperature that the stick was received of enhancement, and then makes the inside intensification efficiency of rotary drum higher, has improved the drying efficiency of silicon nitride granule, still can dismantle the stick through the dismouting subassembly and wash or change.
Optionally, the dismouting subassembly includes paster and dismouting bolt, and the fixed cover of paster is established at the circumference lateral wall of dismantling the stick, and the paster is close to the lateral wall and the laminating of heat transfer layer outer wall of breaking up the stick, and the dismouting bolt runs through paster and heat transfer layer in proper order and with contact layer threaded connection.
Through adopting above-mentioned technical scheme, unscrew the dismouting bolt and can take off paster and dismantlement stick from the rotary drum for break up the washing of stick convenient and fast more.
Optionally, in step S6, the silicon nitride ceramic balls are cleaned again after grinding and polishing, and the water source for cleaning is the wastewater generated by cleaning the silicon nitride particles in step S2 after being filtered and purified by the purification mechanism.
Through adopting above-mentioned technical scheme, the waste water that the washing silicon nitride granule produced in step S2 is through the filtration and the purification of purification mechanism, utilizes the final washing to silicon nitride ceramic ball once more, can reach the effect of water economy resource to silicon nitride ceramic ball final clean degree and pleasing to the eye degree have been improved.
It is optional, purification mechanism includes the purifying box, the inlet tube, outlet pipe and first water pump, the inlet tube intercommunication is on the top of purifying box, the outlet pipe intercommunication is in the bottom of purifying box lateral wall, first water pump intercommunication is on the outlet pipe, purifying box inside has set firmly filter pulp layer and activated carbon layer from top to bottom in proper order, purifying box lateral wall intercommunication has the cooling tube, the intercommunication has the second water pump on the cooling tube, the cooling tube is located the one end that the purifying box was kept away from to the second water pump and extends to stoving incasement top, and be snakelike and coil the back and stretch out the stoving case, finally communicate back to the purifying box lateral wall, the both ends of cooling tube all are located activated carbon layer upper surface with the intercommunication department of purifying box.
Through adopting above-mentioned technical scheme, the waste water that produces in step S2 passes through the inlet tube and gets into the purifying box in, in proper order after the filtration on filtration cotton layer and activated carbon layer, in pumping to the outlet pipe through first water pump, finally carry out the washing of silicon nitride ceramic ball, make to the abluent water of silicon nitride ceramic ball cleaner, need cool down just can take out the silicon nitride granule after inside stoving after stoving case work finishes, close first water pump and open the second water pump this moment, the water that falls on activated carbon layer after filtering cotton layer is direct in the suction cooling tube, and cool down to the stoving incasement, because the high temperature that the heating pipe produced risees, be located the inside low temperature downward transmission of cooling tube of stoving incasement, and then make the cooling efficiency of stoving incasement portion higher, and then improved the suppression efficiency of silicon nitride granule.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the silicon nitride finished product is ground to enable the silicon nitride finished product to be filtered, so that the silicon nitride finished product which does not meet the requirement of grinding particle size is ground again, the silicon nitride particles after granulation are more uniform, the silicon nitride particles after granulation are cleaned, the higher forming degree of the subsequent silicon nitride particles during pressing is ensured, and the silicon nitride particles are dried after cleaning is finished, so that the cleanliness and the humidity of the silicon nitride particles are well ensured, the forming degree of the silicon nitride particles during pressing is further improved, and the pressing efficiency of the silicon nitride particles is improved;
2. the high temperature received by the reinforcing rod can be more quickly transmitted to the scattering rod, so that the temperature rising efficiency in the rotary drum is higher, the drying efficiency of the silicon nitride particles is improved, and the disassembling rod can be disassembled for cleaning or replacing through the disassembling and assembling assembly;
3. waste water that produces in step S2 passes through the inlet tube and gets into the purifying box in, in filtering cotton layer and activated carbon layer' S filtration back in proper order, in pumping to the outlet pipe through first water pump, finally carry out the washing of silicon nitride ceramic ball, close first water pump and open the second water pump, the water that falls on activated carbon layer after filtering cotton layer is direct in the suction cooling tube, and cool down to the stoving incasement, and then make the cooling efficiency of stoving incasement portion higher, and then improved the suppression efficiency of silicon nitride granule.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present application;
FIG. 2 is a partial cross-sectional view showing the break-up mechanism;
FIG. 3 is a schematic view showing the structure of the material gate;
FIG. 4 is a partial cross-sectional view showing the knock-out bar;
fig. 5 is a partial sectional view showing the purge mechanism.
