CN204154109U - Rotary partly block thermal shock sintering resistance furnace - Google Patents
Rotary partly block thermal shock sintering resistance furnace Download PDFInfo
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- CN204154109U CN204154109U CN201420540521.1U CN201420540521U CN204154109U CN 204154109 U CN204154109 U CN 204154109U CN 201420540521 U CN201420540521 U CN 201420540521U CN 204154109 U CN204154109 U CN 204154109U
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Abstract
The utility model for the existing inherent shortcoming of electrical resistance sintering stove and the research and development of New Inorganic Materials to the demand of extraordinary sintering technology, devise and a kind of rotaryly partly block thermal shock sintering resistance furnace, comprise furnace shell and be built in the burner hearth of furnace shell, the heater of one-sided or other non-uniform Distribution, partly block loading crucible, crucible supporting bar, through the fixed mount of furnace shell, transmission device, buncher system.Buncher exports and slowly runs by the rotation of the transmission device such as gear or belt drive crucible supporting bar, heater is applied to and waits that the radiant heat burnt on sample is in by the rotation of partly blocking loading crucible the state that is periodically blocked in sintering process, make to wait that the temperature of burning sample presents the cyclic fluctuation of 3oC ~ 100oC.The utility model has to make sintered body crystal grain harmonic growth, homogeneous grain size in sintering process, thing phase Stable distritation is even, density is high, porosity is low, reduces the advantage of distortion of lattice.
Description
Technical field
The utility model relates to a kind of electrical resistance sintering stove, particularly relates to a kind of electrical resistance sintering stove by rotarily driving half shutter the inorganic material such as pottery being carried out to thermal shock sintering.
Background technology
Sintering is the core link of the inorganic material preparation process such as pottery.In sintering process, material forms exclusive crystalline structure, particle size, pattern and the Physical and chemical characteristics such as dislocation, defect, thus makes material possess specific performance.Current national defense industry field and the performance requirement of sciemtifec and technical sphere to material more and more higher, require more and more higher to the Preparation equipment of material.Electrical resistance sintering stove is widely used in the research and production of new material, in general electrical resistance sintering stove, sintered body or sintered material position are fixed, sintering is the heat transfer heating object of the medium such as the heat radiation of Joule heat after the electric current passing to uniform electric current or slowly change in the calandria utilized and air, sintered body is subject to evenly or the heat effect of slowly change, sintered body or sintered material each several part by heat effect comparatively evenly, heat transmission speed evenly or change slowly.This sintering processing is for sintering the inorganic material goods such as common pottery advantageously.Inorganic functional material is waited for the new function pottery with specific function, often needs these materials to have the specific microstructure such as ultra-fine grain, low porosity, purer thing phase, less distortion of lattice to realize its function.Can to help the microstructure realizing ultra-fine grain, low porosity, specific crystal boundary or appropriate distortion of lattice by non-homogeneous, the fast-changing sintering processing of temperature near sintering temperature.Conventional, electric-resistance sintering furnace is difficult to realize hot transmission that is quick, non-uniform change by the change of the input current controlling calandria, and the specific microstructure of these inorganic functional materials is difficult to prepare by conventional, electric-resistance sintering processing.
Summary of the invention
The purpose of this utility model is the demand to extraordinary sintering technology for the inherent shortcoming of existing electrical resistance sintering stove and new material research and development, one-sided or uneven distribution is presented by making calandria in conventional, electric-resistance stove, periodically block the radiant heat be applied on sample, devise a kind of thermal shock sintering resistance furnace, can realize the thermal shock sintering that temperature alternately changes fast on sintered body, adaptive functions pottery waits the demand of New Inorganic Materials sintering.It mainly comprises following structure:
One is rotary partly blocks thermal shock sintering resistance furnace, comprise furnace shell and be built in the burner hearth of furnace shell, the heater of one-sided or other uneven distribution, partly block loading crucible, crucible supporting bar, through the fixed mount of furnace shell, the transmission device such as gear or belt, buncher system, it is characterized in that, heater presents one-sided or other uneven distribution, burner hearth central authorities are provided with partly blocks loading crucible, crucible is connected with crucible supporting bar, crucible supporting bar passes furnace shell by the fixed mount on furnace shell, the crucible supporting bar other end is connected with the transmission gear for electric motor be positioned at outside furnace shell, buncher system is driven crucible supporting bar by the transmission device such as gear or belt and is partly blocked loading crucible and rotates with certain speed.
