CN201374833Y - Composite electrode pressure head and spark plasma sintering device - Google Patents
Composite electrode pressure head and spark plasma sintering device Download PDFInfo
- Publication number
- CN201374833Y CN201374833Y CN200920135328U CN200920135328U CN201374833Y CN 201374833 Y CN201374833 Y CN 201374833Y CN 200920135328 U CN200920135328 U CN 200920135328U CN 200920135328 U CN200920135328 U CN 200920135328U CN 201374833 Y CN201374833 Y CN 201374833Y
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- Prior art keywords
- pressure head
- composite electrode
- electrode
- crimp
- plasma sintering
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The utility model relates to a composite electrode pressure head, which is characterized in that the composite electrode pressure head is formed by compounding an electrode and a pressure head, the conductivity of the pressure head is different from that of the electrode, the electrode is arranged in the pressure head, and the conductivity of the electrode is superior than that of the pressure head. The utility model further provides a spark plasma sintering device, which comprises the composite electrode pressure heads used for electrifying and pressurizing molds on the spark plasma sintering device, the composite electrode pressure heads are respectively arranged on two ends of each mold. After utilizing the technical scheme, as the electrode and the pressure head in the composite electrode pressure head are made of different metal materials, and the conductivity of the electrode is superior than that of the pressure head, most current can flow through the electrode, and heat consumption of the composite electrode pressure head is reduced obviously, thereby being capable of avoiding damaging the composite electrode pressure head or other components surrounding the pressure head due to overheating.
Description
Technical field
The discharging plasma sintering equipment that the utility model relates to a kind of composite electrode crimp and contains this composite electrode crimp.
Background technology
Discharge plasma sintering is to be used to one of state-of-the-art sintering technology for preparing functional material at present in the world, quick, the high-grade sintering that are widely used in nano material, magnetic material, electronic material, fine ceramics, non-crystaline amorphous metal, carbide alloy and composite material, being the ideal equipment of new function material research, development and production, is the ideal substitute of conventional sintering stove.Discharge plasma sintering generally adopts switching pulse direct current energising mode of heating, material self is directly heated carry out sintering, electric pulse acts on the particulate aspect, can significantly improve sintering activity, have that programming rate is fast, sintering time short, energy-efficient, sintered body grade advantages of higher many materials.The electrode pressure head is the vitals in the discharging plasma sintering equipment, the electrode pressure head of existing discharging plasma sintering equipment adopts a kind of material to make, consideration for electrode pressure head elevated temperature strength, its general steel alloy that adopts is made, because the resistance of steel alloy is bigger, so the resistance of electrode pressure head is bigger, when electric current arrives mould by the electrode pressure head, can make the electrode pressure head have bigger thermal losses and be damaged, and can be owing to the overheated vacuum seal that damages on the electrode pressure head.
The utility model content
The purpose of this utility model is to provide a kind of composite electrode crimp, is intended to solve big and because the overheated and problem of easy damage of existing electrode pressure head thermal losses.
Another purpose of the present utility model is to provide a kind of discharging plasma sintering equipment, and it is bigger to be intended to solve in the existing equipment electrode pressure head resistance, during energising thermal losses big, cause it to damage the problem of vacuum seal and pressure head easily.
The utility model is achieved in that a kind of composite electrode crimp, and it is by the pressure head with different electric conductivities and electrode is compound makes, and described electrode places within the pressure head, and the electric conductivity of described electrode is better than the electric conductivity of pressure head.
Preferably, the resistance of described electrode is less than the resistance of pressure head.
Preferably, described pressure head is made by stainless steel or manganese alloy steel material, and described electrode is made by copper or Cu alloy material.
Further, be provided with in the described pressure head and be used for the circulating water cooled road.
Further, an end of described pressure head also is provided with the protection platform.
Preferably, described protection platform is that graphite material or tungsten alloy steel are made.
The present invention also provides a kind of discharging plasma sintering equipment, comprises the above-mentioned composite electrode crimp that is used for to energising of the mould on the discharging plasma sintering equipment and pressurization, and described composite electrode crimp places the two ends of mould respectively.