In the figure, 1, a drying box; 11. a box body; 111. heating a tube; 12. a box door; 2. a breaking mechanism; 21. a first motor; 22. a rotating drum; 221. a heat transfer layer; 222. a contact layer; 3. a material gate; 31. a fixing member; 4. a second motor; 41. a rotating shaft; 42. dispersing the rods; 5. disassembling the rod; 51. breaking up the rods; 52. a reinforcing rod; 6. disassembling and assembling the components; 61. pasting a piece; 62. disassembling and assembling the bolt; 7. a purification mechanism; 71. a purification box; 711. a filter cotton layer; 712. an activated carbon layer; 72. a water inlet pipe; 73. a water outlet pipe; 74. a first water pump; 8. a cooling tube; 81. and a second water pump.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses a production method of a silicon nitride ceramic ball.
A production method of silicon nitride ceramic balls comprises the following steps:
and S1, grinding the silicon nitride, filtering, grinding the silicon nitride powder particles which do not meet the requirement of the particle size again until the silicon nitride powder particles all meet the requirement of the particle size so as to ensure that the granulated silicon nitride particles are more uniform, and then granulating the ground silicon nitride powder particles through a granulation tower so as to form the silicon nitride particles.
S2, referring to fig. 1 and 2, cleaning the granulated silicon nitride particles, drying the silicon nitride particles in a drying box 1 after cleaning, where the drying box 1 includes a box body 11 and a box door 12 hinged to one side of the box body 11, a heating pipe 111 is fixedly arranged on an inner bottom wall of the box body 11, a scattering mechanism 2 for containing and scattering the silicon nitride particles is arranged inside the box body 11, the scattering mechanism 2 includes a first motor 21 and a rotating cylinder 22, a plurality of scattering rods 51 are fixedly arranged on an inner wall of the rotating cylinder 22, the first motor 21 is fixedly arranged on an outer wall of the box body 11 adjacent to the box door 12, the rotating cylinder 22 is horizontally and rotatably connected inside the box body 11, and an output shaft of the first motor 21 is fixed to one end of the rotating cylinder 22 and extends into the box body;
referring to fig. 3, a material door 3 is disposed on a circumferential side wall of the rotating drum 22, a fixing member 31 for detaching the material door 3 is disposed between the material door 3 and the rotating drum 22, in this embodiment, the fixing member 31 is a bolt, and a vent hole with a diameter smaller than that of silicon nitride particles can be formed on the side wall of the rotating drum 22 according to actual conditions; open chamber door 12 and material door 3, pour the silicon nitride granule after finishing washing into rotary drum 22 in, close material door 3 through mounting 31, and close chamber door 12, make its intensification with heating pipe 111 even electricity, high temperature transmits the silicon nitride granule for inside through rotary drum 22, the silicon nitride granule rolls and is broken up stick 51 in rotary drum 22, silicon nitride's drying efficiency has been improved greatly, and then efficiency and shaping effect when having guaranteed the silicon nitride granule and having suppressed.
Referring to FIG. 4, the drum 22 includes a heat transfer layer 221 with high thermal conductivity and a contact layer 222 made of aluminum alloy or titanium alloy, in this embodiment, the heat transfer layer 221 is made of copper or aluminum, the heat transfer layer 221 is fixedly wrapped on the outer wall of the contact layer 222, and the scattering rods 51 are fixed on the inner wall of the contact layer 222; the heat transfer layer 221 with high thermal conductivity can more fully and uniformly transfer the high temperature emitted by the heating pipe 111 to the contact layer 222, and the contact layer 222 can more efficiently dry the silicon nitride particles, so that the heat utilization rate and the drying efficiency of the silicon nitride particles are improved.
