Die forging stress determination: A dimensional analysis approach

The stress provided by the forging press for manufacturing closed die forgi ngs (forging stress) is evaluated through dimensional analysis. Five dimens ionless groups, from the process variables, are proposed in order to simpli fy, this forging stress determination. These groups are experimentally rela ted. This relation is compared with the forging stresses of four industrial pieces with different shapes and alloys, reported in the literature. The r esults show that this methodology is useful for predicting the actual forgi ng stress necessary in industrial closed die forgings.