CN117183060A - Production device of silicon carbide lining cylinder of sand mill and application method of production device - Google Patents
Production device of silicon carbide lining cylinder of sand mill and application method of production device Download PDFInfo
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- CN117183060A CN117183060A CN202311155132.7A CN202311155132A CN117183060A CN 117183060 A CN117183060 A CN 117183060A CN 202311155132 A CN202311155132 A CN 202311155132A CN 117183060 A CN117183060 A CN 117183060A
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 75
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 44
- 239000004576 sand Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005245 sintering Methods 0.000 claims abstract description 141
- 238000000429 assembly Methods 0.000 claims abstract description 18
- 230000000712 assembly Effects 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims description 118
- 238000001816 cooling Methods 0.000 claims description 92
- 230000007246 mechanism Effects 0.000 claims description 40
- 238000003825 pressing Methods 0.000 claims description 36
- 239000000843 powder Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000110 cooling liquid Substances 0.000 claims description 6
- 238000010304 firing Methods 0.000 claims description 6
- 239000011229 interlayer Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 3
- 230000008093 supporting effect Effects 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000012797 qualification Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000001976 improved effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The application discloses a production device of a sand mill silicon carbide lining cylinder and a use method thereof, belonging to the technical field of sand mill silicon carbide lining production equipment; the silicon carbide lining mounting cylinder comprises i sections of assemblies, wherein the i sections of assemblies are fired in the i sintering machines in one-to-one correspondence. The device increases the single-time manufacturing qualification rate of the silicon carbide lining cylinder body of the sand mill by dividing the silicon carbide lining cylinder body of the sand mill into a plurality of sections of manufacturing means, adopts a plurality of small machines to have lower cost than a single large machine, and ensures economic benefit under the condition of lightening the burden of the machines.
Description
Technical Field
The application relates to the technical field of sand mill silicon carbide lining production equipment, in particular to a production device of a sand mill silicon carbide lining cylinder and a use method thereof.
Background
Silicon carbide is an important wide-bandgap semiconductor material, and is widely applied to the power electronic fields of high frequency, high efficiency, high voltage resistance, high temperature resistance, radiation resistance and the like due to the characteristics of large bandgap width, high thermal conductivity, high breakdown electric field, high chemical stability and high electron saturation migration rate, and is also one of the base materials of the fifth generation mobile communication. The silicon carbide ceramic cylinder is mainly applied to a sand mill and used as a lining of the sand mill, has the characteristics of small density, light weight, high hardness and the like, and can greatly prolong the service life of equipment. In the manufacture of lithium battery anode materials, silicon carbide ceramic materials are wear-resistant materials with better and balanced performance at present.
The silicon carbide lining cylinder of the sand mill is used as a material with good properties and applied to sand mills of various types, and for some larger sand mills, the silicon carbide lining cylinder of the sand mill with larger caliber is needed, in the prior art, the silicon carbide lining cylinder of the sand mill is generally manufactured by integral molding, but the silicon carbide material produced in the way is easy to crack and damage, special treatment is needed, the production difficulty and cost are increased, and in the use process, the replacement cost is high, and the operation detail of the sand mill is also needed to be paid attention to so as to avoid the damage to the silicon carbide lining cylinder.
In view of the above, the application provides a production device of a silicon carbide lining cylinder of a sand mill and a use method thereof.
Disclosure of Invention
In order to overcome the defects in the prior art, the application provides a production device of a silicon carbide lining cylinder of a sand mill and a use method thereof.
In order to achieve the above purpose, the present application provides the following technical solutions: the production device of the silicon carbide lining cylinder body of the sand mill comprises i sintering machines, wherein i is an integer larger than 1, the i sintering machines are sequentially arranged, the silicon carbide lining mounting cylinder comprises i sections of assemblies, the i sections of assemblies are fired in the i sintering machines in one-to-one correspondence, and the i sections of assemblies are fired in the i sintering machines in one-to-one correspondence; the sintering machine comprises a sintering cylinder, a pressing die, an ejection mechanism and a lifting mechanism, wherein the cylinder wall of the sintering cylinder is provided with an interlayer, and a heating inductor is arranged in the interlayer; the pressing die is arranged above the sintering cylinder, and after entering the sintering cylinder, the pressing die extrudes silicon carbide powder in the sintering cylinder into an assembly to be fired; the lifting mechanism is fixedly arranged above the sintering cylinder and used for driving the pressing die to move up and down; the ejection mechanism is contacted with the bottom surface of the assembly body, and the output end of the ejection mechanism drives the assembly body to move upwards and is used for ejecting the fired assembly body into the sintering cylinder.
Further, the sintering device also comprises a mounting platform, the sintering cylinder is fixedly arranged on the mounting platform, and the ejection mechanism is fixed below the mounting platform; the bottom of the mounting platform is fixedly provided with a footing for supporting the mounting platform to stably stand, two sides above the mounting platform are fixedly provided with vertical blocks, and the vertical blocks are positioned on two sides of the sintering cylinder and used for assisting in fixing the sintering cylinder.
