CN117444204A - Roller bottom type driven powder metallurgy furnace - Google Patents
Roller bottom type driven powder metallurgy furnace Download PDFInfo
- Publication number
- CN117444204A CN117444204A CN202311438933.4A CN202311438933A CN117444204A CN 117444204 A CN117444204 A CN 117444204A CN 202311438933 A CN202311438933 A CN 202311438933A CN 117444204 A CN117444204 A CN 117444204A
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- China
- Prior art keywords
- roller
- silicon carbide
- powder metallurgy
- water cooling
- dewaxing
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- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 26
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 81
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 73
- 238000001816 cooling Methods 0.000 claims abstract description 56
- 238000010438 heat treatment Methods 0.000 claims abstract description 44
- 230000005540 biological transmission Effects 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000005245 sintering Methods 0.000 claims abstract description 12
- 230000008878 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 238000010583 slow cooling Methods 0.000 claims abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 30
- 239000010935 stainless steel Substances 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 26
- 238000004321 preservation Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 19
- 238000009413 insulation Methods 0.000 abstract description 8
- 230000006872 improvement Effects 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract description 3
- 238000005272 metallurgy Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000013461 design Methods 0.000 description 10
- 239000000843 powder Substances 0.000 description 10
- 239000002994 raw material Substances 0.000 description 10
- 238000012546 transfer Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000000314 lubricant Substances 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
- B22F3/1021—Removal of binder or filler
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
- F27B9/028—Multi-chamber type furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
- F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
- F27B2009/124—Cooling
Abstract
The invention discloses a roller-hearth-type-transmission powder metallurgy furnace, which relates to the technical field of metallurgy furnaces and comprises a furnace body, wherein a feeding assembly, a dewaxing assembly, a sintering assembly, a slow cooling assembly, a water cooling assembly and a discharging assembly are sequentially arranged in the furnace body along a powder metallurgy process, the sintering assembly comprises a heat-insulation shell, two rows of heating elements are arranged in the heat-insulation shell, a heating channel is formed between the two rows of heating elements, a plurality of silicon carbide roller rods are arranged in the heating channel of the heat-insulation shell, the plurality of silicon carbide roller rods are arranged between the two rows of heating elements in a row, the end parts of the silicon carbide roller rods are coaxially connected with a first driving shaft, one end of the first driving shaft is connected with the silicon carbide roller rods, the other end of the first driving shaft is connected with a first bevel gear, the first driving shaft is connected with the first bevel gear through a coupling, and the first bevel gears correspondingly arranged between two adjacent silicon carbide roller rods are in meshed connection through a second bevel gear. The invention has good transmission efficiency improvement.
Description
Technical Field
The invention relates to the technical field of metallurgical furnaces, in particular to a roller-hearth-type-transmission powder metallurgical furnace.
Background
At present, in the domestic powder metallurgy industry, the sintering equipment mainly comprises a mesh belt furnace and a boat pushing furnace, and the two furnaces have various advantages, such as high mesh belt furnace yield and convenient operation; the boat pusher furnace can sinter a height Wen Chanpin (1300 °).
However, both oven types suffer from fatal drawbacks: when the mesh belt transmission mode is adopted, the mesh belt is limited by the quality of the mesh belt and is a consumable product, and the mesh belt is easy to deform or damage after bearing the high-temperature environment in the high-temperature furnace, so that the transmission efficiency is improved well, and therefore, the roller-hearth type transmission powder metallurgy furnace is provided.
Disclosure of Invention
The application provides a roller bottom type transmission powder metallurgy furnace, which has good transmission efficiency improvement.
The application provides a roller bottom type driven powder metallurgy furnace, adopts following technical scheme:
the utility model provides a roller bottom type driven powder metallurgy furnace, includes the furnace body, just be equipped with feeding subassembly, dewaxing subassembly, sintering subassembly, slow cooling subassembly, water-cooling subassembly and ejection of compact subassembly in proper order along the powder metallurgy flow in the furnace body, sintering subassembly includes heat preservation casing, heat preservation casing's inside is equipped with two rows of heating elements, two rows form heating passageway between the heating element, be equipped with a plurality of carborundum roller stick in the heating passageway of heat preservation casing, a plurality of carborundum roller stick is arranged in row between two rows of heating element, carborundum roller stick's tip coaxial coupling has first drive shaft, carborundum roller stick is connected to the one end of first drive shaft, the other end of first drive shaft is connected with first helical gear, through the coupling joint between first drive shaft and the first helical gear, through second helical gear meshing connection between two adjacent carborundum roller sticks correspond the first helical gear that sets up, arbitrary first coaxial coupling in driving motor locates the heat preservation casing.
