Aluminum alloy plate for bullet case and production method thereof

Abstract

The invention discloses an aluminium alloy plate for a cartridge case, and a production method thereof. The aluminium alloy plate comprises the chemical elements: Si, Fe, Cu, Mn, Mg, Cr, Zn, Ti and the balance Al; and the aluminium alloy plate containing the above elements is prepared through the procedures of smelting, casting, soaking treatment, face milling, hot rolling, annealing and the like.According to the aluminium alloy plate and the production method, the characteristics of low strength and high plasticity of aluminium alloy before solid solution heat treatment are utilized effectively; through high precision equipment and the rational processing technology of the aluminium alloy plate, the composition segregation of an aluminium alloy ingot is eliminated effectively, and the internal stress of the ingot is reduced; the chemical components are uniform; the produced aluminium alloy plate for an aluminium cartridge case is high in plasticity, strength and hardness, and the adverse effects of hydrogen and residues in metal materials are reduced and eliminated; and the high performance requirements for the cartridge case are met completely.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloys, and in particular relates to an aluminum alloy plate for bullet casings and a production method thereof. [0002] technical background [0003] Aluminum alloy has the advantages of light weight, high specific strength, easy processing and forming, good corrosion resistance, good electrical and thermal conductivity, recyclable reuse, and surface treatment. It is widely used in aerospace, transportation, construction, machinery manufacturing, electronics, etc. Electricity, household appliances and other industries. Due to the advantages of aluminum alloys, aluminum alloys are more and more used in the military industry, and the lightweight of military, police or exercise weapons plays a very important role in practical applications. [0004] Because in the lightweight of the weapon, the shell case, which accounts for half the weight of the ammunition, can play a big role. Therefore, the pr...

AI Technical Summary

Problems solved by technology

The aluminum alloys commonly used to prepare aluminum alloy shells include 3000 series, 6000 series, 7000 series and other aluminum alloys. The 3000 series mainly represents alloys such as 3003 and 3004. Although these alloys have good elongation and excellent stamping performance, they cannot be subjected to solution heat treatment. The resulting low tensile strength and hardness cannot meet the technical requirements required by the cartridge case

Although the 7000 series can be heat-treated and has high strength after heat treatment, it has defects such as poor plasticity and high hardness, and cannot be used as a shell material well.

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