CN202420144U - Wall-flow type high-temperature sintering furnace of honeycomb ceramic carriers - Google Patents
Wall-flow type high-temperature sintering furnace of honeycomb ceramic carriers Download PDFInfo
- Publication number
- CN202420144U CN202420144U CN2011205256444U CN201120525644U CN202420144U CN 202420144 U CN202420144 U CN 202420144U CN 2011205256444 U CN2011205256444 U CN 2011205256444U CN 201120525644 U CN201120525644 U CN 201120525644U CN 202420144 U CN202420144 U CN 202420144U
- Authority
- CN
- China
- Prior art keywords
- graphite
- sintering furnace
- temperature
- furnace
- temperature sintering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to a wall-flow type high-temperature sintering furnace of honeycomb ceramic carriers. The wall-flow type high-temperature sintering furnace not only is high-temperature-resistant, but also can ensure that under the environment with vacuum and protective gas, current passes through a graphite resistor and the graphite resistor heats a dpf green blank in the sintering furnace. The wall-flow type high-temperature sintering furnace comprises a high-temperature sintering furnace, wherein a shell of the high-temperature sintering furnace is of a cylindrical structure; the tail end of the furnace shell is welded with an arc-shaped sealing head; a furnace door is of an arc-head-shaped structure; a shell cavity of the high-temperature furnace is internally provided with a graphite area I and a graphite area II and is positioned on a graphite discharging pillow; and a material disc is positioned on the graphite discharging pillow. The wall-flow type high-temperature sintering furnace has the advantages that (1) due to adoption of the heating of the graphite resistor for sintering, not only is the sintering temperature is high, but also the high-temperature penetrability is good, and stable and reliable sintering quality is ensured; and (2) the structural design is novel, unique and simple, the pressure resistance and the sealing performance are good and the vacuum sintering effect is good.
Description
Technical field
The utility model relates to a kind of both high temperature resistant; Again can be under the environment of vacuum and protective gas; Electric current belongs to high temperature sintering furnace and makes the field through the wall-flow type honeycomb ceramic carrier high temperature sintering furnace of dpf green compact in graphite resistance and the graphite resistance heating heat-agglomerating stove.
Background technology
CN1785895A, title " a kind of method for preparing iolite honeycomb ceramic having relatively low thermel expansion coefficient ", concrete steps are following: 1.1, synthesis of dichroite powder; 1.1.1, the batching; Theory according to cordierite is formed; The accurate various ceramic powders of weighing; Raw material is respectively and can generates aluminium oxide, silica and magnesian material, and it is calcined kaolin that the present invention adopts one of following three kinds of composition of raw materials: 1.1.1.1,10%～20% high pure talc, 15%～25% magnesium carbonate, surplus; 1.1.1.2,10%～20% α-Al2O3Fen, 40%～50% high pure talc, surplus be calcined kaolin; 1.1.1.3,35～45% chlorite, surplus be calcined kaolin; 1.1.2, ball milling; The ratio that adds 1～2 kilogram of deionized water or distilled water according to per kilogram raw material dry powder; Add the neutral dispersant JA282 that accounts for ceramic powder weight 0.5～2wt% in addition; Put into ball grinder together and carry out wet-mixed; Ratio of grinding media to material is: 0.8: 1～3: 1, ball milling method can be one of following manner: cylinder mill, sand milling, stirring mill, and the ball milling time is: 1～30h; 1.1.3, drying; To mix sufficient mud and pour out, and be placed on and carry out drying in the baking oven, baking temperature is: 50～200 ℃; Perhaps carry out spray-drying; The acquisition of dry back mixes, the raw material mixed-powder of drying; 1.1.4, calcining is synthetic; Above-mentioned hybrid ceramic powder is contained in the fire-resistant saggar, perhaps dry powder is pressed into and puts into kiln behind the square brick and calcine syntheticly, calcining heat is 1300～1400 ℃, and temperature retention time is: 1～6h; 1.1.5, sieve; Calcining synthetic back cooling is come out of the stove, and pulverizes, and the powder after the pulverizing is crossed 120 eye mesh screens, finally is crushed to meso-position radius 2～20 μ m; 1.2, synthetic zirconium tungstate negative expansion powder; 1.2.1, the batching; With tetravalence zirconium ion water-soluble inorganic salt; The solubility ammino-complex of tungsten is a precursor, according to mol than Zr: W=1: 2 take by weighing raw material, and above-mentioned raw materials is dissolved in the deionized water; The deionized water addition is that per 100 gram pressed powders add 50～200ml/; The monomer that adds 5～20wt% according to the amount of deionized water is that the