CN210410621U - Sintering device for superhard material - Google Patents
Sintering device for superhard material Download PDFInfo
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- CN210410621U CN210410621U CN201920783196.4U CN201920783196U CN210410621U CN 210410621 U CN210410621 U CN 210410621U CN 201920783196 U CN201920783196 U CN 201920783196U CN 210410621 U CN210410621 U CN 210410621U
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Abstract
The utility model belongs to the superhard materials field especially relates to a superhard materials's sintering device. The device passes pressure mechanism including the pyrophyllite, heating mechanism and the heat conduction of seting up synthetic chamber, heating mechanism sets up in the synthetic intracavity portion top of pyrophyllite, heat conduction passes pressure mechanism and is including being located the synthetic pipe of the synthetic intracavity of pyrophyllite, and synthetic nose, bottom are by the shutoff of conducting strip. The utility model discloses simple structure adopts under high temperature high pressure environment ingeniously can synthesize the raw materials that become single crystal superhard material as heat conduction and pass the pressure component, has reduced manufacturing cost by a wide margin.
Description
Technical Field
The utility model belongs to the superhard materials field especially relates to a superhard materials's sintering device.
Background
At present, the raw materials are mostly sintered by using a high-temperature high-pressure mode for synthesizing superhard materials, such as polycrystalline superhard materials of PCD, PCBN and the like, the sintering device shown in the attached drawing 1 is adopted to comprise a conductive steel ring 1, a conductive sheet 2, a heating sheet 3, a heating pipe 4, a pressure transmitting pipe 5, raw materials 6 such as diamond powder or diamond powder and alloy and a pyrophyllite block 7, the heating pipe 4 is firstly placed in a synthesis cavity of the pyrophyllite block 7, the pressure transmitting pipe 5 is then placed in the heating pipe 4, then the raw materials 6 such as diamond powder or diamond powder and alloy are placed in the pressure transmitting pipe 5, finally the heating sheet 3, the conductive sheet 2 and the conductive steel ring 1 are sequentially covered, the heating pipe generates heat by using electric power, and meanwhile, the device is pressurized, so that the pressure transmitting pipe 5 transmits the pressure to the raw materials, and finally, the high-temperature high-pressure sintering.
Sintering device exists the too high drawback of loss among the prior art: the conductive steel ring 1, the conductive sheet 2, the heating sheet 3, the heating tube 4, the pressure transmission tube 5 and the pyrophyllite block 7 in the device all become industrial waste products after raw materials are synthesized into corresponding superhard materials, and great resource waste is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a superhard materials's sintering device, the utility model discloses simple structure adopts ingeniously can synthesize under high temperature high pressure environment for single crystal superhard materials's raw materials as heat conduction and biography pressure component, has reduced manufacturing cost by a wide margin.
In order to solve the technical problem, the utility model discloses a technical scheme as follows:
the utility model provides a superhard materials's sintering device, passes pressure mechanism including pyrophyllite, heating mechanism and the heat conduction of offering synthetic chamber, heating mechanism sets up in the synthetic intracavity portion top of pyrophyllite, heat conduction passes pressure mechanism is including being located the synthetic pipe of the synthetic intracavity of pyrophyllite, and synthetic crown of tubes, bottom are by the shutoff of conducting strip.
Preferably, the number of the synthetic cavities of the pyrophyllite is at least two, and each synthetic cavity corresponds to one synthetic tube and the corresponding heat conducting fin.
Preferably, the heating mechanism is a conductive steel ring, a conductive sheet is arranged at the bottom of the conductive steel ring, and the bottom surface of the conductive sheet is arranged by being attached to the top surface of the conductive sheet.
Preferably, the heat conducting fins and the synthetic tube are formed by graphite pressing.
Preferably, the heat conducting fins and the synthesis tube are formed by pressing a mixture of graphite and a catalyst, the proportion of the graphite and the catalyst is matched according to the performance requirements of different products, and the catalyst mainly comprises metals such as nickel, manganese, cobalt, iron and the like or alloys thereof.
