CN115974555A - Isostatic pressing graphite production process - Google Patents
Isostatic pressing graphite production process Download PDFInfo
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- CN115974555A CN115974555A CN202211654384.XA CN202211654384A CN115974555A CN 115974555 A CN115974555 A CN 115974555A CN 202211654384 A CN202211654384 A CN 202211654384A CN 115974555 A CN115974555 A CN 115974555A
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- cooling
- control unit
- production process
- graphite production
- temperature detection
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 22
- 239000010439 graphite Substances 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000000462 isostatic pressing Methods 0.000 title claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 81
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 238000005087 graphitization Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 17
- 239000013589 supplement Substances 0.000 claims description 16
- 230000036760 body temperature Effects 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 6
- 239000000110 cooling liquid Substances 0.000 claims description 5
- 238000004898 kneading Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 3
- 239000002826 coolant Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 5
- 235000004237 Crocus Nutrition 0.000 abstract description 2
- 241000596148 Crocus Species 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000001354 calcination Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 abstract 1
- 238000004321 preservation Methods 0.000 description 11
- 230000000712 assembly Effects 0.000 description 9
- 238000000429 assembly Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 208000037656 Respiratory Sounds Diseases 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The utility model relates to an isostatic pressing graphite production technology relates to the technical field of isostatic pressing graphite production, including following step, the raw materials is selected, puies forward the processing, the crocus, and isostatic pressing shaping, the calcination, the graphitization still includes the cooling step after the graphitization step, puts into the body and cools off to the coolant liquid of different temperatures, and in this step, including cooling device, cooling device includes the cooling bath, and the holding in the cooling bath has the coolant liquid, and wherein the temperature of coolant liquid reduces from the top of cooling bath downwards gradually. The method and the device have the advantage of high space utilization rate.
Description
Technical Field
The application relates to the technical field of isostatic pressing graphite production, in particular to an isostatic pressing graphite production process.
Background
The isostatic pressing graphite is formed by pressing high-purity graphite. The material is not only widely used for civil use, but also plays an important role in the national defense point, belongs to a novel material and has a remarkable effect. It is an irreplaceable material for manufacturing single crystal furnaces, metal continuous casting graphite crystallizers, graphite electrodes for electric spark processing and the like, and is an excellent material for manufacturing rocket nozzles, speed reducing materials and reflecting materials of graphite reactors.
The production process comprises the following steps of raw material selection → kneading processing → grinding → isostatic pressing → roasting → graphitization. After the above steps are completed, the blank needs to be cooled. The existing cooling mode is that, put into the body to the pond that contains the cooling water, in order to avoid the great cooling rate that leads to of the temperature difference of body temperature and coolant liquid very fast, the problem of tiny crackle appears in the body surface, adopts a plurality of cooling ponds usually, and the temperature in a plurality of cooling ponds is from high to low, and the body passes through a plurality of cooling ponds in proper order (temperature is from high to low), thereby accomplishes the cooling, but this kind of mode space utilization is lower.
Disclosure of Invention
Aiming at the defects in the prior art, one of the purposes of the application is to provide an isostatic pressing graphite production process which has the advantage of higher space utilization rate.
The above object of the present application is achieved by the following technical solutions:
the utility model provides an isostatic pressing graphite production technology, includes following step, and the raw materials is selected, thoughtlessly holds between fingers processing, the crocus, isostatic compaction, the calcination, graphitization still includes the cooling step after the graphitization step, puts into the body to the coolant liquid of different temperatures in and cools off, and in this step, including cooling device, cooling device includes the cooling tank, and the holding in the cooling tank has the coolant liquid, and wherein the temperature of coolant liquid reduces from the top of cooling tank downwards gradually.
Through adopting above-mentioned technical scheme, in use promptly, because the temperature of coolant liquid is by the downward gradual reduction in top of cooling bath, consequently in use, the body descends to the bottom from the top gradually to can accomplish the cooling through different temperatures, thereby reach and reduce the probability that tiny crackle appears in the body surface, reduce the use of a plurality of cooling baths, space utilization is higher.
The application may be further configured in a preferred example to: the cooling device further comprises an accommodating mechanism, the accommodating mechanism comprises an accommodating assembly and a driving assembly, the accommodating assembly is used for accommodating the blank, and the driving assembly is used for driving the accommodating assembly to enter the cooling pool and move out of the cooling pool.
Through adopting above-mentioned technical scheme, in use, place the body on holding the subassembly to hold the subassembly through the drive assembly drive and go up and down, thereby can reach the purpose that drives the body and remove in the coolant liquid.
The application may be further configured in a preferred example to: the accommodating component comprises a supporting plate, a plurality of supporting strips are arranged on the supporting plate, a diversion trench is formed between every two adjacent supporting trenches, and the supporting strips are used for supporting the green body.
