| 摘要 |
Methods for welding a fixed-cutter bit body to a shank of an earth-boring bit are disclosed. An interface may be formed between the fixed-cutter bit body and the shank, and the interface may be friction stir welded. In some embodiments, the fixed-cutter bit body and the shank may overlap proximate to an exterior surface of the earth-boring bit. Methods for welding at least two portions of a bit body of a roller cone bit are also disclosed. An interface may formed between the at least two portions of the bit body of the roller cone bit and the interface may be friction stir welded. Earth-boring rotary drill bits formed using such methods are also disclosed.
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