crosslinking agent of acrylamide and 0.25～1.0wt% is N, and the N-methylene-bisacrylamide is last; The initator that adds 0.5～1.5vol% according to the volume of solution i.e. ammonium persulfate or the sodium peroxydisulfate of 3～20wt%, fully mixes; 1.2.2, gel; Said mixture is heated to 50～100 ℃, forms even jello; 1.2.3, the calcining; Earlier with jello pulverize, drying, put into calcining furnace then and be heated to 1100～1150 ℃, insulation 2～4h takes out then and puts water rapidly into and carry out Water Quenching; 1.2.4, ball milling; Product after the calcining is mixed with absolute ethyl alcohol, and absolute ethyl alcohol is according to the adding of the amount of every 100g dry powder 50g, and ball milling 1～10h repeats above-mentioned calcining, shrend 2～3 times then, at last again with the absolute ethyl alcohol mixing and ball milling, obtain a cube phase zirconium tungstate negative expansion superfines; 1.3, the preparation ceramic paste preforms; Adopt following prescription: material powder is that the raw material powder is formed by cordierite powder synthetic in the step 1.1 and the raw material of in step 1.1.1, being joined, and the cordierite powder accounts for 70～100wt%, and the raw material powder accounts for 0～30wt%'s; In addition, be 100% with material powder, also have the negative expansion wolframic acid zirconium powder end of following material: 5～15wt%; One of following substances of 3～7wt%: methylcellulose or hydroxypropyl methylcellulose or HEMC; One of following lubricant of 4～6wt%: tung oil or vegetable oil or paraffin wax emulsions or water soluble polymer emulsion; The water of 20～35wt% is put into the mixing one-tenth mud of mud mixer with above-mentioned substance, and mixing time is 3～15h; 1.4, vacuum refining mud; Above-mentioned moulded pottery not yet put in a kiln to bake through wet method refining mud is put into the double-shaft horizontal vacuum pugmill carry out vacuum refining mud, wherein, the speed of mainshaft: 10～20r/min; Vacuum: 961atm, mixing time are 1～5 hour, if when the moulded pottery not yet put in a kiln to bake heating is higher than 40 ℃ when mixing; Should stop at once, wait cool continued refining mud; 1.5, moulded pottery not yet put in a kiln to bake is old; Moulded pottery not yet put in a kiln to bake through vacuum refining mud wraps with plastic sheeting, is put in to carry out oldly under the shady and cool moist environment, and the time is 10～72h; 1.6, vacuum extrudes; To pass through old moulded pottery not yet put in a kiln to bake and put into the arbitrary angle vacuum-extruder and extrude, the vacuum of extruder is: 961atm.Moulded pottery not yet put in a kiln to bake at first passes through 80 orders～120 purpose stainless steel mesh extruding of 800KN under the pressure, be mingled with the elimination graininess; Then,, obtain the cordierite honeycomb ceramic biscuit of needed density, cut into the honeycomb ceramic blank of required length then with molybdenum filament through the metal die of needed hole density; 1.7, microwave typing; After the ceramic honey comb base substrate is extruded; Put into the micro-wave oven drying of finalizing the design rapidly, micro-wave oven selects for use " high fire " or " moderate heat " two grades to carry out, and chooses the suitable microwave time according to the power of micro-wave oven; When selecting " high fire " for use; The microwave time is: 3～8min, and when wherein selecting " moderate heat " for use, the microwave time is: 6～15min; 1.8, body drying; Through the inner moisture in addition of the honeycomb base substrate after the microwave typing, need put into baking oven and carry out long dried, baking temperature is: 50 ℃～120 ℃, till parching; 1.9, base substrate processing; The sufficient ceramic honey comb base substrate of drying is carried out end face processing, obtain neat honeycomb end face; 1.10, high temperature sintering; The complete ceramic honey comb base substrate that processes is put into kiln carry out high temperature sintering, sintering temperature is 1250 ℃～1420 ℃, and temperature retention time is 3～6h; 1.11, through hole handles; With compressed air honeycomb hole is carried out through hole and handle, the residual or ceramic particle of sneaking into guarantees that the duct is unimpeded in the cleaning hole.Its weak point: the one, high temperature furnace designs not science, can't form vacuum-sintering; The 2nd, the constant character difficulty or ease control of sintering temperature directly influences sintering quality.
The utility model content
Purpose of design: avoid the weak point in the background technology; Design a kind of both high temperature resistant; Again can be under the environment of vacuum and protective gas, electric current is through the wall-flow type honeycomb ceramic carrier high temperature sintering furnace of dpf green compact in graphite resistance and the graphite resistance heating heat-agglomerating stove.
