Abstract: A new friction testing method by combined forward rod-backward can extrusion is proposed in order to evaluate frictional characteristics of lubricants in forging processes. By this method the ...

Abstract: To examine the seizure mechanism in cold extrusion and forging, a bifurcating extrusion type friction testing machine has been manufactured by the authors. This friction testing method was devised ...

Abstract: A new friction testing method based on combined forward conical can-backward straight can extrusion is proposed in order to evaluate friction characteristics in severe metal forming operations. ...

Abstract: Four kinds of solid lubricants were tested in order to examine the frictional characteristics and the yield shear stress by the friction testing apparatus developed by the authors. The frictional ...