Further, ejection mechanism includes first cylinder and connecting rod, and first cylinder is fixed in the mounting platform below, and first cylinder output runs through mounting platform and sealing connection in the roof fixed connection of assembly below, and first cylinder output fixedly connected with many connecting rods, connecting rod other end and roof fixed connection, first cylinder output pass through the connecting rod and drive roof upward movement, and then with the ejecting sintering section of thick bamboo of assembly.
Further, after the pressing die enters the sintering cylinder, the top opening of the sintering cylinder is sealed, the bottom of the sintering cylinder is provided with a flange, a plurality of openings are formed in the flange, the plurality of openings correspond to the plurality of connecting rods in a one-to-one mode, and the connecting rods penetrate through the openings in a sliding mode.
Further, a die cover is fixedly connected above the pressing die, and the die cover is propped against and sealed with the top opening of the sintering cylinder.
Further, the edge openings at the upper end and the lower end of the sintering cylinder are provided with grooves which are arranged towards the inside of the sintering cylinder in a recessed mode, a plurality of thread columns which are in a circumferential array are fixedly arranged in the grooves, a plurality of round holes are formed in the flange, the thread columns extend out of the round holes, and the flange is fixed at the bottom of the sintering cylinder through the screwing fit of nuts and the thread columns.
Further, the lifting mechanism comprises a mounting cross beam and a second cylinder; the installation crossbeam is fixed to be set up in i sintering machine's top, and second cylinder both ends are fixed connection respectively in installation crossbeam and mould lid, and the length that changes self by the second cylinder drives the embossing mold utensil up-and-down motion carries out extrusion work and the drawing of patterns work after firing to the powder.
Further, the cooling assembly is arranged on the i sintering machines in a penetrating way and comprises a driving pump, a cooling pipe, a cooling cavity, a soft guide pipe and a cooling pool; the cooling cavity is arranged in the pressing die, the adjacent cooling cavities are sequentially communicated through cooling pipes, the input end of the driving pump is communicated with the cooling tank, the output end of the driving pump is communicated with the input end of the cooling pipe through a soft guide pipe, the output end of the cooling pipe is communicated with the cooling tank through the cooling pipe, and the driving pump, the cooling pipe, the cooling cavity, the soft guide pipe and the cooling tank jointly form a liquid circulation.
Further, the device also comprises a control module and a thermal sensor, wherein the thermal sensor, the heating inductor and the driving pump are all in signal connection with the control module;
the heat sensor is arranged in one of the sintering drums and used for acquiring the temperature of the sintering drum, and the specifications of i sintering machines are consistent, and the heating performance is consistent, so that the temperature in one of the sintering drums is monitored;
the control module presets the heating time T 1 、T 2 、T 3 、T 4 And T 5 ，T 1 <T 2 <T 3 <T 4 <T 5 The control module is at T 1 Generating a first heating instruction, and heating the i sintering drums by the heating inductor according to the first heating instruction by electrifying;
the control module is at T 2 At the time, the internal temperature S of the sintering cylinder is obtained T2 ，S T2 Represented at T 2 Time sintering the internal temperature of the cylinder, if S T2 If the temperature is smaller than the first preset temperature, a first disconnection instruction is not generated, if S T2 If the temperature is greater than or equal to a first preset temperature, generating a first disconnection instruction, and sending the first disconnection instruction to the i heating inductors;
the heating inductor is powered off according to the first disconnection instruction to stop heating, and at T 2 To T 3 When the temperature in the sintering cylinder is lower than the first preset temperature, the control module generates a second heating instruction, the second heating instruction is sent to the i heating inductors, the heating inductors are electrified to heat according to the second heating instruction, and heating is stopped when the temperature in the i sintering cylinders is heated to the first preset temperature;
the control module is at T 3 Generating a third heating instruction at any time, sending the third heating instruction to the i heating inductors, and generating a second when the heating inductors are electrified and heated according to the third heating instruction and the i sintering cylinder internal temperatures are heated to a second preset temperatureThe switching-off instruction is sent to the i heating inductors, and the heating inductors stop heating according to the switching-off of the second switching-off instruction;
at T 4 To T 5 When the temperature in the sintering cylinder is lower than the second preset temperature, the control module generates a fourth heating instruction, the fourth heating instruction is sent to the i heating inductors, the heating inductors are electrified and heated according to the fourth heating instruction, and heating is stopped when the temperature in the sintering cylinder is heated to the second preset temperature;
the control module is at T 5 And generating a cooling instruction, sending the cooling instruction to a driving pump, starting the driving pump according to the cooling instruction, sequentially conveying cooling liquid in a cooling pool into i cooling cavities by the driving pump, and cooling the temperature in the sintering cylinder.
