Hardfaced mill tooth rotary cone rock bit

Details Hardfaced mill tooth rotary cone rock bit Hardfaced mill tooth rotary cone rock bit

E - Fixed Constructions

21

B

E21B 10/50 (2006.01) B23K 35/32 (2006.01) C22C 29/08 (2006.01)

Patent

CA 2065481

-13- HARDFACED MILLED TOOTH ROTARY CONE ROCK BIT Abstract of the Disclosure A milled tooth rotary cone rock bit comprises chisel crested milled teeth with generously radiused corners at the ends of the crest of each chisel shaped tooth. A concave depression is formed in the crest between the radiused ends. A layer of hardfacing material formed over each tooth is thicker at the corners and in the concave depressions in the crest to provide a means for inhibiting wear of the hardfacing as the bit works in a borehole.

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