CN2687593Y - High temperature nitriding furnace - Google Patents
High temperature nitriding furnace Download PDFInfo
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- CN2687593Y CN2687593Y CN 200420000377 CN200420000377U CN2687593Y CN 2687593 Y CN2687593 Y CN 2687593Y CN 200420000377 CN200420000377 CN 200420000377 CN 200420000377 U CN200420000377 U CN 200420000377U CN 2687593 Y CN2687593 Y CN 2687593Y
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Abstract
The utility model relates to high temperature nitriding furnace, comprising a furnace shell in which heat-insulating material, a refractory lining, and electric heating material which is distributed in a hearth are filled. A furnace door, an access door, and a vacuum tube are arranged on the furnace shell. One end of the vacuum tube is connected with a vacuum pump, and the other end passes through the heat-insulating material and the refractory lining and is communicated with the hearth, a flow path of air intake and air exhaust at the furnace bottom for delivering compressed air, nitrogen gas and the gas liberating of adobes, a kiln car for placing sintered elements, and the drive device of the kiln car. The sealability of the high temperature nitriding furnace is good; thus, the high temperature nitriding furnace not only can work in vacuum, but also can work under controllable atmospheres. As the furnace bottom spurts out live air, the air in the furnace is distributed more homogeneous than other electric furnaces. As a high resistant warping furnace door and a big movable joint screw nut are adopted, the on-off process of the furnace door is simple and quick, and labor intensity is low. The kiln car is moveable, the loading and unloading is convenient and rapid, and the labor intensity is low. An external spray cooling system and a collecting trough are adopted to enable working environment temperature to be low, furnace cooling to be fast, and firing time to be saved.
Description
Technical field
The utility model relates to a kind of calcination equipment, specifically, relates to a kind of refractory material, pottery, electronic material and the components and parts sintering kiln under special atmosphere.
Background technology
Silicon carbide articles, silicon nitride goods, other carbonaceous article, carbide, nitride and metallic material be sintering at high temperature, need carry out in vacuum and oxygen-free atmosphere in general.Common way is that product to be sintered is put into saggar and imbedded carbon granules, promptly buries carbon method sintering.The shortcoming of this method is that the space availability ratio of kiln is low, and labour intensity is big, and operating environment is poor, and yield rate is low, and is difficult to make the metal reaction in the goods to generate nitride.For making the metal in the base substrate all be converted into nitride, the one, in saggar, to concentrate and feed high pure nitrogen or ammonia, this does not address the above problem yet.Improvement to the method is to select the electrothermal way sintering for use, and it is to feed high-purity nitrogen and hydrogen mixture or ammonia is driven airborne oxygen and at high temperature with the goods nitrogenize in electric furnace.This method has obtained certain actual effect, but still keeps away unavoidable intrinsic problem, and promptly oxygen is driven endless, and nitriding atmosphere (nitrogen partial pressure) can not be regulated on a large scale, and hydrogen has the danger of blast.
The utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of sintering in a vacuum is provided, again can be under the atmosphere of control the high-temperature ammonolysis stove of sintered article.
High-temperature ammonolysis stove described in the utility model comprises building in furnace shell, the shell insulation material, refractory lining are arranged and be distributed in the interior thermo electric material of burner hearth.Described furnace shell is provided with fire door, picks up and repair door, vacuum tube, this vacuum tube one end is connected with vavuum pump, the other end passes insulation material and refractory lining communicates, carries compressed air with burner hearth, and nitrogen and adobe discharge the furnace bottom air intake-exhaust flow channel of gas, kiln car and the drive unit thereof that placement is sintered part.
Furnace shell is provided with cable by the electrode hole and the manhole that are connected with thermo electric material in going into outward, and described manhole is positioned at the termination of thermo electric material, place furnace shell around or the bottom.
Described thermo electric material horizontal positioned or vertically straighten, under the situation of horizontal positioned, manhole and fire door are integrated.
Be provided with safety valve, Pressure gauge and thermocouple at furnace roof; Furnace shell be provided with steam vent and be positioned at the bottom spout hole.
At fire door, pick up Xiu Men and other opening part recirculated water cooling and packer ring all arranged.
Described fire door is rectangle or circle, constitute by the reinforcement at the steel plate and the back side, closing by some being connected in of fire door realize on the reinforcement that movable joint screw rod on the furnace shell and nut be pressed in fire door, and the labour intensity when alleviating fastening nut is lined with the horizontal sliding bearing under the nut.
