CN106977356A - A kind of cylinder test explosive press-fits mould - Google Patents
A kind of cylinder test explosive press-fits mould Download PDFInfo
- Publication number
- CN106977356A CN106977356A CN201710304267.3A CN201710304267A CN106977356A CN 106977356 A CN106977356 A CN 106977356A CN 201710304267 A CN201710304267 A CN 201710304267A CN 106977356 A CN106977356 A CN 106977356A
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- Prior art keywords
- base
- sleeve
- circular hole
- external diameter
- drift
- 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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- 239000002360 explosive Substances 0.000 title claims abstract description 60
- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000009423 ventilation Methods 0.000 claims abstract description 27
- 238000005422 blasting Methods 0.000 claims abstract description 25
- 239000008187 granular material Substances 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 abstract description 17
- 239000000843 powder Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000007493 shaping process Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0033—Shaping the mixture
- C06B21/0041—Shaping the mixture by compression
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Powder Metallurgy (AREA)
Abstract
Press-fit mould the invention discloses a kind of cylinder test explosive, including sleeve, drift, blasting explosive granules, base, plug and sealing ring, sleeve is that internal one end is straight hole, and the other end is bell-mouthed cylinder, and drift, blasting explosive granules and base are sequentially installed with sleeve inner；Base is step-like cylinder, and ventilation circular hole is machined with along the diametric(al) of base external diameter small end, and horizontal air inlet circular hole is machined with along the radial direction at the larger end of base external diameter, and the axial admission circular hole by base axis direction is connected with circular hole of ventilating；Plug is installed in the one end of base axial admission circular hole away from ventilation circular hole.The advantage of the invention is that after blasting explosive granules are compressing, without applying larger secondary load to drift, just shaped charge can slowly be exited, avoid and move back shaped charge density deviation predetermined value and shaped charge corner chip off-falling phenomenon in mold process, the precision for lifting cylinder test provides technical support.
Description
Technical field
The invention belongs to explosive column field shaping technique, it is related to a kind of explosive and press-fits mould, it is more particularly to a kind of
Press-fit mould suitable for the explosive of cylinder test.
Background technology
Cylinder test is the standardized assays for investigating explosive acting ability, is at home and abroad widely applied, and it is tested
How therefore the acting ability for directly affecting explosive sample to be assessed and the accuracy of state equation parameter, are reduced circle by error
The error of cylinder experiment is the hot issue of researcher's concern, wherein, the Forming Quality and density of explosive sample are influence cylinder examinations
Test one of key factor of error.
Explosive, which press-fits shaping, has that stock utilization is high, process route is simple, it is with short production cycle the features such as, it has also become explosive
One of most important molding mode, however, due to reasons such as raw material, compacting tool sets, the powder column after explosive is compressing is usually
In the presence of different degrees of damage, and then have influence on the precision of cylinder test result.Such as, Dong Surong et al. exists《Ammunition manufacturing process
Learn》A kind of explosive of (publishing house of Beijing Institute of Technology, 2 months, p338-341 in 2014) book report press-fits mould, by rushing
Head, die sleeve, powder column and base composition, pour into granular loose explosive in the die sleeve of definite shape when explosive press-fits shaping,
Pressurizeed on press by drift and become the powder column of definite shape and intensity, then placed below base and move back mould cylinder, led to
Cross pressure secondary to drift and exit powder column.But there is the deficiency of the following aspects in the mould：1) because base is in drift first
Can occur during secondary pressure it is certain be radially expanded, cause it to be in close contact between die sleeve, it is necessary to be applied to drift in mold process is moved back
Plus larger secondary load could exit base and shaped charge, several varied powder columns that cause of axial compressive force that drift applies
Elastic deformation causes shaped charge density to deviate predetermined value so as to cause the change of shaped charge density；2) due to moving back mold process
In, it is necessary to apply larger secondary load to drift so that the spot speed that base and powder column exit die sleeve is larger, and powder column occurs
Quick elastic expansion deformation, easily makes powder column corner occur chip off-falling phenomenon.And in cylinder test, its sample is by multiple
Press-fit shaped charge and be sequentially overlapped in cylinder and formed, press-fit the corner chip off-falling of powder column so that cylinder side wall expansion uniformity becomes
Difference, or even cylindrical wall is ruptured in advance；And grain density deviates predetermined value, then later data processing is caused relatively large deviation occur,
Influence the precision of cylinder test result.It can be seen that, existing explosive press-fits mould and is difficult to meet cylinder test for quality of explosive
Requirement.
