Experimental research upon the durability in exploitation of the Adamite type rolls

Currently, many aspects of the thermal regime of lamination are still not enough studied, and also, there are no efficient methods for the determination and adjustment of the rolls temperatures from the industrial rolling mills. The intensification of the lamination process directly influences the durability of the rolls, these being the most solicited organs of machines from whole ensemble of the lamination equipment's. Therefore, the increase of the duration of exploitation and remove of the damages through the accidental rupture of rolls, the attenuation of rolls thermal fatigue, the avoiding of thermal shock and their rational exploitation are actuality issues that must be continuously researched. The research on the durability in exploitation of rolling mill rolls represents an important scientific and economical issue. The study represents a detailed approach of the influence of some technological factors (chemical composition) on the durability in exploitation of Adamite type rolls and suggests solutions meant to increase the durability of the rolls in exploitation. The research uses data collected from the industrial use at the Faculty of Engineering – Hunedoara, as well as laboratory experiments carried out on a unique, complex and original installation. In this sense, the paper propose to present some results a series of researches and experiments of durability on testing lots, through the laboratory experiment, in distinct series, that represent the object of the laboratory research methodology.