CN220761004U - Assembled synthetic block - Google Patents
Assembled synthetic block Download PDFInfo
- Publication number
- CN220761004U CN220761004U CN202320946728.8U CN202320946728U CN220761004U CN 220761004 U CN220761004 U CN 220761004U CN 202320946728 U CN202320946728 U CN 202320946728U CN 220761004 U CN220761004 U CN 220761004U
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- Prior art keywords
- conductive
- insulating
- heating
- sheet
- block
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- 238000010438 heat treatment Methods 0.000 claims abstract description 65
- 238000004321 preservation Methods 0.000 claims abstract description 32
- 239000002131 composite material Substances 0.000 claims abstract description 21
- 229910052903 pyrophyllite Inorganic materials 0.000 claims abstract description 20
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 8
- 239000010439 graphite Substances 0.000 claims description 8
- 239000010459 dolomite Substances 0.000 claims description 7
- 229910000514 dolomite Inorganic materials 0.000 claims description 7
- 239000011780 sodium chloride Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims 2
- 229910003460 diamond Inorganic materials 0.000 abstract description 17
- 239000010432 diamond Substances 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 11
- 238000003786 synthesis reaction Methods 0.000 abstract description 11
- 230000015572 biosynthetic process Effects 0.000 abstract description 10
- 238000005245 sintering Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 7
- 238000003763 carbonization Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 238000005336 cracking Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012768 molten material Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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- Resistance Heating (AREA)
Abstract
The utility model relates to an assembled synthetic block, and belongs to the technical field of synthesis of polycrystalline diamond composite materials. The assembled composite block comprises a pyrophyllite block with a through hole, a heating tube embedded in the inner peripheral part of the pyrophyllite block, an insulating tube embedded in the heating tube, an insulating sheet adhered to the composite cavity, a conductive heating layer adhered to the insulating sheet, a conductive layer adhered to the conductive heating layer and a heat preservation device sleeved outside the heating tube. According to the assembled synthetic block, the heating pipes are arranged on the periphery of the synthetic cavity, and the conductive heating layers are arranged on the two ends of the synthetic cavity, so that the uniformity of temperature fields of the periphery and the two ends in the synthetic cavity can be improved, the uniformity of the temperature inside the blank in the sintering process is further ensured, the performance of the sintered polycrystalline diamond material is improved, and adverse effects such as cracks, drill falling and carbonization are avoided in use.
Description
Technical Field
The utility model relates to an assembled synthetic block, and belongs to the technical field of synthesis of polycrystalline diamond composite materials.
Background
In recent years, polycrystalline diamond composites (e.g., polycrystalline diamond compacts, polycrystalline diamond wire-drawing dies, PCD blades) are becoming increasingly popular in the high-hardness materials industry due to their high strength, high wear resistance, and excellent cost performance. While the properties of polycrystalline diamond in polycrystalline diamond composites play a decisive role in the overall properties of the composite, as the requirements of particular industries on the properties (e.g., service life, strength, wear resistance) of polycrystalline diamond composites become more and more demanding, a great deal of workers are beginning to work on how to improve the properties of polycrystalline diamond. At present, a device for synthesizing polycrystalline diamond composite materials in China mainly adopts a hexahedral top press, blanks to be sintered, which are positioned in a metal cup, are required to be installed in an assembly composite block before sintering, graphite pipes which are arranged in the assembly composite block are used for heating the blanks positioned in a synthesis cavity in the sintering process, and the graphite pipes are positioned at the periphery of the blanks, so that when the blanks with larger length-diameter ratio are used for synthesizing the polycrystalline diamond composite materials, the temperature fields of two end parts and the periphery of the blanks are uneven by adopting the conventional assembly composite block, and further, the undesirable effects of cracking, drilling dropping, carbonization and the like of the sintered and synthesized polycrystalline diamond composite materials are caused.
Disclosure of Invention
The utility model aims to provide an assembled synthetic block, which can solve the problem that the temperature field in a synthetic cavity is uneven when the assembled synthetic block is adopted to sinter and synthesize a polycrystalline diamond composite material at present.
