CN109556409B - High-temperature sintering device for rapid sintering and sintering process method thereof - Google Patents
High-temperature sintering device for rapid sintering and sintering process method thereof Download PDFInfo
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- CN109556409B CN109556409B CN201811323461.7A CN201811323461A CN109556409B CN 109556409 B CN109556409 B CN 109556409B CN 201811323461 A CN201811323461 A CN 201811323461A CN 109556409 B CN109556409 B CN 109556409B
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- 238000005245 sintering Methods 0.000 title claims abstract description 180
- 238000000034 method Methods 0.000 title abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 92
- 230000017525 heat dissipation Effects 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 239000011261 inert gas Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 230000001681 protective effect Effects 0.000 claims description 9
- 239000000110 cooling liquid Substances 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 230000005499 meniscus Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000463 material Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
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- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000009270 solid waste treatment Methods 0.000 description 1
- 210000004127 vitreous body Anatomy 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/02—Supplying steam, vapour, gases, or liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/0003—Linings or walls
- F27D1/0033—Linings or walls comprising heat shields, e.g. heat shieldsd
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/02—Ohmic resistance heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/04—Circulating atmospheres by mechanical means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/02—Supplying steam, vapour, gases, or liquids
- F27D2007/023—Conduits
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a high-temperature sintering device for rapid sintering and a sintering process method thereof, wherein the high-temperature sintering device comprises the following steps: the device comprises a high-temperature sintering chamber, wherein a plurality of supporting plates are clamped in the high-temperature sintering chamber; a sintered product is placed on the supporting plate; a heating resistance plate is arranged between the adjacent support plates, and the heating resistance plate and the support plates are arranged in parallel; and the bottom of the high-temperature sintering chamber is provided with an air inlet pipeline for introducing inert gas, and the top of the high-temperature sintering chamber is provided with an air outlet pipeline. The air-cooled circulation heat dissipation device is characterized by also comprising an air-cooled circulation heat dissipation device and a liquid-cooled circulation heat dissipation structure, wherein an air inlet pipe of the air-cooled circulation heat dissipation device is arranged at the top of the high-temperature sintering chamber, and an air outlet pipe of the air-cooled circulation heat dissipation device is arranged at the bottom of the high-temperature sintering chamber; the liquid cooling circulation heat dissipation structure comprises a cooling pipe, and the cooling pipe surrounds the outer surface of the high-temperature sintering chamber. The cooling effect of two kinds of different modes cools off the heat dissipation to the sintered product, can reduce the heat dissipation latency of sintered product, has improved the output efficiency of sintered product.
Description
Technical Field
The invention relates to the technical field of metal sintering, in particular to a high-temperature sintering device for rapid sintering and a sintering process method thereof.
Background
Sintering in a sintering device refers to the process of converting powdery materials into compact bodies, and is a traditional process. The technology has long been used for producing ceramics, powder metallurgy, refractory materials, ultrahigh temperature materials, industrial solid waste treatment and the like. Generally, after the powder is shaped, the dense body obtained by sintering is a polycrystalline material whose microstructure is composed of crystals, vitreous bodies and pores. The sintering process directly affects the grain size, pore size and grain boundary shape and distribution in the microstructure, thereby affecting the performance of the material.
The speed of the sintering device for sintering the product directly influences the manufacturing efficiency of the sintering product, thereby influencing the product competitiveness of the sintering product, and for this reason, the furnace outlet speed of the sintering device is an important factor influencing the quality of the sintering device.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a high-temperature sintering device for rapid sintering and a sintering process method thereof, which can reduce the sintering time and cooling time of a sintered product and improve the discharging efficiency of the sintered product.
The technical scheme is as follows: in order to achieve the above object, the present invention provides a high temperature sintering apparatus for rapid sintering, comprising: the device comprises a high-temperature sintering chamber, wherein a plurality of parallel supporting plates are uniformly clamped in the high-temperature sintering chamber from top to bottom, and the supporting plates are horizontally arranged at equal intervals; a sintered product is placed on the supporting plate; a heating resistance plate is arranged between the adjacent support plates, and the heating resistance plate and the support plates are arranged in parallel; an air inlet pipeline for introducing inert gas is arranged at the bottom of the high-temperature sintering chamber, one end of the air inlet pipeline, which is far away from the high-temperature sintering chamber, is communicated with an air storage tank, an air outlet pipeline is arranged at the top of the high-temperature sintering chamber, and one end of the air outlet pipeline, which is far away from the high-temperature sintering chamber, is communicated with an air inlet of a high-pressure air extraction pump; the inert protective gas is filled in the high-temperature sintering chamber, so that the air in the high-temperature sintering chamber can be exhausted completely, and the sintered product cannot be changed in chemical property during normal sintering.
