Kovalevskyi O. Development of technology and equipment for the welding in carbon dioxide with forced transfer of electrode metal

Object of research: the process of welding consumable electrode of carbon dioxide and forced vibrations of the electrode tip. Subject of research: the mechanism of transfer of electrode metal. Research methods: the performance of work used methods of physical and mathematical modeling, methods of experimental studies oscillography arc. The measurements were made by shield voltmeters and ammeters, the value of the spray was determined by gravimetric method. The thesis is based on the scientific, theoretical developments and industrial research solved an important scientific - technical problem - reducing splashing of electrode metal in welding consumable electrode carbon dioxide. The study of power influence of the electrode tip in the liquid droplet, found annular flow velocity increases with the frequency of oscillation of the electrode tip and prevent the separation of the drop. The design is developed and manufactured equipment to create mechanical vibrations of the electrode tip, which provide compulsory transfer of electrode metal. A scheme and a mathematical model that calculates the parameters of the inverter, which provide atomizing electrode metal transfer. With the use of advanced DC converter circuit to pulse with a variable frequency, obtained by matching the frequency of electrical and mechanical circuits, to provide maximum vibration amplitude of the electrode tip. Found that the use of forced oscillations of the electrode tip with the use of equipment designed to reduce the loss factor and increase the rates of melting and welding.