CN206912247U - Can pressure release type explosive sintering nanometer aluminium bar device - Google Patents
Can pressure release type explosive sintering nanometer aluminium bar device Download PDFInfo
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- CN206912247U CN206912247U CN201720691307.XU CN201720691307U CN206912247U CN 206912247 U CN206912247 U CN 206912247U CN 201720691307 U CN201720691307 U CN 201720691307U CN 206912247 U CN206912247 U CN 206912247U
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Abstract
The utility model provide it is a kind of can pressure release type nanometer aluminium bar explosive sintering device and method.The device includes upper end plug, jacket, strike pipe, outer tube and pedestal；Wherein, pedestal is provided with pressure relief, and the pressure relief is provided with the groove for being used for gas in compressing powder for the top center of pedestal, and is sequentially provided with pressure release piece, pad at the top of pedestal；In addition, the top of upper end plug is arranged to the pyramidal structure for voltage stabilizing during propagation of explosion.In the utility model can the device of pressure release type nanometer aluminium bar explosive sintering product is made is that crystallite dimension reaches nano level aluminium bar, particle diameter distribution is narrow, hardness and consistency are high；During prepared by the explosive sintering method that the utility model uses, gas of the tagger between powder particle in by compacting process on pedestal ruptures when impacting, it is delivered to by the centre bore of pad in the groove of pedestal, form gases at high pressure, the generation of centre bore and shedding for powder can effectively be prevented, and technique is simple, cost is low, facilitates industrial production.
Description
Technical field
The utility model is related to powder explosion sintering equipment, and in particular to it is a kind of can pressure release type explosive sintering nanometer aluminium bar
Device.
Background technology
Explosive sintering alloy nano-powder is in powder surface, when extremely short using Shock Wave caused by explosive detonation
A kind of interior materials processing technology that high temperature hot melt, high pressure sintering formation occur in particle surface.With traditional hot pressed sintering and
The methods of HIP sintering, is compared, and explosive sintering alloy nano-powder has the advantages of its is unique.(1) possess it is voltage resistance, can
To sinter out almost closely knit material.The current sintered density about amorphous cobalt-base alloys, crystallite aluminium and its alloy has exceeded
99% solid density；(2) possess molten rapid cooling soon, be advantageous to keep the excellent specific property of powder.Due to shock wave loading it is instantaneous
Property, the time that particle is risen to from normal temperature needed for melting temperature during explosive sintering is extremely short, usually Microsecond grade, and this is only limitted to temperature rise
Particle surface, and low-temperature condition is remained in that inside particle, cooling " quenching " will be played to interface after forming " sintering ", it is this
Mechanism can prevent crystal grain " growing up ", make it have the physical characteristic that crystal grain is small, is evenly distributed, therefore can keep it in nanometer
The excellent specific property of material under graininess, such as higher intensity, hardness, magnetic performance and corrosion resistance.
At present, Chen Pengwan, Zhou Qiang et al. disclose a kind of point in the patent of invention of Patent No. 201210096266.1
Body formula high temperature preheating smashed district sintering equipment, this mode of gas in powder is mainly removed by high temperature preheating mode, but filled
Put in warm, agglomeration may occur for powder particle, and to the grainiess of material, mechanical property has very big shadow
Ring.
Utility model content
The purpose of this utility model be to provide it is a kind of can pressure release type explosive sintering nanometer aluminium bar device and method, the dress
Put and method can to prepare microstructure be nano level high intensity aluminium bar.
To realize that it is as follows that the purpose of this utility model provides technical scheme：
It is a kind of can pressure release type nanometer aluminium bar explosive sintering device and method, the device include upper end plug, jacket, strike
Pipe, outer tube, pressure release piece and pedestal；Upper end plug, jacket, strike pipe and pedestal are mutually fitted close, and form the closed appearance of column
Device, gap be present between jacket and strike pipe, the gap between outer tube and strike pipe is used for containing explosive, at the top of outer tube in
Booster gains and detonator are fixed in heart position, it is characterised in that and the pedestal of the device is provided with pressure relief, wherein, the top of pedestal
Portion center is provided with the groove for being used for gas in compressing powder, and is sequentially provided with pressure release piece, pad at the top of pedestal；In addition, upper end is blocked up
The top of head is arranged to the pyramidal structure for voltage stabilizing during propagation of explosion.
Further, jacket, strike pipe, upper end plug and pedestal are 45# steel, and outer tube is PVC engineering plastics.
The method of sintering nanometer aluminium bar of the present utility model comprises the following steps that：
(a) jacket, strike pipe and pedestal are assembled, is put into together with nanometer aluminium powder and upper end plug full of protective atmosphere
In closed glove box；
(b) nanometer aluminium powder is uniformly added into jacket, is compacted, and cover upper end plug；
(c) sintering equipment is taken out out of glove box；
(d) sintering equipment and outer tube are assembled, and adds low explosive wherein；
(e) detonator triggering powder column detonation low explosive is started, strike pipe hits jacket under explosive force effect, and compacting is received
Rice aluminium powder, obtains nanometer aluminium bar；
(f) cutting strike pipe and jacket, obtain required nanometer aluminium bar.
