CN115974555B - Isostatic pressing graphite production process - Google Patents
Isostatic pressing graphite production process Download PDFInfo
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- CN115974555B CN115974555B CN202211654384.XA CN202211654384A CN115974555B CN 115974555 B CN115974555 B CN 115974555B CN 202211654384 A CN202211654384 A CN 202211654384A CN 115974555 B CN115974555 B CN 115974555B
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- cooling
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- control unit
- temperature detection
- supporting
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 17
- 239000010439 graphite Substances 0.000 title claims abstract description 17
- 238000000462 isostatic pressing Methods 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 74
- 239000000110 cooling liquid Substances 0.000 claims abstract description 13
- 238000005087 graphitization Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000000227 grinding Methods 0.000 claims abstract description 5
- 238000004898 kneading Methods 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000004321 preservation Methods 0.000 claims description 12
- 230000001502 supplementing effect Effects 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 8
- 230000000712 assembly Effects 0.000 description 7
- 238000000429 assembly Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000036760 body temperature Effects 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 5
- 239000013589 supplement Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Press Drives And Press Lines (AREA)
Abstract
The application relates to an isostatic pressing graphite production process, and relates to the technical field of isostatic pressing graphite production, and the method comprises the following steps of raw material selection, kneading processing, grinding, isostatic pressing, roasting and graphitization, wherein after the graphitization step, a cooling step is further included, a blank body is placed into cooling liquid with different temperatures for cooling, in the step, a cooling device is included, the cooling device comprises a cooling tank, cooling liquid is contained in the cooling tank, and the temperature of the cooling liquid is gradually reduced from the top of the cooling tank downwards. The method has the advantage of higher 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 graphite is pressed from high purity graphite. The material is not only used for civil use, but also plays an important role in the tip of national defense, belongs to a novel material and is attractive. It is an irreplaceable material for manufacturing single crystal furnace, metal continuous casting graphite crystallizer, graphite electrode for electric spark processing, etc., and is an excellent material for manufacturing rocket nozzle, deceleration material and reflecting material of graphite reactor.
The production process comprises the following steps of raw material selection, kneading processing, grinding, isostatic compaction, roasting and graphitization. After the above steps are completed, the blank is also cooled. In the existing cooling mode, a blank is placed into a water tank containing cooling water, in order to avoid the problem that the cooling speed is high due to the fact that the temperature difference between the temperature of the blank and the temperature of cooling liquid is large, tiny cracks appear on the surface of the blank, a plurality of cooling water tanks are usually adopted, the temperature of the plurality of cooling water tanks is high to low, the blank sequentially passes through the plurality of cooling water tanks (the temperature is high to low), and therefore cooling is achieved, but the space utilization rate of the mode is low.
Disclosure of Invention
Aiming at the defects existing 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 isostatic graphite production process includes the steps of material selection, kneading, grinding, isostatic pressing, roasting and graphitizing, and after graphitizing, the steps of cooling, cooling the blank in cooling liquid of different temperature, and the process includes cooling unit comprising cooling pond with cooling liquid inside gradually lowered temperature from the top.
By adopting the technical scheme, in use, the temperature of the cooling liquid is gradually reduced from the top of the cooling pool to the bottom, so that in use, the blank body gradually descends from the top to the bottom, cooling at different temperatures can be completed, the probability of tiny cracks on the surface of the blank body is reduced, the use of a plurality of cooling pools is reduced, and the space utilization rate is higher.
The present application may be further configured in a preferred example to: the cooling device also comprises a containing mechanism, the containing mechanism comprises a containing component and a driving component, the containing component is used for containing the blank, and the driving component is used for driving the containing component 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 drive assembly drive and go up and down, thereby can reach the purpose that drives the body and remove in the coolant liquid.
The present application may be further configured in a preferred example to: the accommodating assembly comprises a supporting plate, a plurality of supporting bars are arranged on the supporting plate, diversion trenches are formed between adjacent supporting grooves, and the supporting bars are used for supporting the blank.
Through adopting above-mentioned technical scheme, the existence of supporting groove and guiding gutter can increase the direct area of contacting 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 the supporting bar is semicircular, a heat conducting groove is arranged on the supporting bar, and the heat conducting groove penetrates through the supporting bar along the length direction of the supporting bar.
