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Manufacturing method of aluminum alloy cartridge shell and cartridge shell

A manufacturing method and technology of aluminum alloy, applied in the direction of cartridge ammunition, ammunition, anodizing, etc., can solve the problems of strength, deformation, high temperature resistance that cannot meet the requirements, difficult to achieve large plastic deformation, poor extrudability, etc. Achieving the effect of long finish retention time, excellent surface quality and fast cooling rate

Inactive Publication Date: 2019-01-08
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional production of bullet casings mostly adopts cold stamping and cold forging (cold extrusion). However, the aluminum alloy bullet casings prepared by the existing technology have problems such as poor extrudability and low elongation, and it is difficult to achieve large plastic deformation. Its strength, The amount of deformation and high temperature resistance cannot meet the requirements. Therefore, there are still major technical problems in the application of aluminum alloy materials to replace copper or steel materials in the manufacture of aluminum alloy shells.

Method used

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  • Manufacturing method of aluminum alloy cartridge shell and cartridge shell
  • Manufacturing method of aluminum alloy cartridge shell and cartridge shell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] This embodiment provides a method for manufacturing an aluminum alloy shell, which specifically includes the following steps:

[0058] S1. Prepare aluminum alloy raw materials and melt aluminum alloy solution;

[0059] The aluminum alloy raw material in this embodiment is composed of the following alloy components in mass percentage: copper 4.0wt.%, magnesium 2.2wt.%, manganese 0.6wt.%, titanium 0.02wt.%, chromium 0.02wt.%, zirconium 0.01wt. .%, impurity iron, silicon content is 0.008wt.%, Al balance;

[0060] The preparation method of the above-mentioned aluminum alloy raw material is as follows: put aluminum with a purity of 99.99% into a melting furnace, heat it at 780°C until the aluminum is completely melted, then add copper, manganese, titanium, chromium, zirconium, and magnesium in sequence, melt for 45 minutes, and pass anhydrous nitrogen , refining for 25 minutes;

[0061] S2. Prepare the aluminum alloy shell blank: pour the aluminum alloy solution in step S1...

Embodiment 2

[0080] This embodiment provides a method for manufacturing an aluminum alloy shell, referring to the operation steps of Embodiment 1, the difference is that in step S1, the aluminum alloy raw material is composed of the following alloy components in mass percentages: copper 3.0wt.%, magnesium 3.0wt.% , manganese 1.0wt.%, titanium 0.03wt.%, chromium 0.03wt.%, zirconium 0.03wt.%, impurity iron, silicon content is 0.01wt.%, and the balance is Al element; In step S2, atomization injection pressure is 2.5MPa; in step S3, the stamping speed is 60mm / min, and the mixing ratio of graphite powder and cylinder oil is 3:5; in step S4, the anodic oxidation process parameters are: voltage 30V, current density 2.5A / dm 2 , anodizing temperature is 0 ℃, time is 2h.

Embodiment 3

[0082] This embodiment provides a method for manufacturing an aluminum alloy shell, referring to the operation steps of Embodiment 1, the difference is that in step S1, the aluminum alloy raw material is composed of the following alloy components in mass percentages: copper 5.0wt.%, magnesium 2.0wt.% , manganese 0.5wt.%, titanium 0.01wt.%, chromium 0.01wt.%, zirconium 0.03wt.%, impurity iron, silicon content are 0.009wt.%, and the balance is Al element; In step S2, the atomization injection pressure is 0.5MPa; in step S3, the stamping speed is 1mm / min, and the mixing ratio of graphite powder and cylinder oil is 5:7; in step S4, the anodic oxidation process parameters are: voltage 5V, current density 2A / dm 2 , the anodizing temperature is 5°C, and the time is 2h.

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Abstract

The invention provides an aluminum alloy cartridge shell and a manufacturing method of the aluminum alloy cartridge shell. The manufacturing method of the aluminum alloy cartridge shell includes the following steps that S1, an aluminum alloy raw material is prepared, and an aluminum alloy solution is smelted; S2, an aluminum alloy cartridge shell blank is prepared; S3, forming treatment is conducted; and S4, surface treatment is conducted. According to the structural features and the use environments of the cartridge shell, alloy components are designed scientifically and reasonably, the aluminum alloy cartridge shell is manufactured after a 3D jet molding fast solidifying technology, multi-pass die stamping forming treatment and hard anodizing surface treatment, the whole set of technological process is complete, operability is high, and the purpose of replacing traditional copper and steel cartridge shells can be achieved.

Description

technical field [0001] The invention belongs to the technical field of ammunition products, and more specifically relates to an aluminum alloy bullet casing and a manufacturing method thereof. 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. [0003] Traditional bullet casings are made of copper and steel, which are heavy and inconvenient to carry. Aluminum alloy materials have become the direction ...

Claims

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Application Information

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IPC IPC(8): B22F3/115B23P15/22C22C21/16C25D11/04F42B5/28
CPCB22F3/115B23P15/22C22C21/16C25D11/04F42B5/28
Inventor 范才河范语楠
Owner HUNAN UNIV OF TECH
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