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Lead-free environment friendly type high density bullet and preparation method thereof

A high-density, environmentally friendly technology, used in ammunition, warheads, offensive equipment, etc., can solve the problems of low projectile strength, damage to the barrel, etc., to avoid direct friction, avoid pollution, and improve the effect of coating speed.

Active Publication Date: 2015-05-06
XIAMEN HONGLU TUNGSTEN MOLYBDENUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, high-density composite materials prepared solely with tungsten as a filler can obtain higher elastic body density, but lower elastic body strength.
At the same time, due to the high hardness of tungsten, the tungsten particles exposed on the surface of the bullet will directly rub against the rifling of the barrel during the firing process, damaging the barrel

Method used

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  • Lead-free environment friendly type high density bullet and preparation method thereof
  • Lead-free environment friendly type high density bullet and preparation method thereof
  • Lead-free environment friendly type high density bullet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The formulation of the lead-free environment-friendly high-density bullet base material is:

[0042]

[0043] The preparation method of the lead-free environment-friendly high-density bullet comprises the steps of:

[0044] (1) Blending of ingredients: Weigh the quality of various raw materials according to the formula, and mix them evenly in a high-speed mixer to obtain a mixture.

[0045] (2) Extrusion granulation: Put the mixture into a twin-screw extruder, extrude and pelletize at 180°C to obtain injection feed granules.

[0046] (3) Injection molding: The injection feed particles are injected and molded through an injection machine at 200°C to obtain lead-free, environmentally friendly, high-density blanks.

[0047] (4) Preform shaping: Grinding the obtained lead-free environment-friendly high-density preform to remove the injection gate to obtain a preformed preform.

[0048] (5) Copper plating on the spring blank: the surface of the plastic blank is firstly ...

Embodiment 2

[0052] The formulation of the lead-free environment-friendly high-density bullet base material is:

[0053]

[0054]

[0055] The preparation method of the lead-free environment-friendly high-density bullet comprises the steps of:

[0056] (1) Blending of ingredients: Weigh the quality of various raw materials according to the formula, and mix them evenly in a high-speed mixer to obtain a mixture.

[0057] (2) Extrusion granulation: put the mixture into a twin-screw extruder, extrude and pelletize at 260°C to obtain injection feed granules.

[0058] (3) Injection molding: The injection feed particles are injected and molded through an injection machine at 290°C to obtain lead-free, environmentally friendly, high-density blanks.

[0059] (4) Preform shaping: Grinding the obtained lead-free environment-friendly high-density preform to remove the injection gate to obtain a preformed preform.

[0060] (5) Copper plating on the spring blank: firstly carry out chemical copper ...

Embodiment 3

[0065] The formulation of the lead-free environment-friendly high-density bullet base material is:

[0066]

[0067] The preparation method of the lead-free environment-friendly high-density bullet comprises the steps of:

[0068] (1) Blending of ingredients: Weigh the quality of various raw materials according to the formula, and mix them evenly in a high-speed mixer to obtain a mixture.

[0069] (2) Extrusion granulation: Put the mixture into a twin-screw extruder, extrude and pelletize at 180°C to obtain injection feed granules.

[0070] (3) Injection molding: The injection feed particles are injected and molded through an injection machine at 200°C to obtain lead-free, environmentally friendly, high-density blanks.

[0071] (4) Preform shaping: Grinding the obtained lead-free environment-friendly high-density preform to remove the injection gate to obtain a preformed preform.

[0072] (5) Copper plating on the spring blank: firstly carry out chemical copper plating on...

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Abstract

The invention relates to a lead-free environment friendly type high density bullet and a preparation method of the environment friendly type high density bullet. The bullet materials comprise, by weight, 100 parts of high-molecular polymers, 500-2000 parts of tungsten powder, 0.05-100 parts of tungsten fiber, 0.05-200 parts of iron powder, 0.5-5 parts of compatilizer, and 0.05-1 part of antioxidants. The preparation method comprises the steps of (1) ingredient mixing, (2) extruding and granulating, (3) injecting and forming, (4) bullet billet sizing, and (5) bullet billet copper plating, and a final product is obtained. The lead-free environment friendly type high density bullet has no lead element, the pollution to environment and the harm to human, animals and plants of traditional bullets with lead are effectively avoided.

Description

technical field [0001] The invention relates to a lead-free environment-friendly high-density bullet and a preparation method thereof, belonging to the field of design and preparation of advanced functional composite material devices. Background technique [0002] Since the birth of the bullet, its shape, structure and ammunition composition have undergone great changes, but lead metal as its core material has never changed, because lead metal has 11.34g / cm 3 The high density and good ductility can effectively improve the accuracy and lethality of shooting. However, lead is biologically toxic, and lead dispersed in the natural environment has serious toxic effects on animal nervous system, hematopoietic system, urinary system, cardiovascular system, reproductive system, and skeletal system. According to the RoHS directive, WEEE directive and REACH regulations, lead is listed as one of the key restricted use and highly concerned hazardous substances. [0003] In the militar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42B30/02C22C27/04B22F3/22C23C28/02
Inventor 赵国璋于洋彭福生赖亚洲庄志刚邓华清叶道兴
Owner XIAMEN HONGLU TUNGSTEN MOLYBDENUM IND CO LTD
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