A study on precision cold forging process improvements for the steering yoke of automobiles by the rigid-plastic finite-element method;Alloy designing of high strength steels for hot forging; Analysis of the friction and wear behavtour of not work tool steel for forging;Application of 3D hot forging process simulation for V6 engine crankshaft; AZ80 and ZC71/SiC/12p closed die torglngs for automotive applications: technical and economic assessment of possible mass production