How is the blank flat diameter calculated for a torispherical head?
The blank flat diameter is calculated from the crown radius (R), knuckle radius (r), straight flange (h1) and wall thickness using standard empirical forming formulas.
Calculate required blank diameter, surface area and formed volume for torispherical (Klöpper / Korbbogen) and ellipsoidal heads per ASME VIII & DIN 28011.
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The blank flat diameter is calculated from the crown radius (R), knuckle radius (r), straight flange (h1) and wall thickness using standard empirical forming formulas.