When the stamping parts processing factory processes the deep drawn stamping parts, the problems that are easy to appear are: the wrinkling of the flange deformation area and the pulling of the cylinder wall force transfer area;
What is wrinkling in the flange area?
It is the bending caused by the loss of stability of the sheet due to tangential compressive stress;
What is cracking in the power transmission area?
It is caused by the tensile stress exceeding the tensile strength of the sheet material fracture;
The wrinkling of the flange deformation area is mainly due to;
1. The size of the tangential compressive stress σ3, the larger the more likely to be unstable wrinkling;
2. The ability of the sheet material in the flange area to resist instability;
The larger the flange width and the thinner the thickness, the smaller the elastic modulus and hardening modulus of the material, and the smaller the resistance to instability;
The cracking of the cylinder wall mainly depends on the following two;
1. Anti-stress in the cylinder wall force transfer area;
2. The tensile strength of the cylinder wall force transfer area;
When the tensile stress of the cylinder wall exceeds the tensile strength of the cylinder wall material, the deep-drawn stamping part will break at the corner of the bottom where the corner is tangent to the cylinder wall-“dangerous section”;
