Method of manufacturing a rock bit cone

Details Method of manufacturing a rock bit cone Method of manufacturing a rock bit cone

B - Operations, Transporting

22

D

76/21

B22D 13/04 (2006.01) B22D 13/06 (2006.01) B22D 19/06 (2006.01)

Patent

CA 1260735

ABSTRACT OF THE DISCLOSURE A method of manufacturing a rock bit cone having a sub- standially conical body on a surface of which a number of teeth are formed is manufactured by pressure-casting with using a casting mold having a molding surface including a cone body de- fining surface portion and tooth defining surface portions, pressure-casting with using the same casting mold having sepa- rately prepared inserts supported on the respective tooth de- fining surface portions or pressure casting, with using the same casting mold, firstly the teeth with a hard metal and sec- ondly the cone body with a tough metal. A resultant product is machined to form a bearing portion.

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