CN101890320A - Bidirectional pressing diamond synthesizing column - Google Patents
Bidirectional pressing diamond synthesizing column Download PDFInfo
- Publication number
- CN101890320A CN101890320A CN 201010240019 CN201010240019A CN101890320A CN 101890320 A CN101890320 A CN 101890320A CN 201010240019 CN201010240019 CN 201010240019 CN 201010240019 A CN201010240019 A CN 201010240019A CN 101890320 A CN101890320 A CN 101890320A
- Authority
- CN
- China
- Prior art keywords
- synthetic
- column
- bidirectional pressing
- diamond synthesizing
- post
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 27
- 239000010432 diamond Substances 0.000 title claims abstract description 27
- 230000002194 synthesizing effect Effects 0.000 title claims abstract description 19
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 13
- 238000003825 pressing Methods 0.000 title claims abstract description 13
- 239000010459 dolomite Substances 0.000 claims description 11
- 229910000514 dolomite Inorganic materials 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 abstract description 16
- 238000003786 synthesis reaction Methods 0.000 abstract description 16
- 230000005540 biological transmission Effects 0.000 description 15
- 238000010438 heat treatment Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000009413 insulation Methods 0.000 description 6
- 229910052903 pyrophyllite Inorganic materials 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 1
- 229910001573 adamantine Inorganic materials 0.000 description 1
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010443 kyanite Substances 0.000 description 1
- 229910052850 kyanite Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a bidirectional pressing diamond synthesizing column, and belongs to the technical field of diamond synthesis. The synthesizing column is divided into an upper part and a lower part, and the middle of the combined part of the synthesizing column is upwards and downwards provided with chutes respectively. The synthesizing column for synthesizing diamond can reduce the synthesizing pressure and reduce the proportion of inferior products, and has good synthesizing effect.
Description
Technical field
The invention belongs to the diamond synthesis technical field, particularly a kind of bidirectional pressing diamond synthesizing column.
Background technology
Diamond synthesis block under the superhigh-temperature and-pressure (as shown in Figure 1) is by the synthetic post 5 of the used raw material of diamond synthesis, i.e. graphite and catalyst mixed powder and be positioned at the conducting steel ring 1 at synthetic post 5 two ends and blocks that heating element heater 3, insulation component 4, the pressure transmission sealing medium 2 of synthetic post 5 peripheries assemble according to certain way.Assembling mode is from outside to inside: the peripheral pressure transmission sealing medium 2 that adopts is as the pressure transmission encapsulant, conducting steel ring 1 heating of switching on is adopted at two ends, conducting steel ring 1 closely contacts with its inboard heating element heater 3, by conducting steel ring heating element heater 3 itself is generated heat during energising, pass through then and the heating element heater 3 inboard insulation components 4 that closely contact, see through insulation component 4 heat is reached and the insulation component 4 inboard synthetic posts 5 that closely contact, make graphite under superhigh-temperature and-pressure, be converted into diamond.In building-up process, though the pyrophyllite as the pressure transmission sealing medium has good pressure transmission performance, itself can undergo phase transition under superhigh-temperature and-pressure, and promptly the crystallization water in the pyrophyllite can impel pyrophyllite to be phase-changed into kyanite to add coesite, volume contraction, the pressure transmission performance reduces greatly.Is the process that growth of diamond particles is grown up, is just needing to transmit sufficient pressure this moment and supplementing the nutrients and impel it to grow up that the reduction significantly of pressure transmission performance will cause the synthesis pressure transmission not entered in the later stage of diamond synthesis.Add in recent years the superhard material industry along with the continuous progress of technical merit, the synthetic cavity of cubic hinge press synthesis device diamond synthesis enlarges rapidly, from the assembling mode of synthetic piece, the pressure distribution situation that synthetic post presents from outside to inside is more and more littler (being the pressure distribution inequality), thereby causes interior void.Make diamond particles air entrapment, the impurity of generation many, defective is many, and particle is little, has a strong impact on adamantine product quality.If raising synthesis pressure simply, because pyrophyllite itself undergoes phase transition under superhigh-temperature and-pressure, produce volume contraction, the pressure transmission performance reduces greatly, and pressure passes not enter, and product quality can't obtain obvious variation, and can directly have influence on the service life of cubic hinge press synthesis device, severe patient directly causes the equipment blast of rupturing under HTHP, not only improved production cost greatly, but also has bigger potential safety hazard.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can reduce synthesis pressure, bidirectional pressing diamond synthesizing column that the pressure transmission performance is good.
For reaching above-mentioned purpose, the technical solution used in the present invention is:
A kind of bidirectional pressing diamond synthesizing column, synthetic post are divided into two parts up and down, are provided with vertical slot respectively up and down in the middle of the synthetic post binding site.
Synthetic post two parts up and down equates.
Groove is identical with synthetic post shapes and concentric with synthetic post.
The volume of groove accounts for 10%～50% of synthetic column volume.
Be filled with pyrophillite and dolomite complex media in the groove.
The ratio of dolomite and pyrophillite is 1: 1～9: 1.