By adopting the technical scheme, the limitation of the mesh belt material leads to the fact that the highest temperature of the traditional powder metallurgy furnace can only reach 1150 degrees, and the silicon carbide has excellent high temperature resistance by taking a plurality of silicon carbide rollers as a transmission mode, so that the stable performance can be maintained in a high temperature environment; the silicon carbide carrier roller can bear the working condition in the high-temperature furnace and is not easy to deform or damage; thereby having good improvement of transmission efficiency.
Preferably, the inside of heat preservation casing is equipped with integrated box, the inside of integrated box is equipped with a plurality of axle head sealing member, the outside of first drive shaft is located to the axle head sealing member and is close to first helical gear.
By adopting the technical scheme, the shaft end sealing piece can effectively seal the gap between the integrated box and the heat-preserving shell, and prevent materials from leaking out in the transmission process; thus, the sealing performance of the equipment can be maintained, the powder or other materials are prevented from polluting the environment, and the cleanliness and the sanitation requirements of the production environment are ensured.
Preferably, a shaft water cooling sleeve is arranged in the integrated box, and the silicon carbide roller rod penetrates through the shaft water cooling sleeve.
By adopting the technical scheme, the silicon carbide roller has good heat conducting property, and can effectively conduct heat; the heat on the shaft can be quickly taken away through the cooling water circulation of the shaft water cooling sleeve, so that the temperature of the shaft is reduced; thus, the temperature of the equipment can be effectively controlled, the equipment is prevented from being overheated, and the stable operation of the equipment is improved.
Preferably, the heating element comprises a plurality of recrystallized silicon carbide rollers, and the plurality of recrystallized silicon carbide rollers are positioned on the same horizontal plane.
By adopting the technical scheme, the plurality of recrystallized silicon carbide rollers are positioned on the same horizontal plane, so that the heated heat source can be uniformly distributed on the whole horizontal plane; therefore, the object to be heated can be uniformly heated, the local overhigh or overlow temperature is avoided, and the heating uniformity and consistency are improved.
Preferably, the axial surface of the silicon carbide roller is provided with a plurality of concave parts, the concave parts are distributed around the central axis of the silicon carbide roller at equal angles, and the section of the concave parts is in a trapezoid structure.
By adopting the technical scheme, the effective area of the axial surface of the silicon carbide roller can be increased due to the existence of the concave part; the trapezoidal structure of the depressions may increase the surface area of the shaft compared to a smooth shaft surface, thereby increasing the contact area with the surrounding medium; this helps to accelerate heat transfer and cooling effects and improves heat dissipation efficiency.
Preferably, the dewaxing subassembly includes dewaxing casing, be equipped with the guide passageway in the dewaxing casing, the top of dewaxing casing is equipped with flat flame nozzle, flat flame nozzle injection direction is equipped with the grid tray, the grid tray is located the material passageway of saying, the downside of grid tray is equipped with the stainless steel roller row that is used for the guide, stainless steel roller row is in same horizontal plane with the carborundum roller stick.
By adopting the technical scheme, the dewaxing component comprises a dewaxing shell, a material guide channel, a flat flame nozzle, a grid plate and a stainless steel roller row; the design and arrangement of the components can ensure that the wax mould is heated uniformly and flows smoothly in the dewaxing process; thereby effectively achieving the purpose of dewaxing the wax mould.
Preferably, the feeding assembly comprises a feeding platform, a feeding roller row is arranged in the feeding platform, and the feeding roller row and the stainless steel roller row are positioned on the same horizontal plane.
By adopting the technical scheme, the design scheme that the feeding roller row and the stainless steel roller row are positioned on the same horizontal plane can provide a stable feeding process, simplify the operation, improve the working efficiency and ensure the consistency and quality of product processing.
Preferably, the stainless steel roller row comprises a plurality of second carrier rollers, one end of each second carrier roller is coaxially connected with a second driving shaft, one end of each second driving shaft is connected with one end of each second carrier roller, the other end of each second driving shaft is connected with a flat gear, a plurality of transmission chains are meshed on the outer sides of the flat gears, an output end of each driving motor is coaxially connected to one side surface of each flat gear, and each driving motor is arranged in the dewaxing shell.
