APPARATUS FOR PRODUCTION OF GRAPHITE FIBERS

摘要

A vertical heating apparatus for production of graphite fibers from preoxidized fibers or carbon fibers, said apparatus comprising: a tubular heating element which generates heat by high frequency induction; a heat-insulating material layer provided around the tubular heating element in coaxial relation thereto, said heat insulating material layer being composed of carbon particles having specific grain diameters and angles of repose; and a high frequency induction unit provided around the heat-insulating material layer in coaxial relation thereto.