Wrinkles and cracks in the processing of deep drawing parts

Wrinkles and cracks in the processing of deep-drawn stampings, including the wrinkles in the flange deformation zone and the cracks of the cylinder wall, what are the factors that occur? Let’s take a look below; the main cause of wrinkling in the flange deformation zone in the processing of deep drawing parts is the size of the tangential compressive stress σ3. The ability to resist instability, the larger the width of the flange, the thinner the thickness, the smaller the elastic modulus and hardening modulus of the material, and the smaller the ability to resist instability; One aspect is the tensile stress in the force transmission area of u200bu200bthe cylinder wall; the other is the tensile strength of the force transmission area of u200bu200bthe cylinder wall; when the tensile stress of the cylinder wall exceeds the tensile strength of the material of the cylinder wall, the drawn part will be rounded at the bottom The tangent to the cylinder wall-the 'dangerous section' is cracked; how to prevent it from breaking? Mainly by improving the mechanical properties of the material to increase the tensile strength of the cylinder wall; by correctly formulating the drawing process and designing the die, reducing the tensile stress on the cylinder wall; Recommended article: Working principle in the process of processing stampings Previous post: Metal stamping Precautions when designing parts