Today, we mainly introduce the aluminum alloy forging technology, which mainly includes aluminum alloy free forging technology, aluminum alloy die forging technology, aluminum alloy forging heat treatment, common aluminum alloy forging equipment, aluminum alloy forging new technology and information technology. Forging will be used in the process of aluminum alloy processing, so what is aluminum alloy forging?

Forging of all-aluminum light alloy aluminum alloy is to make use of the plasticity of the material and produce plastic deformation with the help of external force to obtain forgings with required shape, size and certain organizational properties. Advantages: The forging is compact and uniform in structure, and its performance is higher than that of die casting, cutting and welding parts. Disadvantages: large deformation force is required. What we need to pay attention to is forging technology and classification, which are mainly divided into warm forging technology and cold forging technology.

Brief introduction of warm forging: warm forging is a plastic forming process with less chips and no chips developed on the basis of cold forging. The temperature is usually above room temperature and below recrystallization temperature. Black metal: 200~850C; Non-ferrous metals: room temperature ~350 C

The characteristics of warm forging: it combines the advantages of cold forging and hot forging, but also reduces their respective shortcomings. Compared with cold forging

1, the warm forging blank has small deformation force and easy forming;

2, large deformation can reduce the number of working procedures, die cost and press tonnage, and the die life is longer than that of cold forging;

3. Pre-softening of blank and annealing between processes are not needed, which makes continuous production easier than cold forging.

Introduction of cold forging: Cold forging technology belongs to the bulk plastic forming of metals at room temperature. There are two main forming methods: cold extrusion and cold heading extrusion. For example, screws and rivets are cold heading extrusion. Difference: the maximum size of cold extrusion parts is basically the same as the outer diameter of blank; The maximum size of upsetting or upsetting workpiece is larger than the outer diameter of blank.

The characteristics of cold forging are material saving, high efficiency and high quality of parts, including high dimensional accuracy and low surface roughness, which can reduce or eliminate machining and grinding processes and sometimes heat treatment.

Material structure of aluminum alloy forged by aluminum alloy

Aluminum alloy has low density, but high strength, close to or superior to high-quality steel, good plasticity, excellent electrical conductivity, thermal conductivity and corrosion resistance, and is widely used in industry, and its usage is second only to steel. Do you know the material structure of aluminum alloy with so many advantages? today

The density of pure aluminum is low (ρ=2.7g/cm3), which is about 1/3 of that of iron, and its melting point is low (660℃). Because of its face-centered cubic structure, aluminum has high plasticity (δ: 32-40%, ψ: 70-90%), is easy to process, and can be made into various profiles and plates, and is corrosion-resistant. However, the strength of pure aluminum is very low, and the σb value of annealed state is about 8kgf/mm2, so it is not suitable for structural data. Jiahang aluminum alloy forging shows that after long-term consumption theory and scientific experiments, people gradually strengthen aluminum by taking part in alloying elements and using heat treatment, and a series of aluminum alloys have been obtained. The alloy with certain elements can maintain the advantages of pure aluminum, such as light weight, but also have high strength, and σb values can reach 24 ~ 60 kgf/mm2 respectively. In this way, its "specific strength" (the ratio of strength to specific gravity σb/ρ) is better than many alloy steels, and it becomes an ideal structural material, which is widely used in machinery manufacturing, transportation machinery, power machinery and aviation industry, etc. The fuselage, skin and compressor of aircraft are often made of aluminum alloy to reduce their own weight. Using aluminum alloy instead of welding steel plate data can reduce the structural weight by more than 50%.

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