CN2794693Y - Resistor type heating and insulation device - Google Patents
Resistor type heating and insulation device Download PDFInfo
- Publication number
- CN2794693Y CN2794693Y CN 200520050695 CN200520050695U CN2794693Y CN 2794693 Y CN2794693 Y CN 2794693Y CN 200520050695 CN200520050695 CN 200520050695 CN 200520050695 U CN200520050695 U CN 200520050695U CN 2794693 Y CN2794693 Y CN 2794693Y
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- type heating
- heater
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- insulation device
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Abstract
The utility model relates to a resistor type heating and insulation device, which is composed of an electrode, a thermal baffle, a lifting mechanism and a water cooling crystallizer, wherein an upper and a lower heaters with unequal cross sections are also arranged in a thermal-insulating inner bucket, and a molybdenum plate is added between graphite electrodes. The utility model has the advantages of uniform temperature field, large upper and lower longitudinal temperature gradient, stable production quality and long service life of the heaters, and the utility model is suitable for the resistor type heating and insulation device with vacuum orientation and a cast movement method.
Description
Technical field
The utility model relates in a kind of stove or the stove of the configuration of heating on the stove, particularly relates to a kind of casting mold and moves the vacuum oriented resistor-type heating and heat-insulating device of method.
Background technology
Power blade generally adopts the mode of directional solidification.Directional solidification is according to the direction of hot-fluid in the strictness control alloy graining process, alloy is solidified all the time, the final foundry goods that obtains to have a branch of column crystal that is arranged in parallel along the direction of expection.But the directed stove of the vacuum heat-preserving that adopts adopts a heater (single district) heating more, and is uiform section at present, makes the Heating Zone Temperature field inhomogeneous, and the temperature difference reaches more than 150 ℃ in the vertical.Thermal baffle adopts graphite, and graphite is electric conductor, for preventing phenomenon such as short circuit, must leave big gap between thermal insulation board and the heater, thus a large amount of heat by the gap below the thermal treatment zone is radiated thermal insulation board.Temperature loss is big, and product quality is difficult to guarantee.
Summary of the invention
The purpose of this utility model is the resistor-type heating and heat-insulating device that proposes a kind of non-constant section double-heater, and the temperature field is even to reach, constant product quality.
The utility model is formed by containing in graphite electrode, thermal baffle, the insulation bucket and elevating mechanism, and principal character is the heater up and down that is provided with non-constant section in insulation barrel, and heater also has at least 2 thermocouples separately up and down.Have additional molybdenum plate between following heater and the electrode, for reducing thermal loss, thermal baffle adopts polycrystalline mullite.
The utility model is according to formula Q=Pt, P=I
2R, R=ρ l/S
In the formula: the heat of Q for producing, P is the power of heater, and t is the time of work, and I is the electric current by heater, and R is the resistance of heater, and ρ is a resistivity, and l is a conductor length, and S is that cross-sectional area of conductor is long-pending.
From above formula as can be seen: the sectional area of R and heater is inversely proportional to.So heater of the present utility model is the non-constant section double-heater, 1400～1600 ℃ of temperature ranges, the longitudinal temperature difference is in ± 20 ℃.
Adopt the polycrystalline mullite fibre plate to make thermal baffle, the gap is little, and thermal loss is few.
Add molybdenum plate between following heater and the electrode, avoided electric discharge phenomena, sintering phenomenon can not occur again, prolonged 2～3 times the service life of heater.
Description of drawings
Fig. 1 is the schematic diagram of the utility model structure
Among the figure 1, graphite electrode 2, molybdenum plate 3, down bucket 12, lagging casing 13 in heater 4, water-cooling ring 5, thermal baffle 6, elevating mechanism 7, water mold 8, heat-insulation layer 9, upper heater 10, shell 11, the insulation, go up temperature thermocouple 14, temperature thermocouple down
The specific embodiment
As seen from Figure 1, the attemperator that contains bucket 11 in graphite electrode 1, thermal baffle 5, elevating mechanism 6 and the insulation, mainly be 11 li upper and lower heaters 9,3 that are provided with non-constant section of bucket in insulation, because thermocouple is fragile, must destroy vacuum state during replacing, so upper and lower heater 9,3 also has 2 thermocouples 13,14 separately with standby, and can proofread mutually.Set up a molybdenum plate 2 between following heater 3 and the electrode 1, fastening with screw, so promptly guaranteed to connect reliably, avoided electric discharge phenomena again, because the characteristic of Mo sintering phenomenon can not occur between molybdenum and the graphite.
Make thermal baffle 5 with polycrystalline mullite, the gap is little, and thermal loss is little, and thermograde can reach 80 ℃/cm.
Claims (3)
1. resistor-type heating and heat-insulating device, constitute by bucket (11) in graphite electrode (1), thermal baffle (5), elevating mechanism (6), water mold (7), the insulation, it is characterized in that: bucket (11) lining is provided with the upper and lower heater (9,3) of non-constant section in the described insulation, has additional molybdenum plate (2) between following heater (3) and the graphite electrode (1).
2. heating and heat-insulating device according to claim 1 is characterized in that: described thermal baffle (5) is made of polycrystalline mullite.
3. heating and heat-insulating device according to claim 1 is characterized in that: described upper and lower heater (9,3) also is provided with at least 2 thermocouples (13,14) separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520050695 CN2794693Y (en) | 2005-04-07 | 2005-04-07 | Resistor type heating and insulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520050695 CN2794693Y (en) | 2005-04-07 | 2005-04-07 | Resistor type heating and insulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2794693Y true CN2794693Y (en) | 2006-07-12 |
Family
ID=36812459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520050695 Expired - Fee Related CN2794693Y (en) | 2005-04-07 | 2005-04-07 | Resistor type heating and insulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2794693Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844222A (en) * | 2010-05-28 | 2010-09-29 | 北京科技大学 | Controllable temperature gradient unidirectional solidification device and method |
| CN106734998A (en) * | 2016-12-31 | 2017-05-31 | 西安交通大学青岛研究院 | A kind of vacuum casting method of niobium silicon intermetallic compound ingot casting |
-
2005
- 2005-04-07 CN CN 200520050695 patent/CN2794693Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844222A (en) * | 2010-05-28 | 2010-09-29 | 北京科技大学 | Controllable temperature gradient unidirectional solidification device and method |
| CN106734998A (en) * | 2016-12-31 | 2017-05-31 | 西安交通大学青岛研究院 | A kind of vacuum casting method of niobium silicon intermetallic compound ingot casting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA SOUTHERN CO. AVIATION INDUSTRIAL CO.,LTD. Free format text: FORMER OWNER: NANFANG AVIATION POWER MACHINERY CORP, CHINA Effective date: 20070727 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070727 Address after: 412002, Hunan City, Zhuzhou Province Patentee after: Nanfang Aviation Ind Co., Ltd., China Address before: 412002, Hunan City, Zhuzhou Province Patentee before: China Nanfang Aviation Power Machinery Co. |
|
| C56 | Change in the name or address of the patentee |
Owner name: CHINA NATIONAL SOUTH AVIATION INDUSTRY (GROUP) CO. Free format text: FORMER NAME: NANFANG AVIATION IND CO., LTD., CHINA |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 412002, Hunan City, Zhuzhou Province Patentee after: China Southern Airlines Industry (Group) Co., Ltd. Address before: 412002, Hunan City, Zhuzhou Province Patentee before: Nanfang Aviation Ind Co., Ltd., China |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060712 Termination date: 20120407 |