SUPER HARD ALLOY BASEPLATE OUTER CIRCUMFERENCE CUTTING BLADE

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PROBLEM TO BE SOLVED : To provide a super hard alloy baseplate outer circumference cutting blade capable of machining a rare earth sintered magnet block having a high dimensional accuracy. SOLUTION : The super hard alloy baseplate outer circumference cutting blade is formed of a super hard alloy and has a cutting blade part 20 on an outer circumferential edge of a thin circular ring-shaped baseplate 10. The cutting blade part contains : diamond abrasive grains and/or cBN abrasive grains formed by pre-coating with a magnetic material; a metal or alloy formed by electroplating or electroless plating which makes connection between the abrasive grains and between the abrasive grains and the baseplate; and a thermoplastic resin with a melting point of 350°C or less and a Poisson ratio of 0.3 to 0.48 impregnated between the abrasive grains and between the abrasive grains and the baseplate, or a thermosetting resin formed by curing a liquid-state thermosetting resin composition with a curing temperature of 350°C or less and a Poisson ratio of 0.3 to 0.48 impregnated between the abrasive grains and between the abrasive grains and the baseplate. COPYRIGHT : (C)2015, JPO&INPIT