Influence of Lubrication on Manufacturing of Multicomponent Gear Wheels by Lateral Extrusion

Abstract

A combination of several manufacturing process steps in a simultaneous manner allows to save energy costs, reduce investment and economic logistical efforts. This paper provides the contribution reports on particular research work performed by the Institute for Metal Forming Technology, which deals with gearwheel bodies manufactured by lateral extrusion (forging). The scope of this paper focuses on the joining process and achievement of desired properties for forged wheel bodies. At the beginning of the forming process, a blank is placed in a ring having an axial and tangential profile. Due to a force application on the face surface, the material flows into the ring radially and in the following, the joint provides both a form and press fit. Since the forming and joining process is conducted in one step, the lubricant for the forming process must fulfil two requirements. First, low friction for the manufacturing process is advised. On the contrary, the joint gearwheel needs to transmit the applied load during use. In order to determine the influences of two different lubricants onto both the manufacturing processes and static torque application, experimental investigations were performed