Referring to fig. 2, a second motor 4 is fixedly arranged on the outer wall of the box 11 away from the first motor 21, an output shaft of the second motor 4 extends into the box 11 and is fixedly connected with a rotating shaft 41, the axis of the rotating shaft 41 is collinear with the axis of the rotating drum 22, the rotating shaft 41 is located inside the rotating drum 22 and is rotatably connected with the rotating drum 22, a plurality of scattering rods 42 which are staggered with scattering rods 51 are fixedly connected to the circumferential side wall of the rotating shaft 41, the scattering rods 42 and the scattering rods 51 are cylindrical, and the ends of the scattering rods 42 and the scattering rods 51 are both rounded corners; the second motor 4 is opened when the first motor 21 is started, the rotary drum 22 and the rotary shaft 41 rotate oppositely, so that the silicon nitride particles are uniformly scattered by the mutually staggered rotation of the scattering rods 42 and the scattering rods 51, the probability that the silicon nitride particles are smashed by the scattering rods 51 and the scattering rods 42 is effectively reduced, and finally the drying efficiency of the silicon nitride particles is greatly improved.
Referring to fig. 2 and 4, each scattering rod 51 is respectively arranged opposite to different reinforcing rods 52, the opposite scattering rods 51 and reinforcing rods 52 are integrally formed and form a detaching rod 5, the detaching rod 5 is connected with the rotary drum 22 in a sliding manner, a detaching assembly 6 for fixing the detaching rod 5 on the rotary drum 22 is arranged between the detaching rod 5 and the rotary drum 22, the detaching assembly 6 comprises a patch 61 and a detaching bolt 62, the patch 61 is fixedly sleeved on the circumferential outer side wall of the detaching rod 5, the side wall of the patch 61 close to the axis of the rotary drum 22 is attached to the outer wall of the heat transfer layer 221, and the detaching bolt 62 sequentially penetrates through the patch 61 and the heat transfer layer 221 and then is connected in the contact layer 222 in a threaded manner; integrated into one piece's reinforcing rod 52 and break up stick 51 and use the material the same, and then make the high temperature that reinforcing rod 52 received can directly transmit for the silicon nitride granule through breaking up stick 51, still can be through unscrewing dismouting bolt 62, will dismantle stick 5 and take out from rotary drum 22, make the washing of breaking up stick 51 very convenient, final further improvement the drying efficiency of silicon nitride, and then improved the press forming efficiency of silicon nitride granule.
And S3, putting the dried silicon nitride particles into a die for pressing, and carrying out cold isostatic pressing.
S4, sintering the silicon nitride ceramic balls formed after the cold isostatic pressing is finished;
s5, cooling the sintered silicon nitride ceramic ball by air cooling or water cooling;
and S6, referring to FIG. 5, grinding and polishing the silicon nitride ceramic balls after cooling, wherein the grinding and polishing process comprises a coarse grinding process adopting a micron-sized grinding disc or sand paper, a fine grinding process adopting a submicron-sized grinding disc or sand paper and a super-fine grinding process adopting a nano-sized grinding disc or sand paper, and after the final super-fine grinding process is completed, the silicon nitride ceramic balls are cleaned, and the water source for cleaning is waste water generated by cleaning the silicon nitride particles in the step S2 after filtering and purifying by the purifying mechanism 7.
