DEVICE FOR FABRICATING LARGE BIMETALLIC FORMING ROLLS Russian patent published in 2009 - IPC B22D19/16 

FIELD: metallurgy.

SUBSTANCE: device contains mould with horizontal axis and flasks for forming upper and lower roll necks. Flasks contain a cover and ribbed cartridges, formed with sand-clay mixture repeating the configuration of roll necks. A metallic insertion is installed between the flasks. The upper flask consists of a feeding zone equal in its weight to 4-6% of roller weight. The metallic insertion is conjugated with end surfaces of the cartridges under the angle of 35-50° and has thickness which is 0.2-2.0 of the flask wall thickness. Slots for securing replaceable journals are made on the exterior surface of the mould.

EFFECT: increased strength of melting two heterogeneous in chemical composition layers of metal and reduction of temperature cycle between hardening of working layer and pouring of second metal.

2 dwg, 1 ex