Design: in order to realize above-mentioned purpose of design.1, the housing of high temperature sintering furnace is the design of cylinder-like structure, is one of technical characterictic of the utility model.The purpose of doing like this is: since furnace shell terminal with the welding of arc end socket, fire door is the arc head-like structure, and is with cylinder shell and is sealed and matched, and can guarantee that furnace chamber forms vacuum-sintering under negative pressure state, have again stressed evenly, withstand voltage high characteristics.2, be provided with the design in graphite one district and graphite two districts in the high temperature furnace shell chamber, be the utility model technical characterictic two.The purpose of doing like this is: because the electric conductivity of graphite is higher 100 times than general nonmetallic ore; And thermal conductivity surpasses metal materials such as steel, iron, lead; Because it is only to form 3 covalent bonds because of each carbon atom in the graphite and other carbon atoms that graphite can conduct electricity, each carbon atom still keeps 1 free electron and comes transmission charge.Therefore the application adopts the graphite resistance heating, to dpf green compact heat-agglomerating in the stove, has both realized high temperature sintering, has guaranteed the reliability of sintering quality again.
Technical scheme: a kind of wall-flow type honeycomb ceramic carrier high temperature sintering furnace; It comprises high temperature sintering furnace; The housing of said high temperature sintering furnace is cylinder-like structure, and furnace shell is terminal to be welded with the arc end socket, and fire door is the arc head-like structure; Be provided with graphite one district and graphite two districts in the high temperature furnace shell chamber and be positioned at the graphite blowing and rest the head on, charging tray is positioned on the graphite blowing pillow.
The utility model is compared with background technology, and the one, adopt graphite resistance heating sintering, not only sintering temperature is high, and the penetrability of high-temperature temperature is good, has guaranteed the reliable and stable of sintering quality; The 2nd, structural design is novel, unique, simple, the pressure-resistant seal performance is good, and vacuum-sintering is effective.
Description of drawings
Fig. 1 is the structural representation of wall-flow type honeycomb ceramic carrier high temperature sintering furnace.
The specific embodiment
Embodiment 1: with reference to accompanying drawing 1.A kind of wall-flow type honeycomb ceramic carrier high temperature sintering furnace; It comprises high temperature sintering furnace 4; The housing of said high temperature sintering furnace 4 is cylinder-like structure, and furnace shell is terminal to be welded with the arc end socket, and fire door is the arc head-like structure; Be provided with graphite one district 2 and graphite two districts 5 in high temperature furnace shell 4 chambeies and be positioned at the graphite blowing and rest the head on 6, charging tray 3 is positioned on the graphite blowing pillow 6.Said graphite blowing is rested the head on 6 bottoms and is provided with and is spacing between many deflector rolls 7 and deflector roll and the deflector roll and arranges.Said fire door outside is provided with rail fork truck 1.
The equipment operating process: fire door is opened in (1), and the charging tray that the dpf green compact are housed is forwarded on the rail fork truck with little fork truck, charging tray is accurately sent in the stove by the position line on the track by the rail fork truck again.(2) close fire door, open vacuum pump extracting vacuum.(3) set a district, two district's heating schedules and fill the protective gas program automatically respectively.(4) build the sintering program that activates by " beginning "; The control system in one district, two districts is by the thermometric feedback in a district, two districts; Send out the graphite resistance caloric value through a district, thyristor voltage regulator control one district, two districts, two districts, guarantee to press in the stove setting program and heat up, accomplish sintering.(5) sintering is accomplished, treat temperature reduce to can take out material temperature after, open fire door and take out the dpf charging tray.
Equipment characteristic: (1) equipment is made up of body of heater, vacuum system, gas charging system, accelerate cooling system, water-cooling system, vehicle for loading and unloading stuff and electric control system etc., automatically sintering.(2) equipment is provided with overtemperature, disconnected idol, overcurrent warning and defencive function; Also have the cooling water lack of water, superpressure is reported to the police in the stove, and defencive functions such as motor overload have very strong safety interlock function, can guarantee the safe and reliable operation of system.(3) equipment is divided into two districts, the system that independently controls, thermometric feedback, thyristor voltage regulator is all arranged, send out graphite resistance.After one district, two districts set same program, a district, two districts can independent measuring and controlling temps.Can guarantee effectively that the temperature in the stove is unified, even.Can effectively prevent to make dpf expect sintering degree disunity because temperature is uneven, and the substandard products that produce.
What need understand is: though the foregoing description is to the mentality of designing of the utility model detailed text description of contrasting; But these text descriptions; Just the simple text of the utility model mentality of designing is described; Rather than to the restriction of the utility model, any combination, increase or modification that does not exceed the utility model mentality of designing all falls in the protection domain of the utility model.
Claims (3)
1. wall-flow type honeycomb ceramic carrier high temperature sintering furnace; It comprises high temperature sintering furnace; It is characterized in that: the housing of said high temperature sintering furnace is cylinder-like structure, and furnace shell is terminal to be welded with the arc end socket, and fire door is the arc head-like structure; Be provided with graphite one district and graphite two districts in the high temperature furnace shell chamber and be positioned at the graphite blowing and rest the head on, charging tray is positioned on the graphite blowing pillow.
