CN202070563U - Driving warmth-keeping cover - Google Patents
Driving warmth-keeping cover Download PDFInfo
- Publication number
- CN202070563U CN202070563U CN2010206864137U CN201020686413U CN202070563U CN 202070563 U CN202070563 U CN 202070563U CN 2010206864137 U CN2010206864137 U CN 2010206864137U CN 201020686413 U CN201020686413 U CN 201020686413U CN 202070563 U CN202070563 U CN 202070563U
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- CN
- China
- Prior art keywords
- layer
- warm case
- high temperature
- intermediate layer
- active stay
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model aims at providing a driving warmth-keeping cover which is characterized in that the driving warmth-keeping cover is shaped as an inverted groove and consists of four parts including an internal layer which is a thermal energy reflecting layer, a middle layer which is a high-temperature resistant heat-insulating and warmth-keeping layer, an external layer which is a high-temperature resisting and oxidation-proof protective layer, and groove-shaped frames arranged between the middle layer and the external layer and between the middle layer and the internal layer.
Description
Technical field
The utility model relates to the rolling of sheet material, and a kind of active stay-warm case that is positioned on the hot-rolling mill is provided especially.
Background technology
TiAl base alloy because of the performance of its low-density, high specific strength, good excellences such as non-oxidizability Aeronautics and Astronautics, etc. the field have a wide range of applications.For example, but can be applicable to the vitals such as revolving body, missile case empennage, body covering of recoverable spacecraft (RLV) as structural material.The preparation of TiAl based alloy plate is an important research direction expanding TiAl base alloy application, and field of aerospace is urgent to the large-size TiAl based alloy plate demand that satisfies certain engine request.In TiAl base alloy rolling process, selection of process parameters is very important, and these parameters must adapt with the processing characteristics of TiAl base alloy and rolling equipment.Rolling major parameter comprises: rolling strain rate, every time deflection and rolling temperature, and wherein rolling temperature is to need strict control.TiAl base alloy rolling temperature must be controlled in the narrower scope (its temperature range is 150 ℃), otherwise the failure that unstable phenomenons such as macroscopic view cracking and intercrystalline fracture cause material preparation can occur.Therefore realize that nearly ausrolling is a TiAl based alloy plate processing key technology.Yet rolling for large-sized TiAl based alloy plate even adopt ripe jacket sandwich rolling technology, still has a large amount of heats and loses by radiation and convection current in the blank transmission course.The loss of heat can cause the decline of board briquette, thereby in slab, formed tangible thermograde along rolling direction, make that the field distribution of whole slab regional temperature is inhomogeneous, in course of hot rolling, can cause the phenomenon that tissue odds is even, the sheet material cracking is disperseed even caused to performance.Therefore, the anti-cooling protection measure of the formula of in the operation of rolling of TiAl base alloy, must taking the initiative, strict control blank hot-rolled temperature field distribution, thus realize nearly ausrolling.
Summary of the invention
The purpose of this utility model is to provide a kind of active stay-warm case, critical technological point according to large scale TiAl base alloy rolling, active stay-warm case is installed on the hot-rolling mill transporting rail, can make TiAl base alloy in course of hot rolling, rolled piece and surrounding air are isolated, blank temperature is maintained on the hot rolling window temperature, improve the blank temperature field distribution, thereby realize the breakthrough of the nearly ausrolling key technology of large scale TiAl based alloy plate.
The utility model specifically provides a kind of active stay-warm case, it is characterized in that: described active stay-warm case is inverted groove shapes, be made up of four parts: internal layer is the heat energy reflecting layer, the intermediate layer is high temperature resistant thermal insulating warm-keeping layer, skin is high temperature resistant, protection against oxidation layer, fluted shape framework between intermediate layer and skin and intermediate layer and internal layer;
Wherein internal layer is a thermal conductivity factor less than 0.05W/m.K, the anti-material coating of high temperature more than 1000 ℃, the heat-insulating material that hot-fluid is had hindrance function is adopted in the intermediate layer, outer adopt the anti-antioxidizing paint or the coating of high temperature more than 1000 ℃, the groove shapes framework adopts the anti-heat resisting steel of hot environment more than 1000 ℃.
The active stay-warm case that the utility model provides is characterized in that: the thickness of described internal layer is greater than 200 μ m, and the thickness in intermediate layer is 30-50mm, and outer field thickness is greater than 2mm, and groove shapes frame width and used milling train guide rail size match.
The active stay-warm case that the utility model provides is characterized in that: internal layer is Al
2O
3Ceramic coating or sial fiber coat.
The active stay-warm case that the utility model provides is characterized in that: fire-resistant cotton of graphite or high alumina ceramic cellucotton are adopted in the intermediate layer.
The active stay-warm case that the utility model provides is characterized in that: outer high temperature resistant anti-oxidation graphite paint or the nichrome coating of adopting.
The active stay-warm case that the utility model provides is characterized in that: the groove shapes framework adopts Cr28Ni48W5Si2 Nai Gaore steel or SUS310 stainless refractory steel.