The application method of the production device of the silicon carbide lining cylinder body of the sand mill comprises the following steps:
s1, filling:
adding quantitative silicon carbide micro powder into each sintering cylinder;
s2, extrusion molding:
lowering the pressing die, extruding silicon carbide micro powder to form the basic shape of a blank, and sealing a die cover arranged on the upper layer;
s3, sectional firing:
after the heating inductor is electrified, the heating inductor heats the blank used for manufacturing the assembly, wherein after the blank is heated, the driving pump is started, and the cooling liquid in the cooling assembly flows in a liquid circulation formed by the driving pump, the cooling pipe, the cooling cavity, the soft guide pipe and the cooling pool together, so that superfluous heat is removed, and the cooling is accelerated to manufacture the assembly;
s4, turning an assembly:
sequentially disassembling and taking out the pressing die and the assembly, lifting the pressing die by a lifting mechanism, then ejecting the assembly by a top plate under the action of an ejection mechanism, and polishing and turning the assembly prepared in the step S4 at normal temperature to ensure that the surface of the assembly is smooth and complete;
s5, assembling:
the assembly ring is connected and fixed with the assembly body to form the complete silicon carbide lining cylinder body.
The application provides a production device of a silicon carbide lining cylinder of a sand mill and a use method thereof, which have the technical effects and advantages that:
the manufacturing method has the advantages that the silicon carbide lining cylinder body of the sand mill is divided into a plurality of sections, so that the single manufacturing specification of the silicon carbide lining cylinder body of the sand mill is reduced, the cost of a plurality of small machines is lower than that of a single large machine, and the economic benefit is ensured under the condition of reducing the burden of the machines;
the manufacturing method has the advantages that certain risk cost exists in industrial manufacturing, when large-scale instruments are manufactured, the manufacturing cost of the silicon carbide lining cylinder body of the sand mill is high, certain rejection rate exists in the prior art, if the whole silicon carbide lining cylinder body is partially damaged, the whole silicon carbide lining cylinder body is scrapped, under the same technical conditions, the large-scale silicon carbide lining cylinder body is manufactured, namely the whole silicon carbide lining cylinder body is directly manufactured at one time, and the defect at any position on the cylinder body can lead to scrapping of the silicon carbide lining cylinder body product; by means of the sectional manufacturing means, even if part of the product is unqualified such as cracks or distortion, only the assembly part is required to be recovered, so that the risk resistance of the device during manufacturing is improved;
because the silicon carbide lining cylinder in the sand mill is always impacted by the material to be ground and rubbed with the material to be ground, the silicon carbide lining cylinder is easy to crack and damage, the whole lining of the general silicon carbide lining cylinder needs to be replaced after being damaged, and the silicon carbide lining cylinder of the sand mill manufactured by the device can be used for replacing a single assembly, so that the replacement cost is reduced;
according to the application, the control module and the thermal sensor are arranged, so that the heating of the raw blank used for manufacturing the assembly body can be automatically controlled, the sintering time is preset, the temperature in the sintering cylinder is detected by the thermal sensor, the heating inductive heating power in different time points is controlled, the automation level of the device is improved, and the labor cost is reduced;
the driving pump, the cooling pipe, the cooling cavity, the soft guide pipe and the cooling pool form a liquid circulation together, so that heat on the assembly body in heat dissipation can be transferred to an external space in an acceleration way, the time spent by single manufacturing is saved, and the manufacturing efficiency of the device is indirectly improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present application;
FIG. 2 is a schematic view of a mounting structure of a sintering machine according to the present application;
FIG. 3 is a schematic view of the assembly ring structure in the present application;
FIG. 4 is a schematic diagram of an assembly connection in accordance with the present application;
FIG. 5 is a schematic cross-sectional view of a sintering machine according to the present application;
FIG. 6 is a schematic view of a mounting platform according to the present application;
FIG. 7 is a schematic view of the whole structure of the sintering machine according to the present application;
FIG. 8 is a schematic view of a pressing die in the present application;
FIG. 9 is a schematic view of a lifting mechanism according to the present application;
FIG. 10 is a schematic view of an assembly and mounting ring connection in accordance with the present application;
FIG. 11 is a schematic illustration of an ejector mechanism connection in accordance with the present application;
FIG. 12 is a schematic view of a flange structure according to the present application;
FIG. 13 is a schematic view of a cooling assembly according to the present application;
FIG. 14 is a time-temperature diagram of sintering of a silicon carbide liner in accordance with the present application;
fig. 15 is a schematic diagram of the operation of the control assembly of the present application.
