WIRE TOOL

摘要

PROBLEM TO BE SOLVED: To provide a wire tool that solves conventional wire tool problems and is suitable for machining a metal block of neodymium alloy that is hard and difficult-to-machine, by using a core wire having high strength and high elasticity irrespective of a fine wire, and superior twisting characteristics that suppresses fatigue breaking, and by using a CBN which is superior in thermal stability. SOLUTION: The wire tool is a wire tool for a wire saw and composed of the core wire and fine abrasives having an average grain diameter of 15-60μm firmly adhered on an outer surface of the core wire via a metal coating layer, the core wire being an alloy-made, long length, and fine wire. The core wire has a tensile strength of 2,500-3,500 MPa and Young's modulus of 150-200 GPa. In the stress-strain diagram of the tensile test, the wire tool constituted of the alloy-made, long length fine wire of the high elastic type has the characteristics in which the actual area M1surrounded by the stress-strain diagram occupies, by area ratio, 80-98% of the right triangle M0which is drawn by connecting the datum line a, extension line b extending the proportional line of an elastic area, and a vertical line c passing the tension fracture point. COPYRIGHT: (C)2011,JPO&INPIT