Further, discharging plasma sintering equipment also can comprise the mounting bracket that is used for discharging plasma sintering equipment, vacuum chamber, vacuum system, hydraulic system, switching pulse DC power supply and control unit, wherein, described vacuum chamber places on the support, described composite electrode crimp places the two ends up and down of vacuum chamber respectively, described switching pulse DC power supply and control unit are electrically connected with composite electrode crimp, and described composite electrode crimp is connected with hydraulic system, and described vacuum chamber is connected with pumped vacuum systems.
Further, discharging plasma sintering equipment also comprises the heat shield that is used to prevent too fast heat radiation of mould and protection vacuum chamber, and described heat shield is installed in the vacuum chamber, and described mould places in the heat shield.
Be different from prior art, the utility model is owing to make composite electrode crimp with different metal materials with electrode respectively with pressure head, and the electric conductivity of electrode is better than the electric conductivity of pressure head, therefore as the discharge sintering equipment component time, most of electric current all arrives mould by electrode, the thermal losses of pressure head is significantly reduced, therefore can avoid pressure head because the overheated and defective of easy damage, also can solve the vacuum seal problem of pressure head circumferential component simultaneously, so improved the useful life of product, reduced use cost.
Description of drawings
Fig. 1 is that the master of a kind of discharging plasma sintering equipment of providing of the utility model embodiment looks schematic diagram.
Fig. 2 is the cross-sectional schematic of the composite electrode crimp that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Referring to Fig. 2, the utility model embodiment at first provides a kind of composite electrode crimp 15, comprise pressure head 151 and electrode 152, described electrode 152 places within the pressure head 151, by pressure head 151 it is coated fully, make it to become one, its connecting bolt 1521 that is used for being connected with external power supply extends outside the pressure head 151.Described pressure head 151 and electrode 152 adopt the metal material of unlike material to make respectively, wherein said electrode 152 can be made by the better argent of electrical and thermal conductivity performance, copper or their alloy, the material of the utility model embodiment electrode 152 can adopt metallic copper or its alloy, can guarantee its favorable conductive heat conductivility, compared with argent, it is less expensive again.Because pressure head 151 need transfer the pressure on the workpiece in its application process, therefore, pressure head 151 will have certain high temperature intensity, the utility model pressure head 151 adopts stainless steel or alloy steel material just can reach above-mentioned requirements, conductivity that stainless steel material has and the performance that is difficult for getting rusty, the elevated temperature strength of pressure head 151 can be guaranteed, the useful life of product can be prolonged again.The utility model composite electrode crimp 15 is because the resistance of copper or copper alloy much smaller than the resistance of stainless steel or manganese alloy steel, can make the electric conductivity of electrode 152 should be better than the electric conductivity of pressure head 151.After the energising, most of electric current is by electrode 152, and the thermal losses of pressure head 151 significantly reduces, and makes the caloric value of whole composite electrode crimp 15 less, can avoid composite electrode crimp 15 to damage owing to overheated, thereby realize the purpose of this utility model.
Further, see also Fig. 2, also can be provided with the circulation waterway 154 that is used to cool off within the described composite electrode crimp 15, described circulation waterway 154 is conventional circulation canal structure, be located in the pressure head 151, it can cooling combined electrode pressure head 15, prevents that better composite electrode crimp 15 from damaging owing to overheated, is not described in detail in this.
Please consult Fig. 2 again; among the utility model composite electrode crimp 15 embodiment; one end of described pressure head 151 also is provided with protection platform 153; described protection platform 153 should have heat-resisting quantity and electric conductivity preferably; make and its parts that both can be adjacent energy electric connection pressure head 151 and miscellaneous part isolation directly can be contacted simultaneously to avoid pressure head 151 with other high-temperature bodies; make pressure head 151 always keep lower temperature, prevent that more effectively pressure head 151 from damaging owing to overheated.Described protection platform 153 can be made by graphite material or tungsten alloy steel; can adopt in the practice and make with high-strength graphite; meet the higher material requirement of protection platform 153 fully; and cost is lower; its shape can be a cylinder; the centre is provided with a groove, and described pressure head 151 1 ends can chimericly be fixed in this groove and (certainly, also can adopt other modes to fix).This structural design realizes that easily cost is lower, and the thermal insulation effect is better.
