| 摘要 |
PROBLEM TO BE SOLVED: To provide a lapping material formed in a thin thickness state within 1 mm thickness to be suited for fine lapping process in polishing or the like of a rib groove in an electric discharge machining surface of a metal mold, in the lapping material of stick shape arranging an inorganic long fiber and abrasive grains as a polishing element in a resin matrix. SOLUTION: This lapping material is a thin thickness stick-shaped lapping material arranging an inorganic long fiber 1 as a polishing element in a resin matrix 2 to be formed within 1 mm thickness, an inorganic long fiber of 100 Gpa or more elastic modulus is used as the inorganic long fiber, also 5 to 20 wt.% abrasive grains are contained in the matrix 2, and this constitution is provided with 450 Mpa or more bending strength and 30 Gpa or more bending elastic modulus.
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