Used thermo electric material is according to the requirement of serviceability temperature and atmosphere and the selected a kind of material or the combination of multiple material from materials such as Elema, Si-Mo rod, carbon-point, carbon pipe, graphite cake, molybdenum filament, molybdenum bar and platinum wire.
Outer wall at furnace wall is provided with the circulating water pipe of forcing cooling usefulness, is furnished with shower and water leg at the furnace roof shell.
High-temperature ammonolysis stove described in the utility model is because good airproof performance, sintering carbon containing, carborundum and ceramic-metal combination in a vacuum, again can be in controllable atmosphere, as sintering said products under blanket of nitrogen, high-pressure atmosphere, the reducing atmosphere and other oxidizable material.Because furnace bottom ejection live gas distributes than other electric furnace was even in the past furnace gas.Because anti-fire door and the big movable joint nut of sticking up of the height of taking makes the switching process of fire door simply rapid, labour intensity is low.Kiln car is removable, makes entrucking and unloads convenient and swiftly, and labour intensity is low.The outer spray cooling system and the water leg that adopt not only make operating ambient temperature low, and can also accelerate cooling in the stove, save firing time.
Description of drawings
Fig. 1 is the schematic diagram of high-temperature ammonolysis stove described in the utility model.
The specific embodiment
Referring to Fig. 1, nitriding furnace described in the utility model comprises that one can be born and builds the thermo electric material 4 that insulation material 2, refractory lining 3 is arranged and be positioned at burner hearth in furnace shell 1 greater than 0.3MPa pressure, the shell.Described furnace shell is provided with fire door 6, pick up and repair door 7, one end and be connected with vavuum pump 13, the other end passes vacuum tube 12 that insulation material 2 and refractory lining 3 communicate with burner hearth, carry furnace bottom air intake-exhaust flow channel 14, this passage that compressed air, nitrogen and adobe discharge gas directly with vacuumize, nitrogen inlet and air intlet communicate, so that evenly flowing and distribution of nitrogen, air, and waste gas is got rid of outside the stove swimmingly, also have and place kiln car 5 and the drive unit thereof that is sintered part.
Described furnace shell can be a cuboid, also can be cylinder, and two can also can be sealed with various end sockets with dull and stereotyped sealing.The fire door that respectively open the front and back of furnace shell 1 and other opening part all have the recirculated water cooling and the rubber ring sealing are arranged.By furnace shell with respect to furnace bottom and the position of waiting to burn product, the various ways such as bell-jar that can move for formula and furnace shell at the bottom of the fixing car of furnace shell.
Furnace shell is provided with is convenient to cable by the electrode hole 11 and the manhole that are connected with thermo electric material 4 in going into outward.Described manhole is positioned at the termination of thermo electric material 4, place as far as possible furnace shell around or the bottom, but described thermo electric material horizontal positioned also can vertically straighten, under the situation of horizontal positioned, manhole and fire door are integrated.Be provided with safety valve 8, Pressure gauge 10 and thermocouple 9 at furnace roof.Furnace shell be provided with steam vent and be positioned at the bottom the spout hole (not shown).
Described fire door is rectangle or circle, be to constitute by the reinforcement at a complete steel plate and the back side, closing by some being connected in of fire door realize on the reinforcement that movable joint screw rod on the furnace shell and nut be pressed in fire door, and the labour intensity when alleviating fastening nut is lined with the horizontal sliding bearing under the nut.
After opening fire door, fire door can hang on the top of fire door with fire door by superposed elevator system, can leave fire door by rotating shaft, can also remove fire door by the rolling mechanism of fire door bottom and the stopping means on top.
Described thermo electric material can be Elema, Si-Mo rod, carbon-point, carbon pipe, graphite cake, molybdenum filament, molybdenum bar and platinum wire etc.Its connected mode can adopt star and delta connection, the homophase components and parts can adopt single also, the simple circuit of single string and string and combination.
Described thermo electric material can be Elema, Si-Mo rod, carbon-point, carbon pipe, graphite cake, molybdenum filament, molybdenum bar and platinum wire etc.Its connected mode can adopt star and delta connection, the homophase components and parts can adopt single also, the simple circuit of single string or string and combination.
