CN205395299U - Insulation material structure for make under high temperature condition - Google Patents
Insulation material structure for make under high temperature condition Download PDFInfo
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- CN205395299U CN205395299U CN201521134592.2U CN201521134592U CN205395299U CN 205395299 U CN205395299 U CN 205395299U CN 201521134592 U CN201521134592 U CN 201521134592U CN 205395299 U CN205395299 U CN 205395299U
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Abstract
The utility model belongs to the technical field of insulation cover material and structure, especially, relate to an insulation material structure for make under high temperature condition. Technical scheme: to interior high -purity oxidation aluminium heat preservation, ordinary zirconia heat preservation and the high -purity oxidation zirconium heat preservation of including in proper order outside from, high -purity oxidation aluminium is the aluminium oxide material of purity more than 95%, and ordinary zirconia is that high -purity oxidation zirconium is the zirconia material through the preparation of electrolysis melting technology through the zirconia material of suppression or sintering process preparation. Beneficial effect: can't satisfy the current situation of operation requirement to single material, learn from other's strong points to offset one's weaknesses to the refractory material of difference to 2200 DEG C insulation material demand problem has effectively been solved. The insulation material who plants the structure as to this carries out temperature test experiment, and obvious crackle is not discover to the heat preservation structural integrity around the test. Insulation material's volatility is less in the heating process. The breaking test result shows that insulation material inner structure is fine and close simultaneously, and intensity is better.
Description
Technical field
The invention belongs to muff material and technical field of structures, particularly relate to the insulation material structure used under a kind of hot conditions.
Background technology
The purity of some materials with high melting point is proposed requirements at the higher level by the development of domestic industry technology, a lot of materials with high melting point methods of purification must carry out when very high temperature, these methods or technique temperature required up to 2200 DEG C～more than 2300 DEG C, and the degree of purity of furnace atmosphere requires high, therefore furnace insulation is proposed high requirement, such as its heat resistance, high-temperature insulation, thermal insulation, resistance to irradiation, thermal shock resistance etc., there is no homogenous material at present and disclosure satisfy that above-mentioned requirements.Current domestic conventional high-temperature insulation adiabator is Al2O3And ZrO2, because of material purity, preparation technology and stabilizer types and adding technology Shortcomings, common ZrO2Heat resisting temperature cannot meet instructions for use, simultaneously because ZrO2There is asymmetric bulk effect near 1100 DEG C, in use goods easily ftracture, and thermal shock resistance extreme difference has a strong impact on the service life of product.Pure ZrO2Fusing point has reached 2700 DEG C, and heat conductivity is 1.0W/m k, and its heat resistance and heat conductivility all can meet instructions for use, but ZrO pure more than 1200 DEG C2Sharply declining than resistance, be the good conductor of electricity, especially after with the addition of stabilizer, electrical conductivity substantially increases, and therefore cannot meet insulating properties requirement during use.Al2O3Softening transform can occur more than 1700 DEG C, and its heat resistance cannot meet requirement.
Summary of the invention
The present invention is directed to current material and cannot meet the technical problem of more than 2200 DEG C thermal requirements, it is proposed that the insulation material structure used under a kind of hot conditions.
The technical scheme is that
A kind of insulation material structure used under hot conditions, it is characterised in that: include high-purity alpha-alumina heat-insulation layer, common zirconium oxide heat-insulation layer and high-purity mangesium oxide zirconium heat-insulation layer from outside to inside successively；High-purity alpha-alumina refers to that the alumina material of purity more than 95%, common zirconium oxide refer to that high-purity mangesium oxide zirconium refers to by zirconia material prepared by electrolyzing fused technique by the zirconia material suppressed or prepared by sintering process.
Distance between described each heat-insulation layer is 1～5mm.
Distance between described each heat-insulation layer is 3mm.
The beneficial effect comprise that
The present situation of instructions for use cannot be met for single material, different refractory materials is learnt from other's strong points to offset one's weaknesses, by rational structural design, thus efficiently solving the insulation material needs of problems of 2200 DEG C.The insulation material of this kind of structure has been carried out 2200 DEG C of temperature test tests, and before and after test, heat insulation layer structure is complete, does not find obvious crackle.Before and after test, insulation material does not find the change of weight on the balance that precision is 1g, and this shows that in heating process, the volatility of insulation material is less.Insulation material after test has been carried out crushing test simultaneously.Broken results shows, insulation material internal structure is fine and close, crackle does not occur.Shattering process is more difficult, thus showing, insulation material intensity is better, can meet instructions for use at 2200 DEG C.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation；
Fig. 2 is application structure schematic diagram of the present utility model.