The content of the invention
In order to overcome shortcomings and deficiencies of the prior art, the present invention provides a kind of cylinder test explosive and press-fits shaping mould
Tool, after blasting explosive granules are compressing, shaped charge, Neng Gouyou just can be slowly exited without applying larger secondary load to drift
Effect avoids moving back shaped charge density in mold process and deviates predetermined value and shaped charge corner chip off-falling phenomenon, for lifting cylinder test
Precision provide technical support.
A kind of cylinder test explosive that the present invention is provided press-fits mould, including sleeve, drift, blasting explosive granules, bottom
Seat, plug, are further characterized in that and also include sealing ring；The sleeve is that internal one end is straight hole, and the other end is bell-mouthed circle
Cylinder, drift, blasting explosive granules and base are sequentially installed with sleeve inner along close to horn mouth direction；The drift is cylinder
Body, and external diameter is equal with sleeve straight hole end internal diameter, outer wall and the sleeve straight hole end inwall H9/g8 gaps of drift coordinate, in drift
The one end contacted with blasting explosive granules is machined with annular groove, for installing sealing ring；The base is step-like cylinder, bottom
The smaller one end of seat external diameter is connected with sleeve flared end, and its external diameter is equal with sleeve straight hole end internal diameter, base external diameter small end
Outer wall and sleeve straight hole end inwall H9/g8 gaps coordinate, be machined with ventilation circular hole along the diametric(al) of base external diameter small end,
And height d of the ventilation circular hole at base step is less than the height L of sleeve flared end；With sleeve loudspeaker at the step of base
The end face at mouth end is in close contact；Horizontal air inlet circular hole is machined with along the radial direction at the larger end of base external diameter, and passes through datum axle
The axial admission circular hole in line direction is connected with ventilation circular hole；It is machined with the one end of base axial admission circular hole away from ventilation circular hole
Internal thread, for connecting plug；The plug is that diameter small end carries externally threaded round estrade, is connected by external screw thread and base
Connect, for preventing gas leak.
Distance of the annular groove of described drift one end apart from blasting explosive granules upper surface is 1~2cm；Sleeve inner horn mouth
The angle at end is α, and α is 20~40 °；The ratio between sleeve inner flared end height L and sleeve total length are 1：5~7；Base diameter
Height L high 1~2cms of the height H of small end compared with sleeve flared end；The external diameter at the larger end of base diameter is big compared with sleeve outer diameter by 1
~2cm；The ratio between the height d and sleeve flared end height L of the base external diameter small end ventilation circular hole at base step
For 1~2：3；Ventilation circular hole, the horizontal air inlet circular hole and base axis at the larger end of base external diameter of the base external diameter small end
The diameter of the axial admission circular hole in direction is 0.5~1cm.
A kind of cylinder test explosive press-fits after the completion of each part assembling of mould, and drift is applied axially using press
Load, is moved downward by drift and applies pressure to blasting explosive granules, until powder column removes the load of press after being molded；Now, pass through
The horizontal air inlet circular hole at the larger end of base diameter is filled with gases at high pressure into base, and gases at high pressure enter through base axial admission circular hole
Enter the ventilation circular hole of base diameter small end, finally by ventilation circular hole enter by base diameter small end, base step and
In the confined space that sleeve flared end is surrounded；With the continuous entrance of gases at high pressure, pressure is constantly raised in the confined space,
When pressure needed for the pressure in confined space is separated higher than base with sleeve, base will be separated from sleeve, and now
Shaped charge is still in sleeve, and its density and shape are not influenceed by the process.Due between shaped charge and sleeve lining
Frictional force is much smaller than because base is radially expanded the frictional force of generation, thus it is follow-up need to only apply less power to drift, just can by into
Type powder column is slowly exited, and then can be prevented effectively from variable density and corner chip off-falling phenomenon of the shaped charge during exiting.