In order to achieve the above purpose, the technical scheme adopted by the combined block of the utility model is as follows:
an assembled composite block comprises a pyrophyllite block with a through hole, a heating tube embedded in the inner periphery of the pyrophyllite block, an insulating tube embedded in the heating tube, an insulating sheet adhered to a composite cavity, a conductive heating layer adhered to the insulating sheet, a conductive layer adhered to the conductive heating layer and a heat preservation device sleeved outside the heating tube.
According to the assembled synthetic block, the heating pipes are arranged on the periphery of the synthetic cavity, and the conductive heating layers are arranged on the two ends of the synthetic cavity, so that the uniformity of temperature fields of the periphery and the two ends in the synthetic cavity can be improved, the uniformity of the temperature inside the blank in the sintering process is further ensured, the performance of the sintered polycrystalline diamond material is improved, and adverse effects such as cracks, drill falling and carbonization are avoided in use.
Preferably, the heat preservation device is a heat preservation pipe. Preferably, the heat preservation pipe is made of dolomite. The thermal insulation pipe can play a good thermal insulation effect from the periphery of the blank, so that the longitudinal temperature and the axial temperature are guaranteed, the temperature difference of the whole temperature field is reduced, and the sintering of polycrystalline diamond is facilitated.
Preferably, the length of the heat preservation pipe and the heating pipe are the same. Preferably, the length of the heat generating tube is equal to the sum of twice the height of the insulating sheet and the length of the insulating tube.
Preferably, the conductive heating layer is composed of a heating sheet, a heat preservation ring sleeved on the periphery of the heating sheet and two conductive sheets respectively attached to the upper end and the lower end of the heating sheet, one of the two conductive sheets is clamped between the insulating sheet and the heating sheet, and the other conductive sheet is clamped between the conductive layer and the heating sheet. The heat preservation ring is located the both ends of piece that generates heat, and the outside of heating tube is located to the heat preservation pipe box, and heat preservation ring and heating tube can furthest avoid too much loss of heat, and then are favorable to the energy saving.
Preferably, the heat generating sheet is made of graphite. The graphite heating sheet has the advantage of low price, is convenient to assemble and use with the heat preservation ring, and further enables the axial temperature in the synthetic cavity to be more stable and to be more close to the temperature of the periphery in the synthetic cavity.
Preferably, the heat-insulating ring is made of dolomite. The main ingredient of dolomite is CaMg (CO 3 ) 2 The heat-insulating ring can effectively prevent heat from diffusing from the axial direction in the sintering process. The heat preservation ring is located the both ends of piece that generates heat, and the outside of heating tube is located to the heat preservation pipe box, and heat preservation ring and heating tube can furthest avoid too much loss of heat, and then are favorable to the energy saving.
Preferably, the conductive sheet is a metal sheet. The metal sheet is made of Ti, mo and steel. Preferably, the thickness of the conductive sheet is 0.25 to 2.0mm.
Preferably, the conductive layer comprises a conductive ring embedded in the inner periphery of the pyrophyllite block and a conductive plug device embedded in the conductive ring, and the conductive ring and the conductive plug device are both attached to the conductive heating layer. The conductive plug device is attached to the conductive heating layer, so that the conductive effect can be better exerted. The conductive ring is arranged between the pyrophyllite block and the conductive plug device, so that a buffer effect can be exerted by utilizing gaps among the pyrophyllite block and the conductive plug device, cracking of the pyrophyllite block caused by expansion of the conductive plug device at high temperature is avoided, and ejection of molten materials caused by too small edge thickness of the pyrophyllite block can be avoided, so that a blasting prevention effect is achieved.
Preferably, the conductive plug device comprises a plug heat-insulating part capable of insulating heat and used for improving heat insulation of the end part of the synthetic cavity and a conductive plug conductive cap sleeved on the periphery of the plug heat-insulating part. The conductive plug device has the functions of conduction and heat preservation, and can resist the dissipation of the internal temperature to a certain extent.
Preferably, the conductive ring is made of conductive alloy.
Preferably, the insulating tube and the insulating sheet are both made of NaCl.
