CN205200509U - Directional crystallization heat preservation device and have its directional crystallization stove for - Google Patents
Directional crystallization heat preservation device and have its directional crystallization stove for Download PDFInfo
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- CN205200509U CN205200509U CN201520924472.6U CN201520924472U CN205200509U CN 205200509 U CN205200509 U CN 205200509U CN 201520924472 U CN201520924472 U CN 201520924472U CN 205200509 U CN205200509 U CN 205200509U
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- directional crystallization
- interior bucket
- attemperator
- barrel
- crystallization furnace
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Abstract
The utility model discloses a directional crystallization heat preservation device and have its directional crystallization stove for, the double -deck beta -barrel structure of the device that should keep warm adoption, the outer bucket of heat preservation outside be located inboard heat preservation bucket, be located keeps warm outer barrel and adopts solid carbon felt integrated into one piece and cover to locate outside the interior bucket that keeps warm. The utility model discloses an outer bucket that will keep warm adopt a solid carbon felt integrated into one piece and cover locate keep warm in outside the bucket, because solid carbon felt coefficient of heat conductivity far is less than the coefficient of heat conductivity of traditional soft felt for the whole loss along radial temperature of heat preservation device is reduced by a wide margin, has guaranteed the homogeneity in the inside temperature field of heat preservation device, thereby has guaranteed crystal oven's temperature gradient, and prolonged the life of heat preservation device, avoids frequently changing the outer bucket that keeps warm, has improved crystal oven's production efficiency.
Description
Technical field
The utility model relates to hot investment casting field, especially, relates to a kind of directional crystallization furnace attemperator.In addition, the utility model also relates to a kind of directional crystallization furnace comprising above-mentioned attemperator.
Background technology
20 century 70 mid-terms, American and Britain, Deng developed country first by directional columnargrain blade technology for the production of, owing to eliminating transverse grain boundaries, crystal is produced along specific direction, directional columnargrain blade is compared with traditional equiax crystal blade, performance, life-span and serviceability temperature can be increased substantially, become the important directions of aero-engine research and development.
At present, industrial the most ripe, common method for the production of directional columnargrain blade is rapid solidification method (HRS), i.e. casting mold Mobile Method, and the type directional crystallization furnace is divided into three regions by thermal baffle: the thermal treatment zone, adiabatic region, cooling zone.Wherein, the thermal treatment zone comprises heater (heater) and attemperator (heat-preserving container), object ensures enough heat inputs and the uniformity in temperature field, to improve the thermograde in directional solidification process, obtains good columanar structure.
Existing attemperator adopts double-deck barrel-like structure, and be made up of inner heat-insulating barrel, inner heat-insulating barrel cover plate and insulation outer barrel, wherein inner heat-insulating barrel, inner heat-insulating barrel cover plate material are common graphite, and insulation outer barrel material is soft felt, and manually ties up several layers and make.Because soft felt quality is loosened, the space between manual binding layer is large, and result in the heat radiation of insulation outer barrel serious, radial non-uniform temperature in stove, thermograde cannot effectively be ensured, heat insulation effect is poor, and directional columnargrain is organized bad; In addition, this type insulation outer barrel is short for service life, uses and just need change once for about 5 days, and nearly 1 day consuming time of whole Renewal process (comprising blowing out cooling, replacing etc.), causes stove can not continuous seepage, and production efficiency is low.
Utility model content
The utility model provides a kind of directional crystallization furnace attemperator and has its directional crystallization furnace, to dispel the heat radial non-uniform temperature in the stove that seriously causes, thermograde cannot effectively ensure and the high crystal growing furnace production efficiency caused of attemperator replacement frequency is low technical problem to solve existing directional crystallization furnace due to insulation outer barrel.
The technical solution adopted in the utility model is as follows:
According to an aspect of the present utility model, a kind of directional crystallization furnace attemperator is provided, attemperator adopts double-deck barrel-like structure, comprises the inner heat-insulating barrel being positioned at inner side, the insulation outer barrel being positioned at outside, and insulation outer barrel adopts solid carbon felt one-body molded and is sheathed on outside inner heat-insulating barrel.
Further, outer barrel and inner heat-insulating barrel matched in clearance is incubated.
Further, inner heat-insulating barrel comprises tubular interior bucket staving, and the top of interior bucket staving is provided with interior bucket bung, and the periphery lower surface of interior bucket bung is arranged with the recessed edge of annular coordinated with the top of interior bucket staving.
Further, interior bucket staving and interior bucket bung adopt graphite to make.
