What are the advantages of stainless steel sieve plates after stamping

Nowadays, screen plates are a very commonly used product. Their good craftsmanship and quality make people inseparable from them. Among them, there are many screen plate stamping forming process methods used in production practice, with various forms and names, but the essence is the same. Stamping has the following very prominent characteristics.

(1) The pressure per unit area perpendicular to the plate surface is not large enough to cause plastic deformation of the plate in the plate surface direction. Since the pressure per unit area perpendicular to the plate surface is much smaller than the internal stress in the plate surface direction, most of the screen plate stamping deformation can be approximately treated as a plane stress state, which greatly simplifies the analysis of deformation mechanics and the calculation of process parameters.

(2) Since the relative thickness of the plate blank used for stamping is very small and its anti-instability ability under compressive stress is also poor, it is difficult to successfully complete the stamping process in a free state without an anti-instability device (such as a pressure edge factor, etc.). Therefore, there are more elongation stamping processes dominated by tensile stress than compression stamping processes dominated by compressive stress.

(3) When the screen plate is formed by stamping, the value of the internal stress of the blank is equal to or less than the yield stress of the material. In this regard, stamping and bulk forming are very different. Therefore, the influence of the hydrostatic pressure component of the deformation zone on the forming limit and deformation resistance in stamping has lost its importance in bulk forming. In some cases, it can even be completely ignored. Even if it is necessary to consider it, the treatment method is different.

(4) When the screen plate is formed by stamping, the constraint of the die on the blank is relatively light. Bulk forming (such as die forging, etc.) is achieved by full contact of the blank with the cavity of the same shape as the workpiece. In stamping, in most cases, the blank has a certain degree of freedom. Often only one surface is in contact with the die, and sometimes there are even deformation parts on both sides of the plate that are not in contact with the die. In this case, the deformation of this part of the blank is controlled by the external force exerted by the mold on its adjacent parts. For example, the curling forming of the suspended part at the end of the tube blank during the forming of spherical and conical parts belongs to this situation.