Described rotary operating temperature range of partly blocking thermal shock sintering resistance furnace is 100oC ~ 1800oC, sintered body or wait burns material and is positioned over circular arc and partly blocks center position in loading crucible, and radiant heat is transferred to sintered body by the inner face reflection of partly blocking loading crucible or waits to burn material near the one side of partly blocking loading crucible and being blocked.Rotary maximum operating temperature of partly blocking thermal shock sintering resistance furnace is determined by the operating temperature ratings of resistance furnace and the maximum operation (service) temperature of partly blocking loading crucible and crucible supporting bar.
Described rotaryly partly block thermal shock sintering resistance furnace, it is characterized in that, furnace shell has aperture, and aperture is positioned at bottom furnace shell, and fixed mount is by aperture through furnace shell, and fixed mount is closely stuck on furnace shell, and crucible supporting bar is fixing and can freely rotate by fixed mount.
Described rotaryly partly block thermal shock sintering resistance furnace, it is characterized in that, partly block loading crucible, crucible supporting bar, through the fixed mount of furnace shell, the transmission device such as gear or belt, buncher system composition swing circle thermal shock sintering equipment, partly block loading crucible, crucible supporting bar and comprise alundum (Al2O3) through the material of fixed mount of furnace shell, zirconium dioxide, magnesia, beryllium oxide, boron nitride, boron carbide, carborundum, silicon nitride, aluminium nitride is at interior pottery, pyroceram or graphite, comprise high-temperature alloy steel, tungsten carbide, titanium carbide, titanium-aluminium alloy, stainless steel is at interior superalloy.
Described rotaryly partly block thermal shock sintering resistance furnace, it is characterized in that, buncher can export adjustable speed and rotate, rotating speed is adjustable to 100 revs/min from 1 rev/min, exporting slowly runs drives crucible supporting bar to rotate with same speed by the transmission device such as gear or belt, make to wait that burn sample is in by rotation the state that is periodically blocked in sintering process, the heat effects such as the radiant heat of heater are periodically blocked, wait that the suffered temperature of burning sample presents cyclic fluctuation, fluctuating temperature is according to different in-furnace temperature, material, rotating speed can change between 3oC ~ 100oC.
Described rotaryly partly block thermal shock sintering resistance furnace, it is characterized in that, the installation of heater is not limited to vertical mounting means, also comprises roof of the furnace or side horizontal type mounting means; Rotary support bar is not limited by vertical mounting means bottom furnace shell, also comprises the vertical or side horizontal type mounting means of roof of the furnace; Loading crucible is not limited to and rotary support bar integration form, also comprises discrete form; The structure of resistance furnace is not limited to case structure, also comprises cylindrical-shaped structure or tubular structure; Sintering atmosphere is not limited to air atmosphere, also comprises the atmosphere sinterings such as vacuum, hydrogen, oxygen, argon gas, nitrogen, carbon monoxide.
The utility model has following beneficial effect:
(1) single-phase crystal grain is stoped to continue to grow up, make different crystal grain harmonic growth: under the thermal shock effect of alternating temperature conversion, the optimum growth temp of the crystal grain of the not jljl phase of the inorganic polycrystalline materials such as pottery is different, easily cause the grain growth speed of certain phase comparatively large at single temperature, and the grain growth speed of other phase is less.The crystal grain at different temperatures rotate the transformation temperature produced at shading type under with optimal growth speed is grown up under respective optimal sintering temperature, and the grain growth of jljl phase is not more or less the same, and homogeneous grain size is better.The preparation of this sintering for multiphase ceramic composite has obviously advantage.
(2) fast temperature near sintering temperature changes original phase structure that accelerates the failure, promote that material generates thing phase stable in sintering range: near sintering temperature, sintering carries out fast, fast-changing temperature in certain limit, original phase structure is accelerated the failure, decrease the resistance generating new phase structure, be conducive to all being created on thing phase the most stable in this temperature range, phase structure stable not in this temperature range is inhibited by variations in temperature and converts resistate phase to.
