Casting and hot spinning process of aluminum alloy wheel

Abstract

The invention discloses a casting and hot spinning process of an aluminum alloy wheel, which comprises a casting process and a spinning process. The casting and hot spinning process is characterized in that the content of Mg in aluminum liquid for casting accounts for 0.30-0.40 percent of total mass; a spinning blank is processed by adopting the casting process; a spoke is only cast by the blank; a rim is preformed and a material required for the rim is reserved by the preformed rim according to an isovolumetric deformation principle; the deformation ratio of the performing of the rim to the final forming is between 0.8 and 1; and then the performing part of the blank rim is spun and formed by adopting the spinning process. The invention uses traditional common cast equipment, so the cost of products is greatly reduced as comparison with a rotary swaging process, the rim formed by casting has strong shape change adaptability and relatively-complicated models can be finished; and meanwhile, casting defects such as the loosening and the shrinkage in the spinning and forming process disappear by spinning and the rim strength can be remarkably improved.

Description

technical field [0001] The invention relates to a casting hot spinning process in the manufacturing process of aluminum alloy wheels. Background technique [0002] The domestic production of aluminum alloy wheels mainly adopts the traditional casting process (referring to low-pressure casting and gravity casting), and a small amount of forging and spinning process is also used. The traditional casting process requires less investment in equipment and simple process. It is the most commonly used process. However, the wheels produced by the traditional casting process also have some limitations, such as poor mechanical properties of the wheel spokes and high scrap rate. The forging and spinning process of aluminum alloy wheels is a relatively advanced technology, which includes two processes of forging and spinning. The overall performance of the wheels produced by this process is greatly improved, and it also solves the partial mechanical properties of the wheels that cannot ...

AI Technical Summary

Problems solved by technology

The traditional casting process has less investment in equipment and simple process. It is the most commonly used process. However, the wheels produced by the traditional casting process also have some limitations, such as poor mechanical properties of the wheel spokes and high scrap rate.

The forging and spinning process of aluminum alloy wheels is a relatively advanced technology, which includes two processes of forging and spinning. The overall performance of the wheels produced by this process is greatly improved, and it also solves the local mechanical properties of the wheels that cannot be solved by traditional casting processes. Poor disadvantages, but the investment in the forging process equipment is large, the capital occupies more, the site is large, the process is more complicated, and the molds are also more, resulting in high production costs. In addition, due to the limitations of forging, the front shape of the forging wheel is simple. , it is impossible to make the ever-changing frontal shape in the casting wheel process, so the forged wheel has a single appearance and cannot be widely promoted in the market