Нікопольський фаховий коледж

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ENG: Nikopol Vocational College

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    Modern Technologies for Strengthening Steels for the Manufacture of Protective Elements of Bulletproof Vests. Part 1
    (National Science Center, Kharkiv Institute of Physics and Technology, Kharkiv, 2026) Deineko, Leonid M.; Pinchuk, Victoria L.; Panchenko, A. V.
    ENG: In the conditions of a full-scale war that is ongoing in Ukraine, the issue of protecting the lives and health of citizens has acquired particular importance. Reliable personal protective equipment, in particular personal protective equipment (PPE) – bulletproof vests, are vital to save lives and minimize the risks of injuries and wounds not only from bullets, but to a greater extent from fragments. The key requirement for the armor plate material is the ability to withstand the action of ammunition of a certain type without penetrating and damaging a person with fragments that can peel off from the opposite plane of the armor plate. Armor steels provide such ballistic resistance with high-strength low-alloy or alloyed grades and the structural state of the metal, which is provided by preliminary and final thermal (or combined) treatment. The specific level of properties of the metal of armor plates already depends on the protection class (for which they are planned), chemical composition and metal processing parameters. The purpose of this article is to study the influence of the chemical composition of steels and the modes of thermal (for a homogeneous state) and chemical-thermal treatments (to obtain a heterogeneous state) on the properties of the steels selected for the study and to choose a rational composition of steels for the manufacture of protective sheets of armor and to develop modern processing modes to ensure 4–5 classes of protection according to DSTU 8782:2018, which is one of the key ones in Ukraine in this area. Based on the results of theoretical and experimental research, parameters of the technology of heat treatment with volumetric strengthening of protective elements of body armor are proposed, using chromium-nickel-molybdenum-vanadium steel as an example to obtain bulletproof effect up to class 5 of protection in the conditions of operation of body armor.