By adopting the technical scheme, the structure of the flat gear and the transmission chain is adopted, so that the power of the driving motor can be effectively transmitted to the roller row; the transmission mode has the characteristics of high transmission efficiency and high reliability, can ensure that the roller row runs stably and efficiently during working, adopts the design of a transmission chain, and can adjust the position of the flat gear according to the requirement, thereby flexibly adjusting the speed and the steering of the stainless steel roller row; thus being capable of adapting to different process requirements or production requirements under specific working environments.
Preferably, a plurality of protruding fillets are arranged on the outer surface of the second carrier roller, and the cross section of each protruding fillet is in a trapezoid structure.
By adopting the technical scheme, the contact area between the second carrier roller and the raw material or the workpiece can be increased by the raised fillets, so that the friction force is increased; thus, the stability and the reliability of transmission can be improved, and raw materials or workpieces are prevented from sliding or shifting in the running process; the convex design of the fillets can increase the rigidity and stability of the second carrier roller; in the running process, the fillets play a role in reinforcing the structure, reduce the risks of bending and deformation, and improve the overall stability and durability of the roller row.
Preferably, the water cooling assembly comprises a water cooling box body, a water cooling channel is arranged in the water cooling box body, and a net belt transmission piece is arranged in the water cooling channel of the water cooling box body.
By adopting the technical scheme, the water cooling channel in the water cooling box body can cool materials through circulating water, so that heat is effectively taken away; the contact area between water and materials can be increased due to the existence of the mesh belt transmission piece, so that heat conduction is accelerated, and the heat dissipation effect is improved; the inside guipure driving medium that is equipped with of water-cooling channel of water-cooling box, the water-cooling of water-cooling box are the cooling process, need the oxygen content in the strict control stove, and it is relatively poor to consider the roll row drive to need punch, so adopts stainless steel guipure driving medium as the drive in a large number of hole leakproofness.
In summary, the present application has the following beneficial effects:
1. the limitation of the mesh belt material leads to that the highest temperature of the traditional powder metallurgy furnace can only reach 1150 degrees, while the silicon carbide has excellent high temperature resistance by taking a plurality of silicon carbide rollers as a transmission mode, and can keep stable performance in a high temperature environment; the silicon carbide carrier roller can bear the working condition in the high-temperature furnace and is not easy to deform or damage; thereby having good improvement of transmission efficiency.
Drawings
FIG. 1 is a schematic view showing the overall structure of a powder metallurgy furnace in the present embodiment;
FIG. 2 is a schematic view showing the overall structure of a front view section of the furnace body in the present embodiment;
FIG. 3 is a schematic view of an exploded partial structure between the integration box and the first helical gear in the present embodiment;
FIG. 4 is a schematic view of the internal partial structure of the dewaxing assembly according to the present embodiment;
fig. 5 is a schematic view of an exploded structure between the second idler roller and the flat gear in the present embodiment;
fig. 6 is a schematic view of the overall structure of the second idler in this embodiment;
FIG. 7 is a schematic view showing the internal partial structure of the water cooling module in the present embodiment;
reference numerals illustrate: 1. a furnace body; 2. a feed assembly; 201. a feeding platform; 202. a feed roll row; 3. a dewaxing assembly; 301. dewaxing the shell; 302. a flat flame nozzle; 303. a grid plate; 304. stainless steel roller row; 30401. a second idler; 30402. a second drive shaft; 30403. a flat gear; 30404. a drive chain; 30405. a drive motor; 30406. protruding fillets; 4. sintering the assembly; 401. a heat-insulating housing; 402. a heating member; 403. silicon carbide roller bars; 404. a first drive shaft; 405. a first helical gear; 406. a second helical gear; 407. a driving motor; 408. an integration box; 409. a shaft end seal; 4010. a shaft water cooling jacket; 4011. a recessed portion; 5. a slow cooling assembly; 6. a water cooling assembly; 601. a water-cooled tank; 602. a mesh belt transmission member; 7. a discharge assembly;
Detailed Description
The following detailed description of the present application is provided in conjunction with the accompanying drawings, and it is to be understood that the following detailed description is merely illustrative of the application and is not to be construed as limiting the scope of the application, since numerous insubstantial modifications and adaptations of the application will be to those skilled in the art in light of the foregoing disclosure.
