Advantages of aluminum alloy forging process

China's aluminum alloy forging technology originated in Europe. After nearly 20 years of development, many new technologies have emerged, such as direct forging and spinning composite technology, short-flow technology, pure direct forging technology and liquid forging technology.

In recent years, with the introduction of energy-saving and emission-reduction policies in automobiles, manufacturers have turned their attention to lightweight design and product research and development of new energy-saving and plastic technologies, supporting forming equipment has also put forward higher requirements, Promoted the development of aluminum alloy wheel forging process and forming equipment in China.

Aluminum alloy is one of the most widely used non-ferrous metal structural materials in industry, and is widely used in aviation, aerospace, machinery manufacturing, shipbuilding, chemical industry and other industries. Aluminum alloys can be forged in forging equipment such as forging hammers, mechanical presses, presses, upsetting machines, and reamers. Free forging, die forging, upsetting forging, rolling forging and reaming are possible.

When the aluminum alloy chassis parts of automobiles are forged, the aluminum alloy is usually heated to the forging temperature first, and then plastically deformed after the temperature is stabilized, and then solution treatment and aging treatment are carried out after the plastic deformation.

In order to improve the plasticity of the aluminum alloy forging process and reduce the deformation resistance, it is necessary to ensure that the aluminum alloy billet is in a single-phase state as much as possible. Therefore, in the forging process of aluminum alloy chassis parts of automobiles, it is usually necessary to heat many times to ensure that the aluminum alloy parts are at a suitable forging temperature.

In order to fully dissolve all phases of aluminum alloys, strengthen solid solutions, improve toughness and corrosion resistance, eliminate stress and softening, and promote continuous processing or formation, it is necessary to develop solutions to treat aluminum alloys, that is, heat-resistant aluminum alloys in partial solutions temperature, then let them warm so that all phases dissolve completely, forming a uniform solid solution, and then rapidly cool (i.e. quench) to fix the high temperature solid solution. A supersaturated solid solution is obtained in preparation for aging.

After quenching, the plasticity of aluminum alloy forgings after aging treatment decreases, and the strength and hardness increase significantly. In actual production, aluminum alloy forgings are usually heated to a certain temperature and kept for a certain period of time after quenching, that is, artificial aging.

When the aluminum alloy material is forged, the aluminum alloy parts that need to be deformed many times at the forging temperature usually need to be heated many times. At the same time, solution treatment and artificial aging are required after forging, so that aluminum alloy parts need to be heated many times during the forging process, which increases the actual production cycle and production cost.

The advantages of forging are light in weight, 20% lighter than cast wheels of the same size; it is formed by physical integrated forging, which has the characteristics of high density and high strength; the forging size is accurate and the processing volume is small; it can make more beautiful shapes, and the spokes can Very thin and beautiful.