PURPOSE: To improve workability of a cutting edge and its life, by providing a hard grain-contained metal film layer to adhere onto an amorphous metal thin strip leaving an exposed part.
CONSTITUTION: The material is based on one or two kinds or more of Fe, Ni and Co. A cutting edge 7 is constituted of an amoprhous alloy thin strip 5. The cutting edge is formed in a 0.015W0.080mm thickness while in an averaged width equal to or smaller than a value 250 times the thickness. A hard grain-contained metal film 6 adheres by the publicly known method to the surface of said thin strip leaving an exposed part. A hard drain can be suitably selected in those used in the past. The film 6, consisting of a hard grain 6a and a metal combined phase 6b, is dispersed in a spot pattern. Accordingly, a material to be cut can be efficiently cut further with a good yield rate.
TAKAHASHI TSUTOMU
KUROMITSU YOSHIO
HIJI TOSHIHARU
TANAKA TADAHARU
| JPS59158216A | 1984-09-07 | |||
| JPS5845872A | 1983-03-17 |
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