Further, in step (b), aluminium powder loads compactness and reaches 40%-60%.
Further, the medicine thickness degree L4 described in step (d) is 13.5mm.
The low explosive used in the utility model is powdery ammonium ladder detonator, and degree of packing is 0.9g/cm3.The powder
The particle diameter of shape AN-TNT containing explosive is between 1~2 μm.
The size of aluminum particle in the utility model is between 60~140nm, the crystallite dimension master of the aluminium bar after sintering
Concentrate between 60~500nm, there is few portion crystal to be agglomerated into bulky grain.
The utility model compared with prior art, its remarkable advantage：
(1) product of the present utility model is that crystallite dimension reaches nano level aluminium bar, and particle diameter distribution is narrower.
(2) the utility model uses explosive sintering technology, and one-shot forming, industry is simply, it is possible to achieve industrialized production.
(3) the driving explosive that the utility model uses is AN-TNT containing explosive, cheap, wide material sources.
(4) the utility model uses plug, jacket and strike tubular construction are simple, using common stainless steel material,
It is cheap while easy to process.
Brief description of the drawings
Fig. 1 be the utility model can pressure release type nanometer aluminium bar explosive sintering device structural representation；
Fig. 2 is the SEM figures of nanometer aluminium powder in the utility model；
Fig. 3 is the grain size distribution of nanometer aluminium powder in the utility model；
Fig. 4 is the pictorial diagram of sintered bar product in the utility model；
Fig. 5 is the metallographic microscope image of sintered bar product in the utility model；
Fig. 6 is the scanning electron microscope (SEM) photograph of sintered bar product in utility model.
Wherein, 1, detonator；2nd, booster gains；3rd, low explosive；4th, upper end plug；5th, strike pipe；6th, jacket；7th, nanometer
Aluminium powder；8th, outer tube；9th, pressure release piece；10th, pad；11st, groove；12nd, pedestal.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
The utility model is realized by following device：
It is a kind of can pressure release type nanometer aluminium bar explosive sintering device, the device include upper end plug 4, jacket 6, strike pipe 5,
Outer tube 8, pressure release piece 9 and pedestal 12；Upper end plug 4, jacket 6, strike pipe 5 and pedestal 12 are mutually fitted close, and form column
Closed container, gap be present between jacket 6 and strike pipe 5, base central has the groove 11 for gas in compressing powder, overcoat
Gap between pipe 8 and strike pipe 5 is used for containing explosive, and outer tube top center fixes booster gains 2 and detonator 1.Base
Seat 12 is provided with pressure relief, wherein, the top center of pedestal 12 is provided with the groove 11 for being used for gas in compressing powder, and pedestal
12 tops are sequentially provided with pressure release piece 9, pad 10；In addition, the top of upper end plug 4 is arranged to the cone for voltage stabilizing during propagation of explosion
Shape structure
Wherein, upper end plug 4 is made up of a circular cone and two cylinders, and respectively inclination angle × diameter dimension is：45°×
45mm, diameter × high size are：41 × 10mm and diameter × high size are：26 × 10mm cylinder；External diameter × thickness of jacket 6
Degree × high size is：30×2×160mm；Strike pipe 5 external diameter × thickness × high size be：45×2×180mm；Pressure release piece 9
Diameter × thickness be：26×0.2mm；External diameter × internal diameter × thickness of perforate pad 10 is：26×2×1mm；Base
Seat 12 is made up of two cylinders, and diameter × high size is：26 × 10mm and diameter × high size are 41 × 10mm；In pedestal 12
Diameter × high size of groove 11 be：10×13mm；External diameter × thickness of outer tube 8 × high size is：75×1.5×
220mm。
The top of upper end plug 4 is taper, is propagated to make detonation wave axially stablize, and jacket 6 is splendid attire nanometer aluminium powder 7
Container, strike pipe 5 is one layer of steel pipe outside jacket 6, for transmitting the Propagation of detonation wave, and hits pipe 5 and jacket 6
Buffering detonation wave is then played in gap, stabilizes it the effect of propagation, explosive, the base of bottom are deposited between outer tube 8 and strike pipe 5
Seat 12 is used for fixing jacket 6 and strike pipe 5, while completely cuts off air, and hollow recess 12 is opened at the center of pedestal 12, and upper end has perforate pad
Piece and tagger, detonator 1 and powder column 2 are fixed on device top.Extruding strike pipe 5 is driven using low explosive 4, impacts jacket
6, stable axial impact ripple extrusion friction nanometer aluminium powder 7 is formed, it is sintered the aluminium bar with nanostructured into, on pedestal 12
Pressure release piece 9 between powder particle in by compacting process gas impact when rupture, be delivered to by the centre bore of pad 10
In the groove 12 of pedestal, gases at high pressure are formed, can effectively prevent the generation of centre bore and shedding for powder.