A kind of cylinder test explosive of the present invention press-fits mould, and the technique effect brought is embodied in following side
Face：
1) after blasting explosive granules are compressing, base is made to be separated with sleeve by gases at high pressure, when subsequently exiting shaped charge
Without applying larger secondary load to drift, it is to avoid shaped charge density deviates predetermined value in mold process is moved back.
2) because the frictional force between shaped charge and sleeve lining is smaller, shaped charge can slowly be moved back under less pressure
Go out, corner chip off-falling phenomenon of the shaped charge in mold process is moved back can be avoided.
Brief description of the drawings
A kind of cylinder test explosive that Fig. 1 is the present invention press-fits forming die structure schematic diagram.
Fig. 2 is the structural representation of middle sleeve of the present invention.
Fig. 3 is the structural representation of drift in the present invention.
Fig. 4 is the structural representation of base in the present invention.
Label in figure is represented respectively：1st, sleeve, 2, drift, 2-1, annular groove, 3, sealing ring, 4, blasting explosive granules, 5,
Base, 5-1, ventilation circular hole, 5-2, axial admission circular hole, 5-3, horizontal communication circular hole, 6, plug.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples, it is necessary to which explanation is the present invention not office
It is limited to specific examples below, all equal conversion carried out on the basis of technical solution of the present invention are in protection scope of the present invention
It is interior.
Above-mentioned technical proposal is deferred to, as Figure 1-Figure 4, the present embodiment provides a kind of cylinder test explosive and press-fits shaping
Mould, including sleeve 1, drift 2, blasting explosive granules 4, base 5, plug 6, are further characterized in that and also include sealing ring 3；The sleeve
1 is that internal one end is straight hole, and the other end is bell-mouthed steel cylinder body, along close to bell-mouthed direction inside sleeve 1
It is sequentially installed with drift 2, blasting explosive granules 4 and base 5；The angle at the inside loudspeaker mouthful of sleeve 1 end is α, and α values are too big, and base will be fast
Speed ejection, in fact it could happen that dangerous, and damage is caused to equipment, α values are too small, and base can not be exited, big according to actually required stress
Small, it is 20~40 ° to be typically chosen α, and the ratio between the inside loudspeaker mouthful end height L of sleeve 1 and the total length of sleeve 1 are 1:5~7；This implementation
In example, the angle [alpha] of sleeve inner flared end is 20 °, and the ratio between sleeve inner flared end height L and sleeve total length are 1：5；
The drift 2 is steel cylinder, and external diameter is equal with the straight hole end internal diameter of sleeve 1, in the outer wall of drift 2 and the straight hole end of sleeve 1
Wall H9/g8 gaps coordinate, and annular groove 2-1 are machined with one end that blasting explosive granules 4 are contacted in drift 2, for installing sealing ring
3；Distances of the annular groove 2-1 apart from the upper surface of blasting explosive granules 4 is 1~2cm；In the present embodiment, annular groove 2-1 distances
The distance of the upper surface of blasting explosive granules 4 is 1cm；The base 5 be step-like steel cylinder, the smaller one end of the external diameter of base 5 with
The flared end of sleeve 1 is connected, and its external diameter is equal with the straight hole end internal diameter of sleeve 1, outer wall and the sleeve 1 of the external diameter small end of base 5
Straight hole end inwall H9/g8 gaps coordinate, height L high 1cms of the height H compared with the flared end of sleeve 1 of the diameter small end of base 5, bottom
End face at the step of seat 5 with the flared end of sleeve 1 is in close contact, and the external world that base 5 is relatively large in diameter end is big compared with the external diameter of sleeve 1
1cm；Be machined with a diameter of 0.5cm ventilation circular hole 5-1 along the diametric(al) of the external diameter small end of base 5, and ventilation circular hole 5-1 away from
It is 1~2 from the ratio between height d at the step of the base 5 and flared end height L of sleeve 1：3, in the present embodiment, ventilation circular hole 5-1 away from
It is 1 from the ratio between height d at the step of the base 5 and flared end height L of sleeve 1：3；Along the radial direction at the larger end of the external diameter of base 5
It is machined with the horizontal air inlet circular hole 5-3 of a diameter of 0.5cm, and axial admission circular hole 5-2 and ventilation circle by the axis direction of base 5
Hole 5-1 connections, the axially a diameter of 0.5cm of ventilation circular hole 5-2；In the axial admission circular hole 5-2 of base 5 away from ventilation circular hole 5-
1 one end is machined with internal thread, for connecting plug 6；The plug 6 is that diameter small end carries externally threaded steel round platform
Body, is connected by external screw thread with base 5, for preventing gas from being leaked from axial admission circular hole 5-2.