The invention discloses a roller-bottom-driven powder metallurgical furnace, which comprises a furnace body 1, wherein a feeding component 2, a dewaxing component 3, a sintering component 4, a slow cooling component 5, a water cooling component 6 and a discharging component 7 are sequentially arranged in the furnace body 1 along the powder metallurgical flow, the sintering component 4 comprises a heat insulation shell 401, two rows of heating elements 402 are arranged in the heat insulation shell 401, a heating channel is formed between the two rows of heating elements 402, a plurality of silicon carbide roller rods 403 are arranged in the heating channel of the heat insulation shell 401, the plurality of silicon carbide roller rods 403 are arranged between the two rows of heating elements 402 in a row, the end part of the silicon carbide roller rod 403 is coaxially connected with a first driving shaft 404, one end of the first driving shaft 404 is connected with the silicon carbide roller rod 403, the other end of the first driving shaft 404 is connected with a first bevel gear 405, the first driving shaft 404 is connected with the first bevel gear 405 through a coupling, the first bevel gears 405 correspondingly arranged between the adjacent two silicon carbide roller rods 403 are in meshed connection through a second bevel gear 406, any one of the first bevel gears 405 is coaxially connected with the output end of a driving motor 407, and the driving motor 407 is arranged in the heat insulation shell 401; the limitation of the mesh belt material leads to that the highest temperature of the traditional powder metallurgy furnace can only reach 1150 degrees, while the silicon carbide has excellent high temperature resistance by taking a plurality of silicon carbide roller rods 403 as a transmission mode, and can keep stable performance in a high temperature environment; the silicon carbide carrier roller can bear the working condition in the high-temperature furnace and is not easy to deform or damage; silicon carbide has better corrosion resistance to most chemical substances, and can keep better stability in corrosive gas or liquid environment; the silicon carbide idler roller can be used in a corrosive atmosphere, so that the service life is prolonged; silicon carbide is a light material and has lower density; compared with a metal material, the silicon carbide carrier roller has light weight, can reduce the load of a bearing and a transmission system, reduce energy consumption and prolong the service life of equipment; silicon carbide has high hardness and is wear-resistant; the silicon carbide carrier roller can reduce abrasion in the transmission process and prolong the service life; silicon carbide has good heat conduction performance, and can rapidly and uniformly transfer heat in the heat transfer process; this is very important for powder metallurgical furnaces, and can improve the stability and uniformity of the temperature inside the furnace; the highest temperature of the furnace chamber is increased, the application range of the process is widened, and the traditional mesh belt furnace needs to replace mesh belts every year, so that the production cost is increased; the silicon carbide roller 403 is used for transmission, and the carrier roller is directly contacted with the material and does not need to be replaced frequently, so that the maintenance cost and the downtime are reduced; the silicon carbide roller 403 is used for transmission, so that continuous production can be realized, and the yield and the production efficiency are improved; moreover, the traditional mesh belt furnace needs to manually load and unload powder, and has complicated operation; the silicon carbide roller 403 is used for transmission, so that automatic powder loading and unloading can be realized, the operation flow is simplified, and the production efficiency is improved; in summary, using the silicon carbide roller 403 as a transmission means instead of the mesh belt transmission means can increase the highest temperature, reduce the cost, increase the yield and efficiency, and simplify the operation flow, thereby improving the overall performance and production efficiency of the powder metallurgy furnace.
As shown in fig. 1, the heating element 402 includes a plurality of recrystallized silicon carbide rollers 403, and the plurality of recrystallized silicon carbide rollers 403 are on the same horizontal plane; the plurality of recrystallized silicon carbide rollers 403 are positioned on the same horizontal plane, so that the heated heat source is uniformly distributed on the whole horizontal plane; therefore, the uniform heating of the heated object can be realized, the local overhigh or overlow temperature is avoided, and the heating uniformity and consistency are improved; and heating is performed by a plurality of recrystallized silicon carbide rollers 403 on the horizontal plane, so that the heating efficiency can be improved; the heating sources heat at the same time, so that heat can be transferred to a heating object more quickly, the heating speed is increased, and the production efficiency is improved; and a plurality of recrystallized silicon carbide rollers 403 are arranged on the same horizontal plane, so that the heating area range can be enlarged; therefore, more objects or objects with larger area can be heated at the same time, and the batchability and the efficiency of heating are improved; in addition, arranging the plurality of recrystallized silicon carbide rollers 403 on the same horizontal plane can enhance the stability of the heating system; in the heating process, all the rollers can be mutually crossed and supplemented, so that the stability of the heating temperature is maintained, and the temperature fluctuation caused by a single heating source is avoided; in general, arranging a plurality of recrystallized silicon carbide rollers 403 on the same horizontal plane can achieve uniformity, efficiency and stability of heating; therefore, the heating efficiency can be improved, the heating range is enlarged, and the requirements on uniformity and consistency of the heating process are met.