Through adopting above-mentioned technical scheme, the top is semicircular support bar and the existence of heat conduction groove, can further promote the cooling effect of dispelling the heat to the body.
The present application may be further configured in a preferred example to: the driving assembly has two groups, the driving assembly include rolling spare and drive chain, drive chain one end be connected with the rolling spare, the other end with the backup pad be connected, the backup pad on still be equipped with the anticreep board, the height of anticreep board is greater than the height of support bar, the anticreep board has two and the symmetry sets up in the backup pad, the body is located between two anticreep boards.
By adopting the technical scheme, the probability that the blank body slides off the supporting bar can be effectively reduced due to the existence of the anti-falling plate.
The present application may be further configured in a preferred example to: the cooling tank on still be equipped with the heat preservation, the heat preservation cover in cooling tank middle and upper portion, the cooling tank on still be equipped with the heat preservation lid.
Through adopting above-mentioned technical scheme, the existence of heat preservation and heat preservation lid can effectively keep warm 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: the cooling device also comprises a control system, the control system comprises a plurality of water temperature detection units, a plurality of blank temperature detection units, a timing unit and a control unit, the water temperature detection units are uniformly distributed in the cooling tank from top to bottom, the blank temperature detection units are uniformly distributed on the anti-drop plate, the control unit controls two groups of driving components to work, so that the blank is in the cooling tank and kept at a certain height, a timing signal is sent to the timing unit, the timing unit counts time after receiving the timing signal, when the timing reaches a preset time length, an inclination signal is sent to the control unit, the control unit controls one group of driving components to roll up after receiving the inclination signal, so that the support plate is inclined until the blank contacts with the anti-drop plate, the blank temperature detection unit detects the temperature of the blank and sends the temperature to the control unit, the control unit reads the temperature detected by the corresponding position of the water temperature detection unit after receiving the temperature sent by the blank temperature detection unit, compares the temperature difference, and if the temperature difference is in an error range, the control unit controls the driving components to work and drive down.
Through adopting above-mentioned technical scheme, in use promptly, through the slope to the backup pad for can take place to remove to placing the body in the backup pad, thereby can make the body lower surface better with the contact effect of coolant liquid, also can detect the temperature of body simultaneously, and compare with the temperature of current degree of depth, thereby can be more accurate control backup pad the degree of depth that removes in the cooling bath, thereby make and account for the cooling effect better, reduce the probability that the crackle appears on the body.
The present application may be further configured in a preferred example to: the cooling device also comprises a cold liquid supplementing part and a hot liquid supplementing part, wherein the control unit reads the temperatures detected by all water temperature detecting units, takes the maximum value and the minimum value to respectively calculate the difference value with the standard value, controls the hot liquid supplementing part to carry out hot liquid adding when the difference value between the maximum value and the standard value is not in the error range, and controls the cold liquid supplementing part to carry out cold liquid adding when the difference value between the minimum value and the standard value is not in the error range.
Through adopting above-mentioned technical scheme, in use, in the growth along with the time, need carry out temperature regulation and control in the cooling bath, consequently detect water temperature through temperature detecting element, can be more accurate regulate and control the temperature.
Drawings
FIG. 1 is a schematic illustration of the process flow of the present application.
Fig. 2 is a schematic cross-sectional view of the cooling device of the present application.
Fig. 3 is a schematic view of the support plate and support bar structure of the present application.
Fig. 4 is a schematic diagram of the principle and structure of the control system of the present application.
Reference numerals: 1. a cooling pool; 11. a heat preservation layer; 12. a thermal insulation cover; 21. a support plate; 22. an anti-drop plate; 23. a diversion trench; 24. a heat conduction groove; 25. a support groove; 31. a drive chain; 32. a drive assembly; 33. a support plate; 41. a control unit; 42. a green body temperature detection unit; 43. a timing unit; 44. a water temperature detection unit; 45. a hydrothermal replenishment; 46. a cold liquid supplement.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
Referring to fig. 1-4, in order to disclose an isostatic pressing graphite production process, the process comprises the following steps of raw material selection, kneading processing, grinding, isostatic pressing, roasting, graphitization, and cooling after the graphitization step, putting a blank into cooling liquid with different temperatures for cooling, wherein the process comprises a cooling device, the cooling device comprises a cooling tank 1, cooling liquid is contained in the cooling tank 1, and the temperature of the cooling liquid gradually decreases from the top of the cooling tank 1. The upper middle upper part of the cooling tank 1 is coated with an insulating layer 11, and the insulating layer 11 can be a rock wool insulating plate. The cooling tank 1 is also provided with a heat preservation cover 12 for covering the cooling tank 1.
