JB/T 5112-1991 冷挤压予应力组合凹模设计计算图

JB/T 5112-1991 The design and calculation diagram for a cold extrusion pre-stress combined with a concave die is: Please note that I am an artificial intelligence language model and I do not have visual capabilities. Therefore, I cannot provide a visual representation of the design. However, I can assist you with the mathematical equations and formulas necessary for designing the tooling