Metal stamping is a process that uses a press machine and molds to deform or fracture stainless steel, iron, aluminum, copper and other sheet materials and special-shaped materials, to achieve a certain shape and size. Sometimes, metal stamping is also called sheet forming, but there is a slight difference. The so-called sheet forming refers to using sheet materials, thin-walled pipes, thin profiles, etc. as raw materials. The forming methods of plastic processing are collectively referred to as sheet forming.

Pressed parts are widely used in various fields such as aerospace, automobiles, ships, machinery, and chemical industries. Currently, they have gradually become a major component in the parts manufacturing industry. When manufacturing pressed parts, there may be situations like tearing or skewing. So, what should pressed part manufacturers pay attention to when choosing the material for pressed parts?

(1) Among the various types of steel plate specifications, regardless of whether it is a fixed-length plate or a coil plate, for the same material with the same thickness, the sales price varies depending on the width of the coil. Therefore, to reduce costs, efforts should be made in formulating the coil width. While ensuring the material utilization rate, try to select the coil width range without additional charges. For fixed-length plates, it is advisable to choose the appropriate size of the specification. After cutting from the steel mill, there is no need for a second cutting, which can reduce the cutting cost. For coil plates, try to select the coil material specifications and processes for opening and forming to reduce the workload of secondary cutting and improve work efficiency.

(2) The thickness of the sheet material has an error requirement. If the error falls within the acceptable range, the sheet material with the lower error should be selected first. (3) Determining the shape and size of the sheet material for the expansion of the metal stamping parts is the prerequisite for analyzing the deformation degree of the stamping parts, designing the processability and formulating the process procedures. If the shape of the sheet material is appropriate, not only can the uneven distribution of deformation along the sheet material be significantly improved, but also the number of mold trial and adjustment can be reduced, thereby shortening the production cycle and increasing the production efficiency. (4) When selecting materials for product design, avoid using high-grade materials to ensure that the product performance does not exceed the limit. At the same time, while meeting the requirements of the product and the process, try to choose the materials and thicknesses used in existing mass-produced vehicle models, forming a material platform. This will facilitate subsequent procurement and inventory management. For example, the key performance requirement of ordinary cold-rolled sheets is their formability. Therefore, under the condition of meeting product quality requirements, it is advisable to choose low-grade materials. As for the selection of material thickness, in addition to considering the strength and weight of the vehicle after forming, attention should also be paid to the popularization of the material thickness. Because special material thicknesses are difficult for suppliers to supply and the prices are also high.