To bend the stainless steel sheet, first you need to understand its characteristics, and then how to bend:

First, the stainless steel plate is bent and its characteristics:

1) Because the thermal conductivity is worse than ordinary low carbon steel, the elongation is low, resulting in a large deformation force;

2) 321 stainless steel sheet has a strong tendency to rebound compared with carbon steel during bending;

3) The stainless steel plate has a lower elongation than the carbon steel, and the bending angle R of the workpiece is larger than that of the carbon steel when bending, otherwise there is a possibility of cracking;

4) Due to the high hardness of SUS304 stainless steel plate, the cold work hardening effect is remarkable. Therefore, when selecting the bending tool, the tool steel with heat treatment hardness should be more than 60HRC, and the surface roughness should be one order of magnitude higher than that of carbon steel.

Second, measures and methods for stainless steel bending:

1. Under the unit size, the thicker the sheet, the greater the bending force required, and the margin of bending force should be larger when the bending equipment is selected as the thickness increases;

2. Under the unit size, the greater the tensile strength, the smaller the elongation, the greater the bending force required, and the larger the bending angle should be;

3. In the case of designing the thickness of the plate and the bending radius, according to experience, the unfolding size of a curved workpiece is the right angle and the two plate thicknesses are added and subtracted, which can fully meet the design accuracy requirements, and the expansion amount can be calculated according to the empirical formula. Simplify the calculation process and greatly improve production efficiency;

4. The greater the yield strength of the material, the greater the elastic recovery. In order to obtain the angle of 90 degrees of the bending member, the angle of the required pressing knife should be designed to be smaller. Compared with the same thickness of carbon steel, the stainless steel has a large bending angle. This point should pay special attention to the occurrence of crushing cracks and affect the strength of the workpiece.