Designing A Forging Die for Hanger Bolt using CAD

The life of a forging die and the amount of flash produced in forging are the main issues of concern in all forging operations together with material wastage, overall cost and post process trimming costs. While proper control of the flash is essential to ensure die filling, the service life of hot forging die depends mainly on thermal, mechanical and combined stresses. Geometrical design of the pre-form has significant relationship with the forging load and flash amount in forging complex parts. This paper deals with flash reduction of forging die for a Hanger Bolt, commonly used in lifts, by using flash less forging approach. It is revealed that the preform can be accurately designed to control volume distribution, complete filling of the cavity and to avoid overloading the dies. Application of CREO software has been demonstrated in designing the die with the objective of minimizing the flash.