Described furnace bottom is furnished with compressed air, nitrogen and adobe discharges the gas flow passage, and directly with vacuumize, nitrogen inlet and air intlet communicate, so that evenly the flowing and distribution of nitrogen, air, and waste gas got rid of outside the stove swimmingly.
For avoiding body of heater overheated, also be provided with the circulating water pipe of forcing cooling usefulness at the outer wall of furnace shell 1, be furnished with shower and water leg at the furnace roof shell.
The course of work:
The kiln car of having piled up adobe is pushed in the stove, and be fixed on carefully on the position of qualification.Move and close fire door, fastening nut is locked fire door.Connect power supply and in stove, send electricity, electric furnace is heated to uniform temperature after, open vavuum pump, after being evacuated to end vacuum in the stove, close vacuum lead, stop to vacuumize, send into nitrogen and make and reach certain normal pressure in the stove, continue to heat up.Heating curve and pressure curve execution by process stipulation in temperature-rise period finish up to overall process.When temperature in the stove reduce to room temperature or can the temperature of blow-on after, slowly open air bleeding valve, make furnace pressure and stove external pressure balance.Unscrew nut, open fire door, release kiln car, so just will sintering or want the product nitrogenize end of nitrogenize.
Claims (10)
1, high-temperature ammonolysis stove, it is characterized in that comprising building in furnace shell (1), the shell and insulation material (2), refractory lining (3) are arranged and be distributed in the interior thermo electric material (4) of burner hearth, described furnace shell is provided with fire door (6), picks up and repair door (7), vacuum tube (12), this vacuum tube one end is connected with vavuum pump, the other end passes insulation material (2) and refractory lining (3) communicates, carries compressed air with burner hearth, and nitrogen and adobe discharge the furnace bottom air intake-exhaust flow channel (14) of gas, kiln car (5) and the drive unit thereof that placement is sintered part.
2, high-temperature ammonolysis stove according to claim 1, it is characterized in that furnace shell (1) is provided with cable by the electrode hole (11) and the manhole that are connected with thermo electric material (4) in going into outward, described manhole is positioned at the termination of thermo electric material (4), place furnace shell around or the bottom.
3, high-temperature ammonolysis stove according to claim 1 is characterized in that described thermo electric material (4) horizontal positioned or vertically straightens that under the situation of horizontal positioned, manhole and fire door are integrated.
4 according to claim 2 or 3 described high-temperature ammonolysis stoves, it is characterized in that being provided with safety valve (8), Pressure gauge (10) and thermocouple (9) at furnace roof; Furnace shell be provided with steam vent and be positioned at the bottom spout hole.
5,, it is characterized in that at fire door (6), pick up and repair door (7) and other opening part recirculated water cooling and packer ring are all arranged according to claims 4 described nitriding furnaces.
6, high-temperature ammonolysis stove according to claim 5, it is characterized in that described fire door (6) is rectangle or circle, constitute by the reinforcement at the steel plate and the back side, closing by some being connected in of fire door realizes on the reinforcement that movable joint screw rod on the furnace shell and nut be pressed in fire door, labour intensity when alleviating fastening nut is lined with the horizontal sliding bearing under the nut.
7,, it is characterized in that used thermo electric material (4) is according to the requirement of serviceability temperature and atmosphere and the selected a kind of material or the combination of multiple material from materials such as Elema, Si-Mo rod, carbon-point, carbon pipe, graphite cake, molybdenum filament, molybdenum bar and platinum wire according to any described nitriding furnace in the claim 1 to 3.
8,, it is characterized in that used thermo electric material (4) is according to the requirement of serviceability temperature and atmosphere and the selected a kind of material or the combination of multiple material from materials such as Elema, Si-Mo rod, carbon-point, carbon pipe, graphite cake, molybdenum filament, aluminium bar and platinum wire according to the nitriding furnace described in the claim 6.
9, according to any described nitriding furnace in the claim 7, it is characterized in that the outer wall of described furnace shell (1) is provided with the circulating water pipe of forcing cooling usefulness, be furnished with shower and water leg at the furnace roof shell.