The cooling device comprises a containing mechanism, the containing mechanism comprises a containing assembly and a driving assembly 32, and the driving assembly 32 is used for driving the containing assembly to lift in the cooling pond 1. The accommodating mechanism comprises two supporting plates 21 and two anti-falling plates 22, the anti-falling plates 22 are symmetrically arranged on the supporting plates 21, a plurality of supporting bars are further arranged on the supporting plates 21, and the heights of the supporting bars are smaller than those of the anti-falling plates 22. The supporting strips are positioned between the two anti-falling plates 22, a diversion trench 23 is formed between the adjacent supporting strips, the tops of the supporting strips are semi-cylindrical, the supporting strips are also provided with liquid heat conducting trenches 24, and the heat conducting trenches 24 penetrate through the supporting strips along the length direction of the supporting strips and are parallel to the anti-falling plates 22.
The drive assemblies 32 have two sets, one set of drive assemblies 32 for driving one of the drop-out plates 22 and the other set of drive assemblies 32 for driving the other of the drop-out plates 22. The driving assembly 32 comprises a winding part and two driving chains 31, the winding part comprises a motor and a winding shaft, one ends of the two driving chains 31 are connected with the winding shaft, the other ends of the two driving chains are connected with the anti-falling plate 22, the heat preservation cover 12 is provided with a through hole for the driving chains 31 to pass through, and the driving chains 31 are fixedly connected with a supporting disc 33 for supporting the heat preservation cover 12.
In use, the blank is placed on the support bar and then the winding is unwound so that the support plate 21 descends into the cooling water in the cooling bath 1, during which the work can be performed by adjusting the different winding so that the support plate 21 tilts so that the blank moves on the support bar and contacts the anti-drop plate 22, during which the blank can be well cooled.
The cooling device further comprises 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 green body temperature detection units 42. A plurality of water temperature detection units 44 are uniformly distributed in the cooling tank 1 from top to bottom, and the blank temperature detection units 42 are uniformly distributed on the two anti-drop plates 22. The control unit 41 is used to control the operation of the two sets of drive assemblies 32.
In use, the control unit 41 controls the driving assembly 32 to operate, unwinds the driving chain 31 to enable the supporting plate 21 to enter the cooling pond 1 and keep at a certain height, then the control unit 41 sends a timing signal to the timing unit 43, the timing unit 43 counts after receiving the timing signal, when the timing reaches a preset duration, sends an inclination signal to the control unit 41, the control unit 41 controls one group of driving assemblies 32 to wind up after receiving the inclination signal to enable the supporting plate 21 to incline until the green body contacts with the anti-drop plate 22, the green body temperature detection unit 42 detects the temperature of the green body and sends the temperature to the control unit 41, then the control unit 41 controls the group of driving assemblies 32 to unwind to enable the supporting plate 21 to recover to be horizontal, controls the other group of driving assemblies 32 to wind up, enables the supporting plate 21 to incline to the other side and contact with the anti-drop plate 22, the green body temperature detection unit 42 detects the temperature of the green body and sends the temperature to the control unit 41, and the control unit 41 reads the temperature detected by the corresponding position of the water temperature detection unit 44 after receiving the temperatures sent by the two groups of green body temperature detection units 42, and compares the temperature difference within an error range, and controls the control unit 41 to drive the driving assembly 21 to drop to a high driving speed if the temperature difference is within the error range.
The control unit 41 reads the temperatures detected by all the water temperature detection units 44, calculates the difference between the maximum value and the minimum value and the standard value, controls the hot liquid supplementing member 45 to perform hot liquid adding when the difference between the maximum value and the standard value is not within the error range, and controls the cold liquid supplementing member 46 to perform cold liquid adding 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 provided at the top of the cooling tank 1 for introducing hot water into the cooling tank 1. The cold liquid supplement 46 includes a cold liquid pipe provided at the bottom of the cooling tank 1 for introducing cold water into the cooling tank 1. The middle part and the lower part of the cooling tank 1 are also provided with a plurality of drain pipes, when hot water is added, the drain pipes in the middle part are firstly opened to drain the liquid with corresponding volumes, when hot water is added, when cold water is added, the drain pipes in the lower part are firstly opened to drain the liquid with corresponding volumes, and when hot water is added, the water is added.
