CN107236949A - A kind of near-net-shape preparation method of Al bases active metal cavity liner containing energy - Google Patents
A kind of near-net-shape preparation method of Al bases active metal cavity liner containing energy Download PDFInfo
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- CN107236949A CN107236949A CN201611221305.0A CN201611221305A CN107236949A CN 107236949 A CN107236949 A CN 107236949A CN 201611221305 A CN201611221305 A CN 201611221305A CN 107236949 A CN107236949 A CN 107236949A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
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Abstract
The present invention relates to a kind of near-net-shape preparation method of Al bases active metal cavity liner containing energy, belong to material and prepare and increases material manufacturing technology field.This method is：First Al bases reactive powder and the metal dust that can be reacted therewith are mixed, well mixed active metal mixed-powder is obtained；Then active metal mixed-powder is deposited on by profiling matrix surface using cold spraying, Al bases active metal coating containing energy is obtained in profiling matrix surface；Profiling matrix is removed finally by machining process, Al bases active metal cavity liner containing energy that accurate size, shape meet design requirement is obtained.The co-deposition of binary/multicomponent reactive metal system can be achieved, by changing the size of active metal powder, with when spraying parameter, content, distribution and the institutional framework of active component in active metal component that can be prepared by flexible modulation, realize the regulation and control of active metal property of medicine cover Energy Release, prepared cavity liner is continuously fine and close, and the porosity is less than 1%.
Description
Technical field
The present invention relates to a kind of near-net-shape preparation method of Al bases active metal cavity liner containing energy, and in particular to a class two
The low temperature near-net-shape preparation method of member or multicomponent reaction the component metal liner containing energy, belongs to material and prepares and increase material system
Make technical field.
Background technology
Cumulative cavity liner is the critical component to explosive charge energy production Mohaupt effect, is penetrated in destruction weapon and oil
It is widely applied on the bullet of hole.According to Types of Medicine cover structure and the difference of powder charge, can produce three types injures member：Cumulative
Jet, EFP and jetting penetrator.Typical conical liner is quick-fried in the high speed, high pressure produced by explosive charge
During the effect of Hong ripple, the high pressure being subject on cavity liner makes shaped charge material with about 104/ s~107/ s high strain rate deformation is simultaneously
Generation conquassation effect, along cavity liner axis formation head speed 6km/s~12km/s high-speed jet, when jet is with interacting goals
Perforated by Penetration formation.
Traditional cumulative shaped charge material selection criterion mainly follows high density, high-melting-point, high intensity and good ductility,
With the quality of the continuity, velocity of jet head and the jet that improve jet, so as to realize the maximum Penetration Depth to target, fine copper
With good plasticity, higher density and good processing characteristics, as the most commonly used shaped charge material, obtain in practice
To extensive use.But when carrying out the penetration open hole application of the hard targets such as concrete, ground, except requiring to obtain necessarily
Outside Penetration Depth, also require that penetration bore dia further increases, while not forming pestle body after holes regular shape, holes, and pass
The copper conic liner of system has that opening diameter is smaller, easily form the deficiencies such as pestle is stifled, aperture shape is irregular in Penetration.In recent years
Come, containing can active metal cavity liner because its have it is special release can characteristic, and do not form pestle and block up, Penetration Depth can be taken into account and invaded
Thorough aperture, is militarily with a wide range of applications with terms of oil perforate bullet, obtains great concern.
The active metal cavity liner containing energy is by active metal (such as Al, Mg, Ti) and can sent out therewith under given conditions
Other metals of liveliness proof chemical reaction, the nonmetallic new cavity liner for being shaped to certain density, intensity and releasing energy characteristic.
In the Jet Penetration target of explosive charge formation, between the reactive component in the active metal cavity liner containing energy or material and the external world
Oxidizing atmosphere between occur strong chemical reaction, while discharging substantial amounts of energy (heat, light, blast wave etc.) and being formed final
Product, improves jet temperature, can realize big penetration aperture and higher Penetration Depth, significantly improve the appearance of penetration passage
Product.
The active metal cavity liner containing energy is each in the chemical reaction rate and energy releasing efficiency and material under shock loading
The ratio of active component, distributional pattern are closely related, usually require that the reactive species in material can be realized and are sufficiently mixed, and
Each component is evenly distributed, while material should also possess higher intensity, to obtain rational structural mechanical property.Containing at present to live
Property metal liner preparation for processing based on powder compacting, including powder compacting, powder metallurgy and powder injection molding
Deng (CN 103328764B, CN 102182432A).But when powder compacting and powder injection molding, each component powder is in shaping
During generation localized clusters are easily slid due to stress, causing the distribution of each active component in cavity liner, macroscopic view occur uneven
Property, while the complex shaped components being molded have the higher porosity, have a strong impact on the structural mechanics of active metal material
Energy.In order to obtain high mechanical property and higher consistency in powder metallurgy process, generally require and pass through in forming process
Improve sintering temperature to realize, because the component of the cavity liner containing energy is more sensitive to temperature and oxygen, its reaction temperature is relatively low, burns
Junction temperature exceedes reaction temperature, reaction of each activity in the process segment easily occurs, it is difficult to obtaining high intensity and consistency
In the case of have both chemical constituent containing can characteristic integrality.In addition, above conventional powder moulding process is preparing large scale, thin
There is shaping problem in terms of wall shaped element, especially for this kind of complex-curved thin-wall member of cavity liner, it, which is molded, prepares
Problem seriously governs development and the practical application of the active metal cavity liner containing energy.
