METHOD FOR PRODUCING BIMETALLIC INGOT Russian patent published in 2023 - IPC B22D7/02 C22B9/18 

FIELD: special electrometallurgy.

SUBSTANCE: electroslag method for producing bimetallic ingots intended for subsequent rolling into a sheet, strip or band. The method includes electroslag building up of a consumable electrode in the form of an active component onto a passive component, previously placed in a mould with a gap from the wall, in which the consumable electrode is installed and liquid flux is poured until the current appears in the electrode-slag circuit, while a voltage of 23- 24 V, after which, at an operating current of 5-8 kA and a voltage of 12-14 V, welding is carried out to obtain a bimetallic ingot, with a uniform layer thickness from 25 to 35 mm and a width of 300 mm, while to improve the surface quality in the course of melting into the gap flux is evenly added between the electrode and the wall of the mould in the ratio of components: NaF - 80% and LiF - 20%.

EFFECT: ensuring the high quality of bimetallic ingots of a certain size range, high adhesion strength and continuous joint of layers of uniform thickness over the entire contact plane, as well as satisfactory surface quality of the built-up layer.

4 cl, 2 tbl, 1 ex