CN107715799A - The device and method that diamond blasting extrusion is grown up - Google Patents
The device and method that diamond blasting extrusion is grown up Download PDFInfo
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- CN107715799A CN107715799A CN201610658090.2A CN201610658090A CN107715799A CN 107715799 A CN107715799 A CN 107715799A CN 201610658090 A CN201610658090 A CN 201610658090A CN 107715799 A CN107715799 A CN 107715799A
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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
- B01J3/08—Application of shock waves for chemical reactions or for modifying the crystal structure of substances
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Abstract
The invention provides the device and method that a kind of diamond blasting extrusion is grown up.The device includes substrate, extruding flies plate and pulley；Thereon is provided with the groove for containing bortz powder, extruding flies the connection end of plate and one end of substrate connects, extruding flies the movable end of plate and pulley connects and flies angle between plate and substrate by pulley regulation extruding, low explosive is arranged on extruding and flown on plate, and detonator is fixed on the bottom of low explosive.Drive to extrude using low explosive and fly plate shock little particle diamond dust, the speed for flying plate is up to 7km/s, and when the winged plate of extruding contacts with bortz powder, caused high temperature, high pressure melt bortz powder, aggregation formation bulky grain micron order diamond.The diamond blasting extrusion that the present invention uses is grown up the diamond particles high conversion rate of method, and the little particle diamond that can reach more than 25% becomes bulky grain；Produced using powdery emulsifying explosive and wood powder, technique is simple, and cost is low, and easily amplifies yield, facilitates industrial production.
Description
Technical field
The present invention relates to explosive welding and high temperature, high-pressure synthesis technical field, more particularly to a kind of synthesis of blasting extrusion are big
The device and method of particle micron diamond.
Background technology
Polycrystalline diamond prepared by the present invention is superhard material, the expensive goods belonged in diamond, has ultra-high purity,
The polishing effect of ultraprecise, the ultraprecise for being widely used in magnetic head, hard disk, jewel, hard glass, ceramics and hard alloy are thrown
Light；The reinforcing agent of the plated film of the additive of lubricant or machine oil, metal die, instrument, part etc., rubber or plastics, IT
Product encapsulating material and magnetic recording magnetic sound recording system；Launching site and the component of cvd film material.
At present, the method for artificially synthesizing diamond mainly has the methods of static pressure method, Detonation Process.Static pressure method diamond synthesis,
Make graphite that phase occur using high temperature caused by Static pressure caused by hydraulic pressure cubic hinge press and electric furnace and under catalyst action
Change is converted into diamond, although technique is simple, Chen Bengao, and it is mainly used in the low-end markets such as sand paper.Detonation synthesis gold
Hard rock, it is to utilize the carbon in oxygen negative explosive that coalescence and phase transformation generation nanometer chi occur under the thermodynamic condition of explosive detonation
Very little diamond.Chinese patent CN01114454.8 proposes a kind of method of detonation synthesis Nano diamond, and its product is special
Point is that particle size concentrates on 1~100nm sections, and particle profile is spherical in shape, but is easily reunited.Patent CN101112678A is proposed
A kind of method of the Explosive detonation diamond of the additional carbon in explosive, micron diamond, but the grain of its product is successfully made
Footpath is widely distributed.Because particle size itself is smaller, thus it is relatively difficult to carry out grading to product.
The content of the invention
It is an object of the invention to provide the device and method that a kind of diamond blasting extrusion is grown up, the apparatus and method can
So that diamond particle diameter increases.
It is as follows it is an object of the invention to provide technical scheme to realize：
The device that a kind of diamond blasting extrusion is grown up, the device includes substrate, extruding flies plate and pulley；Thereon
The groove for containing bortz powder is provided with, the one end for extruding the connection end for flying plate and substrate connects, and extrudes the movable end for flying plate
It is connected with pulley and angle between plate and substrate is flown by pulley regulation extruding, low explosive is arranged on extruding and flown on plate, thunder
Pipe is fixed on the bottom of low explosive.