The content of the invention
For deficiency of the conventional powder forming method in terms of the active metal cavity liner technology of preparing containing energy, mesh of the invention
Be provide a kind of Al bases containing can active metal cavity liner near-net-shape preparation method, methods described utilize each reactive component
Dusty material, by regulating and controlling powder size and proportioning, with reference to the control of preparation technology parameter, realized and contained using cold spray technique
The low temperature near-net-shape of energy active metal cavity liner；Methods described can effectively improve binary or multicomponent reaction component activity containing energy
The solid density and structural mechanical property of metal liner, obtain the compact texture close to materials theory density, ensure simultaneously
Each reactive component is uniformly dispersed, and the problem of each reactive component reacts to each other in preparation process is prevented effectively from, in Shaped charge warhead
There is good application potential with active metal cavity liner aspect with petroleum perforation charge.
The purpose of the present invention is realized using following technical scheme.
A kind of Al bases containing can active metal cavity liner near-net-shape preparation method, methods described step is：
Al bases reactive powder and the metal dust that can be reacted therewith are mixed first, well mixed work is obtained
Property metal mixed powder；Then active metal mixed-powder is deposited on by profiling matrix surface using cold spraying, in profiling matrix
Surface obtains Al bases active metal coating containing energy；Profiling matrix is removed finally by machining process, accurate size, shape is obtained
Shape meets Al bases active metal cavity liner containing energy of design requirement.
Wherein, the Al bases reactive powder is Al or Al alloy powders, and the metal dust is Ni, Ni alloy, Fe, Fe conjunction
One or more of gold, W and W alloy, are counted, wherein Al or Al alloys using the active metal mixed-powder gross mass as 100%
Mass fraction be 7%~60%, preferably the mass fraction of Al or Al alloys be 40%；
Al the or Al alloy powders particle diameter is 5 μm~50 μm, and powder shape is spherical or subsphaeroidal；It is preferred that Al or Al is closed
Golden powder size is 10 μm~45 μm, is shaped as spherical.Ni, Ni alloy, Fe, Fe alloy, W and W alloy powder size are 5
μm~45 μm, powder shape is subsphaeroidal or irregular shape；It is preferred that Ni powder is subsphaeroidal, granularity is 10 μm~38 μm；It is preferred that
Fe powder is subsphaeroidal, and granularity is 10 μm~38 μm；It is preferred that W powder be shaped as it is subsphaeroidal, granularity be 5 μm~12 μm.
It is preferred that described be mixed into mechanical mixture.
The profiling matrix is identical with the shape of designed cavity liner, and its exterior surface dimension is than designed Types of Medicine cover inner surface
Size is small 300 μm~and 500 μm, it is preferably small 300 μm；The material of the profiling matrix can use Al, steel or Cu, preferably Al；
The cleaning of the profiling outer surface of matrix can be cleaned by ultrasonic using the pure acetone reagent of chemistry, to remove profiling
The greasy dirt and pollutant of part outer surface, cleaning temperature are 30 DEG C, and scavenging period is not less than 10min, in 105 DEG C of bakings after ultrasonic cleaning
Dry 30min；
The cavity liner is shaped as cone, segment-shaped or biconial；
The cold spraying is by carrying out the gas of certain temperature and pressure using Laval-cavity nozzle to accelerate to be formed at a high speed
Gas jet, will be fed into jet active metal powder heating, accelerate after make active metal powder high-speed impact matrix surface, profit
The method for occurring intense plastic strain with solid active metal dust and matrix and forming deposition；The work of the cold spraying and send
Powder gas is each independently nitrogen or helium, and gas pressure is 0.48MPa~1.2MPa, and gas temperature is 100 DEG C~300 DEG C,
Powder feeding rate is 7g/min~25g/min, and jet expansion is apart from profiling matrix surface 10mm~40mm, nozzle-axis and profiling base
Body surface face angle is 70 °~90 °, by adjusting the translational speed of spray gun and the rotary speed of profiling matrix, makes nozzle and profiling
The relative moving speed of outer surface of matrix tangential direction is 30mm/s~150mm/s, and single pass deposit thickness is 0.4mm~2mm.
