Electric arc furnace for tungsten inert gas welding , has an electric rectifier, current converter, electric rectifier on the secondary side, controllable rectifier, current regulating circuit and current theoretical value correcting device

摘要

Electric arc furnace comprises an electric rectifier, a current converter connected to the rectifier via an intermediate circuit, an electric rectifier on the secondary side with a smoother and a free-wheeling circuit, a controllable rectifier, a current regulating circuit and a current theoretical value correcting device.