Further, substrate uses 45# steel, extrudes winged plate and uses 45# steel.
The method of the synthesis bulky grain micron diamond of the present invention comprises the steps of successively：
(a) low explosive is laid in into extruding to fly on plate；
(b) little particle diamond dust is paved with groove；
(c) it is at an angle of θ with substrate by pulling pulley regulation extruding to fly plate；
(d) blasting cap initiation low explosive is started so that extruding flies plate and extrudes substrate under explosive force effect, is contained
The crude product of bulky grain micron diamond；
(e) the crude product purification that will be obtained in (d), obtains bulky grain micron diamond.
Further, in step (a), medicine layer thickness H2For 20mm.
Further, in step (c), described angle, θ is 30 °~45 °.
The low explosive used in the present invention is 90% powdery ammonium ladder detonator and 10% wood powder, and low explosive
(4) explosion velocity is 2000m/s.The particle diameter of the powdery ammonium ladder detonator is between 1~2 μm, and the particle diameter of wood powder is between 5~10 μm.
The size of little particle micron diamond in the present invention between 0.46~3.21 μm, bulky grain micron diamond
Size is between 5~10 μm.
The present invention compared with prior art, its remarkable advantage：
(1) product of the invention is bulky grain micron diamond, and particle diameter distribution is narrower.
(2) present invention is grown up technology using blasting extrusion, one-shot forming, and industry is simply, it is possible to achieve industrialized production.
(3) the driving explosive that the present invention uses is AN-TNT containing explosive and the mixture of wood powder, cheap, wide material sources.
(4) the winged harden structure of substrate and extruding that the present invention uses is simple, cheap same using common stainless steel material
When it is easy to process.
Brief description of the drawings
Fig. 1 is the structural representation for the device that diamond blasting extrusion of the present invention is grown up；
When Fig. 2 is that the winged plate of extruding and substrate angle are 30 ° in the present invention, the XRD of product；
When Fig. 3 is that the winged plate of extruding and substrate angle are 30 ° in the present invention, the grain size distribution of product；
When Fig. 4 is that the winged plate of extruding and substrate angle are 30 ° in the present invention, the scanning electron microscopic picture of product；
Fig. 5 is the grain size distribution of diamond raw material in the present invention；
When Fig. 6 is that the winged plate of extruding and substrate angle are 45 ° in the present invention, the SEM figures of product.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
The present invention be by following device come be realize：
As shown in figure 1, the device that a kind of diamond blasting extrusion is grown up, the device includes substrate 1, extruding flies plate 3 and sliding
Wheel 6；Substrate 1 is provided with the groove 2 for containing bortz powder above, and the connection end for extruding winged plate 3 is connected with one end of substrate 1,
Extruding flies the movable end of plate 3 and pulley 6 connects and flies angle, low blasting speed between plate 3 and substrate 1 by the regulation extruding of pulley 6 and fries
Medicine 4 is arranged on extruding and flown on plate 3, and detonator 5 is fixed on the bottom of low explosive 4.
The angle for being used to control extruding to fly between plate 3 and pulley 6 in the present invention is realized by pulley, is used in addition
Realize that the device of stretching all can be used in the device, repeat no more here.
Wherein, the length × width × height size of substrate 1 is：800×250×45mm；Extruding flies the length × width × height size of plate 3
For：490×190×10mm；The length × width × height size of groove 2 is：500×200×2mm.Substrate 1 is 45# steel, described extruding
It is 45# steel to fly plate 3.
Embodiment 1：θ=30 °
Weigh 90g AN-TNT containing explosives and 10g wood powders are well mixed stand-by, mixed low explosive is laid in extruding and flies plate
On, medicine layer thickness H2For 20mm；Little particle diamond dust, thickness H are paved with groove4For 2mm；Extruding is flown into plate and leans against base
On plate, pulley regulation extruding is pulled to fly plate with substrate into 30 °；Fly plate connection end blasting cap initiation low explosive in extruding, obtain
Obtain the product containing bulky grain micron diamond.Explosion product is collected, crosses 100 mesh sieve, removes wherein larger impurity, such as
Plain conductor, adhesive plaster relic etc..Solution drying has just been obtained to the head product of bulky diamond.Dilute nitre is added in head product
Acid reacts 3 hours at 80 DEG C, is washed with deionized to neutrality, is put into baking oven and dries, produces bulky grain micron diamond.
