Roller cones having non integral cutting structures, drill bits including such cones, and methods of forming same

摘要: Methods of manufacturing roller cones for drill bits include providing both integral teeth and non-integral on the cones. A layer hardfacing may be applied to teeth. Non-integral formed a body cone, or they separately from attached thereto. In some embodiments, are by building-up material. Roller earth-boring tools using such methods.