Referring to fig. 5, the purification mechanism 7 includes a purification box 71, a water inlet pipe 72, a water outlet pipe 73 and a first water pump 74, the water inlet pipe 72 is communicated with the top end of the purification box 71, the water outlet pipe 73 is communicated with the bottom end of the outer side wall of the purification box 71, the first water pump 74 is communicated with the water outlet pipe 73, a filter cotton layer 711 and an activated carbon layer 712 are sequentially and fixedly arranged in the purification box 71 from top to bottom, wherein the activated carbon layer 712 is obliquely arranged, the side wall of the purification box 71 is communicated with a cooling pipe 8, the cooling pipe 8 is communicated with a second water pump 81, the cooling pipe 8 is located at one end of the second water pump 81 far away from the purification box 71 and extends to the top inside the drying box 1 and extends out of the drying box 1 to be communicated with the side wall of the purification box 71 after being coiled in a serpentine shape, and the communication positions of.
The wastewater cleaned with the silicon nitride particles in the step S2 enters the purifying box 71 through the water inlet pipe 72, is sequentially filtered by the filter cotton layer 711 and the activated carbon layer 712, and is pumped into the water outlet pipe 73 through the first water pump 74, so that the silicon nitride ceramic balls are finally cleaned, and the wastewater can be used in the water cooling part in the step S5 according to actual conditions; when drying case 1 work finishes cooling, close first water pump 74 and open second water pump 81, fall in the direct suction cooling tube 8 of water on activated carbon layer 712 behind filtering cotton layer 711, and cool down in drying case 1, because the high temperature that heating pipe 111 produced risees, be located the inside low temperature downward transmission of cooling tube 8 of drying case 1, and then make the inside cooling efficiency of drying case 1 higher, and then improved the suppression efficiency of silicon nitride granule.
The production method of the silicon nitride ceramic ball in the embodiment of the application has the implementation principle that: firstly, grinding silicon nitride, then filtering, grinding the silicon nitride powder particles which do not meet the requirement of the particle size again until the silicon nitride powder particles completely meet the requirement of the particle size, and then granulating the ground silicon nitride powder particles through a granulation tower to form silicon nitride particles;
cleaning the granulated silicon nitride particles, drying the silicon nitride particles in a drying box 1 after cleaning, opening a box door 12 and a material door 3, pouring the cleaned silicon nitride particles into a rotary drum 22, closing the material door 3 through a fixing piece 31, closing the box door 12, connecting a heating pipe 111 with electricity to heat the silicon nitride particles, starting a first motor 21 and a second motor 4, and rotating the rotary drum 22 and a rotating shaft 41 oppositely to ensure that the silicon nitride particles are uniformly scattered by the rotation of the stirring rods 42 and the scattering rods 51 which are staggered with each other, and transmitting high temperature to the silicon nitride particles inside through the rotary drum 22, so that the drying efficiency of the silicon nitride particles is improved, and the efficiency and the forming effect of the silicon nitride particles during pressing are further ensured;
the waste water after cleaning the silicon nitride particles enters the purifying box 71 through the water inlet pipe 72, is filtered to the bottom of the purifying box 71 through the filtering cotton layer 711 and the activated carbon layer 712 in sequence, when the drying box 1 is cooled after working, the box door 12 is opened, the first water pump 74 is closed, the second water pump 81 is opened, the water falling on the activated carbon layer 712 after passing through the filtering cotton layer 711 is directly pumped into the cooling pipe 8 and is cooled in the drying box 1, and finally the material door 3 is opened to take out the dried silicon nitride particles for pressing and cold isostatic pressing;
sintering the silicon nitride ceramic balls formed after the cold isostatic pressing is finished; cooling the sintered silicon nitride ceramic ball by air cooling or water cooling; and (3) grinding and polishing the silicon nitride ceramic balls after cooling is finished, wherein the grinding and polishing process comprises a coarse grinding process adopting a micron-sized grinding disc or sand paper, a fine grinding process adopting a submicron-sized grinding disc or sand paper and an ultra-precision grinding process adopting a nanoscale grinding disc or sand paper, and after the final ultra-precision grinding process is finished, the silicon nitride ceramic balls are cleaned, the water source for cleaning the silicon nitride ceramic balls comes from the purified water pumped from the first water pump 74 from the purification box 71, and the water in the water outlet pipe 73 can be used in the water cooling process of the silicon nitride ceramic balls after sintering is finished according to actual conditions.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A production method of silicon nitride ceramic balls comprises the following steps:
s1, grinding and filtering the silicon nitride, and granulating the filtered silicon nitride;
s2, cleaning and drying the granulated silicon nitride particles;
s3, putting the dried silicon nitride particles into a mould for pressing, and carrying out cold isostatic pressing;
s4, sintering the formed silicon nitride ceramic balls;
s5, cooling the sintered silicon nitride ceramic balls;
and S6, grinding and polishing the silicon nitride ceramic balls after cooling, wherein the grinding and polishing process comprises a coarse grinding process, a fine grinding process and a super-fine grinding process, wherein the coarse grinding process adopts a micron-sized grinding disc or sand paper, the fine grinding process adopts a submicron-sized grinding disc or sand paper, and the super-fine grinding process adopts a nanoscale grinding disc or sand paper.