Sample is detected with D8ADVANCE type X-ray diffractometers.As shown in Fig. 2 the diffracting spectrum characteristic peak of sample
At 43 °, 75 °, 91 °, it was demonstrated that the diamond of synthesis is cubic system diamond.Electricity is scanned with JEOLJSM-6380LV types Flied emission
Sem observation sample, as shown in figure 3, its appearance has sharp corners and irregular contour；Surveyed with BT-9300H laser fineness gages
Its particle diameter is tried, as shown in figure 4, its size distribution section is in 5~10 μ ms, median particle diameter d50=6.18 μm.And to small
The test of particles diamonds powder, as shown in figure 5, its size distribution section, in 0.46~3.21 μ m, median particle diameter is
d50=1.16 μm.
Tested more than, can prove that the apparatus and method can synthesize bulky grain micron diamond, and particle size
Narrow distribution.
Embodiment 2：θ=45 °
Weigh 90g AN-TNT containing explosives according to low explosive formula rate and 10g wood powders be well mixed it is stand-by.Will be mixed low
Detonation-rate explosive is laid in extruding and flown on plate, medicine layer thickness H2For 20mm；Little particle diamond dust, thickness H are paved with groove4
For 2mm；Extruding is flown into plate to lean against on substrate, pulling pulley to adjust, extruding flies plate and substrate is at 45 °；Fly plate connection end in extruding to use
Blasting cap initiation low explosive, obtain the product containing bulky grain micron diamond.Explosion product is collected, crosses 100 mesh sieve,
Remove wherein larger impurity, such as plain conductor, adhesive plaster relic etc..Solution drying the first of bulky diamond has just been obtained into
Product.Dust technology is added in head product to react 3 hours at 80 DEG C, is washed with deionized to neutrality, is put into baking oven and dries
It is dry, produce bulky grain micron diamond.
Sample is detected with D8ADVANCE type X-ray diffractometers.The diffracting spectrum characteristic peak of sample 43 °, 75 °,
91 °, it was demonstrated that the diamond of synthesis is cubic system diamond.With JEOLJSM-6380LV type field emission microscopy observation samples
Product, as shown in fig. 6, its appearance has sharp corners and irregular contour；Tested with Bettersize2000 laser fineness gages,
Its size distribution section is in 1.48~3.94 μ ms, median particle diameter d50=2.23 μm.
Tested more than, can prove that the apparatus and method can synthesize bulky grain micron diamond, and particle size
It can be controlled by angle.
Claims (9)
- A kind of 1. device that diamond blasting extrusion is grown up, it is characterised in that the device includes substrate (1), extruding flies plate (3), With pulley (6)；Substrate (1) is provided with the groove (2) for containing bortz powder above, extrudes the connection end for flying plate (3) and substrate (1) one end connection, extrude fly plate (3) movable end be connected with pulley (6) and by the winged plate (3) of pulley (6) regulation extruding and Angle between substrate (1), low explosive (4) are arranged on extruding and flown on plate (3), and detonator (5) is fixed on low explosive (4) Bottom.
- 2. the device that diamond blasting extrusion according to claim 1 is grown up, it is characterised in that described substrate (1) Length × width × height size is：800×250×45mm；Extruding flies plate (3) length × width × height size：490×190×10mm；It is recessed Groove (2) length × width × height size is：500×200×2mm.
- 3. the device that diamond blasting extrusion according to claim 1 is grown up, it is characterised in that described substrate (1) is adopted With 45# steel, described extruding flies plate (3) and uses 45# steel.