(3) sintered body density is high, porosity is low: the speed of growth of microscopic particles constantly change under the transformation temperature of shading type rotation generation of jljl phase makes the microscopic particles varied in size can have an opportunity to grow filling space, thus makes sintered density high.In addition, occur in sintering process that the sintered body of liquid phase grows the larger crystal grain of the ratio density of liquid phase of not jljl phase advantageously by mass transfer in liquid phase under transformation temperature, make liquid phase less, density is higher, and structure is finer and close.
(4) control lattice distortion: under single growth temperature, distortion of lattice continues to become large in time, affects the performance of material.At the temperature of checker, grain growth speed constantly changes, and the distortion of lattice produced in grain growth is inhibited, and more disperses.
(5) wide adaptability: in the acceptable temperature range of material, is almost applicable to all solid materials, especially inorganic heterogeneous the or polycrystalline material of suitable sintering.
Accompanying drawing explanation
Accompanying drawing 1 partly blocks thermal shock sintering resistance furnace dress front elevational schematic of the vertical end for rotary;
Accompanying drawing 2 partly blocks thermal shock sintering resistance furnace dress schematic top plan view of the vertical end for rotary;
Accompanying drawing 3 partly blocks thermal shock sintering resistance furnace horizontal type side dress front elevational schematic for rotary;
Accompanying drawing 4 partly blocks thermal shock sintering resistance furnace horizontal type side dress schematic top plan view for rotary;
Accompanying drawing 5 partly blocks thermal shock sintering resistance furnace vertical top dress front elevational schematic for rotary;
Number in the figure: 1-furnace shell, 2-heater, 3-waits to burn sample, and 4-partly blocks loading crucible, 5-arc half shutter, 6-loading crucible, 7-crucible supporting frame, 8-rotary support bar, the anti-lost screens of 9-, 10-fixed mount, 11-transmission device, 12-buncher.
Detailed description of the invention
The utility model provides and a kind of rotaryly partly blocks thermal shock sintering resistance furnace, illustrates to be described further the utility model with detailed description of the invention below by accompanying drawing.
Embodiment 1: as rotaryly in Fig. 1 partly block thermal shock sintering resistance furnace vertical end dress front elevational schematic and Fig. 2 is rotary partly blocks shown in thermal shock sintering resistance furnace vertical end dress schematic top plan view, it is partly block loading crucible and rotary support bar integration form that the rotary machinery partly blocking thermal shock sintering resistance furnace that the utility model provides rotates shield portions, aperture is had bottom furnace shell 1, the fixed mount 10 of alundum (Al2O3) material passes furnace shell 1 by aperture, fixed mount 10 top external diameter is slightly larger than lower outer diameter, closely be stuck in the aperture of furnace shell 1, integrated partly blocks loading crucible 4, the material of rotary support bar 8 and anti-lost screens 9 is alundum (Al2O3), rotary support bar 8 is fixed by fixed mount 10, the outer wall of rotary support bar 8 and the inner wall smooth of fixed mount 10, slightly little than fixed mount 10 of the external diameter of rotary support bar 8, crucible supporting frame has anti-lost screens 9 on the top of fixed mount, anti-lost screens 9 can prevent from partly blocking loading crucible 4 and rotary support bar 8 falls down, anti-lost screens 9 bottom is smooth, together with partly blocking loading crucible 4 and rotary support bar 8 freely can rotate on fixed mount 10, do not move down and do not tilt.The lower end of rotary support bar 8 is connected on transmission device 11 by screens or external screw thread, and transmission device 11 is connected to by belt in the belt grooves of the driving head of buncher 12.Buncher speed is adjustable to 100 revs/min from 1 rev/min.During sintering, to treat that burning sample 3 is put into partly blocks on loading crucible 4, set temperature schedule and start heating, open buncher 12, or need to open buncher 12 at a certain temperature according to burning till, make buncher 12 with certain rotational speed, partly block loading crucible 4 by belt drive and rotate with certain speed, treat burning sample and carry out thermal shock sintering.In the present embodiment, most high sintering temperature is about 1600oC, thermal shock maximum fluctuation about temperature 100oC.
Embodiment 2: thermal shock sintering resistance furnace horizontal type side of partly blocking as rotary in Fig. 3 fills shown in front elevational schematic and Fig. 4 horizontal type side dress schematic top plan view, it is partly block loading crucible and the discrete form of rotary support bar that the rotary machinery partly blocking thermal shock sintering resistance furnace that the utility model provides rotates shield portions, furnace shell 1 side has aperture, the fixed mount 10 of high-temperature alloy steel material passes furnace shell 1 by furnace shell 1 side aperture, fixed mount 10 is closely stuck in the aperture of furnace shell 1, arc half shutter 5 of integration, the material of rotary support bar 8 is high-temperature alloy steel, the loading crucible 6 of integration, the material of crucible supporting frame 7 is high-temperature alloy steel, rotary support bar 8 is fixed by fixed mount 10, the outer wall of rotary support bar 8 and the inner wall smooth of fixed mount 10, slightly little than fixed mount 10 of the external diameter of rotary support bar 8, arc half shutter 5 and the rotary support bar 8 of integration freely can rotate on fixed mount 10, not sidesway and not tilting.The outer end of rotary support bar 8 is connected on transmission device 11 by screens or external screw thread, and transmission device 11 is connected to by gear on the gear of the driving head of buncher 12.Buncher speed is adjustable to 100 revs/min from 1 rev/min.During sintering, to wait that burning sample 3 puts on loading crucible 6, set temperature schedule and start heating, open buncher 12, or need to open buncher 12 at a certain temperature according to burning till, make buncher 12 with certain rotational speed, rotated with certain speed by gear driven arc half shutter 5, treat burning sample and carry out thermal shock sintering.In the present embodiment, most high sintering temperature is about 750oC, thermal shock maximum fluctuation about temperature 50oC.
Embodiment 3: shown in vertical top dress front elevational schematic of partly blocking thermal shock sintering resistance furnace as rotary in Fig. 5, it is partly block loading crucible and the discrete form of rotary support bar that the rotary machinery partly blocking thermal shock sintering resistance furnace that the utility model provides rotates shield portions, furnace shell 1 top has aperture, the fixed mount 10 of pyroceram material passes furnace shell 1 by aperture, fixed mount 10 top external diameter is slightly larger than lower outer diameter, closely be stuck in the aperture of furnace shell 1, arc half shutter 5 of integration, the material of rotary support bar 8 is pyroceram, the loading crucible 6 of integration, the material of crucible supporting frame 7 is pyroceram, rotary support bar 8 is fixed by fixed mount 10, the outer wall of rotary support bar 8 and the inner wall smooth of fixed mount 10, slightly little than fixed mount 10 of the external diameter of rotary support bar 8, crucible supporting frame has anti-lost screens 9 on the top of fixed mount, anti-lost screens 9 can prevent from partly blocking loading crucible 4 and rotary support bar 8 falls down, anti-lost screens 9 bottom is smooth, freely can rotate on fixed mount 10 together with arc half shutter 5 and rotary support bar 8, do not move down and do not tilt.The upper end of rotary support bar 8 is connected on transmission device 11 by screens or external screw thread, and transmission device 11 is connected to by belt in the belt grooves of the driving head of buncher 12.Buncher speed is adjustable to 100 revs/min from 1 rev/min.During sintering, to wait that burning sample 3 puts on loading crucible 4, set temperature schedule and start heating, open buncher 12, or need to open buncher 12 at a certain temperature according to burning till, make buncher 12 with certain rotational speed, rotated with certain speed by belt drive arc half shutter 5, treat burning sample and partly block rotation thermal shock sintering.In the present embodiment, most high sintering temperature is about 1000oC, thermal shock maximum fluctuation about temperature 70oC.
