Экспериментальная оценка динамики изменения микротвердости активных поверхностей зубьев редуктора вертикальных валков стана «Слябинг 1150» ПАО «Запорожсталь»

Abstract

The features of the operating conditions of mechanical drives of blank mills are considered and it is shown that in the conditions of direct transit rolling in tandem with a continuous thin-sheet hot rolling mill 1680, the technological process can be implemented only if the gears are highly reliable. To monitor their technical condition, it is proposed to use a change in the microhardness of the working surfaces of the teeth as an evaluation criterion, which can only be established experimentally. To conduct these studies, a modified rotatable central compositional plan was proposed, which, unlike the basic one, insignificantly increases the scope of tests, allows constructing not only a three-parameter model, but also one-parameter ones, which significantly expand the information content of the results. Carrying out a comparative analysis of the dynamics of changes in the microhardness of the active surfaces of the teeth, it becomes possible to determine the residual life of the engagement in the online mode, as well. hence prevent emergency situations.