In the present embodiment, the sleeve 1 is that internal one end is straight hole, and the other end is bell-mouthed steel cylinder body, in set
Inside cylinder 1 drift 2, blasting explosive granules 4 and base 5, the end of the flared end of sleeve 1 are sequentially installed with along close to bell-mouthed direction
Face at the step of base 5 with being in close contact；The angle [alpha] at the inside loudspeaker mouthful of sleeve 1 end is 20 °, the inside loudspeaker mouthful of sleeve 1 end height
The ratio between L and the total length of sleeve 1 are 1：5.
The base is that the base 5 is step-like steel cylinder, the smaller one end of the external diameter of base 5 and the loudspeaker of sleeve 1
The connection of mouth end, and its external diameter is equal with the straight hole end internal diameter of sleeve 1, outer wall and the straight hole end inwall of sleeve 1 of the external diameter small end of base 5
H9/g8 gaps coordinate, height L high 1cms of the height H compared with the flared end of sleeve 1 of the diameter small end of base 5, at the step of base 5
It is in close contact with the end face of the flared end of sleeve 1, base 5 is relatively large in diameter the external diameter big 1cm of the external diameter compared with sleeve 1 at end；Along base 5
The diametric(al) of external diameter small end is machined with a diameter of 0.5cm ventilation circular hole 5-1, and circular hole 5-1 is at the step of base 5 for ventilation
The ratio between height d and the flared end height L of sleeve 1 be 1：3；It is machined with along the radial direction at the larger end of the external diameter of base 5 a diameter of
0.5cm horizontal air inlet circular hole 5-3, and axial admission circular hole 5-2 by a diameter of 0.5cm is connected with ventilation circular hole 5-1；
The one end of the axial admission circular hole 5-2 of base 5 away from ventilation circular hole 5-1 is machined with internal thread, for connecting plug 6.
The application method and operation principle of the present invention is as follows：First, plug 6 is connected by screw thread with base 5, and will set
Cylinder 1 is installed to the less one end of the internal diameter of base 5, and ensures that the end face at the step of base 5 with the flared end of sleeve 1 closely connects
Touch；Then, blasting explosive granules 4 are sequentially placed into sleeve 1 and the drift 1 of sealing ring 3 is installed；After the completion of each part assembling, make
Axial load is applied to drift 2 with press, is moved downward by drift 2 and pressure is applied to blasting explosive granules 4, until blasting explosive granules 4
The load of press is removed after shaping；Now, the horizontal air inlet circular hole 5-3 for being relatively large in diameter end through base 5 is filled with high pressure into base 5
Gas, gases at high pressure enter the ventilation circular hole 5-1 of the diameter small end of base 5 through the axial admission circular hole 5-2 of base 5, finally by leading to
Gas circular hole 5-1 enters in the confined space that the diameter small end of base 5, the step of base 5 and the flared end of sleeve 1 are surrounded；
With the continuous entrance of gases at high pressure, pressure is constantly raised in the confined space, when the pressure in confined space higher than base 5 with
Needed for sleeve 1 is separated during pressure, base 5 will be separated from sleeve 1, and now shaped charge is still in sleeve, and its is close
Degree and shape are not influenceed by the process.Because the frictional force between shaped charge and the inwall of sleeve 1 is much smaller than because base 5 is radially swollen
The frictional force of swollen generation, therefore follow-up need to apply less power to drift 2, just can slowly exit shaped charge, and then can have
Effect avoids variable density and corner chip off-falling phenomenon of the shaped charge in mold process is moved back.
