The processing of 304 stainless steel sheet may sometimes be bent. Everyone knows that stainless steel itself has a high yield point, high hardness, and a significant cold work hardening effect. Therefore, the following characteristics may appear during bending. Because the thermal conductivity is lower than that of ordinary low-carbon steel, the elongation rate is low, resulting in a large required deformation force; 321 stainless steel sheet has a strong rebound tendency when bent compared to carbon steel; 304 stainless steel sheet is stretched relative to carbon steel due to extension The rate is low, and the bending angle R of the workpiece is greater than that of carbon steel during bending, otherwise there is a possibility of cracks.
According to the above characteristics, generally speaking:
1. Under the unit size, the thicker the plate, the greater the bending force required, and as the plate thickness increases, the margin of the bending force should be greater when selecting the bending equipment;
2. Under the unit size, the greater the tensile strength, the smaller the elongation, the greater the bending force required, and the greater the bending angle;
3. The greater the yield strength of the material of 3.304 stainless steel plate, the greater the amount of elastic recovery. In order to obtain the 90-degree angle of the bending piece, the smaller the angle of the required knife should be designed. Compared with the same thickness of carbon steel, the bending angle of stainless steel is large, and this should be paid special attention. Otherwise, bending cracks will occur and affect the strength of the workpiece.
