| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite bond grinding wheel which has a wear- resistance higher than that of a resin bond grinding wheel, and has an autogenous edging action high than that of a metal bond grinding wheel. SOLUTION: Abrasive grain 12 is dispersed in a composite bond grinding wheel 21 over its entirety. A metal binder phase 13 is formed by dispersing air pores 15 opened to the outside, in metal containing cobalt. The air pores are filled therein with thermosetting resin with which the outer surface of the metal binding phase 13 is covered so as to form a resin binder phase 14 having a cross-linked structure. The resin binder phase 14 is contained therein with a silane coupling agent 16 dispersed therein. The metal binder phase 13 and the resin binder phase 14 have cross-linked structures, respectively, and are physically integrally formed with each other and as well chemically coupled with each other through the intermediary of the silane coupling agent 16. The abrasive grain 12 is physically held by the metal coupling phase 16, and is chemically coupled to the resin binder phase 14 so as to be fixed.
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