In general, a forging product is produced through buster, blocker and finisher processes. The blocker, a transient shape between the buster and the finisher, is to ease the metal flow in the finisher dies. In general, as the finisher shape becomes com...
In general, a forging product is produced through buster, blocker and finisher processes. The blocker, a transient shape between the buster and the finisher, is to ease the metal flow in the finisher dies. In general, as the finisher shape becomes complicated, the blocker design becomes quite difficult.
In the present study, an expert system is developed for the blocker die design of axisymmetric hot steel forging. It is a rule based system written in Fortran and AutoLISP, operating on a personal computer. In this paper, the major rules considered in the system are summarized and several blockers designed by the system are discussed with results of rigid viscoplastic finite element analysis.