2. The method for producing silicon nitride ceramic balls according to claim 1, wherein: in step S2, after the silicon nitride particles are cleaned, the silicon nitride particles are dried by the drying box (1), and the drying box (1) is provided with a scattering mechanism (2) for scattering the silicon nitride particles.
3. The method for producing silicon nitride ceramic balls according to claim 2, wherein: drying box (1) includes box (11) and articulates door (12) in box (11) one side, bottom has set firmly heating pipe (111) in box (11), break up mechanism (2) including first motor (21) and rotary drum (22), rotary drum (22) inner wall has set firmly a plurality of scattering stick (51), first motor (21) set firmly the outer wall that is adjacent in box (11) door (12), rotary drum (22) rotate to be connected inside box (11), the output shaft of first motor (21) stretches into in box (11) and is fixed with rotary drum (22) one end, the circumference lateral wall of rotary drum (22) is equipped with material door (3), be equipped with between material door (3) and rotary drum (22) and be used for dismouting material door (3) mounting (31).
4. The method for producing silicon nitride ceramic balls according to claim 3, wherein: the lateral wall that box (11) deviates from first motor (21) has set firmly second motor (4), and the output shaft of second motor (4) stretches into in box (11) and fixedly connected with pivot (41), and pivot (41) stretch into in rotary drum (22) and rotate with rotary drum (22) and be connected, and pivot (41) and the axis collineation of rotary drum (22), the circumference lateral wall fixedly connected with of pivot (41) a plurality of with break up stick (51) crisscross distribution stir stick (42) that scatter.
5. The method for producing silicon nitride ceramic balls according to claim 4, wherein: the scattering rod (51) and the stirring rod (42) are both cylindrical, one end of the scattering rod (51) far away from the inner wall of the rotary drum (22) is of a fillet structure, and one end of the stirring rod (42) far away from the rotary shaft (41) is of a fillet structure.
6. The method for producing silicon nitride ceramic balls according to claim 3, wherein: the rotary drum (22) comprises a heat transfer layer (221) with high heat conductivity and a contact layer (222) made of an aluminum alloy material or a titanium alloy material, the heat transfer layer (221) is fixedly wrapped on the outer wall of the contact layer (222), the inner wall of the contact layer (222) is fixed with the scattering rods (51), and the outer wall of the heat transfer layer (221) is fixedly connected with a plurality of reinforcing rods (52).
7. The method for producing silicon nitride ceramic balls according to claim 6, wherein: every break up stick (51) and different reinforcing rod (52) just to setting up respectively, and just break up stick (51) and reinforcing rod (52) integrated into one piece and form dismantlement stick (5) to the setting, dismantle stick (5) and rotary drum (22) and slide and be connected, dismantle and be equipped with dismouting subassembly (6) between stick (5) and rotary drum (22).