As shown in fig. 3, an integrated box 408 is arranged in the heat insulation shell 401, a plurality of shaft end sealing pieces 409 are arranged in the integrated box 408, and the shaft end sealing pieces 409 are arranged on the outer side of the first driving shaft 404 and close to the first bevel gear 405; the shaft end sealing piece 409 can effectively seal the gap between the integrated box 408 and the heat preservation shell 401, and prevent materials from leaking out in the transmission process; thus, the tightness of the equipment can be maintained, the environment pollution caused by powder or other materials is prevented, and the cleanliness and the sanitation requirements of the production environment are ensured; the shaft end sealing piece 409 can prevent dust and impurities from entering the inside of the integrated box 408, so that abrasion and damage of the transmission device are reduced, and the service life of equipment is prolonged; and the installation of axle head seal 409 can reduce friction and resistance between transmission and the external environment to improve transmission efficiency, reduce energy loss, in addition, axle head seal 409 can prevent effectively that the lubricant from leaking out from integrated box 408 is inside, simultaneously also can prevent that external impurity from getting into lubrication system, the quality of protection lubricant, and prolong the life of lubricant, in general, establish the outside of first drive shaft 404 is close to the position of first helical gear 405 with axle head seal 409, can prevent effectively that the material from leaking out and dust from getting into, improve transmission efficiency, simultaneously protection lubricant and transmission, extension equipment's life.
As shown in fig. 3, an axial water-cooling jacket 4010 is arranged inside the integrated box 408, and a silicon carbide roller 403 penetrates through the axial water-cooling jacket 4010; the silicon carbide roller 403 has good heat conduction performance, and can effectively conduct heat out; the heat on the shaft can be quickly taken away through the cooling water circulation of the shaft water cooling sleeve 4010, so that the temperature of the shaft is reduced; the temperature of the equipment can be effectively controlled, the equipment is prevented from overheating, the stable operation of the equipment is improved, and the silicon carbide roller 403 penetrates through the shaft water cooling sleeve 4010 and can play a role in protecting the shaft; in a high temperature environment, the silicon carbide roller 403 can bear high temperature and resist corrosion, so that damage and abrasion to shaft materials are reduced, and the service life of a shaft is prolonged; the temperature of the equipment can be quickly reduced and the production efficiency can be improved through the cooling effect of the shaft water cooling sleeve 4010; the low-temperature working environment can reduce the combustion speed of materials, reduce energy consumption and improve the working speed and the production capacity of equipment; under the high-temperature working condition, the object can undergo dimensional change due to thermal expansion, and stress and deformation are generated on the shaft; the influence of thermal expansion on the shaft can be effectively reduced by using the shaft water cooling jacket 4010 and the silicon carbide roller 403, and the accuracy and stability of the equipment are maintained; in general, the silicon carbide roller 403 penetrates through the shaft water cooling sleeve 4010 to effectively dissipate heat, so that the shaft material is protected, and the production efficiency and the stability of equipment are improved; thus, the service life of the equipment can be prolonged, the energy consumption can be reduced, and the working efficiency and the precision of the equipment can be improved.
