Stretching parts are metal stamping parts made through stretching technology, with various shapes, specifications, and types. This process mainly involves transforming flat billets or hollow parts of a certain shape into various open hollow parts through stretching molds. Through this method, thin-walled parts with cylindrical, stepped, box, spherical, conical, and other complex shapes can be manufactured.
During the stretching process, the position of the deformation zone, the nature of deformation, the distribution of deformation, and the stress state and distribution law of various parts of the billet will undergo significant changes. These changes are influenced by various factors, such as the shape, size, material properties of the billet, and the design of the stretching mold. Therefore, in the stretching process, it is necessary to determine appropriate process parameters, number and sequence of processes, as well as corresponding mold design principles and methods based on specific product requirements and material characteristics.
Stretching parts play an important role in the stamping production of various industrial sectors such as automobiles, tractors, electrical appliances, instruments, electronics, aerospace, and daily necessities. They usually have the characteristics of simple and symmetrical appearance, which makes them easier to form with fewer deep drawing times. At the same time, the fillet radius of the stretched part should be kept as small as possible without increasing the process procedure, in order to reduce the number of deep drawing times and workload, reduce the number of molds, avoid waste and increase costs.
Overall, stretched parts are a type of metal stamping parts widely used in various fields, with diverse shapes, specifications, and types. The manufacturing process requires precise process control and mold design.