Further, the center of interior bucket bung is provided with the first flow-guiding mouth for importing molten alloy, and insulation outer barrel is provided with the second flow-guiding mouth be communicated with it in the first flow-guiding mouth corresponding position.
According to another aspect of the present utility model, provide a kind of directional crystallization furnace, comprise above-mentioned directional crystallization furnace attemperator.
Further, in inner heat-insulating barrel, heater is set, the bottom of attemperator is provided with thermal baffle, cooling device is interval with below thermal baffle, directed formwork as the casting core of crystallographic orientation moves up and down freely between heater, thermal baffle and cooling device, to realize crystallographic orientation.
Further, heater comprises and is positioned at inner heat-insulating barrel and the upper heater arranged along its axially spaced-apart and lower heater.
The utility model has following beneficial effect:
The utility model directional crystallization furnace attemperator and there is its directional crystallization furnace, by adopting solid carbon felt one-body molded insulation outer barrel and being sheathed on outside inner heat-insulating barrel, because solid carbon felt thermal conductivity factor is much smaller than the thermal conductivity factor of traditional soft felt, the overall temperature leak radially of attemperator is significantly reduced, ensure that the uniformity of attemperator internal temperature field, thus ensure the thermograde of crystal growing furnace, and extend the service life of attemperator, avoid frequent replacing to be incubated outer barrel, improve the production efficiency of crystal growing furnace.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the utility model preferred embodiment attemperator;
Fig. 2 is the structural representation of the utility model preferred embodiment directional crystallization furnace.
Description of reference numerals:
1, attemperator;
11, inner heat-insulating barrel; 111, interior bucket staving; 112, interior bucket bung; 113, the first flow-guiding mouth;
12, outer barrel is incubated; 121, the second flow-guiding mouth;
2, directed formwork; 3, heater; 4, cooling device; 5, thermal baffle;
31, upper heater; 32, lower heater.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
Preferred embodiment of the present utility model provides a kind of directional crystallization furnace attemperator, with reference to Fig. 1, the present embodiment attemperator adopts double-deck barrel-like structure, comprise the inner heat-insulating barrel 11 being positioned at inner side, the insulation outer barrel 12 being positioned at outside, insulation outer barrel 12 adopts solid carbon felt one-body molded and is sheathed on outside inner heat-insulating barrel 11.
Empirical tests, 1500 DEG C time, solid carbon felt thermal conductivity factor (0.2-0.27W/m
2. DEG C) be only soft felt thermal conductivity factor (20-25W/m
2. DEG C) 0.01 times, therefore adopt to be only traditional soft felt heat-preserving container by insulation outer barrel 12 dispersed heat in theory of solid carbon felt global formation 0.01 times, significantly reduce radial temperature to run off, ensure the uniformity in temperature field, thus ensure thermograde.And traditional craft is tied up the several layers of insulation outer barrel made due to the space between binding layer and also caused heat radiation serious, and then cause in-furnace temperature uneven, affect directional columnargrain institutional framework, and service life is short, needs frequent replacing affect production efficiency.The present embodiment solid carbon felt adopts carbon felt, flexible graphite paper, graphite glue etc. to obtain through mechanical compaction bonding, solidifying and setting, secondary high-temperature process.Therefore the integrated insulation outer barrel 12 of the present embodiment solid carbon felt not only significantly reduces the overall temperature leak radially of attemperator, improve thermograde, thus obtain good directional columnargrain tissue, also can extend the service life of attemperator, effective minimizing replacement frequency, improves the production efficiency of crystal growing furnace.
In the present embodiment, preferably, outer barrel 12 and inner heat-insulating barrel 11 matched in clearance is incubated.Integrated insulation outer barrel 12 is sheathed on inner heat-insulating barrel 11 outside, makes attemperator be convenient to independent processing, and the loading, unloading of convenient peace and maintenance.
In the present embodiment, preferably, inner heat-insulating barrel 11 comprises tubular interior bucket staving 111, and the top of interior bucket staving 111 is provided with interior bucket bung 112, and the periphery lower surface of interior bucket bung 112 is arranged with lower than the lower surface at center the recessed edge of annular coordinated with the top of interior bucket staving 111.More preferably, interior bucket staving 111 and interior bucket bung 112 adopt graphite to make.
With reference to Fig. 1, in the present embodiment, the center of bucket bung 112 is provided with the first flow-guiding mouth 113 for importing molten alloy, and insulation outer barrel 12 is provided with the second flow-guiding mouth 121 be communicated with it in the first flow-guiding mouth 113 corresponding position.
