CN113048849B - Composite bullet and manufacturing method thereof - Google Patents
Composite bullet and manufacturing method thereof Download PDFInfo
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- CN113048849B CN113048849B CN202110140725.0A CN202110140725A CN113048849B CN 113048849 B CN113048849 B CN 113048849B CN 202110140725 A CN202110140725 A CN 202110140725A CN 113048849 B CN113048849 B CN 113048849B
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- bullet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/04—Alloys based on tungsten or molybdenum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0094—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with organic materials as the main non-metallic constituent, e.g. resin
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
Abstract
The invention discloses a composite material warhead and a manufacturing method thereof, wherein the composite material warhead comprises the following components in parts by weight: 100 parts of epoxy resin; 25-100 parts of a curing agent; 0 to 2200 parts of weight powder; wherein the weight ratio of the total weight of the epoxy resin and the curing agent to the weight powder is 1: (0 to 11). The bullet cannot burst in a gun bore with bore pressure of 250MPa, has a bullet type structure which can resist 3500 rpm/s rotation centrifugal force tearing in a bore-out state, and can be directly used in a gun after replacing a metal bullet of the metal bullet; when the bullet flies out of the gun bore and impacts a steel plate, the bullet is easy to break into powder, and the danger of rebound of bullet fragments is avoided; the bullet trajectory simulation device can completely simulate the trajectory of an original metal bullet within a distance of 10 meters, keeps good hit precision, is particularly suitable for military police tactical shooting training, and can also be used as an alternative bullet for a police party on duty in some special situations.
Description
Technical Field
The invention relates to the field of warhead application for military police training, in particular to a composite warhead and a manufacturing method thereof.
Background
The prior training bullets adopted for the military police tactical shooting training comprise round paintballs, color marking bullets and metal bullets, wherein the similar metal bullets are launched by gunpowder.
The round paintballs are plastic balls filled with color powder or liquid, are launched pneumatically, cannot use standard guns to carry out shooting training during military and police training, and cannot carry out many tactical actions; and the round paintball has light weight, large air resistance and close range, and can not simulate the trajectory of the military police type gun and live ammunition shooting.
The color marking bullet is a specially-made pre-divided plastic bullet launched by a small amount of gunpowder, and the bullet can be cracked after hitting a target, and a remarkable and washable colorant mark is left on the target, so that the training purpose of simulating confrontation is achieved. However, the bullet of the color marking bullet is made of plastic, in order to prevent the bullet of the plastic from being broken in the gun bore, the dosage of gunpowder is less than 1/3 of the dosage of the normal bullet, the firing range is only about 20 meters, the effective firing range is less than 10 meters, even about 5 meters, and the requirement of actual combat training on the firing range cannot be met; in addition, because the amount of the explosive of the color marking bullet is small, in order to enable the real gun to realize automatic shooting, the 92 gun needs to be transformed by marking bullet accessories on the basis of the 92 real gun when training, for example, the gun barrel and the gun strike need to be replaced, the locking mode also needs to be changed into a free gun machine, and inconvenience is brought during training.
The metal bullet is an actual combat warhead, the shell is generally made of copper sheets or iron sheets, and lead blocks or lead blocks and other metal objects are filled in the metal bullet, so that the metal bullet has a strong harm effect on a human body, even can cause death of a person and cannot be used for direct shooting when the person performs confrontation training; when the metal bullets shoot on the steel plate targets, a large amount of metal fragments can be generated, so that shooting training personnel can be injured by rebounding and splashing, and the danger is great; therefore, when the ball firing training is carried out, the wooden target plate is generally adopted, the reuse rate is low, a bullet-stopping system and a ventilation and smoke dust-discharging system need to be built in a firing place, the expensive bulletproof steel plate with the thickness of more than 8 millimeters is adopted, and the shooting training cost is high.