Through adopting above-mentioned technical scheme, the existence of support slot and guiding gutter can increase the direct area that contacts with the coolant liquid of body to can effectively improve the cooling effect.
The present application may be further configured in a preferred example to: the top of support bar be semicircle form, the support bar on be equipped with the heat conduction groove, the heat conduction groove follow support bar length direction run through the support bar.
Through adopting above-mentioned technical scheme, the top is the existence of the support bar of semicircle form and heat conduction groove, can further promote the heat dissipation cooling effect to the body.
The present application may be further configured in a preferred example to: drive assembly have two sets ofly, drive assembly include rolling up piece and drive chain, drive chain one end be connected with the rolling up piece, the other end with the backup pad be connected, the backup pad on still be equipped with the anticreep board, the height that highly is greater than the support bar of anticreep board, the anticreep board has two and symmetry to set up in the backup pad, the body is located between two anticreep boards.
Through adopting above-mentioned technical scheme, the existence of anticreep board can effectively reduce the probability that the body slided from the support bar.
The present application may be further configured in a preferred example to: the cooling pool is also provided with a heat preservation layer, the heat preservation layer covers the middle upper part of the cooling pool, and the cooling pool is also provided with a heat preservation cover.
Through adopting above-mentioned technical scheme, the existence of heat preservation and heat preservation lid can effectively keep warm to the water on cooling bath upper portion to can reduce the energy consumption.
The present application may be further configured in a preferred example to: cooling device still include control system, control system include a plurality of temperature detecting element, a plurality of body temperature detecting element, timing unit and the control unit, a plurality of temperature detecting element from last equipartition down be in the cooling bath, body temperature detecting element equipartition be in the anticreep board on, two sets of drive assembly work of control unit control for in the cooling bath when the body gets into, and keep at a certain height, and send timing signal to timing unit, timing unit is after receiving timing signal, timing, when the timing reaches predetermined duration, send tilt signal to the control unit, the control unit is after receiving the tilt signal, a set of drive assembly of control carries out the rolling, make the backup pad slope, until body and anticreep board contact, body temperature detecting element detects the temperature of body and sends to the control unit, the control unit reads the temperature that the water temperature detecting element that corresponds the position detected after receiving the temperature that body temperature detecting element sent, and compare, if the temperature difference is in error band, the control unit control drive assembly work drive backup pad descends.
Through adopting above-mentioned technical scheme, in use promptly, through the slope to the backup pad for can take place to remove placing the body in the backup pad, thereby can make the contact effect of body lower surface and coolant liquid better, also can detect the temperature of body simultaneously, and carry out the comparison with the temperature of current degree of depth, thereby the degree of depth that can more accurate control backup pad removed in the cooling bath, thereby make the volume cooling effect better, reduce the probability that the crackle appears on the body.
The application may be further configured in a preferred example to: the cooling device also comprises a cold liquid supplement component and a hot liquid supplement component, the control unit reads the temperatures detected by all the water temperature detection units, the maximum value and the minimum value are respectively calculated with the standard value, when the difference value between the maximum value and the standard value is not in the error range, the control unit controls the hot liquid supplement component to add hot liquid, and when the difference value between the minimum value and the standard value is not in the error range, the control unit controls the cold liquid supplement component to add cold liquid.
Through adopting above-mentioned technical scheme, in use, along with the increase of time, need carry out temperature regulation and control in the cooling bath, consequently detect the temperature through temperature detecting element, can more accurate regulate and control the temperature.
Drawings
FIG. 1 is a schematic process flow diagram of the present application.
Fig. 2 is a schematic cross-sectional structural view of the cooling device of the present application.
Fig. 3 is a schematic view of the support plate and support bar construction of the present application.
Fig. 4 is a schematic structural diagram of the control system of the present application.
Reference numerals: 1. a cooling tank; 11. a heat-insulating layer; 12. a heat preservation cover; 21. a support plate; 22. an anti-drop plate; 23. a diversion trench; 24. a heat conducting groove; 25. a support groove; 31. a drive chain; 32. a drive assembly; 33. a support disc; 41. a control unit; 42. a green body temperature detection unit; 43. a timing unit; 44. a water temperature detection unit; 45. a hot liquid supplement; 46. cold liquid supplement piece.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Referring to fig. 1-4, for the isostatic pressing graphite production process disclosed in the present application, the process includes the following steps, raw material selection, kneading, milling, isostatic pressing, baking, and graphitization, and further includes a cooling step after the graphitization step, the blank is placed into cooling liquids with different temperatures for cooling, in this step, a cooling device is included, the cooling device includes a cooling tank 1, the cooling liquid is contained in the cooling tank 1, and the temperature of the cooling liquid is gradually reduced from the top of the cooling tank 1 downwards. The upper middle part of the cooling pool 1 is coated with a heat preservation layer 11, and the heat preservation layer 11 can be made of rock wool heat preservation plates. The cooling pool 1 is also provided with a heat-insulating cover 12 for covering the cooling pool 1.
