Stampings with different strengths, from ordinary plates to high-strength plates, have different yield strengths. The higher the yield strength of the plate, the more likely it is to rebound.
During the forming process, the thickness of the sheet has a great influence on the bending performance. With the increase of the thickness of the sheet, the spring back phenomenon will gradually decrease. This is because with the increase of the thickness of the sheet, the materials involved in plastic deformation will increase, and then the elastic recovery deformation will also increase. Therefore, the springback will decrease. Metal stamping shrapnel.
The spring back of parts with different shapes varies greatly. Parts with complex shapes are generally subject to one-step shaping to prevent spring back when forming is not in place. Some parts with special shapes are more likely to spring back, such as U-shaped parts. In the analysis of forming process, spring back compensation should be considered. Hardware stamping mold base.
The blank holder force stamping process is an important technological measure. By continuously optimizing the blank holder force, the material flow direction can be adjusted and the internal stress distribution of the material can be improved. The increase of blank holder force can make the part drawing more full, especially at the side wall and R angle of the part. If the forming is sufficient, the internal and external stress difference will be reduced, thus reducing the spring back.
Further reading: Cracking of metal stamping parts
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Metal stamping parts are pieces of metal that are shaped by applying an intense force through a die. Metal blanks are inserted into dies and then pressed to create specific shapes. Commonly stamped items include car body panels, engine components, and household appliances.
No matter in terms of operation technology or safety, the metal stamping process should meet the corresponding requirements, starting from its technical measures. You should know that the so-called metal stamping is a process of deforming or breaking iron, aluminum, copper and other plates and dissimilar materials to a certain shape and size by using a punch and a mold.
According to the total deformation properties of materials, hardware processing processes are divided into two categories and five types of deformation in the stamping process.