Explosive density predetermined value is 1.830g/cm3, through original mould, (Dong Surong et al. exists《Ammunition manufacturing technology》(north
Capital BJ Universithy of Polytech Press, 2 months, p338-341 in 2014) book report a kind of explosive press-fit mould) pressed explosive,
Randomly select 10 samples and carry out density measurement according to national military standard GJB772A-97 explosive tests method (method 401.2), simultaneously
Using same procedure, the explosive density suppressed through inventive die, test result such as following table are measured：
From form as can be seen that the degree of the compressing explosive density skew density predetermined value of original mould is larger, it is
1.04%；Deviation through the compressing explosive density skew predetermined value of inventive die is smaller, is 0.11%.
A kind of cylinder test explosive of the present invention press-fits mould, after blasting explosive granules 4 are compressing, without liquidating
First 2 apply larger secondary load, just can slowly exit shaped charge, it is to avoid move back shaped charge density in mold process and deviate pre-
Definite value and shaped charge corner chip off-falling phenomenon, the precision for lifting cylinder test provide technical support.
Claims (4)
1. a kind of cylinder test explosive press-fits mould, including sleeve (1), drift (2), blasting explosive granules (4), base (5),
Plug (6), is further characterized in that and also includes sealing ring (3)；The sleeve (1) is that internal one end is straight hole, and the other end is loudspeaker
The cylinder of mouth, the angle at sleeve (1) inside loudspeaker mouthful end is α, and α is 20~40 °, internal along close loudspeaker in sleeve (1)
The direction of mouth is sequentially installed with drift (2), blasting explosive granules (4) and base (5)；The drift (2) is cylinder, and external diameter and set
Cylinder (1) straight hole end internal diameter is equal, and outer wall and sleeve (1) the straight hole end inwall H9/g8 gaps of drift (2) coordinate, drift (2) with
One end of blasting explosive granules (4) contact is machined with annular groove (2-1), for installing sealing ring (3)；The base (5) is step
The cylinder of shape, base (5) smaller one end of external diameter is connected with sleeve (1) flared end, and in its external diameter and sleeve (1) straight hole end
Footpath is equal, and the outer wall of base (5) external diameter small end coordinates with sleeve (1) straight hole end inwall H9/g8 gaps, base (5) diameter compared with
The height H of small end compared with sleeve (1) flared end height L 1~2cm of length, with sleeve (1) flared end at the step of base (5)
End face be in close contact, be machined with ventilation circular hole (5-1), and ventilation circular hole (5- along the diametric(al) of base (5) external diameter small end
1) the ratio between the height d at base (5) step and sleeve (1) flared end height L is 1~2：3；Along base (5) external diameter compared with
The radial direction held greatly is machined with horizontal air inlet circular hole (5-3), and passes through the axial admission circular hole (5- of base (5) axis direction
2) it is connected with ventilation circular hole (5-1)；It is machined with the one end of base (5) axial admission circular hole (5-2) away from ventilation circular hole (5-1)
Internal thread, for connecting plug (6)；The plug (6) be diameter small end carry externally threaded round estrade, by external screw thread with
Base (5) is connected, for preventing gas from being leaked from axial admission circular hole (5-2).
2. a kind of cylinder test explosive as claimed in claim 1 press-fits mould, it is characterised in that in the sleeve (1)
The ratio between portion flared end length H and sleeve (1) total length are 1：5~7.
3. a kind of cylinder test explosive as claimed in claim 1 press-fits mould, it is characterised in that the drift (2)
Distance of the annular groove (2-1) apart from blasting explosive granules (4) upper surface is 1~2cm.
