Hot Flashless Precision Forging of Long Pieces

Within the net-shape and near-net shape technology hot flashless precision forging leads to high forging accuracy of the workpiece with regard to dimensional and surface finish tolerances. The main advantages are shortened production cycles by eliminating machining operations and the saving on raw material lost during machining. By producing ready-to-mount forgings high economical and ecological processes can be designed. In Europe the transfer of the flashless precision forging technology into industry has just begun for rotational forgings, e.g. bevel gears. In case of long workpieces, e.g. connecting rods some important aspects must be taken into consideration to meet the special requirements by designing the process. This article points out the requirements and describes the procedure how to design the process supported by CAD and FEM, the used process technology as well as the benefits.