Among the present invention, synthetic post is divided into two parts up and down, be provided with vertical slot respectively up and down in the middle of the synthetic post binding site, synthetic post two parts up and down equates, groove is identical with synthetic post shapes and concentric with synthetic post, the volume of groove account for synthetic column volume 10%～50% (volume is too small, and the counterpressure situation reduces; Volume is excessive, influence output) be filled with pyrophillite and dolomite complex media in the groove, the ratio of dolomite and pyrophillite is 1: 1～9: 1, adopt such structure, synthetic post synthesizes when transforming under superhigh-temperature and-pressure, not only be subjected to six external carbide alloy applied forces, simultaneously since the pyrophillite that hollow part is filled and dolomite complex media thermal coefficient of expansion greatly and the pressure transmission performance good (thermal coefficient of expansion of dolomite is big, is 2.7 * 10
-5, do not undergo phase transition under the HTHP; The pressure transmission performance of pyrophyllite is good), when six carbide alloy are exerted pressure, the pyrophillite and the dolomite complex media expanded by heating of being filled in the groove, volume increases, add a fraction of pressure transmission, also begin to exert pressure to synthetic post, whole process is equivalent to the effect that synthetic each orientation of post all is subjected to two-way compacting.This effect not only can be subdued six external carbide alloy applied forces of a part, thereby prolongs the service life of cubic hinge press synthesis device, reduces synthesis pressure; And can make the suffered power uniformity in synthetic each orientation of post, and subdue empty situation in the synthetic post, thereby reduced the ratio of material inferior (junior diamond), improved the ratio of quality product.
Utilize the present invention to synthesize post, with 60 millimeters synthetic posts of diameter is example, guaranteeing under synthetic 300 carats of positive and negative 10 carats the situations of output of single: the diamond synthesis pressure is reduced to 51～54Mpa by 58 original～60Mpa, and material ratio inferior has dropped to 30%～35% by original 40%～45%.
Description of drawings
Fig. 1 is a diamond synthesis block structural representation in the prior art;
Fig. 2 is the diamond synthesis block structural representation that utilizes the present invention to assemble.
The specific embodiment
As shown in Figure 2, a kind of bidirectional pressing diamond synthesizing column, synthetic post 6 is divided into two parts up and down, is provided with vertical slot 7 respectively up and down in the middle of synthetic post 6 binding sites.Synthetic post 6 about two parts equal.Groove 7 is identical with synthetic post 6 shapes and concentric with synthetic post 6.The volume of groove 7 accounts for 10%～50% of synthetic post 6 volumes.Be filled with pyrophillite and dolomite complex media 8 in the groove 7.The ratio of dolomite and pyrophillite is 1: 1～9: 1.Synthetic post 6 outside insulation components 4 closely contact with synthetic post 6, insulation component 4 outsides are heating element heater 3, synthetic post 6 two ends are conducting steel ring 1, are provided with pressure transmission sealing medium 2 between conducting steel ring 1 and the heating element heater 3, and conducting steel ring 1 outside is arranged with pressure transmission sealing medium 2.
Claims (6)
1. a bidirectional pressing diamond synthesizing column is characterized in that, synthetic post is divided into two parts up and down, is provided with vertical slot respectively up and down in the middle of the synthetic post binding site.
2. bidirectional pressing diamond synthesizing column as claimed in claim 1 is characterized in that, synthetic post two parts up and down equates.
3. bidirectional pressing diamond synthesizing column as claimed in claim 1 or 2 is characterized in that, groove is identical with synthetic post shapes and concentric with synthetic post.
4. bidirectional pressing diamond synthesizing column as claimed in claim 3 is characterized in that, the volume of groove accounts for 10%～50% of synthetic column volume.
5. bidirectional pressing diamond synthesizing column as claimed in claim 4 is characterized in that, is filled with pyrophillite and dolomite complex media in the groove.
6. bidirectional pressing diamond synthesizing column as claimed in claim 5 is characterized in that, the ratio of dolomite and pyrophillite is 1: 1～9: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010240019 CN101890320A (en) | 2010-07-29 | 2010-07-29 | Bidirectional pressing diamond synthesizing column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010240019 CN101890320A (en) | 2010-07-29 | 2010-07-29 | Bidirectional pressing diamond synthesizing column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101890320A true CN101890320A (en) | 2010-11-24 |
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ID=43099759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010240019 Pending CN101890320A (en) | 2010-07-29 | 2010-07-29 | Bidirectional pressing diamond synthesizing column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101890320A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214566A (en) * | 2015-10-09 | 2016-01-06 | 湖北洛克泰克仪器有限公司 | A kind of bidirectional piston cylinder type superhigh-temperature and-pressure device and using method thereof |
| CN105289416A (en) * | 2015-10-20 | 2016-02-03 | 六盘水师范学院 | Directly-heating type expansion high-pressure synthesis equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5773140A (en) * | 1994-05-06 | 1998-06-30 | General Electric Company | Supported polycrystalline compacts having improved physical properties |
| CN2553882Y (en) * | 2002-07-02 | 2003-06-04 | 河南中南工业有限责任公司 | Powder catalyst structure of synthetic high-grade diamond |
-
2010
- 2010-07-29 CN CN 201010240019 patent/CN101890320A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5773140A (en) * | 1994-05-06 | 1998-06-30 | General Electric Company | Supported polycrystalline compacts having improved physical properties |
| CN2553882Y (en) * | 2002-07-02 | 2003-06-04 | 河南中南工业有限责任公司 | Powder catalyst structure of synthetic high-grade diamond |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214566A (en) * | 2015-10-09 | 2016-01-06 | 湖北洛克泰克仪器有限公司 | A kind of bidirectional piston cylinder type superhigh-temperature and-pressure device and using method thereof |
| CN105289416A (en) * | 2015-10-20 | 2016-02-03 | 六盘水师范学院 | Directly-heating type expansion high-pressure synthesis equipment |
| CN105289416B (en) * | 2015-10-20 | 2017-05-10 | 六盘水师范学院 | A direct heating expansion high pressure synthesis equipment |
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Application publication date: 20101124 |