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A kind of aluminum alloy material and its application in preparing bullet case

An aluminum alloy material and aluminum alloy technology, applied in the field of bullets, can solve the problems of insufficient strength, deformation and high temperature resistance performance requirements, difficulty in achieving large plastic deformation, poor extrudability, etc., to alleviate the lack of copper resources and improve The effect of high strength and heat corrosion resistance

Active Publication Date: 2021-08-03
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the existing aluminum alloy materials are used to prepare bullet casings, they have poor extrudability, low elongation, and are difficult to achieve large plastic deformation, and their strength, deformation, and high temperature resistance requirements cannot meet the requirements. Therefore, aluminum alloy materials replace copper Or steel materials are used in the manufacture of aluminum alloy shells, and there are technical difficulties

Method used

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  • A kind of aluminum alloy material and its application in preparing bullet case
  • A kind of aluminum alloy material and its application in preparing bullet case
  • A kind of aluminum alloy material and its application in preparing bullet case

Examples

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preparation example Construction

[0057] The preparation method of the high-strength and tough aluminum alloy material comprises the following steps:

[0058] S1. Add aluminum to the smelting device, heat until the aluminum melts, add copper, manganese, zinc, titanium, chromium, rare earth, smelt, pass in protective gas, and refine;

[0059] S2. Spraying the melted material, heat treatment, and cooling to obtain the aluminum alloy material.

Embodiment 1

[0061] This example provides a method for preparing a high-strength and tough aluminum alloy material. The purity of all raw materials is above 99.9%. The composition content of the aluminum alloy material is shown in Table 1. The specific preparation steps are:

[0062] S1. Add aluminum with a purity of 99.99% to the smelting furnace, heat at 780°C until the aluminum is completely melted, then add copper, manganese, zinc, titanium, chromium, and rare earth in sequence, smelt for 45 minutes, feed anhydrous nitrogen, and refine for 25 minutes;

[0063] S2. Spray molding the molten material, heat treatment at 460° C. for 1.5 h, and cool to obtain the aluminum alloy material.

Embodiment 2

[0065] This example provides a method for preparing a high-strength and tough aluminum alloy material. The purity of all raw materials is above 99.9%. The composition content of the aluminum alloy material is shown in Table 1. The specific preparation steps are:

[0066] S1. Add aluminum with a purity of 99.99% to the smelting furnace, heat at 800°C until the aluminum is completely melted, then add copper, manganese, zinc, titanium, chromium, and rare earth in sequence, smelt for 60 minutes, and then pass in anhydrous nitrogen for 20 minutes of refining;

[0067] S2. Spray molding the molten material, heat treatment at 470° C. for 1.0 h, and cool to obtain the aluminum alloy material.

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Abstract

The invention relates to the technical field of bullets, in particular to an aluminum alloy material and its application in preparing bullet casings. The aluminum alloy material composition includes zinc 4.0~7.0wt.%, copper 1.0~2.0wt.%, manganese 0.3~0.7wt.%, rare earth 0.01~0.05wt.%, titanium 0~0.05wt.%, chromium 0~ 0.05wt.% and aluminum. The bullet casing made of the aluminum alloy material in the present invention has the remarkable advantages of high strength, toughness, ablation resistance, and good formability. With a chamber pressure of 400MPa and an instantaneous high temperature of 1000°C, the muzzle velocity of the warhead reaches 1200m / s, which effectively avoids the deformation, cracking and corrosion of the shell case. Compared with the steel shell case, the overall quality is reduced by more than 20%. Successfully replace the currently used copper and steel shells, reduce the weight of light weapons, and improve the mobility and combat capabilities of individual soldiers.

Description

technical field [0001] The invention relates to the technical field of bullets, more specifically, to an aluminum alloy material and its application in preparing bullet casings. Background technique [0002] The weight reduction of light weapons is the main way to improve the combat mobility of troops. Taking individual equipment as an example, the load of army soldiers in the Iraq war was as high as 35kg, exceeding the load standard by 10kg. On the Afghan battlefield, the average weight of an individual soldier is about 50kg. High-load marching weakens the mobility and combat capability of individual soldiers. As the core and key of individual equipment combat strikes, automated weapons reduce the weight of the system and maximize combat effectiveness. has become the ultimate goal of its development. The weight reduction of individual weapons and ammunition can effectively reduce the weight of soldiers and improve the mobility and combat capabilities of individual soldiers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10C22C1/02C22F1/053
CPCC22C1/026C22C21/10C22F1/053
Inventor 范才河范语楠
Owner HUNAN UNIV OF TECH
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