8. The method for producing silicon nitride ceramic balls according to claim 7, wherein: dismouting subassembly (6) include paster (61) and dismouting bolt (62), and the fixed cover of paster (61) is established at the circumference lateral wall of dismantling stick (5), and paster (61) are close to the lateral wall and the laminating of heat transfer layer (221) outer wall of breaking up stick (51), and dismouting bolt (62) run through paster (61) and heat transfer layer (221) in proper order and with contact layer (222) threaded connection.
9. The method for producing silicon nitride ceramic balls according to claim 2, wherein: in step S6, the silicon nitride ceramic balls are cleaned again after grinding and polishing, and the water source for cleaning is from the waste water generated by cleaning the silicon nitride particles in step S2 after filtering and cleaning by the cleaning mechanism (7).
10. The method for producing silicon nitride ceramic balls according to claim 9, wherein: the purifying mechanism (7) comprises a purifying box (71), a water inlet pipe (72), a water outlet pipe (73) and a first water pump (74), the water inlet pipe (72) is communicated with the top end of the purifying box (71), the water outlet pipe (73) is communicated with the bottom end of the side wall of the purifying box (71), the first water pump (74) is communicated with the water outlet pipe (73), a filter cotton layer (711) and an active carbon layer (712) are fixedly arranged in the purifying box (71) from top to bottom in sequence, the side wall of the purifying box (71) is communicated with a cooling pipe (8), the cooling pipe (8) is communicated with a second water pump (81), one end, far away from the purifying box (71), of the cooling pipe (8) is positioned on the second water pump (81) and extends to the top in the drying box (, and the coiled coil extends out of the drying box (1) and is finally communicated back to the side wall of the purifying box (71), and the communication positions of the two ends of the cooling pipe (8) and the purifying box (71) are both positioned on the upper surface of the activated carbon layer (712).
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011833A (en) * | 2012-11-28 | 2013-04-03 | 大连大友高技术陶瓷有限公司 | Production process of silicon nitride ceramic ball bearing rolling element |
| WO2018119983A1 (en) * | 2016-12-30 | 2018-07-05 | 深圳市玖创科技有限公司 | Integrated apparatus for pulverizing, stirring and drying electrode materials of hydrogen storage cell |
| CN208205627U (en) * | 2017-09-19 | 2018-12-07 | 皖西学院 | A kind of chemical industry powder raw material drying device |
| CN210197973U (en) * | 2019-05-13 | 2020-03-27 | 福建追随者实业有限公司 | Powder drying belt dispersing equipment |
| CN210332841U (en) * | 2019-06-26 | 2020-04-17 | 郑州登峰熔料有限公司 | Cement filter equipment |
| CN210892590U (en) * | 2019-10-31 | 2020-06-30 | 姜学珍 | Animal waste multistage drying and purifying device |
| CN211303305U (en) * | 2019-08-23 | 2020-08-21 | 上海风荣机电设备有限公司 | Rubbing crusher with thermal-insulated stoving function |
-
2020
- 2020-09-21 CN CN202010994942.1A patent/CN112125678A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011833A (en) * | 2012-11-28 | 2013-04-03 | 大连大友高技术陶瓷有限公司 | Production process of silicon nitride ceramic ball bearing rolling element |
| WO2018119983A1 (en) * | 2016-12-30 | 2018-07-05 | 深圳市玖创科技有限公司 | Integrated apparatus for pulverizing, stirring and drying electrode materials of hydrogen storage cell |
| CN208205627U (en) * | 2017-09-19 | 2018-12-07 | 皖西学院 | A kind of chemical industry powder raw material drying device |
| CN210197973U (en) * | 2019-05-13 | 2020-03-27 | 福建追随者实业有限公司 | Powder drying belt dispersing equipment |
| CN210332841U (en) * | 2019-06-26 | 2020-04-17 | 郑州登峰熔料有限公司 | Cement filter equipment |
| CN211303305U (en) * | 2019-08-23 | 2020-08-21 | 上海风荣机电设备有限公司 | Rubbing crusher with thermal-insulated stoving function |
| CN210892590U (en) * | 2019-10-31 | 2020-06-30 | 姜学珍 | Animal waste multistage drying and purifying device |
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