On the other hand, police often meet the situation that need hold the gun and open the gun and uniform the gangster while on duty. The round paintballs have almost no harm to human bodies; the color marking bullet has limited damage degree to the human body and can not effectively immerse into the human body to cause the human body to lose mobility; neither of the above warheads can be used as weapons ammunition on duty. The metal warhead has strong penetrating power, can penetrate through a steel plate with certain thickness, and easily penetrates through an aircraft cabin when executing a cabin task, so that air leakage and low pressure are caused, and the life safety of passengers is endangered; when tasks are executed on flammable and explosive sites such as oil storage tanks, liquefied gas tanks and the like, the metal tank bodies are easy to penetrate, and fire and explosion are caused; when tasks are executed in crowded places such as subways and other vehicles, streets, shopping malls or airports, and the like, innocent people are easily injured by mistake, good opportunity selection of gun firing opportunities of law enforcement personnel is limited, violence and terrorism molecules cannot be overcome in time, and unnecessary casualties of surrounding people can be caused. Therefore, the use of metal warheads as weapons ammunition on duty is also limited in various situations.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a composite bullet, which is suitable for military police tactical shooting training and can be used as an alternative bullet for a bullet when a police performs on duty in a special situation.
The invention also aims to provide a manufacturing method of the composite material bullet.
The invention is realized by the following technical scheme:
the composite material warhead comprises the following components in parts by weight:
100 parts of epoxy resin;
25-100 parts of a curing agent;
0 to 2200 parts of weight powder;
wherein, the weight ratio of the total weight of the epoxy resin and the curing agent to the weight powder is 1: (0 to 11).
According to the invention, researches show that the composite material warhead prepared by selecting the epoxy resin as the matrix resin material and adding a specific amount of the curing agent has the advantages of strength and toughness, can meet the requirements of anti-bore pressure, anti-bore line extrusion friction and anti-high-speed centrifugal force tearing, and is fragile and powdery under the action of strong impact.
In the formula, the dosage of the curing agent needs to be controlled, and the excessive dosage of the curing agent can cause the hardness of the warhead to be too high, so that the warhead is easy to generate blocks when being impacted and broken, thereby causing the risk of hurting people, and the crack resistance of the warhead is reduced, so that the warhead is easy to crack when being squeezed and rubbed by rifling; the hardness of the bullet is too low due to too small addition amount of the curing agent, and the bullet is easy to deform when pushed by deflagration gas in a gun bore and extruded and rubbed by rifling to be discharged from a gun mouth, so that the rotation frequency is greatly reduced, and the hit precision is seriously influenced. Preferably, the using amount of the curing agent is 45-55 parts.
By adding the balance weight powder in a certain proportion, the composite material bullet has proper weight, the flying track of the composite material bullet can be kept as much as possible, the trajectory of the metal bullet is simulated, and good hit precision is kept; meanwhile, the fragility of the bullet under the action of strong impact can be improved. The addition amount of the balance weight powder cannot be too much, otherwise, uniform mixing is difficult to realize, and the prepared bullet has low hardness and is fragile when being extruded by rifling in a gun bore. Preferably, the weight ratio of the total weight of the epoxy resin and the curing agent to the weight powder is 1: (2.5 to 9).
The viscosity of the mixture formed by mixing the epoxy resin and the curing agent influences the addition and mixing of the subsequent weight powder, the viscosity is too high, the total volume of the weight powder which can be mixed is reduced, the specific gravity of the weight powder in the bullet is reduced, and the total weight of the bullet is influenced. Preferably, the viscosity of a mixture formed by mixing the epoxy resin and the curing agent at 25 ℃ is 400-600cps.
The invention has no requirements on the types and specification parameters of the epoxy resin, and the general epoxy resin can achieve the aim of the invention. Specifically, the epoxy resin is selected from any one or more of bisphenol A type epoxy resin, bisphenol F type epoxy resin, polyphenol type glycidyl ether epoxy resin, aliphatic glycidyl ether epoxy resin, glycidyl ester type epoxy resin or glycidyl amine type epoxy resin. In order to realize the balance of better toughness and brittle composite performance of the composite material bullet, preferably, the epoxy resin is selected from any one or more of bisphenol A type epoxy resins.
The invention preferably adopts epoxy resin with the viscosity of 1000 to 13000cps at 25 ℃; more preferably, an epoxy resin having a viscosity of 1000 to 8000cps at 25 ℃ is used.
