FLUX MATERIAL FOR ELECTROSLAG WELDING OR FACING WITH RESTORATION OF COMPONENTS OR ELECTROSLAG REMELTING Russian patent published in 2011 - IPC B23K9/04 B23K35/36 C22B9/18 

FIELD: chemistry.

SUBSTANCE: invention relates to welding industry, particularly to electroslag welding or facing and can be used to restore components with high mechanical wear, as well as for producing special quality tool steel via electroslag remelting. The flux material contains a scheelite concentrate as a doping and slag-forming component, with the following content of basic components, wt %: tungsten oxide 45-72, iron oxide 10-25, manganese oxide 2-10, silicon oxide 3-8, graphite as a reducing agent, calcium fluoride as a fluxing agent, baddeleyite concentrate as a modifier, with the following content of basic components, wt %: zirconium oxide 92-96, silicon oxide 4-8, with the following ratio of flux components, wt %: scheelite concentrate 65-72, baddeleyite concentrate 0.5-3.0, graphite 14-18, calcium fluoride 16-20.

EFFECT: invention increases hardness while simultaneously reducing brittleness of steel, which is sufficient for special tool steel, owing to modification of the metal with zirconium, which leads to smaller grains of the metal and its high plasticity.

5 ex, 3 tbl