In the figure:
1. a mounting platform; 101. a footing; 102. a vertical block;
2. a sintering cylinder; 201. heating the inductor; 202. a threaded column;
3. a pressing mold; 301. a mold cover;
4. an ejection mechanism; 401. a top plate; 402. a first cylinder; 403. a connecting rod; 404. a flange;
5. a lifting mechanism; 501. a cross beam; 502. a second cylinder;
6. an assembly; 7. a mounting ring;
8. a cooling assembly; 801. driving a pump; 802. a cooling tube; 803. a cooling chamber; 804. a flexible catheter; 805. and (5) a cooling pool.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1
Referring to fig. 1-3, a production device of a silicon carbide lining cylinder of a sand mill comprises i sinters, i is an integer larger than 1, the i sinters are sequentially arranged, a silicon carbide lining mounting cylinder is divided into i sections of assemblies 6,i from top to bottom, the i sections of assemblies 6 are correspondingly fired in the i sinters one by one, the i sections of assemblies 6 and i-1 sections of assembly rings 7 form a complete silicon carbide lining cylinder, and the i sections of assemblies 6 are correspondingly fired in the i sinters one by one; the device is a sectional type heating and cooling means, and because of the physical properties of the silicon carbide material, the silicon carbide lining barrel needs to be subjected to gradient heating during sintering in order to obtain a stronger and reliable silicon carbide lining barrel, the problems that the temperature rising rate is too high to generate deformation and cracking, the rate is too low to cause excessive energy to be used and environmental protection are avoided, the heating time used by the device is obtained by a plurality of sintering experiments by a person skilled in the art, and the heating time used for sintering a silicon carbide blank into a standard silicon carbide lining barrel is obtained by the person skilled in the art, so that the temperature in the sintering process is controlled accurately, the waste of heat energy is reduced as much as possible, and the green performance and economic benefit of the device are improved.
Referring to fig. 5 to 9, the sintering machine comprises a mounting platform 1, a sintering cylinder 2, a pressing die 3, an ejection mechanism 4 and a lifting mechanism 5, wherein the sintering cylinder 2 is fixedly arranged on the mounting platform 1, the cylinder wall of the sintering cylinder 2 is provided with an interlayer, and a heating inductor 201 is arranged in the interlayer; the pressing die 3 is arranged above the sintering cylinder 2, silicon carbide powder in the sintering cylinder 2 is extruded into an assembly 6 to be fired after the pressing die 3 enters the sintering cylinder 2, the top opening of the sintering cylinder 2 is sealed after the pressing die 3 enters the sintering cylinder 2, and the heating inductor 201 is electrified to heat the assembly 6 to be fired in the sintering cylinder 2 to be fired into the assembly 6; the lifting mechanism 5 is fixedly arranged above the sintering cylinder 2 and drives the pressing die 3 to move up and down integrally; the ejection mechanism 4 is fixed below the mounting platform 1, the ejection mechanism 4 is contacted with the bottom surface of the assembly body 6, the output end of the ejection mechanism 4 drives the assembly body 6 to move upwards, and the fired assembly body 6 is ejected into the sintering cylinder 2.
Referring to fig. 5, 8 and 9, a mold cover 301 is fixedly connected above the pressing mold 3, a detachable flange 404 is provided at the bottom of the sintering cylinder 2, the flange 404 is installed, the height of the ejector mechanism 4 is reduced, the space for loading silicon carbide powder in the lower half space inside the sintering cylinder 2 is complete, after adding silicon carbide powder, the silicon carbide powder cannot leak, the silicon carbide powder at this time is not formed yet and accumulated inside the sintering cylinder 2, the pressing mold 3 presses the silicon carbide powder downwards, so that the silicon carbide powder forms the basic shape of the assembly 6, the sintering cylinder 2, the pressing mold 3, the mold cover 301, the flange 404 and the ejector mechanism 4 below form a closed space, namely the shape of the assembly 6, the heating inductor 201 is started to heat the assembly 6, and the independent assembly 6 is formed under continuous heating, and waits for cooling.
Referring to fig. 4-7 and fig. 10, in this embodiment, the number of sintering machines is three, the silicon carbide lining mounting cylinder is divided into three sections of assemblies 6 from top to bottom, the three sections of assemblies 6 are assembled to form a silicon carbide lining cylinder, when the assemblies 6 are manufactured, silicon carbide powder is added into the sintering cylinder 2, then the sintering cylinder 2 is heated, heat on the sintering cylinder 2 is transferred into the silicon carbide powder in the sintering cylinder 2, after the gradient heating, constant temperature treatment is performed for a period of time, the sintering cylinder 2 is heated again, after the gradient heating, constant temperature treatment is performed for a period of time, the assemblies 6 are gradually sintered and formed in a gradual heating process, the assemblies 6 are taken out after cooling, the three assemblies 6 are combined to form a complete sand mill silicon carbide lining cylinder, and the complete sand mill silicon carbide lining cylinder is taken out, polished and is matched with the assembly ring 7 to connect the assemblies 6.