Claims (6)
1. one kind rotary partly block thermal shock sintering resistance furnace, comprise furnace shell and be built in the burner hearth of furnace shell, the heater of one-sided or other uneven distribution, partly block loading crucible, crucible supporting bar, through the fixed mount of furnace shell, the transmission device such as gear or belt, buncher system, it is characterized in that, heater presents one-sided or other uneven distribution, burner hearth central authorities are provided with partly blocks loading crucible, crucible is connected with crucible supporting bar, crucible supporting bar passes furnace shell by the fixed mount on furnace shell, the crucible supporting bar other end is connected with the transmission gear for electric motor be positioned at outside furnace shell, buncher system is driven crucible supporting bar by the transmission device such as gear or belt and is partly blocked loading crucible and rotates with certain speed.
2. rotary according to claim l partly blocks thermal shock sintering resistance furnace, it is characterized in that, rotary operating temperature range of partly blocking thermal shock sintering resistance furnace is 100oC ~ 1800oC, sintered body or wait that burning material is positioned over and partly blocks in loading crucible, rotary maximum operating temperature of partly blocking thermal shock sintering resistance furnace is determined by the operating temperature ratings of resistance furnace and the serviceability temperature of partly blocking loading crucible and crucible supporting bar.
3. rotary according to claim l partly blocks thermal shock sintering resistance furnace, and it is characterized in that, furnace shell has aperture, and aperture is positioned at bottom furnace shell, and fixed mount is by aperture through furnace shell, and crucible supporting bar is fixing and can freely rotate by fixed mount.
4. rotary according to claim l partly blocks thermal shock sintering resistance furnace, it is characterized in that, partly blocks loading crucible, crucible supporting bar, through the fixed mount of furnace shell, the transmission device such as gear or belt, buncher system composition swing circle thermal shock sintering equipment.
5. rotary according to claim l partly blocks thermal shock sintering resistance furnace, it is characterized in that, buncher can export adjustable speed and rotate, rotating speed is adjustable to 100 revs/min from 1 rev/min, exporting slowly runs drives crucible supporting bar to rotate with same speed by the transmission device such as gear or belt, make to wait to burn sample in sintering process by rotating the state that the cycle that is in is blocked, the heat effects such as the heat radiation of heater are periodically carried out blocking to a certain degree, wait that the suffered temperature of burning sample presents cyclic fluctuation, fluctuating temperature is according to different in-furnace temperature, material, rotating speed can change between 3oC ~ 100oC.
6. rotary according to claim l partly blocks thermal shock sintering resistance furnace, and it is characterized in that, the installation of heater comprises vertical mounting means, also comprises roof of the furnace or side horizontal type mounting means; Rotary support bar comprises by mounting means vertical bottom furnace shell, also comprises the vertical or side horizontal type mounting means of roof of the furnace; Loading crucible comprises and rotary support bar integration form, also comprises discrete form; The structure of resistance furnace comprises case structure, also comprises cylindrical-shaped structure or tubular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420540521.1U CN204154109U (en) | 2014-09-19 | 2014-09-19 | Rotary partly block thermal shock sintering resistance furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420540521.1U CN204154109U (en) | 2014-09-19 | 2014-09-19 | Rotary partly block thermal shock sintering resistance furnace |
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| CN204154109U true CN204154109U (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420540521.1U Withdrawn - After Issue CN204154109U (en) | 2014-09-19 | 2014-09-19 | Rotary partly block thermal shock sintering resistance furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197711A (en) * | 2014-09-19 | 2014-12-10 | 重庆科技学院 | Rotating half occluded thermal shock sintering resistance furnace |
| CN104864708A (en) * | 2015-05-07 | 2015-08-26 | 安徽贝意克设备技术有限公司 | Small-sized box-type rotary high-temperature heating furnace |
-
2014
- 2014-09-19 CN CN201420540521.1U patent/CN204154109U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197711A (en) * | 2014-09-19 | 2014-12-10 | 重庆科技学院 | Rotating half occluded thermal shock sintering resistance furnace |
| CN104197711B (en) * | 2014-09-19 | 2015-12-23 | 重庆科技学院 | One is rotary partly blocks thermal shock sintering resistance furnace |
| CN104864708A (en) * | 2015-05-07 | 2015-08-26 | 安徽贝意克设备技术有限公司 | Small-sized box-type rotary high-temperature heating furnace |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150211 Effective date of abandoning: 20151223 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |