WEAR RESISTANT MATERIAL FOR THE SHIRTTAIL OUTER SURFACE OF A ROTARY CONE DRILL BIT

摘要

A rotary cone drill bit includes: a body, a leg depending from the body, a bearing shaft extending from the leg and a cone mounted to the bearing shaft. The leg includes a surface location that is subject to wear during operation of the bit. A bottom surface of a hard material plate is attached to a substantially conforming surface of the leg at the location subject to wear. The attachment of the conforming surfaces is made using a flowable material such as a brazing material.