CN2845971Y - Temperature difference electric material hot press device - Google Patents
Temperature difference electric material hot press device Download PDFInfo
- Publication number
- CN2845971Y CN2845971Y CNU2005201239389U CN200520123938U CN2845971Y CN 2845971 Y CN2845971 Y CN 2845971Y CN U2005201239389 U CNU2005201239389 U CN U2005201239389U CN 200520123938 U CN200520123938 U CN 200520123938U CN 2845971 Y CN2845971 Y CN 2845971Y
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- mold core
- thermoelectric material
- mold
- material hot
- temperature difference
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Abstract
The utility model relates to a hot pressing device for temperature difference electric materials. A positioning block, a lower cushion block, a mold, a guide sleeve and an upper pressing block are orderly connected coaxially from bottom to top. which is characterized in that a through hole is arranged in the center of the upper pressing block shaft, an inner graphitic mold sleeve and an outer graphitic mold sleeve are arranged on the mold. The inner mold sleeve is composed of two hemicycle hollow bodies, wherein a lower mold core and an upper mold core arranged on a hollow site of the inner mold sleeve, and a blind hole which has the same shaft with the upper pressing block is arranged in the center of the upper mold core. Because the special hot pressing device is used, temperature difference electric materials are enabled to have the advantages of high precision of temperature control, simple processing, good chemical stability, little possibility to be deformed at high temperature and high performance and intensity of finished temperature difference electric materials in hot pressing.
Description
Technical field
The invention belongs to the processing thermoelectric material and use the device technique field, particularly a kind of thermoelectric material hot-press arrangement.
Background technology
Present known PbTe thermoelectric material is that its weak point is with powder metallurgy cold moudling body: pressing process demoulding difficulty, and the crack appears in the PbTe material; More space etc. appears in the material internal after the compacting, and this all causes conducting material thermoelectricity performance and mechanical performance to reduce, and influences the thermoelectric property of PbTe material, finally influences the efficient and the life-span of thermoelectric generator.
The utility model content
The utility model provides a kind of temperature control precision height for solving problems of the prior art, thermoelectricity capability easy to process, as to improve the PbTe material, the thermoelectric material hot-press arrangement of long service life.
The utility model for the technical scheme that solves the technical problem employing that exists in the known technology is: the thermoelectric material hot-press arrangement, the coaxial from bottom to top locating piece that has been linked in sequence, lower cushion block, mould, fairlead and upper holder block, be characterized in: described upper holder block axle center is provided with a through hole, described mould is provided with inside and outside two-layer graphite die sleeve, interior die sleeve is made of two semicircle hollow bodies, the die sleeve hollow part is provided with lower mold core and upper mold core in described, and described upper mold core center is provided with the blind hole coaxial with described upper holder block.
The utility model can also take following technical measures to realize: be provided with graphite flake between described upper mold core and the lower mold core; Be provided with thermocouple in the blind hole on through hole on the described upper holder block and the described upper mold core; Described internal mold cover hole wall is provided with demoulding powder; Die sleeve hollow cone degree is 1: 50 in described.
Advantage and the good effect that the utlity model has are: owing to adopted the special hot pressing device, make thermoelectric material in hot pressing, the temperature control precision height, easy to process, chemical stability good, high temperature is not yielding, thermoelectric material performance of preparing and intensity height.
Description of drawings
Fig. 1 is the utility model thermoelectric material hot-press arrangement semi-section schematic diagram;
Fig. 2 is a hot pressing die semi-section schematic diagram in the thermoelectric material hot-press arrangement shown in Figure 1.
Label among the figure is respectively: 1. upper holder block; 2. thermocouple; 3. fairlead; 4. upper mold core; 5. interior die sleeve; 6. outer die casing; 7. graphite flake; 8. thermoelectric material powder; 9. lower mold core; 10. lower cushion block; 11. locating piece.
The specific embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, enumerate following examples now, and conjunction with figs. is described in detail as follows:
Embodiment 1: with reference to accompanying drawing 1-2, by machined graphite material is processed upper mold core 4, interior die sleeve 5, outer die casing 6, graphite flake 7, lower mold core 9 parts respectively, the hot pressing die 12 that is assembled together from top to bottom and constitutes, wherein interior die sleeve 5 is made of two semicircle hollow bodies, and hollow tapering is 1: 50; Upper mold core 4 centers are drilled with a blind hole; Process locating piece 11, lower cushion block 10, fairlead 3 and upper holder block 1 by machined respectively with graphite material equally, after locating piece 11, lower cushion block 10, hot pressing die 12, fairlead 3 and upper holder block 1 are assembled together constitute the thermoelectric material hot-press arrangement from bottom to top, wherein 1 center of upper holder block is drilled with a through hole.
