The work is aimed at studying the effect of additions of oxides K₂O, Na₂O, MgO, Al₂O₃ on slag density and viscosity, as well as the separability and covering capacity of slag of the CaO–MnO–SiO₂ system obtained by melting the fused flux during automatic arc welding of low-carbon steels. The subject of research is physicochemical and technological properties of slags, mechanical properties of welded joints obtained as a result of the process of automatic submerged arc welding. It is shown that with an increase in K₂O and Na₂O content slag density and viscosity, as well as the separability of the slag crust, decrease, and an increase in MgO and Al₂O₃ content increases slag density and viscosity. Based on results of the work, a composition of the slag base of fused flux is developed on the basis of oremineral raw materials of the Republic of Uzbekistan, selected on the basis of the CaO–MnO–SiO₂ ternary system melting diagram. The results obtained make it possible to increase welded joint strength properties by 10–12%.

本工作旨在研究添加氧化物K的影响₂O、Na₂ O、MgO、Al₂O₃熔炼得到的CaO-MnO-SiO₂体系的炉渣密度、粘度以及炉渣的分离性和覆盖能力低碳钢自动电弧焊过程中的熔化焊剂。研究的主题是炉渣的物理化学和工艺性能，以及自动埋弧焊过程中获得的焊接接头的机械性能。结果表明，随着 K₂O 和 Na₂ 的增加O含量使炉渣密度和粘度以及渣皮的分离性降低，而MgO和Al含量增加₂O ₃含量增加炉渣密度和粘度。根据这项工作的结果，以乌兹别克斯坦共和国的矿石原料为基础，开发了一种熔剂渣基成分，该成分以CaO–MnO–SiO为基础进行选择₂三元体系熔化图。所获得的结果使得焊接接头强度性能可以提高 10-12%。