Preferably, an insulating separation sheet is arranged in the middle of the synthesis cavity, and the extending direction of the insulating separation sheet is perpendicular to the axial direction of the insulating tube; the insulating barrier is made of NaCl. The insulating separation piece can divide the synthetic cavity into an upper cavity and a lower cavity, so that blanks placed in the upper cavity and the lower cavity can be prevented from being adhered in the sintering process.
Drawings
Fig. 1 is a schematic structural diagram of an assembled block of the present utility model.
Wherein, the reference numerals are as follows: 1-a conductive ring; 2-a conductive plug device; 3-pyrophyllite block; 4-conductive sheets; 5-heating tubes; 6-insulating tube; 7-insulating spacers; 8-a heat preservation ring; 9-heating sheets; 10-synthesis cavity; 11-insulating sheets; 12-heat preservation device.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.
It should be noted that the terms "front", "back", "upper", "lower", "left" and "right" are based on the orientation and positional relationship shown in the drawings, and are merely for convenience of describing the present utility model, and do not indicate that the apparatus or component referred to must have a specific orientation, and thus should not be construed as limiting the present utility model.
The features and capabilities of the present utility model are described in further detail below in connection with the examples.
Example 1
The structural schematic diagram of the assembled block of this embodiment is shown in fig. 1, and includes a pyrophyllite block 3 having a through hole, a heating tube 5 embedded in the inner periphery of the pyrophyllite block 3, an insulating tube 6 embedded in the heating tube 5, an insulating sheet 11 bonded to the synthesis cavity 10, a conductive heating layer bonded to the insulating sheet 11, a conductive layer bonded to the conductive heating layer, and a heat preservation device 12 sleeved outside the heating tube 5; the heat preservation device 12 is a heat preservation pipe; the heat-insulating pipe is made of dolomite, and has good heat-insulating effect from the side surface, so that the longitudinal and axial temperatures are ensured, the temperature difference of the whole temperature field is reduced, and the sintering of polycrystalline diamond is facilitated; the insulating sheet is made of NaCl; the synthesis cavity 10 is used for placing a metal cup with a blank inside; the middle part of the synthesis cavity 10 is provided with an insulating separation sheet 7, the extending direction of the insulating separation sheet 7 is vertical to the axial direction of the insulating tube 6, and the insulating separation sheet 7 is made of NaCl; the insulating separation sheet 7 can divide the synthetic cavity 10 into an upper cavity and a lower cavity, so that adhesion of metal cups placed in the upper cavity and the lower cavity in the sintering process can be avoided;
the length of the heat preservation pipe is the same as that of the heating pipe 5; the length of the heating tube 5 is equal to the sum of twice the height of the insulating sheet 11 and the length of the insulating tube 6; the heat preservation pipe and the heating pipe 5 have the same length, and can better play a role in sealing and heat preservation on the heating pipe 5.
The insulating tube 6 is made of NaCl; the heating tube 5 is made of graphite;
the conductive heating layer consists of a heating sheet 9, a heat preservation ring 8 sleeved on the periphery of the heating sheet 9 and two conductive sheets 4 respectively attached to the upper end and the lower end of the heating sheet 9, one of the two conductive sheets 4 is clamped between an insulating sheet 11 and the heating sheet 9, and the other conductive sheet is clamped between the conductive layer and the heating sheet 9; the heating sheet 9 is made of graphite; the heat-insulating ring 8 is made of dolomite, and comprises CaMg (CO) 3 ) 2 The heat can be effectively prevented from diffusing outwards from the axial direction in the sintering process; the conducting plate 4 is a metal plate, is made of Ti, mo, steel and the like, and has the thickness of 0.25-2.0 mm; compared with other heating components, the graphite heating sheet has the advantage of low price, is convenient to assemble and use with the heat preservation ring 8, and furtherThe temperature in the axial direction in the synthesis chamber 10 is made more stable and more nearly equal to the temperature in the peripheral portion in the synthesis chamber 10.
The heat preservation ring 8 is located the both ends of piece 9 that generate heat, and the outside of heating tube 5 is located to the heat preservation pipe box, and heat preservation ring 8 and heat preservation pipe can furthest avoid too much loss of heat, and then are favorable to the energy saving.