Example 2
Referring to fig. 5-7, the bottom of the installation platform 1 is fixedly provided with the footing 101 for supporting the installation platform 1 to stably stand, two sides above the installation platform 1 are fixedly provided with the stand blocks 102, the stand blocks 102 are positioned at two sides of the sintering cylinder 2 and used for assisting in fixing the sintering cylinder 2, the footing 101 is convenient for installing the whole sintering machine, the body of the sintering machine is kept stable, the installation of the sintering cylinder 2 is facilitated by arranging the stand blocks 102, and the installation process is simpler and more convenient with the help of the stand blocks 102.
Example 3
Referring to fig. 5 and 11, the ejection mechanism 4 includes a first cylinder 402 and a connecting rod 403, the first cylinder 402 is fixed below the mounting platform 1, the output end of the first cylinder 402 penetrates through the mounting platform 1 and is fixedly connected with a top plate 401 which is connected with the lower side of the assembly 6 in a sealing manner, the output end of the first cylinder 402 is fixedly connected with a plurality of connecting rods 403, the other ends of the connecting rods 403 are fixedly connected with the top plate 401, the first cylinder 402 is started, the output end of the first cylinder 402 drives the top plate 401 to move upwards through the connecting rods 403, and then the assembly 6 is ejected out of the sintering cylinder 2, after the firing is completed, the assembly 6 needs to be taken out, the assembly 6 is directly pulled out from the upper side, and the formed assembly 6 is possibly scratched and fractured, and in order to take out, the top plate is arranged below the assembly 6, and the assembly 6 is ejected out.
Example 4
Referring to fig. 5 and 12, the bottom of the sintering barrel 2 is provided with a flange 404, the inner ring of the flange 404 is provided with a plurality of openings, in this embodiment, the number of the openings and the number of the connecting rods are two, the two openings correspond to the positions of the two connecting rods 403 one by one, and the connecting rods 403 slide through the openings, by arranging the detachable flange 404, the opening is arranged below the sintering barrel 2, after the assembly 6 is manufactured, the manufactured assembly 6 needs to be taken out, in order to conveniently take out the assembly 6, by arranging the ejection mechanism 4, under the action of the ejection mechanism 4, the ejection mechanism 4 can eject the assembly 6 upwards, after the flange 404 is detached, enough space can be reserved below the assembly 6, so that the situation that the assembly 6 cannot be ejected upwards by the ejection mechanism 4 under the silicon carbide lining barrel is reduced, the possibility that the assembly 6 and the ejection mechanism 4 are damaged in the ejection process is avoided, and on the other hand, because the silicon carbide powder is added, the device needs to be cleaned frequently, and the device is more convenient to clean after the flange 404 is detached, and the device is improved.
Referring to fig. 5 and 8, a mold cover 301 is fixedly connected above the pressing mold 3, the mold cover 301 is sealed against the top opening of the sintering cylinder 2, and the mold cover 301 is connected above the sintering cylinder 2 in a sealing manner, so that dissipation of silicon carbide powder is reduced.
Referring to fig. 5-7, the edge openings at the upper and lower ends of the sintering cylinder 2 are provided with grooves which are concavely arranged towards the inside of the sintering cylinder 2, a plurality of thread columns 202 which are in a circumferential array are fixedly arranged in the grooves, round holes are formed in the flange 404 and the mold cover 301, after the flange 404 and the mold cover 301 are installed, the thread columns 202 extend out of the round holes, at the moment, the flange 404 and the mold cover 301 are fixed by additionally installing nuts, so that a closed sintering space is formed, the intake of external impurity air is reduced, and the product quality of the assembly 6 is improved.
Referring to fig. 1 and 9, the lifting mechanism 5 includes a mounting cross member 501 and a second cylinder 502; the installation beam 501 is fixedly arranged above the i sintering machines, two ends of the second air cylinder 502 are fixedly connected with the installation beam 501 and the die cover 301 respectively, the length of the second air cylinder 502 is changed to drive the pressing die 3 to move up and down, extrusion work of powder and demoulding work after firing are carried out, and after the second air cylinder 502 is started, the output end of the second air cylinder 502 drives the die cover 301, namely the pressing die to move up and down.
