Published 2001-06-29
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Abstract
The paper presents the analytical-experimental method of analyzing the hole-flanging process of the necks upon the elements with the previously-formed hole. The chosen material is high alloy steel Č.4574 that possesses high workability while undergoing a treatmen in the cold state. The semi-empirical formulae are set up to connect the most important geometric parameters of the hole-flanging (flanging ratio, reduced sheet thickness, height of the extruded neck).