METHOD FOR PRODUCING LONG-MEASURING COMPOSITE WIRE BASED ON HIGH-TEMPERATURE SUPERCONDUCTING COMPOUNDS Russian patent published in 2006 - IPC H01B12/00 H01B13/00 

FIELD: producing long-measuring composite wires based on high-temperature superconducting compounds.

SUBSTANCE: proposed method includes formation of multiconductor billet by filling silver based reinforced alloy sheath with bismuth ceramic powder, deformation of multiconductor billet obtained to desired size by drawing without heating at deformation degree per pass ranging between 0.5 and 20%, assembly of multiconductor billet by disposing desired number of metered parts of deformed multiconductor billet in mentioned sheath, extrusion of multiconductor billet at temperature of 150 to 300 °C and drawing coefficient of 4 to 30, rolling in the open without heating at deformation degree per pass of 1 to 50%, and thermomechanical treatment under preset conditions. Ceramic core is sequentially compressed to enhance critical current density.

EFFECT: improved conductor geometry, ceramic-to-sheath interface, and ceramic core texture, enhanced wire mechanical properties and sheath resistance, reduced heat conductance of sheath.

1 cl