Example 5
Referring to fig. 1, 2 and 13, the device further comprises a cooling assembly 8 arranged through the i sintering machines, wherein the cooling assembly 8 comprises a driving pump 801, a cooling pipe 802, a cooling cavity 803, a soft guide pipe 804 and a cooling pool 805; the pressing die 3 is provided with cooling cavities 803, adjacent cooling cavities 803 are sequentially communicated through cooling pipes 802, the input end of a driving pump 801 is communicated with a cooling pool 805, the output end of the driving pump 801 is communicated with the input end of the cooling pipe 802 through a soft guide pipe 804, the output end of the cooling pipe 802 is communicated with the cooling pool 805 through the cooling pipe 802, the driving pump 801, the cooling pipe 802, the cooling cavities 803, the soft guide pipe 804 and the cooling pool 805 jointly form a liquid circulation, after the baking is finished, the silicon carbide product needs to be baked at a higher temperature for forming, meanwhile, in order to achieve a certain temperature, the sintering cylinder 2 used by the device also has a certain heat preservation performance, so that after the baking is finished, the heat dissipation process of the assembly 6 is slower, if the heat dissipation process is directly taken out, the assembly 6 in a high-temperature state can be damaged, therefore, the cooling assembly 8 is arranged to accelerate the heat dissipation rate of the assembly 6, the heat transmitted into the cooling pool 805 is reduced, the total time of the manufacturing process is shortened, and the economic benefit of the device is increased.
Example 6
Referring to fig. 10, 14 and 15, the device further comprises a control module and a thermal sensor, the heating inductance 201 and the drive pump 9 being in signal connection with the control module.
The thermal sensor is arranged in one of the sintering drums 2 and is used for acquiring the temperature S of the sintering drums 2, and the specifications of the i sintering machines are consistent, and the heating performance is consistent, so that the temperature S in one of the sintering drums 2 is monitored.
The control module presets the heating time T 1 、T 2 、T 3 、T 4 And T 5 ，T 1 <T 2 <T 3 <T 4 <T 5 The control module is at T 1 When the first heating command is generated, the heating inductor 201 is energized and heated according to the first heating command, and the temperatures in the i sintering drums 2 are heated.
The control module is at T 2 At the time, the internal temperature S of the sintering cylinder 2 is obtained T2 ，S T2 Represented at T 2 Time sintering the internal temperature of the cylinder 2, if S T2 If the temperature is smaller than the first preset temperature, a first disconnection instruction is not generated, if S T2 And if the temperature is greater than or equal to the first preset temperature, generating a first disconnection instruction, and sending the first disconnection instruction to the i heating inductors 201.
Heating inductance 201 according to the first disconnection instruction, the heating is stopped by power failure, and at T 2 Time to T 3 When the temperature in the sintering cylinder 2 is lower than the first preset temperature, the control module generates a second heating instruction, the second heating instruction is sent to the i heating inductors 201, the heating inductors 201 are electrified to heat according to the second heating instruction, and heating is stopped when the temperature in the i sintering cylinder 2 is heated to the first preset temperature.
The control module is at T 3 Generating a third heating instruction at any time, sending the third heating instruction to the i heating inductors 201, electrifying and heating the heating inductors 201 according to the third heating instruction, generating a second breaking instruction when the temperature in the i sintering drums 2 is heated to a second preset temperature, sending the second breaking instruction to the i heating inductors 201, and stopping heating by the heating inductors 201 according to the second breaking instruction.
At T 4 To T 5 When the temperature in the sintering cylinder 2 is lower than the second preset temperature, the control module generates a third heating instruction, the third heating instruction is sent to the i heating inductors 201, the heating inductors 201 are electrified to heat according to the second heating instruction, and heating is stopped when the temperature in the sintering cylinder 2 is heated to the second preset temperature.
The control module is at T 5 And generating a cooling command, sending the cooling command to the driving pump 801, starting the driving pump 801 according to the cooling command, and sequentially conveying the cooling liquid in the cooling pond 805 into the i cooling cavities 31 by the driving pump 801 to cool the temperature in the sintering cylinder 2.
The heating time used by the device is obtained by a person skilled in the art through a plurality of sintering experiments, and the average value of the time required by the sintering experiments is marked as time t for the heating time used by sintering the silicon carbide blank into the standard silicon carbide lining cylinder.
