Introduction of the exothermic mixture into the flux-cored electrode core filler and its’ influence to the deposited metal composition and recovery factors of alloying elements were investigated in the article. An influence of FCAW-S core filler composition with exothermal mixture implemented for recovery hardfacing by wear-resistant alloys was investigated in this article. An influence of oxidizing agent to reducing agent ratio (CuO/Al) in the composition of exothermic mixture, on the recovery factors of the alloying system components was considered. As well as the ratio of exothermic mixture oxidizing agent to graphite (CuO/C) and the amount of exothermic mixture (TM) in the flux-cored wire filler composition. Some mathematical models of the recovery factors dependence on the studied factors were received as a result of the investigation.

An analysis of the results of the study showed that the ratio of the oxidizing agent to the reducing agent in the exothermic mixture (CuO/Al) had the greatest influence on the recovery factors of alloying elements. Received mathematical dependences of the alloying elements recovery rates allowed to optimize the calculation of composition of the FCAW-S core filler mixture with exothermic mixture and the deposited metal composition. To receive the high values of the elements recovery factors, the parameters subject to investigation should have the following values:CuO/C = 3.75 … 5.25, CuO/Al = 3.75 … 5.25, CuO + Al = 33 … 45 wt.%.

本文研究了放热混合物引入药芯焊丝电极芯填料中及其对熔敷金属成分和合金元素恢复因子的影响。本文研究了FCAW-S芯填料组成与放热混合物对耐磨合金恢复堆焊的影响。考虑了放热混合物组成中氧化剂对还原剂比率（CuO / Al）对合金体系组分回收率的影响。以及药芯焊丝填料组合物中放热混合物氧化剂与石墨的比率（CuO / C）和放热混合物的量（TM）。研究结果得到了一些恢复因子对所研究因子的依赖性的数学模型。

对研究结果的分析表明，放热混合物中氧化剂与还原剂的比例（CuO / Al）对合金元素的回收率影响最大。合金元素回收率的数学关系式可以优化FCAW-S芯填料混合物，放热混合物和沉积金属成分的组成计算。为了获得较高的元素回收因子值，要研究的参数应具有以下值：CuO / C = 3.75…5.25，CuO / Al = 3.75…5.25，CuO + Al = 33…45 wt。％。