As shown in fig. 3, the axial surface of the silicon carbide roller 403 is provided with a plurality of concave parts 4011, the plurality of concave parts 4011 are distributed around the central axis of the silicon carbide roller 403 at equal angles, and the section of the concave parts 4011 is in a trapezoid structure; the presence of the depressions 4011 can increase the effective area of the axial surface of the silicon carbide roller 403; the trapezoidal structure of the recess 4011 can increase the shaft surface area compared to a smooth shaft surface, thereby increasing the contact area with the surrounding medium; this helps to accelerate heat transfer and cooling effects, improving heat dissipation efficiency; and the equiangular distribution of the concave portions 4011 enables the cooling medium to uniformly cover the entire axial surface of the silicon carbide roller 403; the cooling medium can enter the concave portion 4011 more fully and fully contact the surface of the shaft, so that uniform cooling of the shaft is realized; the trapezoid structure of the concave portion 4011 can also increase the contact area between the cooling medium and the silicon carbide roller 403, so that the heat transfer efficiency is improved; and the presence of the depression 4011 can reduce the deformation and damage of the shaft caused by thermal stress; since the concave portion 4011 on the surface of the silicon carbide roller 403 is thinner, deformation caused by thermal expansion can freely occur in the concave portion 4011, and the possibility of stress concentration is reduced, so that the influence of thermal stress on the silicon carbide roller 403 is reduced; the trapezoidal structure of the depression 4011 can facilitate storage and transfer of lubricant; in certain application scenarios, the lubricant can be filled in the concave portion 4011 to form a lubricating film between the silicon carbide roller 403 and other components, so that friction and abrasion are reduced, and the service life of the shaft is prolonged; in general, the axial surface of the silicon carbide roller 403 is provided with a concave portion 4011, and the concave portion 4011 has a trapezoid structure, so that the surface area can be increased, uniform cooling can be realized, thermal stress can be reduced, and lubrication effect can be increased; this may improve heat dissipation efficiency, protect the structural integrity of the shaft, improve the performance and service life of the shaft.
As shown in fig. 4, the dewaxing assembly 3 includes a dewaxing housing 301, a material guiding channel is arranged in the dewaxing housing 301, a flat flame nozzle 302 is arranged at the top of the dewaxing housing 301, a grid plate 303 is arranged in the spraying direction of the flat flame nozzle 302, the grid plate 303 is positioned in the material guiding channel, a stainless steel roller row 304 for guiding materials is arranged at the lower side of the grid plate 303, and the stainless steel roller row 304 and a silicon carbide roller 403 are positioned on the same horizontal plane; dewaxing housing 301 is the main body structure of the entire assembly for receiving wax patterns and providing a guide channel; it is typically made of refractory material capable of withstanding high temperature environments and attack by chemicals, and is provided with a guide channel in the dewaxed casing 301 for guiding the flow of wax liquid in the wax pattern; the design and arrangement of the material guide channels can ensure that the wax liquid can flow uniformly and smoothly in the dewaxing process; the top of the dewaxing shell 301 is provided with a flat flame nozzle 302, and the spraying direction is provided with a grid plate 303; the arrangement of the nozzle and the grid plate 303 can realize uniform and continuous heating of the wax pattern; grid 303 is positioned within the guide channel for directing the flow of wax fluid through the wax pattern; the stainless steel roller row 304 is positioned at the lower side of the grid plate 303 and is positioned on the same horizontal plane with the silicon carbide roller 403, and as the dewaxing area temperature is below 700 ℃, the section has lipid gas which is being decomposed and also has mixed gas of natural gas and air, a roller-shaped arrangement structure made of stainless steel is adopted; by contacting the silicon carbide roller 403, the stainless steel roller row 304 can help to guide the wax liquid to flow uniformly in the wax pattern, thereby realizing uniform heating inside the wax pattern; in general, dewaxing assembly 3 comprises dewaxing housing 301, guide channel, flat flame nozzle 302, grid 303 and stainless steel roll row 304; the design and arrangement of the components can ensure that the wax mould is heated uniformly and flows smoothly in the dewaxing process; thereby effectively achieving the purpose of dewaxing the wax mould.
As shown in fig. 3, the feeding assembly 2 comprises a feeding platform 201, wherein a feeding roller row 202 is arranged in the feeding platform 201, and the feeding roller row 202 and a stainless steel roller row 304 are positioned on the same horizontal plane; the feeding roller row 202 and the stainless steel roller row 304 are positioned on the same horizontal plane, so that raw materials can be ensured to smoothly enter the stainless steel roller row 304 from the feeding platform 201; the alignment design can prevent raw materials from shaking or shifting in the transmission process, and ensures the stability of feeding; and the raw materials do not need to undergo additional height change before entering the stainless steel roller row 304, so that the material transfer resistance and unnecessary energy loss are reduced; the feeding roller row 202 and the stainless steel roller row 304 are positioned on the same horizontal plane, so that the operation of materials is simpler and more convenient; for example, a worker can more easily place the raw materials on the feeding platform 201 smoothly without additional adjustment or control, improving work efficiency; the feeding roller row 202 and the stainless steel roller row 304 are positioned on the same horizontal plane, so that the horizontal position of the raw materials can be ensured to be consistent; thus being beneficial to keeping the consistency and precision of the processing process and improving the quality and consistency of the product; in general, the design of the feed roll row 202 and the stainless steel roll row 304 on the same horizontal plane may provide a stable feed process, simplify operation, improve work efficiency, and ensure consistency and quality of product processing.