The use method of the sintering device for the superhard material comprises the following steps:
1) firstly, pressing a mixture of graphite/graphite and a catalyst into a synthetic tube and a heat conducting fin, fitting the synthetic tube with a corresponding synthetic cavity on pyrophyllite in a clearance fit manner, then filling raw materials for synthesizing superhard materials into the synthetic tube, and then plugging an opening at the top of the synthetic tube by using the heat conducting fin;
2) and (3) pressing the conductive steel ring with the heat conducting sheet, placing the sintering device in an environment of 3-20 GPa, and electrifying the conductive steel ring to ensure that the temperature inside a synthesis cavity of the sintering device reaches 1000-3000 ℃ for sintering for not less than 1 min.
The raw materials are superhard mono/polycrystalline materials or superhard mono/polycrystalline materials and alloy matrixes. Specifically, the superhard single crystal material is monocrystalline diamond powder or CBN powder, and the superhard polycrystalline material is polycrystalline diamond.
Compared with the prior art, the utility model, have following advantage:
1) the whole structure of the device is simplified, and the three components of the heating sheet, the heating tube and the pressure transmission tube in the prior art are simplified into two components of the heat conducting sheet and the synthesis tube, because the heat conducting sheet and the synthesis tube in the utility model are both formed by pressing graphite, and the graphite has good heat conducting, electric conducting and pressure transmission performances, and can not influence the synthesis of the superhard single crystal material or the superhard single crystal material in the synthesis tube and the polycrystalline superhard alloy material of the alloy substrate;
2) the graphite serving as heat conduction and pressure transmission functions can be changed into single crystal diamond in a high-temperature and high-pressure environment, so that the pressure transmission performance of the graphite is improved, and meanwhile, the graphite cannot become industrial waste products after production is finished;
3) improve production efficiency, because graphite finally can output single crystal diamond, so this device can set up a plurality of synthetic cavities on the pyrophyllite, improves single sintering output, and 2-4 polycrystalline superhard/superhard combined material can be sintered to the sintering device single among the prior art, but 24 polycrystalline superhard materials of single sintering can be realized to the device, also become to have reduced manufacturing cost mutually.
Drawings
FIG. 1 is an exploded view of a prior art superhard material sintering apparatus;
FIG. 2 is an exploded view of the structure of the superhard material sintering apparatus according to example 1;
FIG. 3 is a schematic top view of pyrophyllite in the superhard material sintering apparatus according to example 2;
FIG. 4 is a schematic top view of pyrophyllite in the superhard material sintering apparatus according to example 3;
fig. 5 is a schematic top view of pyrophyllite in the superhard material sintering apparatus according to example 3.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in fig. 2, the sintering device for superhard materials comprises a pyrophyllite 7 provided with a single synthesis cavity, a heating mechanism and a heat-conducting pressure-transmitting mechanism, wherein the heating mechanism is arranged above the inside of the pyrophyllite 7 synthesis cavity and comprises a conductive steel ring 1, and a conducting strip 2 is arranged at the bottom of the conductive steel ring; the heat-conducting pressure-transmitting mechanism comprises a synthetic tube 9 positioned in a pyrophyllite synthetic cavity, the top and the bottom of the synthetic tube 9 are blocked by a heat-conducting fin 8, and the bottom surface of the conducting strip 2 is arranged by being attached to the top surface of the heat-conducting fin 8; the heat conducting fins 8 and the synthetic tube 9 are formed by graphite pressing. Wherein, the raw materials 6 such as diamond powder or diamond powder and alloy are the raw materials for synthesizing the polycrystalline superhard diamond.
Example 2
As shown in fig. 2 and 3, the sintering device for superhard materials comprises a pyrophyllite 7 provided with three synthesis cavities, a heating mechanism and a heat-conducting pressure-transmitting mechanism, wherein the heating mechanism is arranged above the inside of the pyrophyllite 7 synthesis cavity and comprises a conductive steel ring 1, and a conducting strip 2 is arranged at the bottom of the conductive steel ring; the heat-conducting pressure-transmitting mechanism comprises a synthetic tube 9 positioned in each synthetic cavity of the pyrophyllite, the top and the bottom of the synthetic tube 9 are blocked by heat-conducting fins 8, and the bottom surfaces of the conducting strips 2 are arranged by being attached to the top surfaces of the three heat-conducting fins 8; the heat conducting fins 8 and the synthetic tube 9 are formed by graphite pressing.