The selected curing agent is a low-temperature curing agent, and if the curing temperature of the curing agent is too high, the temperature is required to be raised for curing in the manufacturing process of the composite material warhead, so that the warhead is easy to deform, and the error of the size of the warhead from the actual requirement is large; and bubbles are easily generated in the warhead, so that the use of the warhead is influenced. Preferably, the curing agent is selected from any one or more of amine curing agents; the amine curing agent is selected from any one or more of polyamide, ethylenediamine, hexamethylenediamine, diethylenetriamine, triethylene tetramine or diethylaminopropylamine. The invention preferably adopts a curing agent with the viscosity of 250 to 1000cps at 25 ℃; more preferably, a curing agent having a viscosity of 250 to 600cps at 25 ℃ is used.
According to the invention, the epoxy resin and the curing agent within the preferable viscosity range are adopted, and a mixture with proper viscosity can be obtained through mixing in the preparation process of the warhead, so that the blending of the balance weight powder is facilitated, the uniform mixing can be realized, and the good mold filling formability can be realized.
The counterweight powder is selected from any one or more of metal powder or metal alloy powder. The metal powder is selected from any one or more of iron powder, copper powder, tin powder or tungsten powder; the metal alloy powder is selected from one or more of tungsten alloy powder, iron alloy powder, copper alloy powder, nickel alloy powder or cobalt alloy powder. Preferably, the weight powder is 100 to 1000 meshes. The counterweight powder particles have too large diameter, are not easy to fill a mould, and easily generate large-volume granular objects when being crushed by impact, thereby having the risk of hurting people.
The invention also provides a manufacturing method of the composite material warhead, which comprises the following steps:
according to the proportion, the epoxy resin and the curing agent are uniformly mixed, then the balance weight powder is added and uniformly mixed, the mixture is filled into a bullet mould, and after curing and forming, the composite material bullet is prepared.
Wherein the curing temperature is 25-35 ℃; the curing time is not less than 48h. The curing time is too short, which may result in incomplete curing, easy deformation during storage and improper use.
The invention requires that the diameter error of the manufactured composite material warhead is within 0.1mm, and the warhead is too large in size, so that the warhead cannot be loaded into a shell; the bullet size undersize not only causes too big with the clearance of shell case, has reduced gas expansion power when powder deflagration, leads to thrust not enough, but also can reduce the rotating action of rifling to the bullet, causes rotational frequency to reduce, has reduced the hit precision of bullet in flight process.
The epoxy resin can be adhered to molds made of hardware, plastics and the like, and cannot be demolded, and the warhead mold adopted by the invention is an organic silicon flexible glue cavity warhead mold; the organic silicon has stable chemical properties, does not react with any substance except strong alkali and hydrofluoric acid, has weak surface tension, small surface energy and strong film forming capability, cannot be adhered with an epoxy resin mixture, and can ensure the smoothness of the surface of the manufactured bullet; in addition, the influence of temperature change on the size of the organic silicon soft rubber mold is extremely small, the organic silicon soft rubber cavity warhead mold is calculated by combining the shrinkage of the organic silicon soft rubber and the shrinkage of the cured epoxy resin mixture, the size of the warhead prepared by the organic silicon soft rubber cavity warhead mold is required to be 0.5-1% larger than that of the warhead prepared by actual requirements, and the diameter error of the manufactured composite warhead can be within 0.1 mm; preferably, the size of the organosilicon flexible glue cavity warhead mould is 0.7-0.8% larger than that of the warhead prepared according to actual requirements.
Preferably, the tip end of the bullet mould is vertically placed downwards during solidification and forming, so that the counterweight powder is precipitated slightly towards the tip end, the density of the tip end of the bullet is slightly larger than the rear end of the bullet, and the stability of the bullet in flight is improved.
Compared with the prior art, the invention has the following beneficial effects:
(1) The composite material bullet has good strength and toughness, can not burst in a gun bore with bore pressure of 250MPa, has a bullet type structure which can resist 3500 rpm/s rotating centrifugal force tearing in a bore-out state, and can be used in a manufacturing gun after directly replacing the metal bullet of a metal bullet; the powder is broken into powder when the powder flies out of the gun chamber and impacts a steel plate (the powder is crushed into fog when the powder is shot on the steel plate at a distance of 10 meters; the powder is crushed by a bullet of a 7075 aluminum alloy sheet with the thickness of 5mm when the powder is shot at a distance of 3 meters, and the sheet does not penetrate through the bullet); in addition, the composite material bullet head is proper in weight, can completely simulate the trajectory of an original metal bullet head within a distance of 10 meters, and keeps good hit precision. Therefore, in the case of using the protector, the practice bullet confrontation shooting training can be carried out by using the bullet head of the invention directly by using the standard gun.
