CN1554922A - Under water energy converging and explosive charging method with foam material filling hole - Google Patents
Under water energy converging and explosive charging method with foam material filling hole Download PDFInfo
- Publication number
- CN1554922A CN1554922A CNA2003101208691A CN200310120869A CN1554922A CN 1554922 A CN1554922 A CN 1554922A CN A2003101208691 A CNA2003101208691 A CN A2003101208691A CN 200310120869 A CN200310120869 A CN 200310120869A CN 1554922 A CN1554922 A CN 1554922A
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- CN
- China
- Prior art keywords
- under water
- present
- charge
- energy converging
- explosive
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 14
- 239000002360 explosive Substances 0.000 title abstract description 12
- 239000006261 foam material Substances 0.000 title description 2
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000006260 foam Substances 0.000 claims description 13
- 239000000843 powder Substances 0.000 claims description 10
- 230000001186 cumulative effect Effects 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 238000013467 fragmentation Methods 0.000 claims description 2
- 238000006062 fragmentation reaction Methods 0.000 claims description 2
- 229920006327 polystyrene foam Polymers 0.000 claims 1
- 238000005474 detonation Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000005422 blasting Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000004793 Polystyrene Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
Landscapes
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
The present invention belongs to the field of explosive and detonation technology, and provides one kind of underwater energy converging explosive filling method. The present invention features that low density closed hole foamed material is used to fill the formed and charged energy converging hole or flying cavity of forged bullet. The present invention eliminates the sealing and has no failure of the sealed cavity caused collision, overpressure and other causes. The method may be used universally in various cavities with axially symmetrical or linear energy converging charge of different shapes and with or without cover, and in forged bullet. The present invention has reduced weight, simple technological process and low cost.
Description
Technical field
The invention belongs to ammunition and explosive technical field, refer more particularly to the hole beehive-shaped charge.
Background technology
Explosive hole Mohaupt effect is used widely in all fields such as military and civilians, be used to make armor-piercing bullet, priming bomb, petroleum perforation charge as the powder charge of axisymmetric hole, and underwater reef explosion or the like, the line style beehive-shaped charge also is widely used in antitank mine, destroys and remove steel construction, cutting shipwreck, presplit blasting etc.
The beehive-shaped charge branch has cover and does not have two kinds on cover.The principle of not having the cover beehive-shaped charge is, when explosive charge, detonation gas disperses at a high speed by the scope of freedom of cavity, converge to symmetrical center line, collision forms the high density gas jet of high speed preshoot on symmetrical center line, when this jet impulse is on target plate, will produce strong partial penetration's effect to target plate.The powder charge of band energy gathering cap is that when explosive charge, detonation gas promotes energy gathering cap, symmetrical center line to cavity converges, energy gathering cap collides on symmetrical center line, and the high speed angular impact of energy gathering cap makes its inner surface material be stripped from, and forms the jet of high speed preshoot.On above-mentioned principle, no matter be cover to be arranged and do not have the cover beehive-shaped charge, the necessary condition that produces jet is exactly the existence of cavity, and this also is well-known.Therefore, the shaped-charge that is used under water must be carried out the strictness sealing to the cumulative cavity, prevents water inlet in the cavity, in case the cavity water inlet, powder charge will not have cumulative action.Yet many beehive-shaped charges need to place for a long time under water, as submarine mine, cutter etc. under water, so strict sealed package is necessary.And tight excessively sealed package will expend wide variety of materials, make complexity that technology becomes, loaded down with trivial details, and especially in weapons, too much sealing can cause the increase of weapon weight; Simultaneously, general hermetically-sealed construction also in use leaks easily, causes the powder charge reliability decrease.Moreover if encapsulating housing is blocked up, the jet that blast is produced must pass shell layer ability penetrating steel target earlier, and this also can cause the loss of jet energy.
Summary of the invention
The objective of the invention is: provide a kind of simple, cheap, ensure and exceed the method that reduces powder charge armour-piercing effect again in beehive-shaped charge hole under water reliably.
Technical scheme of the present invention is:
Ensure that under water cumulative cavity the simplest not water filled method is, the low-density medium good with compressibility is full of cavity in advance, and closed-cell foam material is such material just.
The density of explosive that beehive-shaped charge as everyone knows, is used is generally at 1～1.8gcm
-3Between, pressure can reach 2～30GPa after the detonation, and product density is at 1.4～2.5gcm
-3Between.If the density of foamed material is 0.2gcm
-3, its density only is 14.2%～8% of detonation product; If the density of foam is 0.1gcm
-3, its density only is 7.1%～4% of detonation product; Foamed material has great compressibility in addition, and this has just guaranteed that foam can exceedingly not influence detonation product or energy gathering cap to the converging of center line, and also can exceedingly not influence the generation of jet, thereby, can guarantee the armour-piercing effect.Because foam can exceedingly not influence the flight of energy gathering cap, this method also can be used for from the forging molding bullet, as its acceleration and molding cavity.
