Study on Phenomena of Inert Gas Metal Arc Welding by High Speed Motion Pictures (Report 2)

Investigation in Use of Cathode Ray Oscilloscope together with High Speed Camera

Abstract

By the high speed camera, the welding phenomena were photographed together with images of arc voltage and current on the same films in use of the cathode ray oscilloscope.
By the high speed motion pictures, the following points were studied.
(1) Variation of arc voltage and current at instant of separation of molten metal droplet from wire end.
(2) Effects of polarity on shapes of droplet and on its transference.