See also Fig. 1, the utility model also provides the discharging plasma sintering equipment 10 of the above-mentioned composite electrode crimp of a kind of employing, described composite electrode crimp 15 is aforementioned described structure, be electrically connected with switching pulse DC power supply and control unit, with the pressure member mechanical connection, it sets up composite electrode crimp 15A and following composite electrode crimp 15B separately, be correspondingly set up and down, the hydraulic pump 16 that wherein said composite electrode crimp 15B and down is fixed on the underframe 18 is connected, and can be driven to do by this hydraulic pump 16 to move up and down; The described composite electrode crimp 15A that goes up is fixed in one and puts on the shelf on 20, put on the shelf 20 and underframe 18 fixing by two guide rods 19, can make on the one hand put on the shelf 20 and underframe 18 be an integral body, be convenient to put on the shelf 20 and the installation of last composite electrode crimp 15A, can be the mobile guide of hydraulic pump 16 on the other hand, guarantee composite electrode crimp 15B non-migration in the displacement process down.The utility model is gone up between composite electrode crimp 15A and the following composite electrode crimp 15B in described, be provided with a molding tool 13, described mould 13 places in the vacuum chamber 12, described vacuum chamber 12 places on the support 11, and be connected with pumped vacuum systems, meet the vacuum degree requirement of setting to guarantee its vacuum chamber 112 inner chambers.Described composite electrode crimp 15A, the composite electrode crimp 15B two ends up and down of vacuum chamber 12 that are placed in down of going up.By giving last composite electrode crimp 15A and following composite electrode crimp 15B energising and its pressurization thereon, most of electric current can arrive mould 13 by electrode, can in vacuum chamber 12, carry out pressure sintering to starting powder material to be processed, thereby prepare high dimensional accuracy and inhomogeneity DB, finish sintering process.
In the said equipment, because the electrode 152 in the composite electrode crimp 15 adopts different metal materials to make respectively with pressure head 151, and the electric conductivity of electrode 152 is better than the electric conductivity of pressure head 151, so the thermal losses of two composite electrode crimps 15 of the utility model equipment significantly reduces during energising, can avoid it because overheated and damage pressure head and vacuum seal (not shown) on it, the useful life of having improved equipment easily.Need to prove that the protection platform 153 on the following composite electrode crimp 15B can be in order to carrying mould 13 with the effect of objective table.And the pumped vacuum systems of the said equipment, switching pulse DC power supply and control unit are prior art, therefore no longer make introductions all round.
See also Fig. 1, the utility model discharging plasma sintering equipment 10 also comprises a heat shield 14, and described heat shield 14 places in the vacuum chamber 12, and mould 13 places in the heat shield 14.The setting of heat shield 14 can prevent mould 13 too fast heat radiations, with the consumption of saving the energy and avoid vacuum chamber 12 overheated.
Please consult Fig. 1 again, the utility model discharging plasma sintering equipment 10 also is provided with a displacement transducer 17 on underframe 18, can detect down the displacement of composite electrode crimp 15B.
During 10 operations of the utility model discharging plasma sintering equipment, can promoting down by hydraulic pump in the pressure system 16, composite electrode crimp 15B moves up, the mould 13 that described composite electrode crimp 15B down promotes side placed on it contacts with last composite electrode crimp 15A, following composite electrode crimp 15B and last composite electrode crimp 15A exert pressure mould 13 to set, pulse direct current passes through composite electrode crimp 15B down, mould 13 and last composite electrode crimp 15A, mould 13 and hot-pressed material are owing to finish sintering circuit under the pressure of energising heating and composite electrode crimp 15, and control unit is controlled whole sintering process.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (9)
1, a kind of composite electrode crimp is characterized in that: be by the pressure head with different electric conductivities and electrode is compound makes, described electrode places within the pressure head, and the electric conductivity of described electrode is better than the electric conductivity of pressure head.
2, composite electrode crimp as claimed in claim 1 is characterized in that: the resistance of described electrode is less than the resistance of pressure head.
3, composite electrode crimp as claimed in claim 1 is characterized in that: described pressure head is made by stainless steel or manganese alloy steel material, and described electrode is made by copper or Cu alloy material.
4, composite electrode crimp as claimed in claim 1 is characterized in that: be provided with in the described composite electrode crimp and be used for the circulating water cooled road.
5, composite electrode crimp as claimed in claim 1 is characterized in that: an end of described pressure head also is provided with the protection platform.
6, composite electrode crimp as claimed in claim 5 is characterized in that: described protection platform is that graphite material or tungsten alloy steel are made.
7, a kind of discharging plasma sintering equipment is characterized in that: comprise the described composite electrode crimp that is used for to the mould on discharging plasma sintering equipment energising and pressurization of claim 1-6, the be placed in two ends of mould of described composite electrode crimp.
8, a kind of discharging plasma sintering equipment as claimed in claim 7, it is characterized in that: also comprise the mounting bracket that is used for discharging plasma sintering equipment, vacuum chamber, vacuum system, hydraulic system, switching pulse DC power supply and control unit, wherein, described vacuum chamber places on the support, described composite electrode crimp places the two ends up and down of vacuum chamber respectively, described switching pulse DC power supply and control unit are electrically connected with composite electrode crimp, described composite electrode crimp is connected with hydraulic system, and described vacuum chamber is connected with pumped vacuum systems.
9, a kind of discharging plasma sintering equipment as claimed in claim 8 is characterized in that: also comprise the heat shield that is used to prevent too fast heat radiation of mould and protection vacuum chamber, described heat shield is installed in the vacuum chamber, and described mould places in the heat shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920135328U CN201374833Y (en) | 2009-03-02 | 2009-03-02 | Composite electrode pressure head and spark plasma sintering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920135328U CN201374833Y (en) | 2009-03-02 | 2009-03-02 | Composite electrode pressure head and spark plasma sintering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201374833Y true CN201374833Y (en) | 2009-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920135328U Expired - Fee Related CN201374833Y (en) | 2009-03-02 | 2009-03-02 | Composite electrode pressure head and spark plasma sintering device |
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| CN (1) | CN201374833Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135873A (en) * | 2015-08-05 | 2015-12-09 | 清华大学 | Dynamic pressure electric pulse double-field control sintering furnace and sintering method |
| TWI554352B (en) * | 2011-03-02 | 2016-10-21 | Takako Ind Inc | A method of manufacturing a sliding member |
| CN107966018A (en) * | 2017-11-07 | 2018-04-27 | 成都真火科技有限公司 | A kind of control method of the laminar flow plasma generator based on high fever ablation apparatus |
| CN111438361A (en) * | 2020-04-30 | 2020-07-24 | 燕山大学 | Core rod follow-up discharge sintering die |
| CN112404440A (en) * | 2020-11-25 | 2021-02-26 | 厦门理工学院 | Method and mould for rapidly preparing homogeneous thermoelectric material |
-
2009
- 2009-03-02 CN CN200920135328U patent/CN201374833Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI554352B (en) * | 2011-03-02 | 2016-10-21 | Takako Ind Inc | A method of manufacturing a sliding member |
| CN105135873A (en) * | 2015-08-05 | 2015-12-09 | 清华大学 | Dynamic pressure electric pulse double-field control sintering furnace and sintering method |
| CN107966018A (en) * | 2017-11-07 | 2018-04-27 | 成都真火科技有限公司 | A kind of control method of the laminar flow plasma generator based on high fever ablation apparatus |
| CN111438361A (en) * | 2020-04-30 | 2020-07-24 | 燕山大学 | Core rod follow-up discharge sintering die |
| CN112404440A (en) * | 2020-11-25 | 2021-02-26 | 厦门理工学院 | Method and mould for rapidly preparing homogeneous thermoelectric material |
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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: 20091230 Termination date: 20140302 |