The conductive layer comprises a conductive ring 1 embedded in the inner periphery of the pyrophyllite block 3 and a conductive plug device 2 embedded in the conductive ring 1, and the conductive ring 1 and the conductive plug device 2 are both adhered to the conductive heating layer; the conductive ring 1 is made of conductive alloy, and the conductive plug device 2 comprises a plug heat-insulating part capable of insulating heat and used for improving the heat insulation property of the end part of the synthetic cavity 10 and a conductive plug conductive cap sleeved on the periphery of the plug heat-insulating part; the conductive plug device 2 has the functions of conduction and heat preservation, and can resist the dissipation of the internal temperature to a certain extent.
The conductive plug device 2 is attached to the conductive heating layer, so that the conductive effect can be better exerted. The conductive ring 1 is arranged between the pyrophyllite block 3 and the conductive plug device 2, so that a buffer effect can be exerted by utilizing gaps among the pyrophyllite block 3 and the conductive plug device 2, cracking of the pyrophyllite block 3 caused by expansion of the conductive plug device 2 at high temperature is avoided, and ejection of molten materials caused by too small edge thickness of the pyrophyllite block 3 can be avoided, so that a blasting prevention effect is achieved.
Example 2
The assembled block of this embodiment differs from the assembled block of embodiment 1 only in that the insulating barrier 7 is not provided in the synthesis chamber 10 of the assembled block of this embodiment.
Claims (9)
1. An assembled composite block is characterized by comprising a pyrophyllite block (3) with a through hole, a heating tube (5) embedded in the inner peripheral part of the pyrophyllite block (3), an insulating tube (6) embedded in the heating tube (5), an insulating sheet (11) attached to a composite cavity (10), a conductive heating layer attached to the insulating sheet (11), a conductive layer attached to the conductive heating layer and a heat preservation device (12) sleeved outside the heating tube (5); the insulating sheet (11) is arranged at the end part of the insulating tube (6), the conductive heating layer consists of a heating sheet (9), a heat preservation ring (8) sleeved on the periphery of the heating sheet (9) and two conductive sheets (4) respectively attached to the upper end and the lower end of the heating sheet (9), one of the two conductive sheets (4) is clamped between the insulating sheet (11) and the heating sheet (9), and the other conductive sheet is clamped between the conductive layer and the heating sheet (9).
2. The assembled block according to claim 1, characterized in that the heat-generating sheet (9) is made of graphite.
3. The assembled block according to claim 1, characterized in that the insulating ring (8) is made of dolomite.
4. A modular block according to any one of claims 1-3, wherein the insulating means (12) is an insulating tube.
5. The modular composite block of claim 4, wherein the insulating tube is dolomite.
6. A combined block according to any one of claims 1-3, wherein the conductive layer comprises a conductive ring (1) embedded in the inner periphery of the pyrophyllite block (3) and a conductive plug device (2) embedded in the conductive ring (1), and the conductive ring (1) and the conductive plug device (2) are both adhered to the conductive heating layer.
7. The assembled block according to claim 6, wherein the conductive plug device (2) comprises a plug insulating member for improving the insulation of the end of the composite cavity (10) and a conductive plug conductive cap sleeved on the periphery of the plug insulating member; the conducting ring (1) is made of conducting alloy.
8. A combined block according to any one of claims 1-3, characterized in that the middle part of the combining cavity (10) is provided with an insulating partition piece (7), the extending direction of the insulating partition piece (7) is perpendicular to the axial direction of the insulating tube (6); the insulating barrier (7) is made of NaCl.
9. A modular block according to any one of claims 1-3, characterized in that the insulating tube (6) and the insulating sheet (11) are both made of NaCl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320946728.8U CN220761004U (en) | 2023-04-24 | 2023-04-24 | Assembled synthetic block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320946728.8U CN220761004U (en) | 2023-04-24 | 2023-04-24 | Assembled synthetic block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220761004U true CN220761004U (en) | 2024-04-12 |
Family
ID=90615627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320946728.8U Active CN220761004U (en) | 2023-04-24 | 2023-04-24 | Assembled synthetic block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220761004U (en) |
-
2023
- 2023-04-24 CN CN202320946728.8U patent/CN220761004U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |