CN203764978U - Discharge plasma sintering machine - Google Patents
Discharge plasma sintering machine Download PDFInfo
- Publication number
- CN203764978U CN203764978U CN201420039755.8U CN201420039755U CN203764978U CN 203764978 U CN203764978 U CN 203764978U CN 201420039755 U CN201420039755 U CN 201420039755U CN 203764978 U CN203764978 U CN 203764978U
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- CN
- China
- Prior art keywords
- graphite
- layer
- discharge plasma
- hearth
- plasma sintering
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Abstract
The utility model discloses a discharge plasma sintering machine. The discharge plasma sintering machine comprises a hearth internally provided with a lower graphite pressing head. The lower graphite pressing head is provided with a lower graphite pressing sheet, the upper portion of the lower graphite pressing sheet is provided with an upper graphite pressing sheet and an upper graphite pressing head in sequence, the left sides of an upper graphite sheet and a lower graphite sheet and the right sides of the upper graphite sheet and the lower graphite sheet are provided with a left die and a right die respectively, a cavity defined by the left die, the right die, the upper graphite pressing sheet and the lower graphite pressing sheet is a mold core, the dies are provided with thermoelectric couples with one ends extending out of the hearth wall, and the hearth is formed by combining a thermal reflecting layer, an insulating layer and a supporting layer from interior to exterior in sequence. Due to the fact that the hearth is a composite layer formed by the supporting layer, the insulating layer and the thermal reflecting layer, the hearth is good in insulating effect and slow in heat dissipation, thermal efficiency is improved, and the frequency that an overheat protection device is powered off is reduced.
Description
Technical field
The utility model relates to a kind of discharge plasma sintering equipment, relates in particular to a kind of discharge plasma sintering machine.
Background technology
Discharge plasma sintering (SPS) is a kind of novel Fast Sintering technology that development in recent years is got up.Because plasma activated sintering technology is melted plasma activation, hot pressing, resistance heated and is integrated, thereby have that programming rate is fast, sintering time is short, uniform crystal particles, be conducive to control the fine structure of sintered body, the feature such as the material density of acquisition is high, performance is good.This technology utilizes pulse energy, discharge pulse pressure and a joule thermogenetic TRANSIENT HIGH TEMPERATURE field to realize sintering process,, low consumption high-quality and efficient for realizing cheaply material prepared significant, in the preparation of nano material, composite etc., show great superiority, be now applied to the preparation of metal, pottery, composite and functional material.
Current discharge plasma sintering machine is all generally to have body of heater, is provided with burner hearth in body of heater, between burner hearth and body of heater, is provided with overtemperature protection system, and burner hearth generally all adopts circular steel leather to do, and its heat insulation effect is poor, rapid heat dissipation.Easily like this make the overtemperature protection system outside burner hearth overheated, thereby circut breaking occurs.Impact is produced.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency a kind of discharge plasma sintering machine is provided, and burner hearth forms composite bed by supporting layer, heat-insulation layer and heat-reflecting layer, high insulating effect, and heat radiation is slow, improves the thermal efficiency, reduces overtemperature protection system circut breaking and occurs.
For achieving the above object, the utility model is by the following technical solutions:
A kind of discharge plasma sintering machine, comprise burner hearth, in burner hearth, be provided with graphite push-down head, on graphite push-down head, be provided with graphite lower sheeting, graphite lower sheeting top is disposed with compressing tablet and graphite seaming chuck on graphite, in upper and lower left and right sides of graphite, be provided with left and right mould, the chamber that left and right mould and upper and lower graphite compressing tablet surround is core, on mould, be provided with thermocouple, one end of thermocouple reaches outside hearth wall, and described burner hearth is composited by heat-reflecting layer, heat-insulation layer and supporting layer from inside to outside successively.
Above-mentioned discharge plasma sintering machine, described heat-reflecting layer is fiber cotton layer, and heat-insulation layer is aluminium oxide insulating brick-layer, and supporting layer is sheetmetal layer.