It is preferred that the working gas of cold spraying is helium, air pressure preferably is 0.62MPa, and working gas temperature is
150 DEG C, powder feeding rate is 11g/min, and jet expansion is apart from profiling matrix surface 15mm；Nozzle-axis is pressed from both sides with profiling matrix surface
Angle is 90 °.
Preferred nozzle is 80mm/s with the tangential relative moving speed of profiling outer surface of matrix, and single pass deposit thickness is
0.8mm。
It is preferred that machining process be turnery processing；It is preferred that cavity liner turnery processing order be：First process outer surface
To cavity liner design size, profiling matrix is then removed, and by the dimensioned of Types of Medicine cover inner surface to final size；It is preferred that car
The feed velocity of knife is 0.1mm/s~1mm/s, and single track depth of cut is 0.1mm~0.3mm.
Beneficial effect
1. the near-net-shape preparation method for the active metal cavity liner containing energy that the present invention is provided, can be achieved binary/polynary work
The co-deposition of property metal system., can flexible modulation institute by changing the size of active metal powder, with when spraying parameter
Content, distribution and the institutional framework of active component in the active metal component of preparation, realize that active metal cavity liner energy discharges
The regulation and control of characteristic, prepared cavity liner is continuously fine and close, and the porosity is less than 1%；
2. the present invention provide containing can active metal cavity liner near-net-shape preparation method, be applicable to it is a variety of containing Al,
The temperature of the energetic material system of Mg isoreactivity metals, preparation process floating coat and profiling matrix is less than 150 DEG C, far below each work
Reacting initial temperature between property component, can be prevented effectively from reaction and oxidation between each activearm powder；
3. in the near-net-shape preparation process for the active metal cavity liner containing energy that the present invention is provided, active metal powder material
Intense plastic strain can occur after particle high-speed impact matrix, material produces obvious strain hardening effect, and prepared contains energy
Active material intensity is substantially better than conventional powder method, and cavity liner has good structural mechanical property；
4. the near-net-shape preparation method for the active metal cavity liner containing energy that the present invention is provided, passes through rational allowance
Design, can be achieved the near-net-shape of the large size, thin walled active cavity liner containing energy, and production efficiency is high, and technology controlling and process is simple, fits
Together in batch production；
5. the near-net-shape preparation method for the active metal cavity liner containing energy that the present invention is provided, prepared cavity liner is directed to
When metal, ground, Concrete Object perforate, in addition to the utilization of explosive charge energy, moreover it is possible to work is utilized in Penetration
Property the chemical energy formation pressurized effect that produces of component reaction release, institute perforate road shape rule, no pestle is blocked up, compared to traditional Types of Medicine
Cover has higher opening diameter.
Brief description of the drawings
Fig. 1 is the operating diagram that spray gun carries out cold spraying on profiling matrix.
Fig. 2 is the Al bases active metal coating schematic diagram containing energy for being sprayed on profiling matrix surface.
The Al bases active metal cavity liner photo containing energy and the scanning electron of microstructure that Fig. 3 is obtained by embodiment 1 show
Micro mirror photo.
The Al bases active metal cavity liner photo containing energy and the scanning electron of microstructure that Fig. 4 is obtained by embodiment 2 show
Micro mirror photo.
The SEM of the microstructure for Al bases active metal cavity liner containing energy that Fig. 5 is obtained by embodiment 3
Photo.
The SEM of the microstructure for Al bases active metal cavity liner containing energy that Fig. 6 is obtained by embodiment 4
Photo.
The Al bases active metal cavity liner photo containing energy and the scanning electron of microstructure that Fig. 7 is obtained by embodiment 5 show
Micro mirror photo.
Embodiment
With reference to specific embodiment and accompanying drawing the present invention is described in further detail, it is necessary to explanation, this
A little embodiments are the present invention preferably examples, for it will be understood by those skilled in the art that the present invention, but the invention is not limited in
These embodiments.
In following examples, reactive component powder used is placed in vacuum drying chamber under the conditions of 105 DEG C after mixing
Dry stand-by after 2h.In order to remove the greasy dirt and pollutant of profiling matrix surface, profiling matrix is in 30 DEG C of analysis pure acetone
It is cleaned by ultrasonic in reagent after 10min, is used after being dried through 105 DEG C.
Embodiment 1
A kind of near-net-shape preparation method of Al bases active metal cavity liner containing energy, methods described step is as follows：
1) Al bases reactive powder and the metal dust that can be reacted therewith are mixed, obtains well mixed activity
Metal mixed powder；
The Al bases reactive powder is the spherical Al powder that granularity is 10 μm~45 μm, and the metal dust is that granularity is 10 μm
~38 μm of subsphaeroidal Ni powder, Al powder and Ni powder mechanical mixture is uniform, using the gross mass of the active metal mixed-powder as
100% meter, the mass fraction of Al powder is 7%.