The cooling device comprises a receiving mechanism which comprises a receiving assembly and a driving assembly 32, wherein the driving assembly 32 is used for driving the receiving assembly to ascend and descend in the cooling pool 1. Hold the mechanism and include backup pad 21 and anticreep board 22, anticreep board 22 have two and the symmetry install in backup pad 21, still be equipped with a plurality of support bar in backup pad 21, the height that highly is less than anticreep board 22 of support bar. The support bar is located between two anticreep boards 22, forms guiding gutter 23 between the adjacent support bar, and the top of support bar is the semi-cylinder, still sets up liquid on the support bar and has heat conduction groove 24, and heat conduction groove 24 runs through the support bar along the length direction of support bar, and parallels with anticreep board 22.
The driving assemblies 32 are provided in two sets, one set of driving assemblies 32 is used for driving one retaining plate 22, and the other set of driving assemblies 32 is used for driving the other retaining plate 22. Drive assembly 32 includes rolling up piece and two drive chain 31, and the rolling up piece includes motor and rolling axle, and the one end and the rolling axle of two drive chain 31 are connected, and the other end is connected with anticreep board 22, and the through-hole that is used for drive chain 31 to pass is offered to heat preservation lid 12, and fixedly connected with is used for supporting the supporting disk 33 of heat preservation lid 12 on the drive chain 31.
In use, place the body on the support bar, the coiling part unreels afterwards for backup pad 21 descends, enters into the cooling water to cooling tank 1 in, and in the cooling process, can work through adjusting different coiling parts, makes backup pad 21 slope, makes the body remove on the support bar, and with the contact of anticreep plate 22, at this in-process, can carry out good cooling to the body.
The cooling device also includes a control system, a cold fluid supplement 46 and a hot fluid supplement 45. The control system comprises a timing unit 43, a control unit 41, a plurality of water temperature detection units 44 and a plurality of blank temperature detection units 42. A plurality of water temperature detecting units 44 are uniformly distributed in the cooling pool 1 from top to bottom, and the blank body temperature detecting units 42 are uniformly distributed on the two anti-falling plates 22. The control unit 41 is used for controlling the operation of the two sets of driving assemblies 32.
In use, the control unit 41 controls the driving assembly 32 to work, unreel the driving chain 31, so that the supporting plate 21 enters the cooling pool 1 and is kept at a certain height, then the control unit 41 sends a timing signal to the timing unit 43, the timing unit 43 performs timing after receiving the timing signal, when the timing reaches a preset time length, sends an inclination signal to the control unit 41, the control unit 41 receives the inclination signal, controls one group of driving assemblies 32 to reel, so that the supporting plate 21 inclines until the blank is contacted with the anti-falling plate 22, the blank temperature detection unit 42 detects the temperature of the blank and sends the temperature to the control unit 41, then the control unit 41 controls the group of driving assemblies 32 to unreel, so that the supporting plate 21 is leveled, controls the other group of driving assemblies 32 to reel, so that the supporting plate 21 inclines to the other side and is contacted with the anti-falling plate 22, the blank temperature detection unit 42 detects the temperature of the blank and sends the temperature to the control unit 41, after receiving the temperatures sent by the two groups of blank temperature detection units 42, the control unit 41 reads the temperature detected by the water temperature detection unit 44 at the corresponding position, compares the temperature, and if the temperature difference is within an error range, the control unit 41 controls the driving assemblies to slowly lower the driving assemblies 21 to lower height.
The control unit 41 reads the temperatures detected by all the water temperature detecting units 44, calculates the difference between the maximum value and the minimum value and the standard value, respectively, controls the hot liquid supplement 45 to add hot liquid when the difference between the maximum value and the standard value is not within the error range, and controls the cold liquid supplement 46 to add cold liquid when the difference between the minimum value and the standard value is not within the error range. The hot liquid supplement 45 includes a hot liquid pipe disposed at the top of the cooling tank 1 for introducing hot water into the cooling tank 1. The cold liquid supplement 46 comprises a cold liquid pipe, which is arranged at the bottom of the cooling pool 1 and is used for introducing cold water into the cooling pool 1. The middle part and the lower part of the cooling pool 1 are also provided with a plurality of drain pipes, when hot water is added, the drain pipe in the middle part is firstly opened to discharge liquid with corresponding volume, when hot water is added, the drain pipe in the lower part is firstly opened to discharge liquid with corresponding volume when cold water is added, and when hot water is added.