The step that realizes technical solution of the present invention is as follows:
By the void shape of beehive-shaped charge, precast the foam element of powder charge void shape, the hole that foam element is snugly fitted into beehive-shaped charge gets final product; To the beehive-shaped charge of band cover, also can in energy gathering cap, directly foam out behind the foam element, assemble.
Effect of the present invention and benefit are:
1) need not seal the hole of beehive-shaped charge; 2) cumulative armour-piercing effect stability is reliable, not can owing to collide with, reason such as overvoltage, produce seal failure; 3) can be general in the different shape cavity that cover, nothing cover are arranged of axial symmetry beehive-shaped charge, line style beehive-shaped charge, also can be used for from the forging molding bullet; 4) can alleviate the weight of beehive-shaped charge; 5) its biggest advantage is that technology is simple, cheap.
The specific embodiment
Below be described in detail most preferred embodiment of the present invention:
Embodiment 1
With the C4 explosive is main blasting charge (density 1.4gcm
-3, explosion velocity 6900ms
-1) make cumulative line style cutter, metal cap is a 0.8mm iron plate, the right angle cover, covering wide is 20mm, and every meter explosive payload 500g is a target plate with the 40mm steel plate, and the average depth of cut of this cutter is 18mm.With density is 0.1gcm
-3Polystyrene foam plastics, making cross sectional shape is the isosceles right triangle bar of 35mm straight flange, is fixed in the iron cover of above-mentioned cutter, it is under water dark that 40mm steel target plate and cutter are placed on 1m, recording depth of cut after the blast is 15～18mm.
Embodiment 2
Adding 20% epoxy resin with the RDX powder is main blasting charge (density 1.43gcm
-3, explosion velocity 6500ms
-1) make armor-piercing bullet, metal cap is a 1mm iron plate, 60 ° of drift angle cone-shaped hoods, bus length 60mm, explosive payload 260g is a target plate with the steel plate, wearing of this armor-piercing bullet is 120mm deeply.With density is 0.1gcm
-3Polystyrene foam plastics, make 60 ° of drift angle cones, be fixed in the cone-shaped hood, it is under water dark that steel target and armor-piercing bullet are placed on 2m, records after the blast that to wear be 110～120mm deeply.
Embodiment 3
Adding 20% epoxy resin with the RDX powder is main blasting charge (density 1.43gcm
-3, explosion velocity 6500ms
-1) make submissile, metal cap is a 1mm iron plate, 120 ° of drift angle cone-shaped hoods, bus length 10mm, explosive payload 8g, this self forge fragmentation bullet can be penetrated disconnected Φ 16mm reinforcing bar.With density is 0.1gcm
-3Polystyrene foam plastics, make the cylinder that has 120 ° of drift angles awl on the high cylinder of 8mm, cone segments is fixed in the cone-shaped hood, under water dark at 2m, can penetrate disconnected Φ 16mm reinforcing bar.
Claims (1)
1. the method for the beehive-shaped charge under water of a foamed material filling hole is characterized in that adopting the flying cavity of low-density closed-cell foam filling molding powder charge cumulative hole and self forge fragmentation powder charge, and the density of this low-density closed-cell foam is at 0.2gcm
-3Below, optimum value is 0.1gcm
-3Below, the optimal material of low-density closed-cell foam is a polystyrene foam plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101208691A CN1554922A (en) | 2003-12-27 | 2003-12-27 | Under water energy converging and explosive charging method with foam material filling hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101208691A CN1554922A (en) | 2003-12-27 | 2003-12-27 | Under water energy converging and explosive charging method with foam material filling hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1554922A true CN1554922A (en) | 2004-12-15 |
Family
ID=34338331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003101208691A Pending CN1554922A (en) | 2003-12-27 | 2003-12-27 | Under water energy converging and explosive charging method with foam material filling hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1554922A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008037156A1 (en) * | 2006-09-28 | 2008-04-03 | Bingxu Zheng | An energy-collecting bomb for exploding underwater and an arranging method thereof |
| CN107218862A (en) * | 2017-07-09 | 2017-09-29 | 贵州大学 | A kind of underwater demolition cumulative bullet and distribution method |
-
2003
- 2003-12-27 CN CNA2003101208691A patent/CN1554922A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008037156A1 (en) * | 2006-09-28 | 2008-04-03 | Bingxu Zheng | An energy-collecting bomb for exploding underwater and an arranging method thereof |
| CN107218862A (en) * | 2017-07-09 | 2017-09-29 | 贵州大学 | A kind of underwater demolition cumulative bullet and distribution method |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |