Heat-treatment furnaces are used to process metals, ceramics, and a variety of other components. These furnaces include metal treatment furnaces, vacuum furnaces, and atmosphere furnaces, all of which differ in terms of temperature, atmosphere, and other usage conditions.
In heat treatment furnaces where heat treatment processes with extremely harsh conditions (high-temperature environments in excess of 1000°C) are used, common metals (e.g. iron and stainless steel) are unable to withstand use as parts.
Isotropic graphite--which has excellent thermal durability--is therefore used in place of such metals in heaters, structures, product processing jigs, shelves, and similar components used in furnace interiors. In addition, Toyo Tanso provides high-strength , lightweight C/C composites, and can propose measures to extend product life and save energy.