Drawability Of Sheet Metal. The difference between these types of stamping procedures is based on the mechanics of the forming process. Value of strain hardening exponent n. Deep drawability is expressed in terms of limiting drawing ratio ldr which is a ratio of the diameter of the blank before drawing to that of.
The way to measure the extent of drawing is first generalized from the drawing ratio to the draw in at the completion of the cup. Value of anisotropy ratio which in turn depends upon composition as well as on processing parameters.
Value of strain hardening exponent n.
Value of strain hardening exponent n. Necking is localized thinning of the metal that is greater than the thinning of the surrounding metal. Rolling extrusion forging rollforming stamping. The defects have to be considered separately for the fundamental sheet metal forming procedures of deep drawing and stretching.
