What are the Phenomena of Automobile Stamping Parts in the Production Process?

2019-07-05 15:25:02

Automobile stamping parts are obtained under the action of stamping force, so there will be certain deformation, size, shape and other aspects of the corresponding deformation. For stamping parts, sheet metal, die and equipment are the three indispensable elements in the forming process, which play a vital role in the forming quality of stamping parts.

From the current metal workpiece, a large part of the finished products are stamped and pressed, such as car body, radiator, container shell, motor, electrical appliances, iron core silicon steel sheet, etc. In the process, as long as the compound die is adopted, the multi-channel stamping operation can be accomplished on a press, which greatly improves the production efficiency of stamping parts.

Stamping parts have the characteristics of thin, uniform, light and strong, because they can be used to manufacture workpieces with reinforcing ribs, ribs, winding or flanging to improve their rigidity, while ensuring the quality of finished products and high qualified rate.

Automobile stamping parts in the production process will have adverse phenomena, but these are inevitable, but after more times, the quality of the whole workpiece will be reduced. Especially in stretching, flange wrinkling and sidewall wrinkling occur due to the effect of contraction deformation. This problem is relatively easy to solve. As long as the tension stress in the moving plate is selected, the wrinkles can be eliminated by increasing the stretching rib or reducing the radius of the fillet of the die. But what if the deformation of stamping parts is too large and there is splitting?

First of all, blanking method can be used to ensure the quality of the marginal section of the blank; then the marginal state of the blank can be improved. Generally, the appropriate material standard is chosen to increase to determine the standard of the concave flanging blank, and the stamping skills are adjusted to avoid splitting. Secondly, to ensure that the punch and die vacancies are uniform, so that the material into the die resistance is uniform, which is also beneficial to reduce splitting.

If the splitting is caused by tension, it can be improved by enlarging the fillet radius of the punch and concave die, adjusting the blank holder force appropriately, and reducing the deformation resistance of the flange deformation zone, so as to fully guarantee the ideal forming quality of automobile stamping parts.