Sheet metal parts are widely used in modern industry, commonly used materials include steel, stainless steel, aluminum, etc. In reality, when producing sheet metal parts, the surface requirements of the parts are becoming higher and higher. It is well known that the surface quality of sheet metal parts is very important, which affects the use performance and the overall product quality. But sometimes the sheet metal parts after stamping are found to have the phenomenon of wrinkle, then what is the reason for this phenomenon?
In actual production, the wrinkle of sheet metal parts after stamping is mostly caused by surface tension reduction. The decreasing surface tension reduces the sheet sheet compression, so that the sheet shape appears upward wrinkle phenomenon. In addition, the homogeneous distribution of sheet material will also lead to the wrinkle of sheet metal parts. If there is poor homogeneity of sheet material, it will cause the drawing force to be unbalanced, and finally make the sheet metal parts deform.
In order to solve the wrinkle problem of sheet metal parts, we should investigate the cause of wrinkle from the following aspects.
Firstly, increase the amount of drawing. Changing the amount of drawing can directly increase the surface tension of sheet parts, and the surface tension can be increased by increasing the amount of drawing. In general, after the amount of drawing is increased, the surface wrinkle level of the parts can be greatly reduced.
Secondly, pay attention to the homogeneity of the material. As mentioned above, homogeneous material can ensure uniform stretching force and reduce the risk of forming wrinkle defects.
Finally, adjust the temperature properly. If the temperature at the time of stamping is too high, it will reduce the surface tension of the sheet and lead to wrinkle of the sheet parts. Therefore, adjusting the temperature appropriately is also very important to reduce the wrinkle phenomenon.
In short, the wrinkle of sheet metal parts after stamping can be controlled by optimizing the above aspects. At the same time, in the actual production of sheet metal parts, the annealing process will greatly reduce the brittleness of the parts and reduce the risk of forming the defect. In addition, when the stamping process is designed, pay attention to the reasonable selection of die structure to avoid forming wrinkle phenomenon.
