METHOD FOR PRODUCING BIMETALLIC INGOT WITH CLADDING LAYER FROM CORROSION-RESISTANT STEEL Russian patent published in 2022 - IPC B22D23/10 C22B9/18 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, more specifically to the production using electroslag technology of bimetallic ingots intended for subsequent rolling into bimetallic strips and sheets. A metal billet is placed with a gap from the mold wall, a consumable electrode made of corrosion-resistant steel is installed in this gap, a slag bath is laid and the consumable electrode is remelted in it with the formation of a deposited layer, on the base layer billet with a thickness of 150-300 mm and a width of 1000-1600 mm the deposited layer, the thickness of which is 5-30% of the total thickness of the ingot, according to the invention, during the remelting process, the current values ​​are adjusted in the range of 9-13 kA and the voltage in the range of 37-45 V, while the input power values ​​are in the range of 420-500 kW, and the remelting of an electrode made of corrosion-resistant steel containing 0.3-0.6% titanium is carried out under slag containing 1-5% TiO₂.

EFFECT: invention ensures minimization of titanium waste and increase of corrosion resistance of the deposited layer of bimetallic ingots and sheets while maintaining high strength and continuity of the layers connection and manufacturability.

1 cl, 1 ex, 2 tbl