Janusz toMCZAK

effect of technologicAl pArAMeters on the rotAry coMpression process wpływ pArAMetrów technologicZnych nA prZebieg procesu obcisKAniA obrotowego* The paper presents results of a numerical analysis of the rotary compression process for producing extreme steps of a multi-step hollow shaft. The numerical simulations of the process were conducted by the finite element method (FEM), using Simufact Form-ing version 11.0. Applications of hollow parts in industry are discussed and benefits of their use are presented. With numerical modeling, the effect of basic rotary compression parameters (deformation ratio δ, wall thickness go, billet initial diameter D, advance speed v and rotary speed n of the tools) on shape of the produced parts are determined. Also, force parameters of the process, tool thrust force and torques are determined. The presented numerical analysis results confirm the possibility of producing multi-step hollow shafts using tube sections as billet material by metal machining methods