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SCR(Thyristor) type CO 2 welders have widely used for the welding process of heavy industries such as shipbuilding and plant. Since the industrial fields of shipbuilding and plant are usually exposed to severe welding condition with lots of dust, extreme temperature, high humidity and vibration, it is not recommendedto use inverter type welder despite its state-of-the-art technology. Many sophisticated functions in the inverter welder may not work due to malfunction of its sensitive components. Hence this study focused on digitalization of SCR CO 2 welder by making use of microprocessor for SCR phase control. By this application, fine control of output of the CO 2 welding systems is achieved. Also pulse output mode of operation is realized and its verification is carried out with aluminum sample welding. The experimental results showed sound weld bead. The front operation panel provide user with numerical parameter settings and monitors. It will help precise weld process monitoring and control with digital value.Key Words : CO

Development of Digital controlled SCR type CO2Welding System for Implementation Pulse Output

Development of Digital controlled SCR type CO₂Welding System for Implementation Pulse Output