INSULATED STATIONARY CONSUMABLE ELECTRODE WELDS THICK METALS

摘要

A welding method permits thick pieces of metal (2) to be welded together over the entire face of their touching surfaces during a process of self organizing, single pass arc welding in the ambient air without any special proofing of the welding bath melt. Higher quality and faster welding is achieved by using an insulated stationary consumable electrode (1) clamped between the parts (2) to be welded together and by selection of the value of the electric power applied to the end face of the electrode. The arc (4) has a value of electrical power that is sustained at a level which keeps the pressure of the metal vapor which arises due to vaporization of the electrode (1) material in the welding zone 1.1 to 2.0 times higher than the air pressure. This protects the welding bath metal melt against air oxidation and interaction with other air elements.