(2) The composite warhead does not contain lead powder and is nontoxic, and the warhead is crushed when impacting a steel plate, so that the danger caused by rebound of bullet fragments is avoided, and therefore, a steel plate target (which can be repeatedly used) can be used in live-action shooting training, and an expensive bullet-stopping system and a ventilation and smoke-dust-discharging system are not required to be built in a shooting training field; the protection steel plate adopts a common 2mm steel plate to achieve the bullet-receiving effect, and the shooting training cost is greatly reduced.
(3) The composite warhead can be immersed into a human body, limits the mobility of people, and can be used as an alternative warhead of a bullet on duty; the bullet of the invention has the property of easy pulverization, can not penetrate through metal materials such as engine rooms, metal oil and gas storage tanks, bulletproof shields and the like, and has the harmfulness which is not like metal bullets, so that when the mobility of people is limited, fatal harm can be avoided; the system is suitable for various law enforcement actions in the process of carrying out cabin tasks, flammable and explosive oil and gas storage fields, crowd-concentrated places or other special situations.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any manner. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
The raw materials used in the examples of the present invention and the comparative examples are commercially available, but are not limited to these materials:
epoxy resin 1: bisphenol A epoxy resin with the viscosity of 5000 to 8000cps (25 ℃);
epoxy resin 2: bisphenol A type epoxy resin, viscosity is 1000 to 3000cps (25 ℃);
epoxy resin 3: bisphenol F type epoxy resin with the viscosity of 1000 to 3000cps (25 ℃);
epoxy resin 4: aliphatic glycidyl ether epoxy resin with viscosity of 1000 to 3000cps (25 deg.C);
curing agent 1: hexamethylenediamine, viscosity 250 to 600cps (25 ℃);
curing agent 2: diethylenetriamine, with a viscosity of 250 to 600cps (25 ℃);
curing agent 3: diethylaminopropylamine with a viscosity of 250 to 600cps (25 ℃);
1, balance weight powder: 1, 600 meshes of tungsten powder;
and (3) counterweight powder 2: copper powder, 400 mesh;
and (3) counterweight powder: 800 mesh tungsten carbide powder.
And (4) counterweight powder: 2, 80 meshes of tungsten powder;
example 1:
1 part of epoxy resin;
50 parts of hexamethylene diamine;
1 part of tungsten powder;
and (2) uniformly mixing the epoxy resin and the curing agent, adding the tungsten powder, uniformly mixing, filling into an organic silicon soft rubber cavity warhead mould, curing for 48 hours at the temperature of 28 ℃, and curing and forming to obtain the composite warhead.
Example 2:
2 parts of epoxy resin;
50 parts of hexamethylene diamine;
1 part of tungsten powder;
and (2) uniformly mixing the epoxy resin and the curing agent, adding the tungsten powder, uniformly mixing, filling into an organic silicon soft rubber cavity warhead mould, curing for 48 hours at the temperature of 28 ℃, and curing and forming to obtain the composite warhead.
Example 3:
1 part of epoxy resin;
50 parts of hexamethylene diamine;
1 part of tungsten powder, 1500 parts;
and (2) uniformly mixing the epoxy resin and the curing agent, adding the tungsten powder, uniformly mixing, filling into an organic silicon soft rubber cavity warhead mould, curing for 48 hours at the temperature of 28 ℃, and curing and forming to obtain the composite warhead.
Example 4:
1 part of epoxy resin;
80 parts of hexamethylene diamine;
1 part of tungsten powder;
and (2) uniformly mixing the epoxy resin and the curing agent, adding the tungsten powder, uniformly mixing, filling into an organic silicon soft rubber cavity warhead mould, curing for 48 hours at the temperature of 28 ℃, and curing and forming to obtain the composite warhead.
Example 5:
3 parts of epoxy resin;
diethylaminopropylamine 35 parts;
135 parts of copper powder;
and uniformly mixing the epoxy resin and the curing agent, adding copper powder, uniformly mixing, filling into an organic silicon soft rubber cavity warhead mould, curing for 50 hours at the temperature of 25 ℃, and curing and forming to obtain the composite warhead.