2) active metal mixed-powder is deposited on by profiling matrix surface using cold spraying, Al is obtained in profiling matrix surface
Base active metal coating containing energy, wherein, profiling matrix, size surplus and Al the bases active metal containing energy are followed successively by from inside to outside to be applied
Layer；
The cavity liner is shaped as segment-shaped, and the profiling matrix is identical with the shape of designed cavity liner, its outer surface
Size is smaller than designed Types of Medicine cover inner surface size 300 μm；The material of the profiling matrix is Al；
The work of cold spraying and powder feeding gas use technical pure N2, deposition parameter is：Gas pressure 1.2MPa, gas temperature
For 300 DEG C, powder feeding rate is 15g/min, and jet expansion is outside profiling outer surface of matrix 10mm, nozzle-axis and profiling matrix
Surface angle is 90 °, by adjusting the translational speed of spray gun and the rotary speed of profiling matrix, makes spray gun along imitative base body appearance
The relative moving speed of face tangential direction is 30mm/s；Single pass deposit thickness is 1.8mm, is co-deposited 2 times, is used in deposition process
Infrared radiation thermometer monitors profiling matrix surface temperature<150℃.
3) after the completion of depositing, first by the Al bases of deposition active metal coating appearance facing containing energy to cavity liner profile chi
It is very little, profiling matrix is then removed using turnery processing, and inner surface is machined to cavity liner inner wall size；The feed velocity of lathe tool
For 1mm/s, single track depth of cut is 0.1mm, obtains Al bases active metal medicine containing energy that accurate size, shape meet design requirement
Type cover.
Al bases manufactured in the present embodiment active metal cavity liner containing energy and microstructure are as shown in Figure 3.Utilize scanning electron
Microstructure picture, the porosity of the shaped charge material is counted using image analysis method<The volume integral of 0.2%, Ni component
Number is 15%；Using the phase composition in cavity liner described in XRD analysis, the interparticle reaction generation phases of Ni and Al are not found, are shown
During the low temperature depositing of cavity liner is carried out using cold spraying, do not react between each active component, active material contains
Energy characteristic is completely retained；The Static Compression Performance of the shaped charge material is according to GB/T 7314-2005 metal material room temperatures
Compression test method is tested；Dynamic compressive property is tested using split hopkinson press bar test system, test
Use size be the shaped charge materials of Φ 5 × 5 as sample, test strain rate 3000s-1.Test result shows the cavity liner
The static compress yield strength of material is 220MPa, and dynamic compression yield strength is 260MPa, shows good structural mechanics
Performance；The quiet quick-fried penetration property test of 50mm aluminium targets is carried out under the conditions of the height of burst is 3 times of cover footpaths to the cavity liner, is as a result shown
The holes diameter of the cavity liner is than same structure, with the copper conic liner raising 90% of size, and penetration hole shape is regular, and no pestle is blocked up
Phenomenon.
Embodiment 2
A kind of near-net-shape preparation method of Al bases active metal cavity liner containing energy, methods described step is as follows：
1) Al bases reactive powder and the metal dust that can be reacted therewith are mixed, obtains well mixed activity
Metal mixed powder；
The Al bases reactive powder is the spherical Al powder that granularity is 10 μm~45 μm, and the metal dust is that granularity is 5 μm
~12 μm of subsphaeroidal Ni powder, Al powder and Ni powder mechanical mixture is uniform, using the gross mass of the active metal mixed-powder as
100% meter, the mass fraction of Al powder is 40%.
2) active metal mixed-powder is deposited on by profiling matrix surface using cold spraying, Al is obtained in profiling matrix surface
Base active metal coating containing energy, as shown in Fig. 2 wherein, profiling matrix, size surplus and Al bases being followed successively by from inside to outside and contains and can live
Property metal coating；
The cavity liner is shaped as cone, and the profiling matrix is identical with the shape of designed cavity liner, its outer surface
Size is smaller than designed Types of Medicine cover inner surface size 500 μm；The material of the profiling matrix is Cu；
The work of cold spraying and powder feeding gas use technical pure He, and deposition parameter is：Gas pressure 0.48MPa, gas temperature
Spend for 150 DEG C, powder feeding rate is 10g/min；Jet expansion is apart from profiling outer surface of matrix 20mm, nozzle-axis and profiling matrix
Outer surface angle is 90 °, by adjusting the translational speed of spray gun and the rotary speed of profiling matrix, is made outside the imitative base body in spray gun edge
The relative moving speed in surface tangent direction is 80mm/s, as shown in Figure 1；Single pass deposit thickness is 0.4mm, is co-deposited 8 times, is sunk
Profiling matrix surface temperature is monitored using infrared radiation thermometer during product<100℃.
