CN106237931B - Technological method capable of improving productivity of resin diamond single block - Google Patents
Technological method capable of improving productivity of resin diamond single block Download PDFInfo
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- CN106237931B CN106237931B CN201610761899.8A CN201610761899A CN106237931B CN 106237931 B CN106237931 B CN 106237931B CN 201610761899 A CN201610761899 A CN 201610761899A CN 106237931 B CN106237931 B CN 106237931B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/06—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/06—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
- B01J3/062—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies characterised by the composition of the materials to be processed
Abstract
The invention discloses a process method capable of improving the productivity of a resin diamond single block, which comprises the following steps: the synthetic block containing the catalyst and the raw materials is placed into a press, and resin diamond is synthesized at high temperature and high pressure, wherein the power is suddenly reduced after heating for 60 seconds. The invention has the beneficial effects that: the process method can be widely used for producing the large-cavity single block, improves the yield of the single block and the capacity of equipment, and the polycrystalline diamond produced by the process is in a mosaic or mosaic shape, and has higher thermal stability, high grinding efficiency and excellent self-sharpening performance. In addition, the power is suddenly reduced after heating for 60 seconds, and the self-sharpening property of the resin diamond is effectively improved.
Description
Technical Field
The invention relates to a process method capable of improving the productivity of a resin diamond single block, belonging to the technical field of synthesis of superhard materials.
Background
Among the artificial diamond technologies, the most mature and widely used method is the hydrostatic pressure method (high temperature and high pressure method), which mainly utilizes the static high pressure generated by a hydraulic cubic press and the high temperature generated by current to make graphite undergo phase change under the action of a catalyst to be converted into polycrystalline diamond, compared with single crystal diamond, the polycrystalline diamond has irregular particles, is superior to other superhard material products in the aspect of fine grinding, is mainly used for products such as resin bonded grinding wheels, and is also called as resin diamond.
At present, resin diamonds are influenced by a synthesis process, a synthesis cavity is phi 30-phi 35mm, the yield of a single block is low, the synthesis time is too long, the temperature and pressure requirements are high, the large-scale production cost is high, and the production efficiency is low.
Disclosure of Invention
In order to overcome the defects, the invention provides a process method capable of improving the productivity of the resin diamond single block.
In order to achieve the purpose, the technical scheme of the invention is as follows: a process method capable of improving the productivity of a resin diamond single block comprises the following steps: putting the synthetic block filled with the catalyst and the raw materials into a press, and synthesizing the resin diamond at high temperature and high pressure, wherein the pressure curve is as follows: increasing the pressure to 42-45MPa within 58-65 seconds, maintaining the pressure for 58-62 seconds, increasing the pressure to 46-48MPa within 10-20 seconds, maintaining the pressure for 215-230 seconds, and finally reducing the pressure to 0 within 30-45 seconds;
the heating power curve is: the heating is started at 45-55 seconds, the heating power is 4.8-5.2Kw, the sudden drop is 4.1-4.3Kw after the heat preservation is carried out for 58-62 seconds, and the sudden drop is 0 after the heat preservation is carried out for 115-125 seconds.
Preferably, the heating power curve is: heating was started at 50 seconds, the heating power was 5Kw, the temperature was maintained for 60 seconds, then the temperature suddenly dropped to 4.1Kw, and then the temperature was maintained for 120 seconds, and then the temperature suddenly dropped to 0.
In order to obtain the best quality product, the catalyst adopted in the invention comprises a boron-containing compound;
in order to adapt and stabilize the process method, the pyrophyllite in the synthetic block adopted by the invention is prepared by the following method and raw materials: the south Africa black pyrophyllite is mixed according to the large, medium and small particle sizes of 5:4:1, the particle sizes of the large, medium and small particles are 2mm, 1mm and 0.3mm respectively, 10% of sodium silicate cement additive is added for powder compaction forming, pressure transmission and heat insulation performance are guaranteed to meet the process requirements, and the problem of cracking hammer consumption in the high-temperature and high-pressure synthesis process of the large-cavity resin diamond is effectively solved.
The invention has the beneficial effects that: the process method can be widely used for producing the large-cavity single block, improves the yield of the single block and the capacity of equipment, and the polycrystalline diamond produced by the process is in a mosaic or mosaic shape, and has higher thermal stability, high grinding efficiency and excellent self-sharpening performance. In addition, the power is suddenly reduced after heating for 60 seconds, and the self-sharpening property of the resin diamond is effectively improved.
Drawings
FIG. 1 is a pressure power time plot of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1
As shown in fig. 1, a process for improving the productivity of a resin diamond monolith comprises the following steps: putting the synthetic block filled with the catalyst and the raw materials into a press, and synthesizing the resin diamond at high temperature and high pressure, wherein the pressure curve is as follows: increasing the pressure to 42-45MPa within 58-65 seconds, maintaining the pressure for 58-62 seconds, increasing the pressure to 46-48MPa within 10-20 seconds, maintaining the pressure for 215-230 seconds, and finally reducing the pressure to 0 within 30-45 seconds;
the heating power curve is: heating was started at 50 seconds, the heating power was 5Kw, the temperature was maintained for 60 seconds, then the temperature suddenly dropped to 4.1Kw, and then the temperature was maintained for 120 seconds, and then the temperature suddenly dropped to 0.