Above-mentioned discharge plasma sintering machine is provided with observation window on hearth wall corresponding to mould.
Above-mentioned discharge plasma sintering machine, is also provided with bolt between described right mould and observation window, is arranged with clamp nut on bolt.
Adopt technique scheme, the utility model has following advantage: burner hearth forms composite bed by supporting layer, heat-insulation layer and heat-reflecting layer, high insulating effect, and heat radiation is slow, improves the thermal efficiency, reduces overtemperature protection system circut breaking and occurs.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
A kind of discharge plasma sintering machine as shown in Figure 1, comprise burner hearth, in burner hearth, be provided with graphite push-down head 13, on graphite push-down head 13, be provided with graphite lower sheeting 8, graphite lower sheeting top is disposed with compressing tablet 9 and graphite seaming chuck 10 on graphite, on graphite, the lower left and right sides is provided with a left side, right mould 11, 7, left, right mould and upper, the chamber that lower graphite compressing tablet surrounds is core, on mould, be provided with thermocouple 12, one end of thermocouple 12 reaches outside hearth wall, between described right mould and observation window, be also provided with bolt 5, on bolt 5, be arranged with clamp nut 6.Described burner hearth is composited by heat-reflecting layer 3, heat-insulation layer 2 and supporting layer 1 from inside to outside successively, on hearth wall corresponding to mould, is provided with observation window 4.Described heat-reflecting layer 3 is fiber cotton layers, and heat-insulation layer 2 is aluminium oxide insulating brick-layers, and supporting layer 1 is sheetmetal layer.
Claims (4)
1. a discharge plasma sintering machine, comprise burner hearth, in burner hearth, be provided with graphite push-down head (13), on graphite push-down head (13), be provided with graphite lower sheeting (8), graphite lower sheeting top is disposed with compressing tablet on graphite (9) and graphite seaming chuck (10), on graphite, the lower left and right sides is provided with a left side, right mould (11, 7), left, right mould and upper, the chamber that lower graphite compressing tablet surrounds is core, on mould, be provided with thermocouple (12), one end of thermocouple (12) reaches outside hearth wall, it is characterized in that: described burner hearth is from inside to outside successively by heat-reflecting layer (3), heat-insulation layer (2) and supporting layer (1) are composited.
2. discharge plasma sintering machine according to claim 1, is characterized in that: described heat-reflecting layer (3) is fiber cotton layer, and heat-insulation layer (2) is aluminium oxide insulating brick-layer, and supporting layer (1) is sheetmetal layer.
3. discharge plasma sintering machine according to claim 1 and 2, is characterized in that: on hearth wall corresponding to mould, be provided with observation window (4).
4. discharge plasma sintering machine according to claim 3, is characterized in that: between described right mould and observation window, be also provided with bolt (5), be arranged with clamp nut (6) on bolt (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420039755.8U CN203764978U (en) | 2014-01-22 | 2014-01-22 | Discharge plasma sintering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420039755.8U CN203764978U (en) | 2014-01-22 | 2014-01-22 | Discharge plasma sintering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203764978U true CN203764978U (en) | 2014-08-13 |
Family
ID=51282225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420039755.8U Expired - Fee Related CN203764978U (en) | 2014-01-22 | 2014-01-22 | Discharge plasma sintering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203764978U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108837839A (en) * | 2018-05-03 | 2018-11-20 | 东南大学 | A kind of low temperature sheet SCR denitration and its SPS tabletting preparation method and application |
-
2014
- 2014-01-22 CN CN201420039755.8U patent/CN203764978U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108837839A (en) * | 2018-05-03 | 2018-11-20 | 东南大学 | A kind of low temperature sheet SCR denitration and its SPS tabletting preparation method and application |
| CN108837839B (en) * | 2018-05-03 | 2020-09-11 | 东南大学 | Low-temperature flaky SCR denitration catalyst and SPS (semi-permeable plasma) tabletting preparation method and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20170122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |