Patent ID: 6283198
Filing Date: 2001-09-04
Classification: B22D

Abstract:
A method of electroslag cladding an elongated round-section billet with a sectioned mold having a current-carrying part and non-current carrying forming part, comprising the steps of:mounting the billet in the mold;pouring molten slag into a gap between the billet and the mold in plural stages, the plural stages including pouring a first portion of the molten slag into the gap between a bottom plate primer and the non-current carrying forming part to a first level to fill an air gap between sections of the mold, allowing the slag to solidify in the air gap, providing electrical power to the current-carrying part of the mold and to the billet, and pouring a further portion of the molten slag into the gap between the bottom of the current carrying part and the top of the non-current carrying part to a second level higher than the first level;setting electrical conditions for electroslag cladding and creating an electromagnetic field in the mold;pouring a liquid cladding metal into the gap between the billet and the mold;rotating the molten slag and the liquid cladding metal with the electromagnetic field; andwithdrawing the billet from the mold while electroslag cladding the billet with the cladding metal.