2. wall-flow type honeycomb ceramic carrier high temperature sintering furnace according to claim 1 is characterized in that: said graphite blowing pillow bottom is provided with and is the spacing arrangement between many deflector rolls and deflector roll and the deflector roll.
3. wall-flow type honeycomb ceramic carrier high temperature sintering furnace according to claim 1 is characterized in that: said fire door outside is provided with the rail fork truck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205256444U CN202420144U (en) | 2011-12-15 | 2011-12-15 | Wall-flow type high-temperature sintering furnace of honeycomb ceramic carriers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205256444U CN202420144U (en) | 2011-12-15 | 2011-12-15 | Wall-flow type high-temperature sintering furnace of honeycomb ceramic carriers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202420144U true CN202420144U (en) | 2012-09-05 |
Family
ID=46744901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205256444U Expired - Lifetime CN202420144U (en) | 2011-12-15 | 2011-12-15 | Wall-flow type high-temperature sintering furnace of honeycomb ceramic carriers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202420144U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017177894A1 (en) * | 2016-04-11 | 2017-10-19 | 深圳市鸿效节能股份有限公司 | Heat transfer enhancement mesh-honeycombed bulge and kiln |
| CN115164593A (en) * | 2022-07-13 | 2022-10-11 | 四川大学 | Uniform atmosphere sintering furnace with special-shaped stone ink box |
-
2011
- 2011-12-15 CN CN2011205256444U patent/CN202420144U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017177894A1 (en) * | 2016-04-11 | 2017-10-19 | 深圳市鸿效节能股份有限公司 | Heat transfer enhancement mesh-honeycombed bulge and kiln |
| CN115164593A (en) * | 2022-07-13 | 2022-10-11 | 四川大学 | Uniform atmosphere sintering furnace with special-shaped stone ink box |
| CN115164593B (en) * | 2022-07-13 | 2023-08-04 | 四川大学 | Uniform atmosphere sintering furnace with special-shaped graphite box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1785895A (en) | Method of preparing iolite honeycomb ceramic having relatively low thermel expansion coefficient | |
| CN106564894A (en) | Isotropic isostatic pressing graphite material prepared through oxidized graphene and preparing method | |
| CN104341156A (en) | Silicon carbide based composite microwave-absorbing heating body composition and preparation method thereof | |
| CN102381700A (en) | Manufacturing method of graphite material | |
| Clark et al. | Microwave ignition and combustion synthesis of composites | |
| CN104761251B (en) | A kind of reaction sintering method preparing magnesium aluminate spinel | |
| CN103304221A (en) | Method for preparing inert porcelain ball by using aluminum oxide dust-recovery powder | |
| CN106396643A (en) | Method for recycling and reusing aluminum oxide ceramic waste | |
| CN102378745A (en) | Method for producing aluminum titanate ceramic body | |
| CN104386723B (en) | A kind of preparation method of high-purity alpha-alumina | |
| CN107159887A (en) | A kind of forming method based on microwave adsorption heat-emitting material | |
| CN202420144U (en) | Wall-flow type high-temperature sintering furnace of honeycomb ceramic carriers | |
| CN102554215B (en) | Thermal treatment method for nanometer tantalum powder | |
| CN100453217C (en) | Sintering method of WC-Co cemented carbide | |
| CN103073314B (en) | Preparation method for carbon composite refractory and product prepared by preparation method | |
| CN102674811A (en) | Method for preparing honeycomb ceramic heat accumulator by industrial ceramic waste | |
| CN106747447A (en) | One kind synthesis Al4SiC4The new method of powder body material | |
| CN101462883B (en) | Low-intensity magnesium brick and production method thereof | |
| CN104556979B (en) | A kind of beryllium oxide ceramics supporting rod and preparation method thereof | |
| CN202412429U (en) | Wall flow ceramic honeycomb carrier automatic alternating hole plug machine | |
| CN102603277B (en) | Preparation method for cordierite | |
| CN202572599U (en) | Wall flow type honeycomb ceramic carrier extrusion molding machine | |
| JP4298506B2 (en) | Ceramic product and manufacturing method thereof | |
| CN101508588A (en) | Composite high-temperature deck of high-performance mullite and spinel, and method of producing the same | |
| CN1281833A (en) | Microwave sintering method of composite ceramics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 556011 the first industrial park of Kaili Economic Development Zone, Qiandongnan Miao and Dong Autonomous Prefecture, Guizhou Patentee after: Guizhou Huang Cheng Polytron Technologies Inc Address before: 556011 the first industrial park of Kaili Economic Development Zone, Qiandongnan Miao and Dong Autonomous Prefecture, Guizhou Patentee before: Hangzhou Yiche Vehicle Decontamination Machine Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |
|
| CX01 | Expiry of patent term |