In figure, 1-high-purity mangesium oxide zirconium heat-insulation layer, the common zirconium oxide heat-insulation layer of 2-, 3-high-purity alpha-alumina heat-insulation layer, 4-crucible, 5-heater, 6-insulation material, 7-induction coil.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment 1
Present embodiments provide the insulation material structure used under a kind of hot conditions, its structure is as shown in Figure 1, including high-purity alpha-alumina heat-insulation layer 3, common zirconium oxide heat-insulation layer 2 and high-purity mangesium oxide zirconium heat-insulation layer 1 from outside to inside successively, the distance between each heat-insulation layer is 1～5mm, it is preferred to 3mm；High-purity alpha-alumina refers to that the alumina material of purity more than 95%, common zirconium oxide refer to that high-purity mangesium oxide zirconium refers to by zirconia material prepared by electrolyzing fused technique by the zirconia material suppressed or prepared by sintering process.
Internal layer selects high-purity mangesium oxide zirconia material, and being firstly because high-purity mangesium oxide zirconia material can use 2200 DEG C of long-term stabilities, but it is good conductor more than 1200 DEG C, therefore needs in use to solve Insulation Problems；
For solving above-mentioned Insulation Problems, arranging high-purity mangesium oxide aluminum as insulating barrier at outer layer, this outer layer also needs to ensure that it has good thermostability on material selection simultaneously.
But owing to high-purity mangesium oxide zirconium and the aluminium oxide temperature difference are relatively big, centre also needs to add transition zone, thus ensureing that outer oxide aluminum jacket stably uses.For effective transition high-purity mangesium oxide zirconium and aluminium oxide, the common zirconium oxide of middle use is as transition zone.
The insulation material of this kind of structure 2200 DEG C of temperature test tests have been carried out, intensification scheme is the heating rate of 0-1000 DEG C is 10 DEG C/heating rate of min, 1000-2200 DEG C is 5 DEG C/min, is incubated 60min at 2200 DEG C, then it is cooled to 1000 DEG C with the speed of 10 DEG C/min, furnace cooling.Before and after test, heat insulation layer structure is complete, does not find obvious crackle.Before and after test, insulation material does not find the change of weight on the balance that precision is 1g, and this shows that in heating process, the volatility of insulation material is less.Insulation material after test has been carried out crushing test simultaneously.Broken results shows, insulation material internal structure is fine and close, crackle does not occur.Shattering process is more difficult, thus showing, insulation material intensity is better, can meet instructions for use at 2200 DEG C.
Embodiment 2
The present embodiment is on the basis of embodiment 1, it is provided that a kind of high vacuum induction furnace with above-mentioned insulation material structure, as shown in Figure 2.Crucible 4 is positioned within heater 5, and insulation material 6, between the induction coil 7 and heater 5 of high vacuum induction furnace, is used for avoiding being subject to high temperature impact, and can increase the sensing efficiency of heating surface within high vacuum induction furnace.
Insulation material structure this kind novel efficiently solves homogenous material cannot 2200 DEG C of problems used.Specifically used at induction coil with contain between crucible, high-temperature crucibles and water-cooled copper coil being thermally isolated, thus protecting coil not baked bad by crucible, and increasing the sensing efficiency of heating surface simultaneously.
Above embodiments of the invention are explained in detail.Obviously, above-mentioned embodiment is only most highly preferred embodiment of the invention, but the present invention is not limited to above-described embodiment.In the ken that those of ordinary skill in the art possess, it is also possible to make various change under the premise without departing from present inventive concept.If these amendments and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (6)
1. the insulation material structure used under a hot conditions, it is characterised in that: include high-purity alpha-alumina heat-insulation layer (3), common zirconium oxide heat-insulation layer (2) and high-purity mangesium oxide zirconium heat-insulation layer (1) from outside to inside successively.
2. the insulation material structure used under a kind of hot conditions as claimed in claim 1, it is characterised in that: described high-purity alpha-alumina refers to the alumina material of purity more than 95%.
3. the insulation material structure used under a kind of hot conditions as claimed in claim 1 or 2, it is characterised in that: described common zirconium oxide refers to the zirconia material by suppressing or prepared by sintering process.
4. the insulation material structure used under a kind of hot conditions as claimed in claim 1 or 2, it is characterised in that: described high-purity mangesium oxide zirconium refers to by zirconia material prepared by electrolyzing fused technique.
5. the insulation material structure used under a kind of hot conditions as claimed in claim 1 or 2, it is characterised in that: the distance between described each heat-insulation layer is 1～5mm.
6. the insulation material structure used under a kind of hot conditions as claimed in claim 5, it is characterised in that: the distance between described each heat-insulation layer is 3mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521134592.2U CN205395299U (en) | 2015-12-29 | 2015-12-29 | Insulation material structure for make under high temperature condition |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521134592.2U CN205395299U (en) | 2015-12-29 | 2015-12-29 | Insulation material structure for make under high temperature condition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114452896A (en) * | 2022-02-09 | 2022-05-10 | 南方科技大学 | Efficient pressure transmission assembly preparation method for ultrahigh-temperature and high-pressure experiment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114452896A (en) * | 2022-02-09 | 2022-05-10 | 南方科技大学 | Efficient pressure transmission assembly preparation method for ultrahigh-temperature and high-pressure experiment |
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