Advantage of the present utility model: the active stay-warm case of on the hot-rolling mill transporting rail, installing, reliable and stable in course of hot rolling, heat insulation effect is good, easy to operate, energy savings reduces cost, and has reached the technological requirement of nearly ausrolling large scale TiAl base alloy.Also can promote the use of in the rolling mill practice of other large-sized sheet material.
Description of drawings
The structural representation of the active stay-warm case of Fig. 1 (wherein 1 is the heat energy reflecting layer, and 2 is high temperature resistant thermal insulating warm-keeping layer, and 3 is the groove shapes framework, and 4 is high temperature resistant, protection against oxidation layer).
The specific embodiment
Active stay-warm case internal layer is used Al
2O
3Ceramic coating; Use Nai Gaore steel Cr28Ni48W5Si2 and be processed into the groove shapes framework; Middle high temperature resistant thermal insulating warm-keeping layer is the fire-resistant cotton of graphite; Skin is ZrO
2Ceramic heat-barrier coating.Actual hot rolling result is good, obtains the evenly sheet material of no both macro and micro defective of distortion.
Active stay-warm case internal layer is used Y
2O
3Ceramic coating; Use the SUS310 stainless refractory steel and be processed into the groove shapes framework; Middle high temperature resistant heat insulation layer uses cloth shape carbon fiber; Outer spraying nichrome coating.Actual hot rolling result is good, obtains the evenly sheet material of no both macro and micro defective of distortion.
Active stay-warm case internal layer sial fiber coat; Use the SUS314 stainless refractory steel and be processed into the groove shapes framework; Middle high temperature resistant heat insulation layer uses the high alumina ceramic cellucotton; The high temperature resistant anti-oxidation graphite paint of outer spraying.Actual hot rolling result is good, obtains the evenly sheet material of no both macro and micro defective of distortion.
Claims (6)
1. active stay-warm case, it is characterized in that: described active stay-warm case is inverted groove shapes, be made up of four parts: internal layer is the heat energy reflecting layer, the intermediate layer is high temperature resistant thermal insulating warm-keeping layer, skin is high temperature resistant, protection against oxidation layer, fluted shape framework between intermediate layer and skin and intermediate layer and internal layer;
Wherein internal layer is a thermal conductivity factor less than 0.05W/m.K, the anti-material coating of high temperature more than 1000 ℃, the heat-insulating material that hot-fluid is had hindrance function is adopted in the intermediate layer, outer adopt the anti-antioxidizing paint or the coating of high temperature more than 1000 ℃, the groove shapes framework adopts the anti-heat resisting steel of hot environment more than 1000 ℃.
2. according to the described active stay-warm case of claim 1, it is characterized in that: the thickness of described internal layer is greater than 200 μ m, and the thickness in intermediate layer is 30-50mm, and outer field thickness is greater than 2mm, and groove shapes frame width and used milling train guide rail size match.
3. according to the described active stay-warm case of claim 1, it is characterized in that: internal layer is Al
2O
3Ceramic coating or sial fiber coat.
4. according to the described active stay-warm case of claim 1, it is characterized in that: fire-resistant cotton of graphite or high alumina ceramic cellucotton are adopted in the intermediate layer.
5. according to the described active stay-warm case of claim 1, it is characterized in that: outer high temperature resistant anti-oxidation graphite paint or the nichrome coating of adopting.
6. according to the described active stay-warm case of claim 1, it is characterized in that: the groove shapes framework adopts Cr28Ni48W5Si2 Nai Gaore steel or SUS310 stainless refractory steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206864137U CN202070563U (en) | 2010-12-29 | 2010-12-29 | Driving warmth-keeping cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206864137U CN202070563U (en) | 2010-12-29 | 2010-12-29 | Driving warmth-keeping cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202070563U true CN202070563U (en) | 2011-12-14 |
Family
ID=45108675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206864137U Expired - Fee Related CN202070563U (en) | 2010-12-29 | 2010-12-29 | Driving warmth-keeping cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202070563U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387484A (en) * | 2015-12-18 | 2016-03-09 | 北京立化科技有限公司 | Moving-bed thermal insulation door and boiler |
| CN106460386A (en) * | 2014-06-25 | 2017-02-22 | 哈利伯顿能源服务公司 | Insulation enclosure with a thermal mass |
| CN106460387A (en) * | 2014-06-25 | 2017-02-22 | 哈利伯顿能源服务公司 | Insulation enclosure with a radiant barrier |
-
2010
- 2010-12-29 CN CN2010206864137U patent/CN202070563U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106460386A (en) * | 2014-06-25 | 2017-02-22 | 哈利伯顿能源服务公司 | Insulation enclosure with a thermal mass |
| CN106460387A (en) * | 2014-06-25 | 2017-02-22 | 哈利伯顿能源服务公司 | Insulation enclosure with a radiant barrier |
| CN105387484A (en) * | 2015-12-18 | 2016-03-09 | 北京立化科技有限公司 | Moving-bed thermal insulation door and boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20121229 |