1. forging. Under the action of pressure equipment and tools (dies), the billet and ingot are partially or completely plastically deformed to obtain a certain geometric size, shape and quality. Forging includes free forging and model forging.

2, sheet metal stamping. The processing method of the required product is to separate or form the pressure of the metal plate between the dies by using the blanking force or static pressure.

3, rolling. Using rolling force (friction force), the metal is deformed in the gap between rotating rollers to obtain the required products. The raw materials used in rolling production are mainly steel ingots, including section steel, steel plate and seamless steel pipe.

4, squeeze. Using strong pressure, the metal blank is extruded from the extrusion die hole to obtain the required product. Extruded products include various profiles with complex shapes and inner and outer rings of bearings.

5, pull. A processing method for drawing a metal blank from a hole of a drawing die by using a pulling force and obtaining a required product. Drawing products include wires, thin-walled tubes and various profiles with special geometric shapes.

Development trend of aluminum alloy forgings

1, improve the internal quality of forgings, mainly to improve its mechanical properties (strength, plasticity, toughness, fatigue strength) and reliability. This requires better application of metal plastic deformation theory; Vacuum treatment of steel, vacuum smelting steel and other materials with good internal quality; Correct pre-forging heating and forging heat treatment; More stringent and extensive nondestructive testing of forgings (see NDT).

2. Further develop precision forging and precision stamping technology. Less cutting is an important measure and direction to improve the utilization rate of materials, improve labor productivity and reduce energy consumption in machinery industry. The development of forging blank will be beneficial to precision forging. Expansion and application of precision stamping.

3. Develop forging equipment and production line with high productivity and automation. Under the production, the labor productivity is greatly improved and the forging cost is reduced.

4. Develop flexible forging forming system (application group technology, rapid die replacement, etc.), so that multi-variety and small-batch forging production can make use of efficient and highly automated forging equipment or production line, and make its productivity and economy close to the level of mass production.

5. Develop new materials such as powder metallurgy materials (especially double-layer metal powder). Liquid metal. Forging processing methods of fiber reinforced plastics and other composite materials, and developing superplastic forming. High energy forming. Internal high-pressure forming and other technologies. Classified drying efficiency: the classified drying efficiency calibrated according to the particle size or particle size range of dust is called classified efficiency, which refers to the ratio of the amount of dust captured in a certain particle size range to the total amount of imported dust.

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