Example 6:
4 parts of epoxy resin;
80 parts of diethylenetriamine;
1500 parts of tungsten carbide powder;
and (3) uniformly mixing the epoxy resin and the curing agent, adding the tungsten carbide powder, uniformly mixing, filling into an organic silicon soft rubber cavity bullet mould, curing for 48 hours at the temperature of 26 ℃, and curing and forming to obtain the composite material bullet.
Comparative example 1:
1 part of epoxy resin;
20 parts of hexamethylene diamine;
1 part of tungsten powder;
and (3) uniformly mixing the epoxy resin and the curing agent, adding tungsten powder, uniformly mixing, filling into an organic silicon soft rubber cavity bullet mould, curing for 48 hours at the temperature of 28 ℃, and curing and forming to obtain the composite material bullet.
Comparative example 2:
1 part of epoxy resin;
125 parts of hexamethylene diamine;
1 part of tungsten powder;
and (2) uniformly mixing the epoxy resin and the curing agent, adding the tungsten powder, uniformly mixing, filling into an organic silicon soft rubber cavity warhead mould, curing for 48 hours at the temperature of 28 ℃, and curing and forming to obtain the composite warhead.
Comparative example 3:
1 part of epoxy resin;
50 parts of hexamethylene diamine;
1 part of tungsten powder;
and (3) uniformly mixing the epoxy resin and the curing agent, adding tungsten powder, uniformly mixing, filling into an organic silicon soft rubber cavity bullet mould, curing for 48 hours at the temperature of 28 ℃, and curing and forming to obtain the composite material bullet.
Comparative example 4:
1 part of epoxy resin;
50 parts of hexamethylene diamine;
2 parts of tungsten powder;
and (2) uniformly mixing the epoxy resin and the curing agent, adding the tungsten powder, uniformly mixing, filling into an organic silicon soft rubber cavity warhead mould, curing for 48 hours at the temperature of 28 ℃, and curing and forming to obtain the composite warhead.
The related performance test method comprises the following steps:
(1) And (3) soft landing testing: the live ammunition test was carried out using a pistol, the composite ammunition heads from the examples or comparative examples were placed in a cartridge holder, loaded into the pistol, fired at a distance of 3m from the fire, and shot into a sand pile or a bucket to make a soft landing.
If the bullet is intact after the test, the bullet does not burst in the bore with bore pressure of 250MPa, and the bullet does not tear by itself under the centrifugal force generated by 3500 r/s rotation after being taken out of the bore.
(2) And (3) steel plate impact test: the live ammunition test was carried out using a pistol, and the composite ammunition heads obtained in examples or comparative examples were inserted into a cartridge holder, loaded into the pistol, fired against a vertically disposed 8 mm thick bulletproof steel plate at 15 m, and observed for the state of the ammunition head after striking the steel plate. While a metal bullet was used for the test.
(3) Shooting test of the aluminum alloy sheet: a live test was conducted using a pistol, the composite material bullet produced in the example or comparative example was placed in a cartridge holder, loaded into the pistol, fired against a 7075 aluminum alloy sheet having a thickness of 5mm vertically placed at a position of 3m, and observed for the state of the bullet after hitting the aluminum alloy sheet, and the state of the aluminum alloy sheet. While a metal bullet was used for the test as a comparison.
(4) Ballistic testing: the live ammunition test was carried out using a pistol, the composite ammunition heads of the examples or comparative examples were placed in a cartridge holder and loaded into the pistol, the pistol was held with a frame at a distance of 10 m from the chest target, the target was aimed, 5 rounds of ammunition were fired continuously, the distance between the 5 round of ammunition hole and the target was measured and the deviation tolerance was calculated. While a metal bullet was used for the test.
