Equalizing draw
17.1
A leveling train58 is understood to mean an ironing train for the purpose of homogenizing the sheet thickness profile of the frame after deep drawing. This allows a higher natural strain to be achieved for the subsequent ironing process.
A leveling train can also be used to improve the tolerance class of a drawing blank from, for example, IT13 to IT9.
Fig. 1
Deep draw, equalizing draw and three more ironing draws
58
Kerspe, Jobst-H. / Abstreckgleitziehen von nichtrostenden austenitischen Stählen / Springer-Verlag / Berlin / 1980 / …