To provide a super-abrasive grain wire saw capable of preventing peeling of a binding material caused by falling of a super-abrasive grain, effectively conducting slicing processing at high accuracy and having a long service life for a fixed abrasive grain type super-abrasive grain wire saw.
In this super-abrasive grain wire saw P, the super-abrasive grain D is fixed on a surface of a core wire W with the binding material R. A ratio of a projected area of the super-abrasive grain D to a surface area of the core wife W is 5% or more and 55% or less. By changing a mixture ratio of the super-abrasive grain D and the binding material R, the ratio of the projected area of the super-abrasive grain D to the surface area of the core wire W is controlled to 5% or more and 55% or less.
OGAWA HIDEKI
NAKAI MASANORI
URAKAWA NOBUO
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