The implementation principle of the embodiment is as follows: in use, the cooling pool 1 is driven to lift by the driving component 32, so that the blank is cooled, and meanwhile, the movement of the blank is regulated according to the real-time temperature and the water temperature of the blank, so that the probability of tiny cracks of the blank due to large temperature difference can be effectively reduced.
The embodiments of the present invention are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (3)
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: the graphitization step is followed by a cooling step, wherein the blank is placed into cooling liquid with different temperatures for cooling, and in the step, the graphitization step comprises a cooling device, wherein the cooling device comprises a cooling tank (1), the cooling tank (1) is internally provided with the cooling liquid, and the temperature of the cooling liquid is gradually reduced from the top of the cooling tank (1); the cooling device also comprises a containing mechanism, wherein the containing mechanism comprises a containing component and a driving component (32), the containing component is used for containing the blank, and the driving component (32) is used for driving the containing component to enter the cooling tank (1) and move out of the cooling tank (1); the accommodating assembly comprises a supporting plate (21), a plurality of supporting bars are arranged on the supporting plate (21), guide grooves (23) are formed between adjacent supporting grooves (25), and the supporting bars are used for supporting the blank; the top of the supporting bar is semicircular, a heat conducting groove (24) is arranged on the supporting bar, and the heat conducting groove (24) penetrates through the supporting bar along the length direction of the supporting bar; the driving assembly (32) comprises two groups, the driving assembly (32) comprises a winding part and a driving chain (31), one end of the driving chain (31) is connected with the winding part, the other end of the driving chain is connected with the supporting plate (21), the supporting plate (21) is also provided with an anti-falling plate (22), the height of the anti-falling plate (22) is larger than that of the supporting bar, the anti-falling plates (22) are symmetrically arranged on the supporting plate (21), and a blank body is positioned between the two anti-falling plates (22); 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 water temperature detection units (44) are uniformly distributed in the cooling tank (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 two groups of driving components (32) to work so that the blank enters the cooling tank (1) and is kept at a certain height, and sends a timing signal to the timing unit (43), the timing unit (43) counts time after receiving the timing signal, when the timing reaches a preset time length, the control unit (41) sends an inclination signal to the control unit (41), after receiving the inclination signal, the control unit (41) controls one group of driving components (32) to wind up, so that the supporting plate (21) inclines until the blank contacts with the anti-drop plate (22), the temperature detected by the blank temperature detection unit (42) is sent to the control unit (41), the control unit (41) reads the temperature detected by the blank temperature detection unit (42) in the corresponding temperature detection unit (42) after receiving the blank temperature detection unit (42) and compares the temperature difference value with the temperature detection unit (42) when the temperature difference value in the temperature detection unit (42) and reads the temperature difference value, the control unit (41) controls the driving assembly (32) to work so as to drive the supporting plate (21) to descend.
2. The process for producing isostatic graphite according to claim 1, wherein: the cooling tank (1) on still be equipped with heat preservation (11), heat preservation (11) cover in cooling tank (1) upper portion in, cooling tank (1) on still be equipped with heat preservation lid (12).
3. The process for producing isostatic graphite according to claim 1, wherein: the cooling device also comprises a cold liquid supplementing piece (46) and a hot liquid supplementing piece (45), wherein the control unit (41) reads the temperatures detected by all water temperature detecting units (44), the maximum value and the minimum value are respectively calculated by difference values 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 supplementing piece (45) to carry out hot liquid adding, 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 supplementing piece (46) to carry out cold liquid adding.
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 CN115974555A (en) | 2023-04-18 |
| CN115974555B true CN115974555B (en) | 2024-01-26 |
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| CN116986903B (en) * | 2023-08-17 | 2024-03-26 | 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070224425A1 (en) * | 2006-03-24 | 2007-09-27 | Christ Martin U | Process for manufacture of a latent heat storage body |
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| RU2012100051A (en) * | 2012-01-11 | 2013-07-20 | ООО "Донкарб Графит" | METHOD FOR PRODUCING FINE GRAPHITE GRAPHITE OF ISOSTATIC PRESSING |
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