Table 1: results of performance test of composite warheads in examples 1 to 4 and comparative examples 1 to 3
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | |
| Soft landing test | Bullet is intact | Bullet is intact and harmless | Bullet is intact and harmless | Bullet is intact and harmless | Bullet is intact | Bullet is intact and harmless |
| Steel plate impact test | The warhead is crushed into powder, no generation of rebound | The warhead is crushed into powder, no generation of rebound | The warhead is crushed into powder, no generation of rebound | The warhead is crushed into powder, no generation of rebound | The warhead is crushed into powder without Rebound generation | The warhead is crushed into powder, no generation of rebound |
| 7075 thin aluminium alloy Board testing | Bullet breaking, aluminium alloy The sheet was depressed by 2mm, is not penetrated | Breaking bullet, aluminium alloy The sheet was depressed by 2mm and, is not penetrated | Breaking bullet, aluminium alloy The sheet was depressed by 2mm, is not penetrated | Breaking bullet, aluminium alloy The sheet was depressed by 3mm, is not penetrated | The warhead is broken, and the aluminum alloy is thin The plate was depressed by 2mm and, is not penetrated | Breaking bullet, aluminium alloy The sheet was depressed by 3mm, is not penetrated |
| 5-shot bullet hole Distance from target center Tolerance of deviation | 20mm | 19mm | 21mm | 18mm | 20mm | 19mm |
Table 1 is shown below:
| comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Metal bullet | |
| Soft landing test | Warhead is turned into and is stuck together Shape of | The bullet has no obvious deformation but has cracks Line(s) | The warhead is cracked into 3 pieces | Bullet is intact and harmless | Bullet is intact and harmless |
| Steel plate impact test | / | The bullet is broken and has a length of more than 2mm Formation of lumps | / | The warhead is broken and has a length of more than 3mm Granular object generation | The warhead being broken and having a length of more than 3mm Lump lead and copper scale production |
| 7075 aluminum alloy thin plate testing Test for | / | The bullet is broken and the aluminum alloy sheet is discharged Now 4mm concave, with breakdown Danger (S) | / | The bullet is broken and the aluminum alloy sheet is discharged Now 3mm depressed and not penetrated | Aluminum alloy sheetIs broken down |
| 5-shot bullet hole and target Tolerance of distance deviation of core | / | 18mm | / | 20mm | 19mm |
It can be seen from the above examples that the composite material bullet of the present invention does not burst in the bore with bore pressure of 250MPa, and does not tear itself under the centrifugal force generated by 3500 rpm rotation, and can be used in a pistol after directly replacing the metal bullet of the metal bullet; the distance deviation tolerance between the bullet hole and the target center shot for 5 times is compared with that of the metal bullet, and the difference value is within 2 mm; the trajectory of the composite material bullet can well simulate the trajectory of an original metal bullet and has good hit precision; the powder is crushed into powder when the steel plate is shot at a distance of 10 meters, so that the danger caused by the rebound of bullet fragments is avoided; the safety is higher when the confrontation shooting training is carried out under the condition that protective measures are taken; the bullet is broken when shooting the 7075 aluminum alloy sheet with the thickness of 5mm at a distance of 3 meters, and does not penetrate through the aluminum alloy sheet, which shows that the composite material bullet is suitable for carrying out law enforcement actions in a cabin and in a flammable and explosive oil and gas storage field (the 7075 aluminum alloy is aviation aluminum, and the oil and gas storage tank is generally a steel metal tank).
The addition amount of the curing agent in the comparative example 1 is too small, the hardness of the prepared bullet is too low, and the bullet is changed into a lump shape through a gun shooting test and cannot be directly used in a manufacturing gun.
The addition amount of the curing agent in comparative example 2 is too large, the hardness of the prepared bullet is too high, and the bullet has cracks and poor crack resistance although no obvious deformation is caused by a gun shooting test; when the bullet is broken, a block with the length of more than 2mm can be generated, and the risk of hurting people due to rebound of bullet fragments exists; when shooting a 7075 aluminum alloy sheet 5mm thick at a distance of 3 meters, the aluminum alloy sheet is obviously over-large sunken, so that the aluminum alloy sheet is in danger of being punctured.
The proportion of the added balance weight powder in the comparative example 3 is too high, the hardness of the prepared bullet is low, and the bullet is cracked into 3 pieces through the shooting test of a pistol and cannot be directly used in a standard firearm.
The counter weight powder particle adopted in the comparative example 4 has overlarge diameter, and through the shooting test of a hand gun, the bullet is broken, and the particle with the length of more than 3mm is generated, so that the bullet fragments rebound to hurt people.
