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Information × Registration Number 0219U004812, 0118U006939 , R & D reports Title Development of theoretical and technological fundamentals of surfacing and welding processes. popup.stage_title Head Chigarev Valeriy Vasil'evich, Доктор технічних наук Registration Date 11-11-2019 Organization State Higher Educational Institution "Pryazovskyi State Technical University" popup.description2 Research Object - surfacing and welding of steels and alloys. A purpose of work - an increase of reliability of details of machines. A research method is theoretical and technological researches of processes of surfacing and welding. The influence factors on the state of surfaces of materials that come in contact with the connection to obtain a strong connection during welding by pressure are considered in the work. In the work the process of electric arc high-speed surfacing at low racing energy of hollow cylindrical parts is developed, which, due to the passage of the current in the opposite direction to the welding in the optimum ratio, provides the equilibrium of the electromagnetic forces acting on the arc and the liquid metal of the welding bath, the absence of magnetic blasting, stability of the process, quality formation of deposited rollers. the restoration of cylindrical parts and the cost savings for the purchase of new parts, including hydraulic cylinders. Improvement of the method of manufacturing a powder tape with an aluminum shell, which has ensured the stability and quality of the weld metal. The properties of the connecting ingredients of the welding flux and the influence of the concentration of the flux ingredients on the activity coefficient are considered. In the work the features of surfacing of composite alloys on the basis of copper are investigated. It has been established that a powder electrode containing a mechanical mixture of chromium and carbon has the best technological properties for surfacing than that containing the finished Cr3C2 chromium carbide. The process of high-speed surfacing at low racing energy of banded support rolls has been developed, which provides reduction of welding volumes, crushing microstructure, reduction of the share of the participation of the base metal in the welded, the zone of thermal influence, the absence of layering of the deposited metal, increase of cracking strength and absent There are breakages of bandages. The paper considers the calculation of the mathematical model of the chemical composition of the powder wire for metallic surfacing with the effect of self-strength during the operation, which allows to increase the wear resistance index and reduce the cost of such alloying elements as nickel. Product Description popup.authors Алістратов Валерій Миколайович Білик Олександр Григорович Зусін Антон Михайлович Зусін Володимир Якович Чигарьов Валерій Васильович Щетинін Сергій Вікторович Щетиніна Віра Іванівна popup.nrat_date 2020-04-02 Close