The application method of the production device of the silicon carbide lining cylinder body of the sand mill comprises the following steps:
s1, filling:
adding quantitative silicon carbide micro powder into each sintering cylinder 2;
s2, extrusion molding:
lowering the die 3, extruding the silicon carbide micro powder to form the basic shape of a blank, and sealing and installing the upper die cover 301;
s3, sectional firing:
after the heating inductor 201 is electrified, the heating inductor 201 carries out gradient heating and cooling on the assembly 6, wherein after the assembly 6 is manufactured, the driving pump 801 is started, and cooling liquid in the cooling assembly 8 flows in a liquid circulation formed by the driving pump 801, the cooling pipe 802, the cooling cavity 803, the soft guide tube 804 and the cooling pool 805 together, so that superfluous heat is carried away, and cooling is accelerated;
s4, turning a silicon carbide lining cylinder:
sequentially disassembling and taking out the pressing die 3 and the assembly 6, lifting the pressing die 3 by the lifting mechanism 5, ejecting the assembly 6 by the top plate 401 under the action of the ejection mechanism 4, polishing and turning the assembly 6 prepared by the step S4 at normal temperature, and keeping the surface of the assembly 6 smooth and complete;
s5, assembling:
the assembly body 6 is fixedly connected through the assembly ring 7 to form a complete silicon carbide lining cylinder body, as shown in fig. 4.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Finally: the foregoing description of the preferred embodiments of the application is not intended to limit the application to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (10)
1. The production device of the silicon carbide lining cylinder body of the sand mill is characterized by comprising i sintering machines, wherein i is an integer larger than 1, the i sintering machines are sequentially arranged, the silicon carbide lining mounting cylinder comprises i sections of assemblies (6), and the i sections of assemblies (6) are fired in the i sintering machines in a one-to-one correspondence manner; the sintering machine comprises a sintering cylinder (2), a pressing die (3), an ejection mechanism (4) and a lifting mechanism (5), wherein the cylinder wall of the sintering cylinder (2) is arranged in an interlayer, and a heating inductor (201) is arranged in the interlayer; the pressing die (3) is arranged above the sintering cylinder (2), and after the pressing die (3) enters the sintering cylinder (2), silicon carbide powder in the sintering cylinder (2) is extruded into an assembly (6) to be fired; the lifting mechanism (5) is fixedly arranged above the sintering cylinder (2) and is used for driving the pressing die (3) to move up and down; the ejection mechanism (4) is in contact with the bottom surface of the assembly (6) and is used for ejecting the fired assembly (6) into the sintering cylinder (2).
2. The production device of the silicon carbide lining cylinder body of the sand mill according to claim 1, further comprising a mounting platform (1), wherein the sintering cylinder (2) is fixedly arranged on the mounting platform (1), and the ejection mechanism (4) is fixed below the mounting platform (1); the bottom of the mounting platform (1) is fixedly provided with a footing (101) for supporting the mounting platform (1) to stably stand.
3. The production device of the silicon carbide lining cylinder body of the sand mill according to claim 2, wherein the ejection mechanism (4) comprises a first cylinder (402) and a connecting rod (403), the first cylinder (402) is fixed below the mounting platform (1), the output end of the first cylinder (402) penetrates through the mounting platform (1) and is fixedly connected with a top plate (401) which is hermetically connected below the assembly body (6), the output end of the first cylinder (402) is fixedly connected with a plurality of connecting rods (403), the other ends of the connecting rods (403) are fixedly connected with the top plate (401), and the output end of the first cylinder (402) drives the top plate (401) to move upwards through the connecting rods (403), so that the assembly body (6) is ejected out of the sintering cylinder (2).
4. A production device for a silicon carbide lining cylinder of a sand mill according to claim 3, characterized in that after a pressing die (3) enters a sintering cylinder (2), an opening at the top of the sintering cylinder (2) is sealed, a flange (404) is arranged at the bottom of the sintering cylinder (2), a plurality of openings are formed in the flange (404), the plurality of openings correspond to the plurality of connecting rods (403) in a one-to-one mode, and the connecting rods (403) are slidably arranged in the openings.
5. The production device of the silicon carbide lining cylinder body of the sand mill according to claim 4, wherein a mold cover (301) is fixedly connected above the pressing mold (3), and the mold cover (301) is propped against the top opening of the sintering cylinder (2) to be sealed.
6. The production device of the silicon carbide lining cylinder of the sand mill according to claim 5, wherein the edge openings at the upper end and the lower end of the sintering cylinder (2) are provided with grooves which are concavely arranged towards the inside of the sintering cylinder (2), a plurality of thread columns (202) which are in a circumferential array are fixedly arranged in the grooves, a plurality of round holes are formed in the flange (404), the thread columns (202) extend out of the round holes, and the flange (404) is fixed at the bottom of the sintering cylinder (2) through the screwing fit of nuts and the thread columns (202).
7. The production device of the silicon carbide lining cylinder of the sand mill according to claim 6, wherein the lifting mechanism (5) comprises a mounting cross beam (501) and a second cylinder (502); the mounting cross beam (501) is fixedly arranged above the i sintering machines, two ends of the second air cylinder (502) are fixedly connected with the mounting cross beam (501) and the die cover (301) respectively, and the length of the second air cylinder (502) is changed to drive the pressing die (3) to move up and down.
8. The production device of the silicon carbide lining cylinder of the sand mill according to claim 7, further comprising a cooling assembly (8) penetrating through the i sintering machines, wherein the cooling assembly (8) comprises a driving pump (801), a cooling pipe (802), a cooling cavity (803), a soft guide pipe (804) and a cooling pool (805); the cooling cavity (803) is arranged in the pressing die (3), adjacent cooling cavities (803) are sequentially communicated through cooling pipes (802), the input end of a driving pump (801) is communicated with a cooling pool (805), the output end of the driving pump (801) is communicated with the input end of the cooling pipes (802) through soft guide pipes (804), the output end of the cooling pipes (802) is communicated with the cooling pool (805) through the cooling pipes (802), and the driving pump (801), the cooling pipes (802), the cooling cavity (803), the soft guide pipes (804) and the cooling pool (805) jointly form a liquid circulation.
