Hazard Assessment of Heat-Resistant Igniting Composition and Parameters of its Initiation Mechanism under Conditions of Mechanical Effects

Abstract

The article contains the results of research of the mechanism of heat-resistant igniting composition initiation from the perspective of deformation processes in the circumstances of short-term mechanical effects (shock, friction) and depending on different factors (ratio of h/d, layer thickness, speed of shock load, composition dispersity, value of roller displacement and surface roughness). We identified the peculiarities and studied the deformation processes taking place in pre-explosive period. Herewith, we showed that the mechanical impact on the composition layer result in emergence of several zones on it, which are determined by the irregular distribution of pressure and various deformation processes, from elastic to elastic-brittle. We found that among the dangerous factors in the mechanical methods of processing of the studied composition, the main ones are the terms of localization of the elastic flow at hitting under the ball and friction at the surface denudation. As a result, we developed recommendations to improve explosion and fire safety of the technology of perspective energy-consuming substance processing and substantiated the conditions of its safe application as the initiating charge in the blasting cap design.