4. a kind of cylinder test explosive as claimed in claim 1 press-fits mould, it is characterised in that the base (5) is straight
The external diameter at the larger end in footpath is compared with sleeve (1) big 1~2cm of external diameter；The ventilation circular hole (5-1), base (5) of base (5) external diameter small end
The diameter of the horizontal air inlet circular hole (5-3) at the larger end of external diameter and the axial admission circular hole (5-2) of base (5) axis direction is
0.5~1cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710304267.3A CN106977356B (en) | 2017-05-03 | 2017-05-03 | A kind of cylinder test explosive press fitting molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710304267.3A CN106977356B (en) | 2017-05-03 | 2017-05-03 | A kind of cylinder test explosive press fitting molding die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106977356A true CN106977356A (en) | 2017-07-25 |
| CN106977356B CN106977356B (en) | 2018-11-13 |
Family
ID=59342332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710304267.3A Expired - Fee Related CN106977356B (en) | 2017-05-03 | 2017-05-03 | A kind of cylinder test explosive press fitting molding die |
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| Country | Link |
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| CN (1) | CN106977356B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108707054A (en) * | 2018-05-10 | 2018-10-26 | 西安近代化学研究所 | A kind of prefabricated density gradient explosive molding powder compacting tool set |
| CN109187913A (en) * | 2018-08-28 | 2019-01-11 | 西安近代化学研究所 | A kind of cylinder test Simplified Test Equipment |
| CN109764770A (en) * | 2019-03-15 | 2019-05-17 | 北京理工大学 | A kind of press-loading apparatus and method automating more diameters powder column with holes |
| CN112125764A (en) * | 2020-08-28 | 2020-12-25 | 西安近代化学研究所 | Explosive compression molding device |
| CN113790640A (en) * | 2021-09-16 | 2021-12-14 | 太原师范学院 | Fuel press-fitting mold for cylindrical thin-wall structure projectile body and using method thereof |
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| CN103242115A (en) * | 2013-05-14 | 2013-08-14 | 山东圣世达化工有限责任公司 | Water gel and ammonium nitrate fuel oil explosive and production method thereof |
| CN103322869A (en) * | 2013-05-20 | 2013-09-25 | 西安近代化学研究所 | Missile body charge friction environment simulating device |
| CN204694522U (en) * | 2015-06-18 | 2015-10-07 | 西安科技大学 | A kind of pneumatic type concrete sample stripper apparatus |
| CN105928871A (en) * | 2016-05-30 | 2016-09-07 | 北京理工大学 | Forming explosive friction testing system and testing method thereof |
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| CN103242115A (en) * | 2013-05-14 | 2013-08-14 | 山东圣世达化工有限责任公司 | Water gel and ammonium nitrate fuel oil explosive and production method thereof |
| CN103322869A (en) * | 2013-05-20 | 2013-09-25 | 西安近代化学研究所 | Missile body charge friction environment simulating device |
| CN204694522U (en) * | 2015-06-18 | 2015-10-07 | 西安科技大学 | A kind of pneumatic type concrete sample stripper apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108707054A (en) * | 2018-05-10 | 2018-10-26 | 西安近代化学研究所 | A kind of prefabricated density gradient explosive molding powder compacting tool set |
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| CN109187913A (en) * | 2018-08-28 | 2019-01-11 | 西安近代化学研究所 | A kind of cylinder test Simplified Test Equipment |
| CN109187913B (en) * | 2018-08-28 | 2021-05-18 | 西安近代化学研究所 | Simple testing device for cylinder test |
| CN109764770A (en) * | 2019-03-15 | 2019-05-17 | 北京理工大学 | A kind of press-loading apparatus and method automating more diameters powder column with holes |
| CN109764770B (en) * | 2019-03-15 | 2020-08-07 | 北京理工大学 | Automatic press-fitting device and method for multi-diameter perforated explosive columns |
| CN112125764A (en) * | 2020-08-28 | 2020-12-25 | 西安近代化学研究所 | Explosive compression molding device |
| CN112125764B (en) * | 2020-08-28 | 2021-10-08 | 西安近代化学研究所 | Explosive compression molding device |
| CN113790640A (en) * | 2021-09-16 | 2021-12-14 | 太原师范学院 | Fuel press-fitting mold for cylindrical thin-wall structure projectile body and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106977356B (en) | 2018-11-13 |
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Granted publication date: 20181113 |