3) after the completion of depositing, first by the Al bases of deposition active metal coating appearance facing containing energy to cavity liner profile chi
It is very little, profiling matrix is then removed using turnery processing, and inner surface is machined to cavity liner inner wall size；The feed velocity of lathe tool
For 0.5mm/s, single track depth of cut is 0.1mm, obtains Al bases active metal containing energy that accurate size, shape meet design requirement
Cavity liner.
Al bases manufactured in the present embodiment active metal cavity liner containing energy and microstructure are as shown in Figure 4.Utilize scanning electron
Microstructure picture, the material porosity of the cavity liner is counted using image analysis method<The volume integral of 0.2%, Ni component
Number is 36%；Using the phase composition in cavity liner described in XRD analysis, the interparticle reaction generation phases of Ni and Al are not found, are shown
During the low temperature depositing of the cavity liner is carried out using cold spraying, do not reacted between each active component, active material
Containing can characteristic completely retained；To the Static Compression Performance foundation GB/T 7314-2005 metal materials of the shaped charge material
Material room temperature compression test method is tested；Dynamic compressive property is surveyed using split hopkinson press bar test system
Examination, tests the shaped charge material for using size to be Φ 5 × 5 as sample, test strain rate 3000s-1.Test result shows institute
The static compress yield strength for stating shaped charge material is 300MPa, and dynamic compression yield strength is 320MPa, is shown good
Structural mechanical property；The quiet quick-fried penetration property test of 50mm aluminium targets is carried out under the conditions of the height of burst is 3 times of cover footpaths to the cavity liner,
As a result show the same structure of holes diameter ratio using the cavity liner, 90%, and penetration hole shape are improved with size copper conic liner
Rule, no pestle blocks up phenomenon.
Embodiment 3
A kind of near-net-shape preparation method of Al bases active metal cavity liner containing energy, methods described step is as follows：
1) Al bases reactive powder and the metal dust that can be reacted therewith are mixed, obtains well mixed activity
Metal mixed powder；
The Al bases reactive powder is the subsphaeroidal 2024Al alloyed powders that granularity is 10 μm~40 μm, and the metal dust is
Granularity is 5 μm~10 μm of subsphaeroidal Fe powder, and 2024Al alloyed powders and Fe powder mechanical mixture is uniform, mixed with the active metal
It is 100% meter to close the gross mass of powder, and the mass fraction of 2024Al alloyed powders is 20%.
, 2) and active metal mixed-powder is deposited on by profiling matrix surface using cold spraying, obtained in profiling matrix surface
Al bases active metal coating containing energy, as shown in Fig. 2 wherein, profiling matrix, size surplus and Al bases are followed successively by from inside to outside containing energy
Active metal coating；
The cavity liner is shaped as cone, and the profiling matrix is identical with the shape of designed cavity liner, its outer surface
Size is smaller than designed Types of Medicine cover inner surface size 300 μm；The material of the profiling matrix is Al；
The work of cold spraying and powder feeding gas use technical pure He, and deposition parameter is：Gas pressure 0.62MPa, gas temperature
Spend for 300 DEG C, powder feeding rate is 11.7g/min；Jet expansion is apart from profiling outer surface of matrix 30mm, nozzle-axis and profiling base
External surface angle is 70 °, and it is 150mm/s, such as Fig. 1 to make relative moving speed of the spray gun along imitative base body outer surface tangential direction
It is shown；Single pass deposit thickness is 0.5mm, is co-deposited 7 times, and profiling matrix surface temperature is monitored using infrared radiation thermometer in deposition process
Degree<120℃.
3) after the completion of depositing, first by the Al bases of deposition active metal coating appearance facing containing energy to cavity liner profile chi
It is very little, profiling matrix is then removed using turnery processing, and inner surface is machined to cavity liner inner wall size；The feed velocity of lathe tool
For 1mm/s, single track depth of cut is 0.1mm, obtains Al bases active metal medicine containing energy that accurate size, shape meet design requirement
Type cover.
The microstructure of Al bases manufactured in the present embodiment active metal cavity liner containing energy is as shown in Figure 5.Utilize scanning electron
Microstructure picture, the porosity of the shaped charge material is counted using image analysis method<The volume integral of 0.35%, Fe component
Number is 42%；Using the phase composition in cavity liner described in XRD analysis, the reaction generation between Fe and 2024Al alloy particles is not found
Phase, is shown during the low temperature depositing of the cavity liner is carried out using cold spraying, is not reacted between each active component, living
Property material containing can characteristic completely retained；To the Static Compression Performance foundation GB/T 7314-2005 of the shaped charge material
Metal material room temperature compression test method is tested；Dynamic compressive property is entered using split hopkinson press bar test system
Row test, tests the shaped charge material for using size to be Φ 5 × 5 as sample, test strain rate 3000s-1.Test knot
Fruit shows that the static compress yield strength of the shaped charge material is 310MPa, and dynamic compression yield strength is 330MPa, performance
Go out good structural mechanical property；The quiet quick-fried penetration of 50mm aluminium targets is carried out under the conditions of the height of burst is 3 times of cover footpaths to the cavity liner
Performance test, as a result shows the same structure of holes diameter ratio using the cavity liner, improves 70% with size copper conic liner, and invade
Thorough hole shape rule, no pestle blocks up phenomenon.