According to another aspect of the present utility model, provide a kind of directional crystallization furnace, comprise the directional crystallization furnace attemperator 1 of above-described embodiment.With reference to Fig. 2, in the present embodiment directional crystallization furnace, heater 3 is set in attemperator 1, the bottom of attemperator 1 is provided with thermal baffle 5, cooling device 4 is arranged at intervals with below thermal baffle 5, as the directed formwork 2 of the casting core of crystallographic orientation, can move up and down freely between heater 3, thermal baffle 5 and cooling device 4, to realize crystallographic orientation.Thermal baffle 5 forms the thermal treatment zone, adiabatic region, cooling zone along the axis of crystal growing furnace.Preferably, heater 3 comprises and is positioned at inner heat-insulating barrel 11 and the upper heater 31 arranged along its axially spaced-apart and lower heater 32, to be formed in crystal growing furnace effectively and uniform heating field.
Can learn from above description, the present embodiment is by adopting solid carbon felt one-body molded insulation outer barrel and being sheathed on outside inner heat-insulating barrel, because solid carbon felt thermal conductivity factor is much smaller than the thermal conductivity factor of traditional soft felt, the overall temperature leak radially of attemperator is significantly reduced, ensure that the uniformity of attemperator internal temperature field, thus ensure thermograde, and extend the service life of attemperator, avoid frequent replacing to be incubated outer barrel, improve the production efficiency of crystal growing furnace.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a directional crystallization furnace attemperator, described attemperator (1) adopts double-deck barrel-like structure, comprises the inner heat-insulating barrel (11) being positioned at inner side, the insulation outer barrel (12) being positioned at outside, it is characterized in that,
Described insulation outer barrel (12) adopts solid carbon felt one-body molded and is sheathed on outside described inner heat-insulating barrel (11).
2. directional crystallization furnace attemperator according to claim 1, is characterized in that,
Described insulation outer barrel (12) and described inner heat-insulating barrel (11) matched in clearance.
3. directional crystallization furnace attemperator according to claim 1, is characterized in that,
Described inner heat-insulating barrel (11) comprises tubular interior bucket staving (111), the top of described interior bucket staving (111) is provided with interior bucket bung (112), and the periphery lower surface of described interior bucket bung (112) is arranged with the recessed edge of annular coordinated with the top of described interior bucket staving (111).
4. directional crystallization furnace attemperator according to claim 3, is characterized in that,
Described interior bucket staving (111) and described interior bucket bung (112) adopt graphite to make.
5. directional crystallization furnace attemperator according to claim 1, is characterized in that,
The center of described interior bucket bung (112) is provided with the first flow-guiding mouth (113) for importing molten alloy, and described insulation outer barrel (12) is provided with in described first flow-guiding mouth (113) corresponding position the second flow-guiding mouth (121) be communicated with it.
6. a directional crystallization furnace, is characterized in that, comprise as arbitrary in claim 1 to 5 as described in directional crystallization furnace attemperator.
7. directional crystallization furnace according to claim 6, is characterized in that,
Heater (3) is set in described inner heat-insulating barrel (11), the bottom of described attemperator (1) is provided with thermal baffle (5), cooling device (4) is interval with below described thermal baffle (5), directed formwork (2) as the casting core of crystallographic orientation moves up and down freely, to realize crystallographic orientation between described heater (3), described thermal baffle (5) and described cooling device (4).
8. directional crystallization furnace according to claim 7, is characterized in that,
Described heater (3) comprises and is positioned at described inner heat-insulating barrel (11) and the upper heater (31) arranged along its axially spaced-apart and lower heater (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520924472.6U CN205200509U (en) | 2015-11-18 | 2015-11-18 | Directional crystallization heat preservation device and have its directional crystallization stove for |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520924472.6U CN205200509U (en) | 2015-11-18 | 2015-11-18 | Directional crystallization heat preservation device and have its directional crystallization stove for |
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| CN205200509U true CN205200509U (en) | 2016-05-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077500A (en) * | 2016-06-08 | 2016-11-09 | 中国船舶重工集团公司第七二五研究所 | A kind of heating furnace for the preheating of high temperature alloy precision casting shell and insulation |
-
2015
- 2015-11-18 CN CN201520924472.6U patent/CN205200509U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077500A (en) * | 2016-06-08 | 2016-11-09 | 中国船舶重工集团公司第七二五研究所 | A kind of heating furnace for the preheating of high temperature alloy precision casting shell and insulation |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190711 Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee after: China Hangfa South Industrial Co. Ltd. Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee before: Zhuzhou Air China power precision is cast with limit company |
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| TR01 | Transfer of patent right |