10, described nitriding furnace according to claim 8 is characterized in that the outer wall of described furnace shell (1) is provided with the circulating water pipe of forcing cooling usefulness, is furnished with shower and water leg at the furnace roof shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420000377 CN2687593Y (en) | 2004-01-09 | 2004-01-09 | High temperature nitriding furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420000377 CN2687593Y (en) | 2004-01-09 | 2004-01-09 | High temperature nitriding furnace |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520019331 Division CN2819855Y (en) | 2004-07-21 | 2004-07-21 | Sole buckle sheet block structure for bicycle special shoes |
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| Publication Number | Publication Date |
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| CN2687593Y true CN2687593Y (en) | 2005-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420000377 Expired - Fee Related CN2687593Y (en) | 2004-01-09 | 2004-01-09 | High temperature nitriding furnace |
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| CN (1) | CN2687593Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913577A (en) * | 2010-07-23 | 2010-12-15 | 章体 | Silicon nitride firing furnace |
| CN102288024A (en) * | 2011-07-21 | 2011-12-21 | 常熟皮爱尔奇磁性科技有限公司 | Sintering-atmosphere loss-free obstacle-removing device for ferrite-sintering furnace |
| CN102288023A (en) * | 2011-07-21 | 2011-12-21 | 常熟皮爱尔奇磁性科技有限公司 | Electronic-product sintering furnace for protecting gas from losing during obstacle removal |
| CN106623917A (en) * | 2017-03-03 | 2017-05-10 | 常熟市双月机械有限公司 | Powder metallurgy sintering furnace having high practicability |
| CN108120273A (en) * | 2016-11-28 | 2018-06-05 | 登封市宏远电热元件有限公司 | A kind of U-shaped Elema calcining special cylinder stove |
| CN108680020A (en) * | 2018-04-28 | 2018-10-19 | 太仓森楚源机械设备有限公司 | A kind of atmosphere batch-type furnace |
| CN109631584A (en) * | 2018-12-21 | 2019-04-16 | 河南中汇新材科技有限公司 | The novel nitriding furnace of double-door type and its input and output material method |
| CN110255510A (en) * | 2019-07-03 | 2019-09-20 | 宁夏秦氏新材料有限公司 | The method of gas heating synthesis manganese systems nitride |
| CN112595095A (en) * | 2020-11-28 | 2021-04-02 | 彩虹（合肥）液晶玻璃有限公司 | A muffle furnace cooling device for liquid crystal glazing production |
-
2004
- 2004-01-09 CN CN 200420000377 patent/CN2687593Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913577A (en) * | 2010-07-23 | 2010-12-15 | 章体 | Silicon nitride firing furnace |
| CN102288024A (en) * | 2011-07-21 | 2011-12-21 | 常熟皮爱尔奇磁性科技有限公司 | Sintering-atmosphere loss-free obstacle-removing device for ferrite-sintering furnace |
| CN102288023A (en) * | 2011-07-21 | 2011-12-21 | 常熟皮爱尔奇磁性科技有限公司 | Electronic-product sintering furnace for protecting gas from losing during obstacle removal |
| CN102288023B (en) * | 2011-07-21 | 2012-11-07 | 常熟皮爱尔奇磁性科技有限公司 | Electronic-product sintering furnace for protecting gas from losing during obstacle removal |
| CN102288024B (en) * | 2011-07-21 | 2012-11-21 | 常熟皮爱尔奇磁性科技有限公司 | Sintering-atmosphere loss-free obstacle-removing device for ferrite-sintering furnace |
| CN108120273A (en) * | 2016-11-28 | 2018-06-05 | 登封市宏远电热元件有限公司 | A kind of U-shaped Elema calcining special cylinder stove |
| CN106623917A (en) * | 2017-03-03 | 2017-05-10 | 常熟市双月机械有限公司 | Powder metallurgy sintering furnace having high practicability |
| CN108680020A (en) * | 2018-04-28 | 2018-10-19 | 太仓森楚源机械设备有限公司 | A kind of atmosphere batch-type furnace |
| CN109631584A (en) * | 2018-12-21 | 2019-04-16 | 河南中汇新材科技有限公司 | The novel nitriding furnace of double-door type and its input and output material method |
| CN110255510A (en) * | 2019-07-03 | 2019-09-20 | 宁夏秦氏新材料有限公司 | The method of gas heating synthesis manganese systems nitride |
| CN112595095A (en) * | 2020-11-28 | 2021-04-02 | 彩虹（合肥）液晶玻璃有限公司 | A muffle furnace cooling device for liquid crystal glazing production |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |