Method of intermittent arc welding using potassium and magnesium electrode additives

Abstract

Abstract A consumable electrode arc welding process which can be used for welding in the horizontal, vertical or overhead positions which comprises applying a pulsating current to a welding electrode so that at recurring intervals a welding arc is periodically established and extinguished wherein the period of time in which the arc is extinguished ranges from 0.001 to 0.01 seconds. the arc is established for a first interval of between 0.001 to 0.01 seconds and wherein the ratio of the interval during which the arc is extinguished to the full cycle is 0.1 to 0.7. A consumable electrode useful in a consumable electrode arc welding process which comprises a mixture of potassium and magnesium or an alloy thereof wherein the quantity of potassium multiplied by the square of the quantity of magnesium exceeds 0.02. A consumable electrode arc welding apparatus comprising a welding current control circuit, a first circuit having at least one semiconductor controlled rectifying element connected in series with a welding electrode for enabling a welding current to be applied thereto, and a second circuit for controlling the gate of said element for effecting phase control such that when said welding current is applied to said electrode, it is of the pulsing type.

Inventors

• 👤 M Rokujo
• 👤 T Ishibashi
• 👤 M Arikawa
• 👤 M Oishi

Bibliographic Details