The air-cooled circulation heat dissipation device is characterized by also comprising an air-cooled circulation heat dissipation device and a liquid-cooled circulation heat dissipation structure, wherein an air inlet pipe of the air-cooled circulation heat dissipation device is arranged at the top of the high-temperature sintering chamber, and an air outlet pipe of the air-cooled circulation heat dissipation device is arranged at the bottom of the high-temperature sintering chamber; the liquid cooling circulation heat dissipation structure comprises a cooling pipe, and the cooling pipe surrounds the outer surface of the high-temperature sintering chamber. The cooling effect that is provided with two kinds of different modes cools off the heat dissipation to the sintered product, can reduce the heat dissipation latency of sintered product.
Further, the air inlet end of the air inlet pipe of the air-cooled circulating heat dissipation device is arranged at the top of the right side in the high-temperature sintering chamber; the air cooling circulation heat dissipation device comprises a plurality of square fins which are arranged in parallel, and the square fins are aluminum sheets; the air inlet pipe spirally passes through the inner part of the square fin back and forth, an air outlet is formed in the right side of the square fin, and a heat radiation fan for blowing air to the square fin is arranged on the left side of the square fin; the air inlet pipe is provided with an air pump for providing air circulation power; the air cooling circulating heat dissipation device comprises a cold water tank and a water cooling pipe immersed in the cold water tank, wherein the air outlet end of the air inlet pipe is communicated with the air inlet end of the water cooling pipe, and the air outlet end of the water cooling pipe is communicated with the air outlet pipe; the inner diameter of the water-cooling pipe is respectively larger than the inner diameters of the air inlet pipe and the air outlet pipe; and the air outlet end of the air outlet pipe of the air-cooled selected heat dissipation structure is arranged at the bottom of the left side in the high-temperature sintering chamber. The inert gas in the high-temperature sintering chamber is circularly radiated, so that the cooling rate of the sintered product is increased, and the discharging time of the sintered product is shortened.
Furthermore, the sintering furnace further comprises a sintering furnace outer box, a cooling pipe is arranged between the sintering furnace outer box and the high-temperature sintering chamber, and the cooling pipe is arranged on the outer surface wall of the high-temperature sintering chamber in a surrounding manner; a cooling box is arranged outside the sintering furnace, and cooling liquid is filled in the cooling box; the cooling tube is characterized in that the water inlet end and the water outlet end of the cooling tube are respectively arranged in the cooling box, a water suction pump is arranged at the water inlet end of the cooling tube, and the water suction pump is immersed in the bottom of the cooling box. The water pump provides power to make the cooling liquid in the cooling pipe circularly flow in the cooling pipe, so that the cooling effect of the high-temperature sintering chamber is better.
Furthermore, the outer surface wall of the high-temperature sintering chamber is arranged in a cylindrical shape, the cross section of the cooling pipe is arranged in a meniscus shape, and the inwards concave cambered surface side of the cooling pipe is tightly attached to the outer surface wall of the high-temperature sintering chamber; the cooling pipe is made of high-temperature-resistant heat-conducting metal materials. The cooling pipe is more fully contacted with the outer wall of the high-temperature sintering chamber, so that the cooling liquid in the cooling pipe can absorb the heat on the high-temperature sintering chamber conveniently.
Furthermore, a plurality of clamping grooves are oppositely formed in the left side wall and the right side wall in the high-temperature sintering chamber and are horizontally arranged relative to the clamping grooves; the supporting plate comprises inserting columns arranged at the left end and the right end, the inserting columns are matched with the clamping grooves, and the inserting columns are arranged in the clamping grooves in a sliding mode along the length direction of the clamping grooves; a rubber pad is arranged between the clamping groove and the inserting column; the lower surface of the inserting column is provided with an arc-shaped limiting block, and the clamping groove is provided with a limiting groove at a corresponding position; the inserted column slides inwards along the length direction of the clamping groove, and when the limiting block enters the limiting groove, the supporting plate is clamped in the high-temperature sintering chamber. The arc-shaped limiting blocks are clamped in the limiting grooves of the clamping grooves, so that the supporting plate cannot move in a high-temperature sintering chamber in the sintering process, and the normal sintering of a sintered product is guaranteed.
Furthermore, the supporting plate is arranged in a hollow manner from top to bottom, and a temperature sensor is arranged on the upper surface of the supporting plate; the supporting plate also comprises a supporting block, and sintered products are supported on the supporting block and are arranged right above the supporting block; the upper surface of the supporting block is smaller than the bottom surface of the sintered product, and the distance from the edge of the upper surface of the supporting block to the edge of the bottom surface of the sintered product is 2 mm; and anti-sticking powder is arranged on the upper surface of the supporting block. The upper surface of the supporting block is smaller than the bottom surface of the sintered product, so that the sintered product is partially suspended and is convenient to take down after the sintered product is sintered.
Furthermore, the heating resistance plate comprises heating nets arranged at the upper end and the lower end and a support plate arranged in the middle, the heating nets at the upper end and the lower end are supported and isolated by the support plate, and the support plate is made of a heat-insulating material; temperature regulators are arranged at two ends of the heating net, and connecting blocks are arranged on the end faces of the temperature regulators; the heating net is wavy, and the heating net is woven by the heater strip. Through being provided with two-layer heating net, can heat the sintering product upper and lower two sides in the backup pad simultaneously, improve the sintering rate of sintering product.
Furthermore, the sintering furnace outer box comprises a metal protective shell and an inner heat insulation layer, and the inner heat insulation layer is arranged on the inner surface of the metal protective shell in a clinging mode. The inner heat insulation layer is arranged to prevent high temperature in the high-temperature sintering chamber from diffusing to the external environment to affect the normal work of operators.
A high-temperature sintering process method for rapid sintering,
firstly, placing a sintered product on a support plate and inserting the support plate into a high-temperature sintering chamber;
secondly, exhausting air in the high-temperature sintering chamber and filling inert gas in the high-temperature sintering chamber;
thirdly, sintering the sintered product by heating the resistance plate;
fourthly, cooling and radiating the sintered product through an air cooling circulation radiating device and a liquid cooling circulation radiating structure;
and fifthly, taking out the sintered product after sintering.
Has the advantages that: according to the high-temperature sintering device for rapid sintering and the sintering process method thereof, the sintering protective gas is arranged in the high-temperature sintering chamber, so that the chemical properties of a sintered product can be changed in the sintering process; the cooling effect of two different modes is set to cool and radiate the sintered product, so that the heat radiation waiting time of the sintered product can be reduced, and the output rate of the sintered product is improved; the sintered product is heated in a short distance by the heating resistance plate, so that the sintering process of the sintered product can be shortened, and the output rate of the sintered product is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a support plate structure of the present invention;
FIG. 3 is a schematic structural view of a support plate and a sintered product of the present invention;
FIG. 4 is an enlarged partial schematic view of FIG. 1 of the present invention;
FIG. 5 is a schematic structural view of a heating resistor plate according to the present invention;
FIG. 6 is a schematic structural diagram of an air-cooled circulation heat dissipation device according to the present invention;
FIG. 7 is a schematic cross-sectional view of a cooling tube according to the present invention;
FIG. 8 is a schematic structural view of a high-temperature sintering chamber according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in the attached drawings 1-8, a high-temperature sintering device for rapid sintering comprises: the sintering device comprises a high-temperature sintering chamber 1, wherein a plurality of parallel supporting plates 2 are uniformly clamped in the high-temperature sintering chamber 1 from top to bottom, and the supporting plates 2 are horizontally arranged at equal intervals; a sintered product 24 is placed on the support plate; a heating resistance plate 3 is arranged between the adjacent support plates 2, and the heating resistance plate 3 is arranged in parallel with the support plates 2; an air inlet pipeline for introducing inert gas is arranged at the bottom of the high-temperature sintering chamber 1, one end of the air inlet pipeline, which is far away from the high-temperature sintering chamber 1, is communicated with an air storage tank, an air outlet pipeline is arranged at the top of the high-temperature sintering chamber 1, and one end of the air outlet pipeline, which is far away from the high-temperature sintering chamber 1, is communicated with an air inlet of a high-pressure air pump 7; the air inlet pipeline and the air outlet pipeline are both provided with electromagnetic valves; by filling the inert protective gas in the high-temperature sintering chamber 1, the air in the high-temperature sintering chamber 1 can be exhausted completely, so that the chemical properties of the sintered product 24 are not changed during normal sintering.
The sintering furnace further comprises an air-cooling circulation heat dissipation device 4 and a liquid-cooling circulation heat dissipation structure, wherein an air inlet pipe 41 of the air-cooling circulation heat dissipation device 4 is arranged at the top of the high-temperature sintering chamber 1, and an air outlet pipe 56 of the air-cooling circulation heat dissipation device is arranged at the bottom of the high-temperature sintering chamber 1; the liquid cooling circulation heat dissipation structure comprises a cooling pipe 51, and the cooling pipe 51 surrounds the outer surface of the high-temperature sintering chamber 1. The cooling effect of two different modes is set to cool and radiate the sintered product 24, so that the waiting time for radiating the sintered product 24 can be reduced.
The air inlet end of the air inlet pipe 41 of the air-cooling circulation heat dissipation device 4 is arranged at the top of the right side in the high-temperature sintering chamber 1, the air outlet end of the air outlet pipe 46 of the air-cooling selected heat dissipation structure 4 is arranged at the bottom of the left side in the high-temperature sintering chamber 1, and the air inlet pipe 41 and the air outlet pipe 46 are respectively arranged at different positions above and below the high-temperature sintering chamber 1, so that the inert gas in the high-temperature sintering chamber 1 can fully enter the air-cooling circulation heat dissipation device 4 for cooling, and the quick heat dissipation of the sintering product 24 is facilitated; the air cooling circulation heat dissipation device 4 comprises a plurality of square fins 42 which are arranged in parallel, the square fins are aluminum sheets, and the heat transfer effect of the aluminum sheets is better; the air inlet pipe 41 spirally passes through the inside of the square fin 42 back and forth, the air outlet 40 is arranged on the right side of the square fin 42, the heat dissipation fan 43 blowing air to the square fin 42 is arranged on the left side of the square fin 42, and heat on the square fin 42 is blown out of the air cooling circulation device 4 through the heat dissipation fan 43 by transferring the temperature of the inert gas in the air inlet pipe 41 to the square fin 42; the air inlet pipe 41 is provided with an air pump 44 for providing air circulation power; the air-cooled circulating heat dissipation device 4 comprises a cold water tank 451 and a water-cooled pipe 451 immersed in the cold water tank 451, wherein the air outlet end of the air inlet pipe 41 is communicated with the air inlet end of the water-cooled pipe 451, and the air outlet end of the water-cooled pipe 451 is communicated with the air outlet pipe 46; the inner diameter of the water cooling pipe 451 is respectively larger than the inner diameters of the air inlet pipe 41 and the air outlet pipe 46, the flow rate of the inert gas entering the water cooling pipe 451 is reduced, the time of the inert gas in the cold water tank 41 is prolonged, and the temperature of the inert gas is favorably reduced.
The sintering furnace further comprises a sintering furnace outer box 8, a cooling pipe 51 is arranged between the sintering furnace outer box 8 and the high-temperature sintering chamber 1, and the cooling pipe 51 is arranged on the outer surface wall of the high-temperature sintering chamber 1 in a surrounding mode; a cooling box 6 is arranged outside the sintering furnace, and cooling liquid 61 is filled in the cooling box 6; the water inlet end and the water outlet end of the cooling pipe 51 are respectively arranged in the cooling box 6, the water inlet end of the cooling pipe 51 is provided with a water suction pump 50, and the water suction pump 50 is arranged at the bottom of the cooling box 6 in an immersed mode. The cooling liquid 61 in the cooling pipe 51 is circulated in the cooling pipe 51 by the power supplied by the water pump 50, so that the cooling effect of the high-temperature sintering chamber 1 is better.
The outer surface wall of the high-temperature sintering chamber 1 is arranged in a cylindrical shape, the cross section of the cooling pipe 51 is arranged in a meniscus shape, the inward concave cambered surface 511 side of the cooling pipe 51 is tightly attached to the outer surface wall of the high-temperature sintering chamber 1, so that the contact area between the pipe wall of the cooling pipe 51 and the outer wall of the high-temperature sintering chamber 1 is larger, the contact between the cooling liquid 61 in the cooling pipe 51 and the high-temperature sintering furnace is larger, and more heat on the high-temperature sintering chamber 1 is absorbed; the cooling pipe 51 is made of a high-temperature-resistant heat-conducting metal material, and is beneficial to heat transfer.
A plurality of clamping grooves 11 are oppositely arranged on the left side wall and the right side wall in the high-temperature sintering chamber 1, and are horizontally arranged relative to the clamping grooves 11; the supporting plate 2 comprises inserting columns 21 arranged at the left end and the right end, the inserting columns 21 are matched with the clamping grooves 11, and the inserting columns 21 are arranged in the clamping grooves 11 in a sliding mode along the length direction of the clamping grooves 11; a rubber pad 110 is arranged between the clamping groove 11 and the inserting column 21, and the rubber pad 110 can prevent the clamping groove 11 from being worn; the lower surface of the inserting column 21 is provided with an arc-shaped limiting block 211, and the corresponding position of the clamping groove 11 is provided with a limiting groove 111; the inserting column 21 slides inwards along the length direction of the clamping groove 11, and when the limiting block 211 enters the limiting groove 111, the supporting plate 2 is clamped in the high-temperature sintering chamber 1. The arc-shaped limiting block 211 is clamped in the limiting groove 111 of the clamping groove 11, so that the supporting plate 2 cannot move in the high-temperature sintering chamber 1 in the sintering process, and the normal sintering of the sintered product 24 is ensured.
The supporting plate 2 is arranged in a hollow manner from top to bottom, so that heat below the supporting plate 2 can be transferred to the sintered product 24 above the supporting plate; a temperature sensor is arranged on the upper surface of the supporting plate 2; the supporting plate 2 further comprises a supporting block 23, a sintered product 24 is supported on the supporting block 23, and the sintered product 24 is arranged right above the supporting block 23; the upper surface of the supporting block 23 is smaller than the bottom surface of the sintered product 24, the distance from the edge of the upper surface of the supporting block 23 to the edge of the bottom surface of the sintered product 24 is 2mm, and the upper surface of the supporting block 23 is smaller than the bottom surface of the sintered product 24, so that the sintered product 24 is partially suspended and is convenient to take down after sintering of the sintered product 24 is completed; and anti-sticking powder is arranged on the upper surface of the supporting block 23, so that the sintered product 24 can be taken down after being sintered.
The heating resistance plate 3 comprises heating nets 31 arranged at the upper end and the lower end and a support plate 32 arranged in the middle, the heating nets 31 at the upper end and the lower end are supported and isolated by the support plate 32, and the support plate 32 is made of heat-insulating materials; temperature regulators 33 are arranged at two ends of the heating net 31, connecting blocks 34 are arranged on the end faces of the temperature regulators 33, and the connecting blocks 34 are connected and arranged on the side wall of the high-temperature sintering chamber 1; the heating net 31 is arranged in a wave shape, so that the surface area of the heating net 31 in a unit space is larger, the heating temperature of the heating net 31 is high, and the heating net 31 is formed by weaving heating wires. The resistance heating plate 3 heats from the upper and lower surfaces of the sintered product 24 at the same time, thereby improving the sintering rate of the sintered product 24 and reducing the sintering time of the sintered product 24.
The sintering furnace outer box 8 comprises a metal protective shell and an inner heat insulation layer, and the inner heat insulation layer is tightly attached to the inner surface of the metal protective shell. The inner heat insulation layer is arranged to prevent high temperature in the high-temperature sintering chamber from diffusing to the external environment to affect the normal work of operators.
The high-temperature sintering device is also provided with a controller.