Example 2
As shown in fig. 1, a process for improving the productivity of a resin diamond monolith comprises the following steps: putting the synthetic block filled with the catalyst and the raw materials into a press, and synthesizing the resin diamond at high temperature and high pressure, wherein the pressure curve is as follows: increasing the pressure to 42-45MPa within 58-65 seconds, maintaining the pressure for 58-62 seconds, increasing the pressure to 46-48MPa within 10-20 seconds, maintaining the pressure for 215-230 seconds, and finally reducing the pressure to 0 within 30-45 seconds;
the heating power curve is: heating was started at 50 seconds, the heating power was 5Kw, the temperature was maintained for 60 seconds, then the temperature suddenly dropped to 4.1Kw, and then the temperature was maintained for 120 seconds, and then the temperature suddenly dropped to 0.
In order to obtain the best quality product, the catalyst adopted in the invention comprises a boron-containing compound;
in order to adapt and stabilize the process method, the pyrophyllite in the synthetic block adopted by the invention is prepared by the following method and raw materials: the south Africa black pyrophyllite is mixed according to the large, medium and small particle sizes of 5:4:1, the particle sizes of the large, medium and small particles are 2mm, 1mm and 0.3mm respectively, 10% of sodium silicate cement additive is added for powder compaction forming, pressure transmission and heat insulation performance are guaranteed to meet the process requirements, and the problem of cracking hammer consumption in the high-temperature and high-pressure synthesis process of the large-cavity resin diamond is effectively solved.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (2)
1. A process method capable of improving the productivity of a resin diamond single block comprises the following steps: putting the synthetic block filled with the catalyst and the raw materials into a press, and synthesizing the resin diamond at high temperature and high pressure, which is characterized in that: the pressure curve is as follows: increasing the pressure to 42-45MPa within 58-65 seconds, maintaining the pressure for 58-62 seconds, increasing the pressure to 46-48MPa within 10-20 seconds, maintaining the pressure for 215-230 seconds, and finally reducing the pressure to 0 within 30-45 seconds;
the heating power curve is: the heating is started at 45-55 seconds, the heating power is 4.8-5.2Kw, the sudden drop is 4.1-4.3Kw after the heat preservation is carried out for 58-62 seconds, and the sudden drop is 0 after the heat preservation is carried out for 115-125 seconds.
2. The process method capable of improving the productivity of a resin diamond monolith according to claim 1, wherein: the heating power curve is as follows: heating was started at 50 seconds, the heating power was 5Kw, the temperature was maintained for 60 seconds, then the temperature suddenly dropped to 4.1Kw, and then the temperature was maintained for 120 seconds, and then the temperature suddenly dropped to 0.
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| CN201610761899.8A CN106237931B (en) | 2016-08-30 | 2016-08-30 | Technological method capable of improving productivity of resin diamond single block |
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| CN201610761899.8A CN106237931B (en) | 2016-08-30 | 2016-08-30 | Technological method capable of improving productivity of resin diamond single block |
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| CN106237931B true CN106237931B (en) | 2021-09-21 |
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| CN109806812A (en) * | 2019-03-25 | 2019-05-28 | 河南省力量钻石股份有限公司 | A kind of black pyrophyllite material and preparation method thereof |
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| US20040018137A1 (en) * | 2001-08-23 | 2004-01-29 | General Electric Company | Boron doped blue diamond and its production |
| CN101837267B (en) * | 2010-06-02 | 2012-05-02 | 山东聊城昌润超硬材料有限公司 | Prismatic crystal diamond synthesizing process |
| KR20120128524A (en) * | 2011-05-17 | 2012-11-27 | 서울대학교산학협력단 | Preparation process of polymer nanocomposite containing fully exfoliated nano-filler and its nanocomposite |
| CN103846058A (en) * | 2012-11-28 | 2014-06-11 | 周存文 | Synthesis process of ultrafine-grade diamond |
| CN203342758U (en) * | 2013-07-04 | 2013-12-18 | 河南金六方超硬材料有限公司 | Self-sharpening resin bond diamond synthesis block |
| CN103357353B (en) * | 2013-07-04 | 2015-03-25 | 河南金六方超硬材料有限公司 | Synthesis process of self-sharpening resin diamond |
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Address after: 454763 Henan FeiMeng Diamond Industry Co., Ltd., Qianyao village, Chengbo Town, Mengzhou City, Jiaozuo City, Henan Province Patentee after: Henan FeiMeng diamond Co.,Ltd. Address before: 454763 Henan FeiMeng Diamond Industry Co., Ltd., Qianyao village, Chengbo Town, Mengzhou City, Jiaozuo City, Henan Province Patentee before: Henan Famous Diamond Industrial Co.,Ltd. |