RING IMPROVED IN LIGHTWEIGHTNESS, DURABILITY, IMPACT RESISTANCE, DECORATIVE PROPERTY AND MACHINABILITY ETC

摘要

The present invention relates to a ring comprising: an external ring in which tungsten carbide, a secondary carbide obtained by combination of iron family carbides or carbonitrides, and a metallic bond are mixed at a particular ratio, and a first external ring and a second external ring are dividedly formed therein to have shapes corresponding to each other; an internal ring assembled to be separated between the first and second external rings, and consisting of an outside internal ring constituting an outer circumferential surface of the ring and an inside internal ring constituting an inner circumferential surface of the ring; a ring fitting unit which is individually formed in the first and second external rings, and in which both sides of the outside and inside internal rings are fitted and coupled; and an assembly projection formed in each of the first and second external rings, and inserted in an outer circumferential surface of the inside internal ring so as to maintain strong assembly properties between the external ring and the internal ring for a long time.