COOKING A VESSEL MANUFACTURE METHOD

The present invention relates to an alumina sintering furnace structure that sinters high purity alumina used for single crystal growth, and the alumina sintering furnace structure includes: a chamber; a pot furnace for receiving alumina powder to the chamber to conduct the sintering for the alumina powder; heating means having a heating material adapted to emit high temperature heat for the alumina sintering to the pot furnace, the heating material producing the heat if power is supplied thereto by means of a terminal; a first reflection plate adapted to reflect the high temperature heat emitted from the heating means around the heating means onto the pot furnace; and vacuum means connected to the interior of the chamber to maintain the interior of the chamber to a vacuum state and to accelerate the alumina sintering. Accordingly, through the formation of the heating means formed of the heating material made of tungsten or molybdenum and the first reflection plate made of yttria-stabilized zirconia, the alumina powder can be sintered to a high temperature within a short period of time, thus remarkably reducing the work time, improving the productivity and minimizing the production cost, without having any separate high expensive equipment. Further, the alumina powder can be sintered at the high temperature, thus achieving tight tissues to suppress the formation of bubbles acting as a main defect upon the formation of single crystal, improving the purity of the alumina itself to remove the impurities from the single crystal, and providing a high quality aluminum product advantageous to the single crystal growth.