A high-temperature sintering process method for rapid sintering comprises the following steps: a layer of anti-sticking powder is scattered on the supporting block 23 of the supporting plate 2, then the sintered product 24 is placed on the supporting block 23, the supporting plate 2 and the sintered product 24 thereon are inserted into the high-temperature sintering chamber 1 along the direction of the clamping groove 11, the arc-shaped limiting block 211 on the to-be-inserted column 21 is clamped in the limiting groove of the clamping groove 11, and the clamping of the supporting plate 2 is completed at this time; closing a sintering furnace door, opening an electromagnetic valve on an air outlet pipeline, starting a high-pressure air pump 7, evacuating air in the high-temperature sintering chamber 1 through the high-pressure air pump 7, closing the electromagnetic valve on the air outlet pipeline, opening the electromagnetic valve on the air inlet pipeline to enable inert gas to fill the high-temperature sintering chamber 1, and closing the electromagnetic valve on the air inlet pipeline; the heating resistance plate 3 is controlled to be electrified and heated by the controller, when the temperature on the supporting plate 2 reaches the induction value of the temperature inductor, the temperature inductor generates an electric signal to the controller, the controller generates an electric signal to the heating resistance heating plate 3, the heating resistance plate 3 stops heating, and the temperature on the supporting plate 2 is always maintained in a required temperature interval to sinter a sintered product; after sintering is finished, the heating resistance plate 3 is powered off, and the water suction pump 50 and the air suction pump 44 are started at the same time, so that the inert gas is cooled and radiated in the air-cooled circulation radiating device 4, and the cooling liquid 61 in the cooling pipe 51 circularly absorbs heat of the high-temperature sintering chamber 1; and when the temperature in the high-temperature sintering chamber 1 is radiated to a set value, stopping the water suction pump 50 and the air suction pump 46, opening the sintering furnace door, and taking out the sintered product.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (7)
1. The utility model provides a high temperature sintering device of quick sintering which characterized in that: the device comprises a high-temperature sintering chamber (1), wherein a plurality of parallel supporting plates (2) are uniformly clamped in the high-temperature sintering chamber (1) from top to bottom, and the supporting plates (2) are horizontally arranged at equal intervals; a sintered product (24) is placed on the support plate; a heating resistance plate (3) is arranged between the adjacent support plates (2), and the heating resistance plate (3) and the support plates (2) are arranged in parallel; an air inlet pipeline for introducing inert gas is arranged at the bottom of the high-temperature sintering chamber (1), one end of the air inlet pipeline, which is far away from the high-temperature sintering chamber (1), is communicated with an air storage tank, an air outlet pipeline is arranged at the top of the high-temperature sintering chamber (1), and one end of the air outlet pipeline, which is far away from the high-temperature sintering chamber (1), is communicated with an air inlet of a high-pressure air pump (7);
the sintering furnace is characterized by further comprising an air-cooling circulating heat dissipation device (4) and a liquid-cooling circulating heat dissipation structure, wherein an air inlet pipe (41) of the air-cooling circulating heat dissipation device (4) is arranged at the top of the high-temperature sintering chamber (1), and an air outlet pipe (46) of the air-cooling circulating heat dissipation device is arranged at the bottom of the high-temperature sintering chamber (1); the liquid cooling circulation heat dissipation structure comprises a cooling pipe (51), wherein the cooling pipe (51) surrounds the outer surface of the high-temperature sintering chamber (1);
the air inlet end of an air inlet pipe (41) of the air cooling circulation heat dissipation device (4) is arranged at the top of the right side in the high-temperature sintering chamber (1); the air cooling circulation heat dissipation device (4) comprises a plurality of square fins (42) which are arranged in parallel, wherein the square fins are aluminum sheets; the air inlet pipe (41) penetrates through the square fins (42) in a spiral manner back and forth, the air outlet (40) is formed in the right sides of the square fins (42), and the heat dissipation fan (43) blowing air to the square fins (42) is arranged on the left sides of the square fins (42); the air inlet pipe (41) is provided with an air pump (44) for providing air circulation power; the air-cooled circulating heat dissipation device (4) comprises a cold water tank (451) and a water-cooled pipe (451) immersed in the cold water tank (451), the air outlet end of the air inlet pipe (41) is communicated with the air inlet end of the water-cooled pipe (451), and the air outlet end of the water-cooled pipe (451) is communicated with the air outlet pipe (46); the inner diameter of the water-cooling pipe (451) is respectively larger than the inner diameters of the air inlet pipe (41) and the air outlet pipe (46); the air outlet end of the air outlet pipe (46) of the air-cooled selected heat dissipation structure (4) is arranged at the bottom of the left side in the high-temperature sintering chamber (1).
2. The high-temperature sintering device for rapid sintering according to claim 1, wherein: the sintering furnace further comprises a sintering furnace outer box (8), a cooling pipe (51) is arranged between the sintering furnace outer box (8) and the high-temperature sintering chamber (1), and the cooling pipe (51) is arranged on the outer surface wall of the high-temperature sintering chamber (1) in a surrounding mode; a cooling box (6) is arranged outside the sintering furnace, and cooling liquid (61) is filled in the cooling box (6); the water inlet end and the water outlet end of the cooling pipe (51) are respectively arranged in the cooling box (6), the water inlet end of the cooling pipe (51) is provided with a water suction pump (50), and the water suction pump (50) is immersed and arranged at the bottom of the cooling box (6).
