CUTTING PROCESS FOR RARE EARTH ALLOY

摘要

PROBLEM TO BE SOLVED: To elongate service life of a wire saw when cutting a rare earth alloy by using coolant mainly composed of water in a wire saw device. SOLUTION: The wire saw 20 with abrasive grain 24 fixed on a core wire 22 by a resin layer 26 is used in the cutting process for the rare earth alloy. It includes a process of cutting the rare earth alloy by moving the wire saw in a state with a portion of the rare earth alloy to be cut by the wire saw is dipped in the coolant mainly composed of water with surface tension at 25°C within a range of 25 mN/m-60 mN/m. A wire saw with an average distance between mutually adjacent abrasive grains in a length direction is within a range of≥150% and <400% of an average grain size of the abrasive grain, an average height of portions of the abrasive grain protruding from a surface of the resin layer is≤70% of the average grain size of the abrasive grain, and a thickness deviation rate of the resin layer with respect to the core wire is≤40% is used as the wire saw. COPYRIGHT: (C)2004,JPO