9. The production device of the silicon carbide lining cylinder of the sand mill, according to claim 8, further comprising a control module and a thermal sensor, wherein the thermal sensor, the heating inductor (201) and the driving pump (801) are in signal connection with the control module;
the thermal sensor is arranged in one of the sintering drums (2) and is used for acquiring the temperature of the sintering drum (2);
the control module presets the heating time T 1 、T 2 、T 3 、T 4 And T 5 ，T 1 <T 2 <T 3 <T 4 <T 5 The control module is at T 1 Generating a first heating instruction, and electrifying and heating the heating inductor (201) according to the heating instruction to heat the temperatures in the i sintering drums (2);
the control module is at T 2 When the internal temperature S of the sintering cylinder (2) is obtained T2 ，S T2 Represented at T 2 The internal temperature of the time sintering cylinder (2) is as follows T2 If the temperature is smaller than the first preset temperature, a first disconnection instruction is not generated, if S T2 Generating a first disconnection instruction if the temperature is larger than or equal to a first preset temperature, and sending the first disconnection instruction to the i heating inductors (201);
the heating inductor (201) stops heating according to the first disconnection instruction, and at T 2 To T 3 When the temperature in the sintering cylinder (2) is lower than a first preset temperature, the control module generates a second heating instruction, the second heating instruction is sent to i heating inductors (201), and the heating inductors (201) are used for controlling the heating coils according to the first heating instructionThe second heating instruction is electrified to heat, and heating is stopped when the temperatures in the i sintering drums (2) are heated to a first preset temperature;
the control module is at T 3 Generating a third heating instruction at any moment, sending the third heating instruction to i heating inductors (201), electrifying and heating the heating inductors (201) according to the third heating instruction, generating a second breaking instruction when the temperature in the i sintering drums (2) is heated to a second preset temperature, sending the second breaking instruction to the i heating inductors (201), and stopping heating by the heating inductors (201) according to the second breaking instruction;
at T 4 To T 5 When the temperature in the sintering cylinder (2) is lower than the second preset temperature, the control module generates a fourth heating instruction, the fourth heating instruction is sent to the i heating inductors (201), the heating inductors (201) are electrified and heated according to the fourth heating instruction, and heating is stopped when the temperature in the sintering cylinder (2) is heated to the second preset temperature;
the control module is at T 5 Generating a cooling instruction, sending the cooling instruction to a driving pump (801), starting the driving pump (801) according to the cooling instruction, and sequentially conveying cooling liquid in a cooling pool (805) into i cooling cavities (803) by the driving pump (801) to cool the temperature in a sintering cylinder (2).
10. A method for using a production device of a silicon carbide lining cylinder of a sand mill, which is realized based on the production device of the silicon carbide lining cylinder of the sand mill according to any one of claims 1 to 9, and is characterized by comprising the following steps:
s1, filling:
adding quantitative silicon carbide micro powder into each sintering cylinder (2);
s2, extrusion molding:
lowering the die (3), extruding silicon carbide micro powder to form the basic shape of a blank, and sealing and installing a die cover (301) on the upper layer;
s3, sectional firing:
after the heating inductor (201) is electrified, the heating inductor (201) heats a blank used for manufacturing the assembly (6), wherein after the blank is heated, a driving pump (801) is started, cooling liquid in a cooling assembly (8) flows in a liquid circulation formed by the driving pump (801), a cooling pipe (802), a cooling cavity (803), a soft guide pipe (804) and a cooling pool (805) together, and extra heat is removed, so that the assembly (6) is manufactured by accelerated cooling;
s4, turning an assembly:
sequentially disassembling and taking out the pressing die (3) and the assembly body (6), lifting the pressing die (3) by a lifting mechanism (5), then ejecting the assembly body (6) by a top plate (401) under the action of an ejection mechanism (4), and polishing and turning the assembly body (6) prepared in the step S4 at normal temperature to ensure the smoothness and completeness of the surface of the assembly body (6);
s5, assembling:
the assembly ring (7) is connected and fixed with the assembly body (6) to form a complete silicon carbide lining cylinder.
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| CN202311155132.7A CN117183060B (en) | 2023-09-08 | 2023-09-08 | Production device of silicon carbide lining cylinder of sand mill and application method of production device |
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| CN202311155132.7A CN117183060B (en) | 2023-09-08 | 2023-09-08 | Production device of silicon carbide lining cylinder of sand mill and application method of production device |
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Inventor after: Zhang Chi Inventor after: Yan Yongjie Inventor after: Tang Qian Inventor before: Zhang Chi Inventor before: Yan Yongjie Inventor before: Tang Qian |