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This paper relates to a study on the formation of elongated preforms in a CNC skew rolling mill. First, a numerical analysis
was performed to investigate forming processes for three different parts: a scraper, a connecting rod, and a hook. The shapes
and dimensions of preforms were designed, and rolling and closed-died forging processes for producing these parts were
simulated numerically. Distributions of temperature, effective strain and damage function were determined for rolled pre-
forms. Loads and torques in the rolling process were measured. It was found that the forming process of preforms performed
in a CNC skew rolling mill was characterized by relatively low force parameters in relation to the dimensions of formed
parts. Numerical simulations of the forging process showed that all forged parts had the required shape, which indicates that
the preforms were designed correctly. Following the numerical analysis, experiments were performed in which the preforms
were rolled under laboratory conditions (in a scale of 1:2). Experimental results demonstrated that the rolled parts had no
internal defects (cracks) and were characterized by high dimensional accuracy.
