APPARATUS FOR MANUFACTURING SINGLE CRYSTAL

摘要

PROBLEM TO BE SOLVED: To provide such an apparatus for manufacturing a single crystal as having a wire changeable at an appropriate time and is excellent in the safety and productivity. SOLUTION: The apparatus is such an apparatus that an eddy current examining sensor 20 for detecting the abnormality (such as the breaking of an element wire) in a wire 12 to be wound up or wound down with a winch 11 is arranged at the neighborhood of the winch 11. This apparatus makes a non-destructive test for the wire 12 at a time of the loading or unloading using the above eddy current examining sensor 20 and sends an alarm signal on the basis of a detective signal level of the above sensor 20. COPYRIGHT: (C)2005,JPO&NCIPI