Embodiment
The utility model uses the particle mean size of nanometer aluminium powder 7 as 100nm, and the low explosive 3 used is powdery ammonium ladder
Explosive, its particle diameter are 1.5 μm, carry out preparing nanometer aluminium bar in accordance with the following steps
(a) jacket 6 is assembled, hits pipe 5 and pedestal 12, is put into together with nanometer aluminium powder 7 and upper end plug 4 full of protection
In the closed glove box of atmosphere；
(b) 100g nanometer aluminium powders 7 are uniformly added into jacket 6, are compacted, aluminium powder loads compactness and reaches 40%-60%, and
Cover upper end plug 4；
(c) explosive sintering device is taken out out of glove box；
(d) explosive sintering device and outer tube 8 are assembled, and interior addition low explosive 3 is managed in outer tube 8, powder charge is close
Spend for 0.9g/cm3；
(e) starting detonator 1 and trigger the detonation low explosive 3 of powder column 2, strike pipe 5 hits jacket 6 under explosive force effect,
Nanometer aluminium powder 7 is compacted, obtains nanometer aluminium bar；
(f) cutting strike pipe 5 and jacket 6, obtain required nanometer aluminium bar.
The material object of nanometer aluminium bar made from the present embodiment as shown in figure 4, the Vickers hardness of nanometer aluminium bar is 120Kgf/mm2,
Its hardness has reached more than 4 times that traditional industry prepares aluminium bar hardness, as shown in Figure 5, it can be seen that obtained nanometer aluminium bar
Microstructure is uniform, as shown in fig. 6, the particle diameter of obtained nanometer aluminium bar, within 200nm, consistency is higher.
Claims (5)
1. it is a kind of can pressure release type nanometer aluminium bar explosive sintering device, the device include upper end plug (4), jacket (6), strike pipe
(5), outer tube (8), pressure release piece (9) and pedestal (12)；Upper end plug (4), jacket (6), strike pipe (5) and pedestal (12) are mutual
It is fitted close, forms column closed container, gap, outer tube (8) and strike pipe (5) between jacket (6) and strike pipe (5) is present
Between gap be used for containing explosive, outer tube top center fixes booster gains (2) and detonator (1), it is characterised in that
The pedestal (12) of the device is provided with pressure relief, wherein, the top center of pedestal (12), which is provided with, is used for gas in compressing powder
Groove (11), and pedestal (12) at the top of be sequentially provided with pressure release piece (9), pad (10)；In addition, the top of upper end plug (4) is set
It is set to the pyramidal structure for voltage stabilizing during propagation of explosion.
2. it is according to claim 1 can pressure release type nanometer aluminium bar explosive sintering device, it is characterised in that described upper end
Plug (4) is made up of a circular cone and two cylinders, and respectively diameter × high size is：45 × 22.5mm circular cone, diameter
× high size is：41 × 10mm and diameter × high size are：26 × 10mm cylinder.
3. it is according to claim 1 can pressure release type nanometer aluminium bar explosive sintering device, it is characterised in that jacket (6)
External diameter × thickness × high size is：30×2×160mm；Strike pipe (5) external diameter × thickness × high size be：45×2×
180mm；External diameter × thickness of outer tube (8) × high size is：75×1.5×220mm.
4. it is according to claim 1 can pressure release type nanometer aluminium bar explosive sintering device, it is characterised in that pressure release piece (9)
Diameter × thickness be：26×0.2mm；External diameter × internal diameter × thickness of perforate pad (10) is：26×2×1mm；
Pedestal (12) is made up of two cylinders, and diameter × high size is：26 × 10mm and diameter × high size are 41 × 10mm；Pedestal
(12) diameter × high size of the groove (11) in is：10×13mm.
5. it is according to claim 1 can pressure release type nanometer aluminium bar explosive sintering device, it is characterised in that described jacket
(6), strike pipe (5), upper end plug (4) and pedestal use 45# steel, and described outer tube (8) uses PVC engineering plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720691307.XU CN206912247U (en) | 2017-06-14 | 2017-06-14 | Can pressure release type explosive sintering nanometer aluminium bar device |
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|---|---|---|---|
| CN201720691307.XU CN206912247U (en) | 2017-06-14 | 2017-06-14 | Can pressure release type explosive sintering nanometer aluminium bar device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052331A (en) * | 2017-06-14 | 2017-08-18 | 南京理工大学 | Can pressure release type explosive sintering nanometer aluminium bar device and method |
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2017
- 2017-06-14 CN CN201720691307.XU patent/CN206912247U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052331A (en) * | 2017-06-14 | 2017-08-18 | 南京理工大学 | Can pressure release type explosive sintering nanometer aluminium bar device and method |
| CN107052331B (en) * | 2017-06-14 | 2020-04-10 | 南京理工大学 | Device and method for explosion sintering of nano aluminum bar capable of releasing pressure |
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