Embodiment 4
A kind of near-net-shape preparation method of Al bases active metal cavity liner containing energy, methods described step is as follows：
1) Al bases reactive powder and the metal dust that can be reacted therewith are mixed, obtains well mixed activity
Metal mixed powder；
The Al bases reactive powder is the subsphaeroidal 2024Al alloyed powders that granularity is 10 μm~45 μm, and the metal dust is
Granularity is 10 μm~38 μm of subsphaeroidal Fe powder, and 2024Al alloyed powders and Fe powder mechanical mixture is uniform, with the active metal
The gross mass of mixed-powder is 100% meter, and the mass fraction of 2024Al alloyed powders is 10%.
2) active metal mixed-powder is deposited on by profiling matrix surface using cold spraying, Al is obtained in profiling matrix surface
Base active metal coating containing energy, as shown in Fig. 2 wherein, profiling matrix, size surplus and Al bases being followed successively by from inside to outside and contains and can live
Property metal coating；
The cavity liner is shaped as cone, and the profiling matrix is identical with the shape of designed cavity liner, its outer surface
Size is smaller than designed Types of Medicine cover inner surface size 500 μm；The material of the profiling matrix is Al；
The work of cold spraying and powder feeding gas use technical pure He, and deposition parameter is：Gas pressure 1MPa, gas temperature is
200 DEG C, powder feeding rate is 15g/min, and jet expansion is apart from profiling outer surface of matrix 40mm, nozzle-axis and profiling matrix appearance
Face angle is 90 °, by adjusting the translational speed of spray gun and the rotary speed of profiling matrix, makes spray gun along imitative base body outer surface
The relative moving speed of tangential direction is 80mm/s, as shown in Figure 1；Single pass deposit thickness is 0.6mm, is co-deposited 5 times, deposited
Profiling matrix surface temperature is monitored using infrared radiation thermometer in journey<80℃.
3) after the completion of depositing, first by the Al bases of deposition active metal coating appearance facing containing energy to cavity liner profile chi
It is very little, profiling matrix is then removed using turnery processing, and inner surface is machined to cavity liner inner wall size；The feed velocity of lathe tool
For 0.2mm/s, single track depth of cut is 0.1mm, obtains Al bases active metal containing energy that accurate size, shape meet design requirement
Cavity liner.
The microstructure of Al bases manufactured in the present embodiment active metal cavity liner containing energy is as shown in Figure 6.Utilize scanning electron
Microstructure picture, the porosity of the shaped charge material is counted using image analysis method<The volume integral of 0.1%, Fe component
Number is 18%；Using the phase composition in cavity liner described in XRD analysis, the reaction generation between Fe and 2024Al alloy particles is not found
Phase, is shown during the low temperature depositing of the cavity liner is carried out using cold spraying, is not reacted between each active component, living
Property material containing can characteristic completely retained；To the Static Compression Performance foundation GB/T 7314-2005 of the shaped charge material
Metal material room temperature compression test method is tested；Dynamic compressive property is entered using split hopkinson press bar test system
Row test, tests the shaped charge material for using size to be Φ 5 × 5 as sample, test strain rate 3000s-1.Test knot
Fruit shows that the static compress yield strength of the shaped charge material is 260MPa, and dynamic compression yield strength is 280MPa, performance
Go out good structural mechanical property；The quiet quick-fried penetration of 50mm aluminium targets is carried out under the conditions of the height of burst is 3 times of cover footpaths to the cavity liner
Performance test, as a result shows the same structure of holes diameter ratio using the cavity liner, improves 40% with size copper conic liner, and invade
Thorough hole shape rule, no pestle blocks up phenomenon.
Embodiment 5
A kind of near-net-shape preparation method of Al bases active metal cavity liner containing energy, methods described step is as follows：
1) Al bases reactive powder and the metal dust that can be reacted therewith are mixed, obtains well mixed activity
Metal mixed powder；
The Al bases reactive powder is the subsphaeroidal 2024Al alloyed powders that granularity is 10 μm~45 μm, and the metal dust is
The subsphaeroidal W powder that granularity is 10 μm~38 μm of subsphaeroidal Ni powder and granularity is 5 μm~12 μm, by 2024Al alloyed powders, Ni powder
It is uniform with W powder mechanical mixture, counted using the gross mass of the active metal mixed-powder as 100%, 2024Al alloyed powders quality point
Number is that 20%, Ni powder mass fraction is that 17%, W powder mass fraction is 63%.
