PROCEDURE FOR PRODUCTION OF REINFORCED GRAPHITE FOIL, FOIL AND BRAIDED STUFFING BOX Russian patent published in 2011 - IPC C04B35/536 C04B35/83 

FIELD: metallurgy.

SUBSTANCE: procedure for fabrication of reinforced stuffing box of thermo-expanded graphite consists of manufacture of first and second work pieces of thermo-expanded graphite, in arrangement of reinforcing filler with glue coating between them, in fabrication of package and in successive treatment of package under pressure. As a glue coating there is used a film glue on base of copolymer of ethylene and vinyl-acetate. First there is formed the first work piece of thermo-expanded graphite. Reinforcing filler impregnated with melted polymer glue is laid on the first work piece. The second work piece of thermo-expanded graphite is formed on surface of impregnated reinforcing filler by supplying powder of thermo-expanded graphite onto said surface and by successive preliminary rolling. Further, the package is processed under pressure by finish rolling. The disclosed here procedure is implemented for fabrication of reinforced graphite foil used for production of braided stuffing box.

EFFECT: upgraded mechanical properties in wide range of temperature.

11 cl, 1 ex, 1 tbl