- A kind of method 4. diamond blasting extrusion based on claim 1-3 described devices is grown up, it is characterised in that described gold The step of method that hard rock blasting extrusion is grown up, is specific as follows：(a) low explosive (4) is laid in into extruding to fly on plate (3)；(b) it is paved with little particle diamond dust in groove (2)；(c) it is at an angle of θ with substrate (1) by pulling pulley (6) regulation extruding to fly plate (3)；(d) detonator (5) detonation low explosive (4) is started so that extruding flies plate (3) and extrudes substrate (2) under explosive force effect, Obtain the crude product containing bulky grain micron diamond；(e) the crude product purification that will be obtained in (d), obtains bulky grain micron diamond.
- The method 5. diamond blasting extrusion according to claim 4 is grown up, it is characterised in that in step (a), medicine thickness degree H2For 20mm.
- The method 6. diamond blasting extrusion according to claim 4 is grown up, it is characterised in that in step (c), described angle It is 30 °~45 ° to spend θ.
- The method 7. diamond blasting extrusion according to claim 4 is grown up, it is characterised in that low explosive (4) is 90% powdery ammonium ladder detonator and 10% wood powder, described low explosive (4) explosion velocity are 2000m/s.
- The method 8. diamond blasting extrusion according to claim 7 is grown up, it is characterised in that described powdery ammonium ladder detonator Particle diameter between 1~2 μm, the particle diameter of wood powder is between 5~10 μm.
- The method 9. diamond blasting extrusion according to claim 4 is grown up, it is characterised in that described little particle micron chickens The size of hard rock is between 0.46~3.21 μm, and the size of bulky grain micron diamond is between 5~10 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610658090.2A CN107715799A (en) | 2016-08-11 | 2016-08-11 | The device and method that diamond blasting extrusion is grown up |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610658090.2A CN107715799A (en) | 2016-08-11 | 2016-08-11 | The device and method that diamond blasting extrusion is grown up |
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| CN107715799A true CN107715799A (en) | 2018-02-23 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1115650A (en) * | 1964-05-19 | 1968-05-29 | Du Pont | Shock-sintering of diamond |
| FR2451790A1 (en) * | 1979-03-20 | 1980-10-17 | Creusot Loire | Explosion work hardening of superalloy powders - where explosive compresses tube contg. powder, which is then used to mfr. gas turbine components compressor discs |
| JPH08259365A (en) * | 1995-03-28 | 1996-10-08 | Nippon Kayaku Co Ltd | Granular explosive |
| JP2003117379A (en) * | 2001-10-11 | 2003-04-22 | National Institute For Materials Science | Method for synthesizing hexagonal diamond |
| CN103539594A (en) * | 2013-09-29 | 2014-01-29 | 湖北帅力化工有限公司 | Explosive special for powdery emulsion explosive welding and preparation method thereof |
| CN205925641U (en) * | 2016-08-11 | 2017-02-08 | 南京理工大学 | Device that diamond explosion extrusion is grown up |
-
2016
- 2016-08-11 CN CN201610658090.2A patent/CN107715799A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1115650A (en) * | 1964-05-19 | 1968-05-29 | Du Pont | Shock-sintering of diamond |
| FR2451790A1 (en) * | 1979-03-20 | 1980-10-17 | Creusot Loire | Explosion work hardening of superalloy powders - where explosive compresses tube contg. powder, which is then used to mfr. gas turbine components compressor discs |
| JPH08259365A (en) * | 1995-03-28 | 1996-10-08 | Nippon Kayaku Co Ltd | Granular explosive |
| JP2003117379A (en) * | 2001-10-11 | 2003-04-22 | National Institute For Materials Science | Method for synthesizing hexagonal diamond |
| CN103539594A (en) * | 2013-09-29 | 2014-01-29 | 湖北帅力化工有限公司 | Explosive special for powdery emulsion explosive welding and preparation method thereof |
| CN205925641U (en) * | 2016-08-11 | 2017-02-08 | 南京理工大学 | Device that diamond explosion extrusion is grown up |
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