METHOD OF PRODUCING HOLLOW FORGINGS

摘要

FIELD: process engineering.SUBSTANCE: invention relates to stamping and may be used in whatever industry at single- and double-action presses. Hollow part is formed by drawing sheet mould with provision of clearance between die top plate and billet by pressing die top plate working surface to spacer. Note here that said clearance is corrected by varying spacer thickness subject to billet thickness.EFFECT: ruled out necking and corrugation.