Abstract

It is a well recognized fact that the arc-air gouging process is more advantageous than the pneumatic chipping method in point of economy. In carring out the gouging in Japanese shipyards there arises an important problem because their electric source is of alternating current whereas the arc-air gouging should be of direct current.Considering this special situation of Japanese shipyards, authors have made different types of carbon electrodes for arc-air gouging in order to investigate their applicabilities and ascertained the usefulness of carbon electrode for use with alternating current in shipyards.

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