The implementation principle of the embodiment is as follows: in use, go up and down in cooling tank 1 through drive assembly 32 drive to accomplish the cooling to the body, adjust the removal of body simultaneously according to the real-time temperature and the temperature of body, consequently can effectively reduce the body because the great probability that leads to the tiny crackle that appears of the difference in temperature.
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 (8)
1. The isostatic pressing graphite production process comprises the following steps of raw material selection, kneading processing, grinding, isostatic pressing, roasting and graphitization, and is characterized in that: and after the graphitization step, a cooling step of putting the blank into cooling liquid with different temperatures for cooling is further included, and in the step, a cooling device is included and comprises a cooling pool (1), the cooling pool (1) contains the cooling liquid, wherein the temperature of the cooling liquid is gradually reduced from the top of the cooling pool (1) downwards.
2. The isostatic graphite production process according to claim 1, wherein: the cooling device further comprises a containing mechanism, the containing mechanism comprises a containing assembly and a driving assembly (32), the containing assembly is used for containing the green bodies, and the driving assembly (32) is used for driving the containing assembly to enter the cooling pool (1) and move out of the cooling pool (1).
3. The isostatic graphite production process according to claim 2, wherein: the holding assembly comprises a supporting plate (21), a plurality of supporting strips are arranged on the supporting plate (21), a diversion trench (23) is formed between adjacent supporting trenches (25), and the supporting strips are used for supporting the green body.
4. The isostatic graphite production process according to claim 3, wherein: the top of support bar be semicircle form, the support bar on be equipped with heat conduction groove (24), heat conduction groove (24) follow support bar length direction run through the support bar.
5. The isostatic graphite production process according to claim 4, wherein: drive assembly (32) have two sets ofly, drive assembly (32) including rolling up piece and drive chain (31), drive chain (31) one end be connected with the rolling up piece, the other end with backup pad (21) be connected, backup pad (21) on still be equipped with anticreep board (22), the height that highly is greater than the support bar of anticreep board (22), anticreep board (22) have two and symmetry to set up in backup pad (21), the body is located between two anticreep boards (22).
6. The isostatic graphite production process according to claim 1, wherein: the cooling tank (1) is further provided with a heat insulation layer (11), the heat insulation layer (11) covers the middle upper part of the cooling tank (1), and the cooling tank (1) is further provided with a heat insulation cover (12).
7. The isostatic graphite production process according to claim 5, wherein: the cooling device also comprises a control system, the control system comprises a plurality of water temperature detection units (44), a plurality of blank temperature detection units (42), a timing unit (43) and a control unit (41), the plurality of water temperature detection units (44) are uniformly distributed in the cooling pool (1) from top to bottom, the blank temperature detection units (42) are uniformly distributed on the anti-drop plate (22), the control unit (41) controls the two groups of driving components (32) to work, so that the blank enters the cooling pool (1), and kept at a certain height, and sends a timing signal to the timing unit (43), the timing unit (43) performs timing after receiving the timing signal, when the timing reaches the preset time length, an inclination signal is sent to the control unit (41), the control unit (41) controls a group of driving components (32) to wind after receiving the inclination signal, the supporting plate (21) is inclined until the blank body is contacted with the anti-drop plate (22), the blank body temperature detection unit (42) detects the temperature of the blank body and sends the temperature to the control unit (41), the control unit (41) reads the temperature detected by the water temperature detection unit (44) at the corresponding position after receiving the temperature sent by the blank body temperature detection unit (42), and comparing, and if the temperature difference is within the error range, controlling the driving component (32) to work by the control unit (41) to drive the supporting plate (21) to descend.
8. The isostatic graphite production process according to claim 7, wherein: the cooling device also comprises a cold liquid supplement part (46) and a hot liquid supplement part (45), the control unit (41) reads the temperatures detected by all the water temperature detection units (44), the maximum value and the minimum value are respectively calculated by taking the difference value with the standard value, when the difference value between the maximum value and the standard value is not in the error range, the control unit (41) controls the hot liquid supplement part (45) to add hot liquid, and when the difference value between the minimum value and the standard value is not in the error range, the control unit (41) controls the cold liquid supplement part (46) to add cold liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211654384.XA CN115974555B (en) | 2022-12-22 | 2022-12-22 | Isostatic pressing graphite production process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211654384.XA CN115974555B (en) | 2022-12-22 | 2022-12-22 | Isostatic pressing graphite production process |
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| CN115974555A true CN115974555A (en) | 2023-04-18 |
| CN115974555B CN115974555B (en) | 2024-01-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116986903A (en) * | 2023-08-17 | 2023-11-03 | 江苏宏基高新材料股份有限公司 | Isostatic pressing graphite production process and control system |
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| CN115974555B (en) | 2024-01-26 |
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