APPARATUS AND METHOD FOR MANUFACTURING MONOCRYSTALS, AND MONOCRYSTAL

摘要

An apparatus for manufacturing monocrystals, using a pull-down method, wherein a raw powder material (5p) is supplied onto a premelting plate (3) in an electric furnace (10) by a raw powder material supply unit (20) to melt the material (5p) thereon and form a material melted-liquid (5m), which is introduced into a crucible (2) continuously by dropping, to grow crystals (18), dry air being introduced into the raw powder material (5p) in a tank (6) therefor to prevent the material (5p) from being moisturized, a pipe (9) for transferring the raw powder material (5p) being cooled to prevent the material (5p) from being melted to clog the transfer pipe (9) with a melted material, whereby monocrystals having a stable chemical composition, a large diameter and a large length can be manufactured at a low cost.