2) active metal mixed-powder is deposited on by profiling matrix surface using cold spraying, Al is obtained in profiling matrix surface
Base active metal coating containing energy, wherein, profiling matrix, size surplus and Al the bases active metal containing energy are followed successively by from inside to outside to be applied
Layer；
The Types of Medicine hood shape is as shown in fig. 7, the profiling matrix is identical with the shape of designed cavity liner, its outer surface
Size is smaller than designed Types of Medicine cover inner surface size 400 μm；The material of the profiling matrix is Al；
The work of cold spraying and powder feeding gas use technical pure He, and deposition parameter is：Gas pressure 0.62MPa, gas temperature
Spend for 300 DEG C, powder feeding rate is 25g/min, and jet expansion is apart from profiling outer surface of matrix 15mm, nozzle-axis and profiling matrix
Outer surface angle is 90 °, by adjusting the translational speed of spray gun and the rotary speed of profiling matrix, is made outside the imitative base body in spray gun edge
The relative moving speed in surface tangent direction is 80mm/s；Single pass deposit thickness is 0.6mm, is co-deposited 9 times, is adopted in deposition process
Profiling matrix surface temperature is monitored with infrared radiation thermometer<150℃.
3) after the completion of depositing, first by the Al bases of deposition active metal coating appearance facing containing energy to cavity liner profile chi
It is very little, profiling matrix is then removed using turnery processing, and inner surface is machined to cavity liner inner wall size；The feed velocity of lathe tool
For 0.5mm/s, single track depth of cut is 0.3mm, obtains Al bases active metal containing energy that accurate size, shape meet design requirement
Cavity liner.
Al bases manufactured in the present embodiment active metal cavity liner containing energy and microstructure are as shown in Figure 7.Utilize scanning electron
Microstructure picture, wherein Ni, W component particle even dispersion are distributed in 2024Al alloy-based body phases；Using graphical analysis side
Method counts the porosity of the shaped charge material<The volume fraction of 0.1%, Ni component is that the volume fraction of 18%, W components is
15%；Using the phase composition in cavity liner described in XRD analysis, do not find anti-between Ni/W, Ni/2024Al and W/2024Al component
Phase should be generated, shows during the low temperature depositing of the cavity liner is carried out using cold spraying, is not reacted between each component,
Active material containing can characteristic completely retained, and W group powder is uniformly distributed the density for adding active material；To the medicine
The Static Compression Performance of type cover material is tested according to GB/T 7314-2005 metal material room temperature compression test methods；Dynamic
Compression performance is tested using split hopkinson press bar test system, and test uses size Φ 5 × 5 cavity liner
Material is used as sample, test strain rate 3000s-1.Test result shows the static compress yield strength of the shaped charge material
For 300MPa, dynamic compression yield strength is 318MPa, shows good structural mechanical property；To the cavity liner in the height of burst
To carry out the quiet quick-fried penetration property test of 50mm aluminium targets under the conditions of 3 times of cover footpaths, as a result show straight using the holes of the cavity liner
The same structure of footpath ratio, 1.2 times, and penetration hole shape rule are improved with size copper conic liner, no pestle blocks up phenomenon；It it is 2.5 times in the height of burst
The quiet quick-fried penetration property test of 600mm concrete targets is carried out under the conditions of cover footpath, the holes diameter ratio of the cavity liner is as a result shown
Same structure, with size copper conic liner improve 2 times, maximum penetration aperture reached 0.8 times cover footpath, Penetration Depth more than 8.3 times cover
Footpath, while realizing the radioactivity cracking of concrete thick sheet radial direction, penetration hole shape rule, no pestle blocks up phenomenon.
Claims (10)
1. a kind of near-net-shape preparation method of Al bases active metal cavity liner containing energy, it is characterised in that：Methods described step is：
Al bases reactive powder and the metal dust that can be reacted therewith are mixed first, well mixed activity gold is obtained
Belong to mixed-powder；Then active metal mixed-powder is deposited on by profiling matrix surface using cold spraying, in profiling matrix surface
Obtain Al bases active metal coating containing energy；Profiling matrix is removed finally by machining process, accurate size, shape symbol is obtained
Close Al bases active metal cavity liner containing energy of design requirement；
The Al bases reactive powder is Al or Al alloy powders, and the metal dust is that Ni, Ni alloy, Fe, Fe alloy, W and W are closed
One or more of gold, is counted using the active metal mixed-powder gross mass as 100%, and the mass fraction of Al or Al alloys is
7%~60%；
Al the or Al alloy powders particle diameter is 5 μm~50 μm, and powder shape is spherical or subsphaeroidal；Ni, Ni alloy,
Fe, Fe alloy, W and W alloy powder size are 5 μm~45 μm, and powder shape is subsphaeroidal or irregular shape；
The profiling matrix is identical with the shape of designed cavity liner, and its exterior surface dimension is than designed Types of Medicine cover inner surface size
It is small 300 μm~500 μm；
The cavity liner is shaped as cone, segment-shaped or biconial；
The work of the cold spraying and powder feeding gas are each independently nitrogen or helium, and gas pressure is 0.48MPa~1.2MPa,
Gas temperature is 100 DEG C~300 DEG C, and powder feeding rate is 7g/min~25g/min, and jet expansion is apart from profiling matrix surface 10mm
~40mm, nozzle-axis and profiling matrix surface angle are 70 °~90 °, nozzle and the phase of profiling outer surface of matrix tangential direction
It is 30mm/s~150mm/s to translational speed, single pass deposit thickness is 0.4mm~2mm.
2. a kind of near-net-shape preparation method of Al bases according to claim 1 active metal cavity liner containing energy, its feature
It is：The mass fraction of Al or Al alloys is 40%.
3. a kind of near-net-shape preparation method of Al bases according to claim 1 active metal cavity liner containing energy, its feature
It is：Al or Al alloy powders granularity is 10 μm~45 μm, is shaped as spherical；Ni powder is subsphaeroidal, and granularity is 10 μm~38 μm；
Fe powder is subsphaeroidal, and granularity is 10 μm~38 μm；W powder be shaped as it is subsphaeroidal, granularity be 5 μm~12 μm.
4. a kind of near-net-shape preparation method of Al bases according to claim 1 active metal cavity liner containing energy, its feature
It is：It is described to be mixed into mechanical mixture.
5. a kind of near-net-shape preparation method of Al bases according to claim 1 active metal cavity liner containing energy, its feature
It is：Exterior surface dimension is smaller than designed Types of Medicine cover inner surface size 300 μm.
6. a kind of near-net-shape preparation method of Al bases according to claim 1 active metal cavity liner containing energy, its feature
It is：The material of the profiling matrix is Al, steel or Cu.
7. a kind of near-net-shape preparation method of Al bases according to claim 1 active metal cavity liner containing energy, its feature
It is：The material of the profiling matrix is Al.
8. a kind of near-net-shape preparation method of Al bases according to claim 1 active metal cavity liner containing energy, its feature
It is：The cleaning of the profiling outer surface of matrix is cleaned by ultrasonic using the pure acetone reagent of chemistry, to remove outside imitation shape piece
The greasy dirt and pollutant on surface, cleaning temperature are 30 DEG C, and scavenging period is not less than 10min, in 105 DEG C of drying after ultrasonic cleaning
30min。
9. a kind of near-net-shape preparation method of Al bases according to claim 1 active metal cavity liner containing energy, its feature
It is：The working gas of cold spraying is helium, and air pressure is 0.62MPa, and working gas temperature is 150 DEG C, powder feeding speed
Rate is 11g/min, and jet expansion is apart from profiling matrix surface 15mm；Nozzle-axis and profiling matrix surface angle are 90 °, nozzle
It is 80mm/s with the tangential relative moving speed of profiling outer surface of matrix, single pass deposit thickness is 0.8mm.
10. a kind of near-net-shape preparation method of Al bases according to claim 1 active metal cavity liner containing energy, its feature
It is：Machining process is turnery processing；The cavity liner turnery processing order is：First processing outer surface to cavity liner is designed
Size, then removes profiling matrix, and by the dimensioned of Types of Medicine cover inner surface to final size；The feed velocity of lathe tool is
0.1mm/s~1mm/s, single track depth of cut is 0.1mm~0.3mm.
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| CN113210607A (en) * | 2021-03-16 | 2021-08-06 | 南京工业职业技术大学 | Auxiliary material, composite shaped charge liner containing auxiliary material and preparation method of composite shaped charge liner |
| JPWO2020032074A1 (en) * | 2018-08-10 | 2021-08-26 | 日本発條株式会社 | Method of manufacturing a laminate |
| CN113376035A (en) * | 2021-06-19 | 2021-09-10 | 中国人民解放军国防科技大学 | Device and method for testing energy release of active material under different atmospheres |
| CN115213415A (en) * | 2022-07-22 | 2022-10-21 | 中国兵器工业第五九研究所 | Preparation method of high-performance composite material shaped charge liner |
| CN115338422A (en) * | 2022-06-29 | 2022-11-15 | 西北工业大学 | Additive manufacturing method of multilayer shaped charge liner coating for improving after-damage pressure |
| WO2022251909A1 (en) * | 2021-05-31 | 2022-12-08 | Composite Technology R & D Pty Limited | A process for additively manufacturing metal casings |
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| CN113376035A (en) * | 2021-06-19 | 2021-09-10 | 中国人民解放军国防科技大学 | Device and method for testing energy release of active material under different atmospheres |
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| CN115213415A (en) * | 2022-07-22 | 2022-10-21 | 中国兵器工业第五九研究所 | Preparation method of high-performance composite material shaped charge liner |
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Application publication date: 20171010 |