3. The high-temperature sintering device for rapid sintering according to claim 2, wherein: the outer surface wall of the high-temperature sintering chamber (1) is arranged in a cylindrical shape, the cross section of the cooling pipe (51) is arranged in a meniscus shape, and the side of the inwards concave cambered surface (511) of the cooling pipe (51) is tightly attached to the outer surface wall of the high-temperature sintering chamber (1); the cooling pipe (51) is made of high-temperature-resistant heat-conducting metal materials.
4. The high-temperature sintering device for rapid sintering according to claim 1, wherein: a plurality of clamping grooves (11) are oppositely arranged on the left side wall and the right side wall in the high-temperature sintering chamber (1), and are horizontally arranged relative to the clamping grooves (11); the supporting plate (2) comprises inserting columns (21) arranged at the left end and the right end, the inserting columns (21) are matched with the clamping grooves (11), and the inserting columns (21) are arranged in the clamping grooves (11) in a sliding mode along the length direction of the clamping grooves (11); a rubber pad (110) is arranged between the clamping groove (11) and the inserting column (21); the lower surface of the inserting column (21) is provided with an arc-shaped limiting block (211), and the clamping groove (11) is provided with a limiting groove (111) at a corresponding position; insert post (21) and inwards slide along draw-in groove (11) length direction, enter into spacing recess (111) when stopper (211), backup pad (2) card is in high temperature sintering room (1).
5. The high-temperature sintering device for rapid sintering according to claim 4, wherein: the supporting plate (2) is arranged in a hollow manner from top to bottom, and a temperature sensor is arranged on the upper surface of the supporting plate (2); the supporting plate (2) further comprises a supporting block (23), a sintered product (24) is supported on the supporting block (23), and the sintered product (24) is arranged right above the supporting block (23); the upper surface of the supporting block (23) is smaller than the bottom surface of the sintered product (24), and the distance from the edge of the upper surface of the supporting block (23) to the edge of the bottom surface of the sintered product (24) is 2 mm; and anti-sticking powder is arranged on the upper surface of the supporting block (23).
6. The high-temperature sintering device for rapid sintering according to claim 1, wherein: the heating resistance plate (3) comprises heating nets (31) arranged at the upper end and the lower end and a supporting plate (32) arranged in the middle, the heating nets (31) at the upper end and the lower end are supported and isolated through the supporting plate (32), and the supporting plate (32) is made of heat-insulating materials; temperature regulators (33) are arranged at two ends of the heating net (31), and connecting blocks (34) are arranged on the end faces of the temperature regulators (33); the heating net (31) is arranged in a wave shape, and the heating net (31) is formed by weaving heating wires.
7. The high-temperature sintering device for rapid sintering according to claim 1, wherein: the sintering furnace outer box (8) comprises a metal protective shell and an inner heat insulation layer, and the inner heat insulation layer is tightly attached to the inner surface of the metal protective shell.
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| CN201811323461.7A CN109556409B (en) | 2018-11-08 | 2018-11-08 | High-temperature sintering device for rapid sintering and sintering process method thereof |
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| CN201811323461.7A CN109556409B (en) | 2018-11-08 | 2018-11-08 | High-temperature sintering device for rapid sintering and sintering process method thereof |
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| CN109556409B true CN109556409B (en) | 2020-01-14 |
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| CN202973986U (en) * | 2012-12-11 | 2013-06-05 | 宁波科宁达工业有限公司 | Heat exchanger |
| CN205403462U (en) * | 2016-02-24 | 2016-07-27 | 程伟 | A cooling device and system for soft magnetic ferrite sintering high -temperature gas |
| CN205726471U (en) * | 2016-04-28 | 2016-11-23 | 天津市旭永诚科技有限公司 | A kind of mobile adjustable type electric heating moving electric heating plate |
| CN107760327A (en) * | 2017-09-15 | 2018-03-06 | 萍乡市华星环保工程技术有限公司 | A kind of dry coke quenching process units with interior circulating cooling function |
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Effective date of registration: 20191213 Address after: 063000 Lu Jia Tuo Cun Nan, Guye District, Tangshan City, Hebei Province Applicant after: Tangshan Guoyi Special Steel Co.,Ltd. Address before: 226100 Unit 1 502, No. 21, Central Street, Wanghao Town, Haimen City, Nantong City, Jiangsu Province Applicant before: Cui Xiaoqin |
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