Abstract: The relation between pool depth h(0,Y) and processing parameters of electroslag remelting under the automatic feeding system of consumable electrode was investigated.This relation can be expressed by h(0,Y)=A·e-B/Y,where A,B are functions of remelting parameters,Y is the height of ingot.By this formula,with remelting parameters known,h(0,Y) can be estimated at any Y.Two remelting regimes were compared:(1)the remelting current was reduced at regular intervals;(2)the remelting current was constant.The results showed that h(0,Y) was small and its change was less with the increase of Y under regime 1.These effects facilitate the formation of homogeneous cast structure.If the interval and current level are chosen properly,it is possible to get a pool with quasi-equal depth when Y exceeds a certain extent.