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2002.
Identification of tribological state of metal forming processes by means of experiment and modelling
The given experimental and modelling method are shown that the tribological state on the contact surface of tool and workpiece can excatly be determined by means of contact stresses, contact coefficient friction and contact temperature on tool. The developed mathematical models described on adequate reliable method the tribological state in cold forming process. In this paper are presented tribological models for the backward and forward extrusion, deep drawing, rolling, profiles drawing and the method by sensors pins in tool for contact stress measurement on contact surface of tool.