Need carry out cleaning one time to hot pressing die 12 and the thermoelectric material hot-press arrangement that goes out in every month, that is: hot pressing die 12 and device were soaked 24 hours in chloroazotic acid, take out the back distilled water flushing, and heating is boiled, carry out repeatedly, be PH=7～8 until distilled water, baking box oven dry, 1000 ℃ of high-temperature process 3～5 hours in vacuum drying oven then.
Before each the use with alcohol swab with whole device wiping, after drying, the graphite jig inner surface is coated with the last layer separating powder uniformly, comprise boron nitride powder (BN), powdered carbon (C) etc.The interior die sleeve 5 that two semicircle hollow bodies constitute is put into outer die casing 6, and lower mold core 9 is put into die sleeve 5, pad last layer graphite flake 7 on lower mold core 9, and the thermoelectric material powder 8 of packing into fills up last layer graphite flake 7 again, places upper mold core 4 at last.Locating piece 11 is placed on the hydraulic column of vacuum hotpressing stove; place lower cushion block 10 successively, hot pressing die 12, fairlead 3, the upper holder block 1 of thermoelectric material powder 8 are housed; in the hole of upper holder block 1 and upper mold core 4, plug thermocouple 2; build bell; vacuumize; the mist that charges into hydrogen and nitrogen is then made protection gas; be warming up to 750-840 ℃; exert pressure and be 30-50MPa; and under this temperature and pressure; kept 15-30 minute, and took out material with stove cooling back, thermoelectric material powder 8 is pressed into the cylinder material.
Claims (5)
1. thermoelectric material hot-press arrangement, the coaxial from bottom to top locating piece that has been linked in sequence, lower cushion block, mould, fairlead and upper holder block, it is characterized in that: described upper holder block axle center is provided with a through hole, described mould is provided with inside and outside two-layer graphite die sleeve, interior die sleeve is made of two semicircle hollow bodies, the die sleeve hollow part is provided with lower mold core and upper mold core in described, and described upper mold core center is provided with the blind hole coaxial with described upper holder block.
2. thermoelectric material hot-press arrangement according to claim 1 is characterized in that: be provided with graphite flake between described upper mold core and the lower mold core.
3. thermoelectric material hot-press arrangement according to claim 1 is characterized in that: be provided with thermocouple in the blind hole on through hole on the described upper holder block and the described upper mold core.
4. thermoelectric material hot-press arrangement according to claim 1 is characterized in that: described internal mold cover hole wall is provided with demoulding powder.
5. thermoelectric material hot-press arrangement according to claim 1 is characterized in that: die sleeve hollow cone degree is 1: 50 in described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201239389U CN2845971Y (en) | 2005-12-13 | 2005-12-13 | Temperature difference electric material hot press device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201239389U CN2845971Y (en) | 2005-12-13 | 2005-12-13 | Temperature difference electric material hot press device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2845971Y true CN2845971Y (en) | 2006-12-13 |
Family
ID=37511388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005201239389U Expired - Lifetime CN2845971Y (en) | 2005-12-13 | 2005-12-13 | Temperature difference electric material hot press device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2845971Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464616A (en) * | 2013-08-01 | 2013-12-25 | 浙江恒成硬质合金有限公司 | Split mould |
| CN106238732A (en) * | 2016-08-30 | 2016-12-21 | 浙江晨华科技有限公司 | A kind of discharge plasma sintering system |
| CN112139348A (en) * | 2020-08-31 | 2020-12-29 | 深圳大学 | Preparation method of amorphous micro-nano structure and hot-press forming device |
-
2005
- 2005-12-13 CN CNU2005201239389U patent/CN2845971Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464616A (en) * | 2013-08-01 | 2013-12-25 | 浙江恒成硬质合金有限公司 | Split mould |
| CN106238732A (en) * | 2016-08-30 | 2016-12-21 | 浙江晨华科技有限公司 | A kind of discharge plasma sintering system |
| CN106238732B (en) * | 2016-08-30 | 2019-08-02 | 浙江晨华科技有限公司 | A kind of discharge plasma sintering system |
| CN112139348A (en) * | 2020-08-31 | 2020-12-29 | 深圳大学 | Preparation method of amorphous micro-nano structure and hot-press forming device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061213 |
|
| EXPY | Termination of patent right or utility model |