As shown in fig. 4 and 5, the stainless steel roller row 304 includes a plurality of second carrier rollers 30401, one end of the second carrier rollers 30401 is coaxially connected with a second driving shaft 30402, one end of the second driving shaft 30402 is connected with one end of the second carrier rollers 30401, the other end of the second driving shaft 30402 is connected with a flat gear 30403, the outer sides of the plurality of flat gears 30403 are meshed with a driving chain 30404, one side surface of any flat gear 30403 is coaxially connected with an output end of a driving motor 30505, and the driving motor 30505 is arranged inside the dewaxing shell 301; the structure of the flat gear 30403 and the transmission chain 30404 can effectively transmit the power of the driving motor 30405 to the roller row; the transmission mode has the characteristics of high transmission efficiency and high reliability, can ensure that the roller row runs stably and efficiently during working, adopts the design of a transmission chain 30404, and can adjust the position of the flat gear 30403 according to the requirement, thereby flexibly adjusting the speed and the steering of the stainless steel roller row 304; thus, the driving system of the whole stainless steel roller row 304 can be realized through coaxial connection in view of the whole production requirements under different process requirements or specific working environments, the cooperative work of all the components can ensure the stability and reliability of the running of the whole roller row, and the possibility of faults and shutdown is reduced.
As shown in fig. 5 and 6, the outer surface of the second carrier roller 30401 is provided with a plurality of protruding fillets 30406, and the cross section of each protruding fillet 30406 is in a trapezoid structure; the raised fillets can increase the contact area between the second carrier roller 30401 and the raw material or the workpiece, and increase the friction force; thus, the stability and the reliability of transmission can be improved, and raw materials or workpieces are prevented from sliding or shifting in the running process; the convex design of the fillets can increase the rigidity and stability of the second carrier roller 30401; in the running process, the fillets play a role in reinforcing the structure, reduce the risks of bending and deformation, and improve the overall stability and durability of the roller row.
As shown in fig. 7, the water cooling assembly 6 includes a water cooling tank 601, a water cooling channel is arranged in the water cooling tank 601, and a mesh belt transmission member 602 is arranged in the water cooling channel of the water cooling tank 601; the water cooling channel in the water cooling box body 601 can cool materials through circulating water, so that heat is effectively taken away; the mesh belt transmission piece 602 can increase the contact area between water and materials, accelerate heat conduction and improve the heat dissipation effect; the inside guipure driving piece 602 that is equipped with of the water-cooling passageway of water-cooling box 601, the water-cooling of water-cooling box 601 is the cooling process, needs the oxygen content in the strict control stove, considers the roller row drive to need punch, and a large amount of hole leakproofness is relatively poor, so adopts stainless steel guipure driving piece 602 as the drive.
Working principle: firstly, raw material powder is sent into a furnace body 1 through a feeding component 2, then dewaxed through a dewaxing component 3, heated and sintered through a sintering component 4, rapidly cooled through a slow cooling component 5, and finally, a sintered workpiece is taken out through a discharging component 7. The process can be circularly operated or continuously operated according to the process requirements so as to realize the forming and sintering treatment of the powder, and finally the required product is obtained.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. The utility model provides a roller hearth type driven powder metallurgy furnace, includes furnace body (1), just be equipped with feeding subassembly (2), dewaxing subassembly (3), sintering subassembly (4), slow cooling subassembly (5), water-cooling subassembly (6) and ejection of compact subassembly (7) in proper order along the powder metallurgy flow in furnace body (1), its characterized in that: the sintering assembly (4) comprises a heat preservation shell (401), two rows of heating pieces (402) are arranged in the heat preservation shell (401), a heating channel is formed between the two rows of heating pieces (402), a plurality of silicon carbide roller rods (403) are arranged in the heating channel of the heat preservation shell (401), a plurality of silicon carbide roller rods (403) are arranged between the two rows of heating pieces (402) in a row, a first driving shaft (404) is coaxially connected to the end part of the silicon carbide roller rods (403), one end of the first driving shaft (404) is connected with the silicon carbide roller rods (403), the other end of the first driving shaft (404) is connected with a first bevel gear (405), the first driving shaft (404) is connected with the first bevel gear (405) through a coupling, the first bevel gears (405) which are correspondingly arranged between every two adjacent silicon carbide roller rods (403) are connected through a second bevel gear (406), any one of the first bevel gears (405) is coaxially connected to the output end of a driving motor (407), and the driving motor (407) is arranged in the heat preservation shell (401).
2. The roller hearth drive powder metallurgy furnace according to claim 1, wherein: the inside of heat preservation casing (401) is equipped with integrated box (408), the inside of integrated box (408) is equipped with a plurality of axle head sealing member (409), the outside of locating first drive shaft (404) and be close to first helical gear (405) are sealed to axle head sealing member (409).
3. The roller hearth drive powder metallurgy furnace according to claim 2, wherein: the inside of integrated box (408) is equipped with axle water cooling jacket (4010), carborundum roller (403) runs through in axle water cooling jacket (4010).
4. The roller hearth drive powder metallurgy furnace according to claim 1, wherein: the heating piece (402) comprises a plurality of recrystallized silicon carbide rollers (403), and the plurality of recrystallized silicon carbide rollers (403) are positioned on the same horizontal plane.
5. The roller hearth drive powder metallurgy furnace according to claim 1, wherein: the axial surface of the silicon carbide roller (403) is provided with a plurality of concave parts (4011), the plurality of concave parts (4011) are distributed around the central axis of the silicon carbide roller (403) at equal angles, and the section of the concave parts (4011) is in a trapezoid structure.
6. The roller hearth drive powder metallurgy furnace according to claim 5 wherein: dewaxing subassembly (3) is including dewaxing casing (301), be equipped with the guide passageway in dewaxing casing (301), the top of dewaxing casing (301) is equipped with flat flame nozzle (302), flat flame nozzle (302) injection direction is equipped with grid tray (303), grid tray (303) are located the material passageway of saying, the downside of grid tray (303) is equipped with stainless steel roller row (304) that are used for the guide, stainless steel roller row (304) are in same horizontal plane with carborundum roller stick (403).
7. The roller hearth drive powder metallurgy furnace according to claim 6 wherein: the feeding assembly (2) comprises a feeding platform (201), a feeding roller row (202) is arranged in the feeding platform (201), and the feeding roller row (202) and the stainless steel roller row (304) are located on the same horizontal plane.
8. The roller hearth drive powder metallurgy furnace according to claim 6 wherein: stainless steel roller row (304) include a plurality of second bearing roller (30401), the one end coaxial coupling of second bearing roller (30401) has second drive shaft (30402), the one end of second drive shaft (30402) is connected the one end of second bearing roller (30401), the other end of second drive shaft (30402) is connected with flat gear (30403), a plurality of the outside meshing of flat gear (30403) is equipped with drive chain (30404), arbitrary coaxial coupling has the output of driving motor (30405) on the one side of flat gear (30403), driving motor (30405) locates the inside of dewaxing casing (301).
9. The roller hearth drive powder metallurgy furnace according to claim 8 wherein: the outer surface of the second carrier roller (30401) is provided with a plurality of protruding fillets (30406), and the cross section of each protruding fillets (30406) is of a trapezoid structure.
10. The roller hearth drive powder metallurgy furnace according to claim 1, wherein: the water cooling assembly (6) comprises a water cooling box body (601), a water cooling channel is arranged in the water cooling box body (601), and a net belt transmission piece (602) is arranged in the water cooling channel of the water cooling box body (601).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311438933.4A CN117444204A (en) | 2023-10-30 | 2023-10-30 | Roller bottom type driven powder metallurgy furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311438933.4A CN117444204A (en) | 2023-10-30 | 2023-10-30 | Roller bottom type driven powder metallurgy furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117444204A true CN117444204A (en) | 2024-01-26 |
Family
ID=89592574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311438933.4A Pending CN117444204A (en) | 2023-10-30 | 2023-10-30 | Roller bottom type driven powder metallurgy furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117444204A (en) |
-
2023
- 2023-10-30 CN CN202311438933.4A patent/CN117444204A/en active Pending
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