Claims (10)
1. The composite warhead is characterized by comprising the following components in parts by weight:
100 parts of epoxy resin;
25-100 parts of a curing agent;
500 to 1500 portions of weight powder;
wherein, the weight ratio of the total weight of the epoxy resin and the curing agent to the weight powder is 1: (2.5 to 9);
the epoxy resin is selected from any one or more of bisphenol A type epoxy resin, bisphenol F type epoxy resin, polyphenol type glycidyl ether epoxy resin, aliphatic glycidyl ether epoxy resin, glycidyl ester type epoxy resin or glycidyl amine type epoxy resin; the viscosity of the epoxy resin at 25 ℃ is 1000 to 13000cps;
the curing agent is selected from any one or more of polyamide, ethylenediamine, hexamethylenediamine, diethylenetriamine, triethylene tetramine or diethylaminopropylamine; the viscosity of the curing agent at 25 ℃ is 250 to 1000cps;
the counterweight powder is selected from any one or more of metal powder or metal alloy powder;
the weight powder is 600 to 1000 meshes.
2. The composite warhead according to claim 1, wherein the viscosity of the mixture of the epoxy resin and the curing agent is 400 to 600cps at 25 ℃.
3. The composite warhead of claim 1, wherein said epoxy resin is selected from any one or more of bisphenol a type epoxy resins.
4. The composite warhead of claim 1, wherein said epoxy resin has a viscosity of 1000 to 8000cps at 25 ℃.
5. The composite warhead according to claim 1, wherein said curing agent has a viscosity of 250 to 600cps at 25 ℃.
6. The composite warhead of claim 1, wherein said metal powder is selected from any one or more of iron powder, copper powder, tin powder and tungsten powder; the metal alloy powder is selected from one or more of tungsten alloy powder, iron alloy powder, copper alloy powder, nickel alloy powder or cobalt alloy powder.
7. The method for manufacturing the composite warhead according to any one of claims 1 to 6, which is characterized by comprising the following steps of: according to the proportion, the epoxy resin and the curing agent are uniformly mixed, then the balance weight powder is added and uniformly mixed, the mixture is filled into a bullet mould, and after curing and forming, the composite material bullet is prepared.
8. The method for manufacturing the composite warhead according to claim 7, wherein the curing temperature is 25-35 ℃, and the curing time is not less than 48 hours; the warhead mould is an organic silicon soft rubber cavity warhead mould; the size of the organic silicon soft rubber cavity warhead die is 0.5-1.0% larger than that of the warhead prepared according to the actual requirement.
9. The method for manufacturing the composite warhead according to claim 8, wherein the size of the silicone soft rubber cavity warhead die is 0.7-0.8% larger than that of the warhead manufactured according to actual requirements.
10. The method of claim 7, wherein the bullet die is placed with its pointed end facing vertically downward during the solidification process.
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| CN115925498A (en) * | 2022-12-19 | 2023-04-07 | 湖北航天化学技术研究所 | Casting type energetic active material and preparation method and application thereof |
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| TW430736B (en) * | 2000-07-10 | 2001-04-21 | Combined Service Forces 205Th | Bullets for use in training exercises |
| CN1303445A (en) * | 1998-04-22 | 2001-07-11 | 辛特法尔公司 | Frangible metal bullets, ammunition and method of making such articles |
| CN107576227A (en) * | 2016-07-05 | 2018-01-12 | 黄建军 | One kind training frangible bullet and its manufacture method |
| CN108779972A (en) * | 2016-01-20 | 2018-11-09 | 辛特范尔公司 | The bullet of compacting mixture including copper powders |
| CN109016295A (en) * | 2018-08-23 | 2018-12-18 | 公安部物证鉴定中心 | A kind of high molecular material reproduction making method of shooting warhead |
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| US9528805B2 (en) * | 2014-04-07 | 2016-12-27 | Einstein Noodles, Llc | Providing spin to composite projectile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303445A (en) * | 1998-04-22 | 2001-07-11 | 辛特法尔公司 | Frangible metal bullets, ammunition and method of making such articles |
| TW430736B (en) * | 2000-07-10 | 2001-04-21 | Combined Service Forces 205Th | Bullets for use in training exercises |
| CN108779972A (en) * | 2016-01-20 | 2018-11-09 | 辛特范尔公司 | The bullet of compacting mixture including copper powders |
| CN107576227A (en) * | 2016-07-05 | 2018-01-12 | 黄建军 | One kind training frangible bullet and its manufacture method |
| CN109016295A (en) * | 2018-08-23 | 2018-12-18 | 公安部物证鉴定中心 | A kind of high molecular material reproduction making method of shooting warhead |
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