Example 3
As shown in fig. 2 and 4, the sintering device for superhard materials comprises a pyrophyllite with four synthetic cavities, a heating mechanism and a heat-conducting pressure-transmitting mechanism, wherein the heating mechanism is arranged above the inside of a pyrophyllite synthetic cavity 7 and comprises a conductive steel ring 1, and a conductive sheet 2 is arranged at the bottom of the conductive steel ring; the heat-conducting pressure-transmitting mechanism comprises a synthetic tube 9 positioned in each synthetic cavity of the pyrophyllite, the top and the bottom of the synthetic tube 9 are blocked by heat-conducting fins, and the bottom surface of the conducting strip 2 is arranged by being attached to the top surfaces of the four heat-conducting fins 8; the heat conducting fins 8 and the synthetic tube 9 are formed by graphite pressing.
Example 4
As shown in fig. 2 and 5, the sintering device for superhard materials comprises a pyrophyllite 7 provided with seven synthesis cavities, a heating mechanism and a heat-conducting pressure-transmitting mechanism, wherein the heating mechanism is arranged above the inside of the pyrophyllite 7 synthesis cavity and comprises a conductive steel ring 1, and a conducting strip 2 is arranged at the bottom of the conductive steel ring 1; the heat-conducting pressure-transmitting mechanism comprises a synthetic tube 9 positioned in each synthetic cavity of the pyrophyllite, the top and the bottom of the synthetic tube 9 are blocked by heat-conducting fins, and the bottom surface of the conducting strip 2 is arranged by being attached to the top surfaces of the seven heat-conducting fins 8; the heat conducting fins 8 and the synthetic tube 9 are formed by graphite pressing.
Example 6
This example is different from example 1 in that the thermally conductive sheet and the synthesis tube are formed by compression molding using a mixture of graphite and a catalyst.
Example 7
This example is different from example 2 in that the thermally conductive sheet and the synthesis tube are formed by compression molding using a mixture of graphite and a catalyst.
Example 8
This example is different from example 3 in that the thermally conductive sheet and the synthesis tube are formed by compression molding using a mixture of graphite and a catalyst.
Example 9
This example is different from example 4 in that the thermally conductive sheet and the synthesis tube are formed by compression molding using a mixture of graphite and a catalyst.
Claims (5)
1. The utility model provides a superhard materials's sintering device, passes pressure mechanism including pyrophyllite, heating mechanism and the heat conduction of offering synthetic chamber, its characterized in that, heating mechanism sets up in the synthetic intracavity portion top of pyrophyllite, the heat conduction passes pressure mechanism is including being located the synthetic pipe of the synthetic intracavity of pyrophyllite, and synthetic roof of tubes, bottom are by the shutoff of conducting strip.
2. The apparatus for sintering superhard material according to claim 1, wherein the number of the composite cavities of the pyrophyllite is at least two, and each composite cavity corresponds to one composite tube and the corresponding heat conducting fin.
3. The apparatus for sintering superhard material according to claim 1, wherein the heating means is an electrically conductive steel ring having a bottom portion provided with a conductive sheet having a bottom surface disposed against a top surface of the conductive sheet.
4. The apparatus for sintering superhard material according to claim 2, wherein the heat-conducting sheet and the composite tube are formed by compression molding of graphite.
5. The apparatus for sintering superhard material according to claim 2, wherein the thermally conductive sheet and the synthesis tube are formed by compression molding a mixture of graphite and catalyst.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920783196.4U CN210410621U (en) | 2019-05-28 | 2019-05-28 | Sintering device for superhard material |
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| CN201920783196.4U CN210410621U (en) | 2019-05-28 | 2019-05-28 | Sintering device for superhard material |
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| CN210410621U true CN210410621U (en) | 2020-04-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152558A (en) * | 2019-05-28 | 2019-08-23 | 河南四方达超硬材料股份有限公司 | A kind of sintering equipment and its application method of superhard material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152558A (en) * | 2019-05-28 | 2019-08-23 | 河南四方达超硬材料股份有限公司 | A kind of sintering equipment and its application method of superhard material |
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