Invention Application
WO2011041693A2 CUTTING ELEMENTS CONFIGURED TO GENERATE SHEAR LIPS DURING USE IN CUTTING, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND METHODS OF FORMING AND USING SUCH CUTTING ELEMENTS AND EARTH-BORING TOOLS 审中-公开
配置成在切割过程中产生剪切唇的切割元件,包括这种切割元件的凿岩工具,以及形成和使用这种切割元件和凿岩工具的方法

CUTTING ELEMENTS CONFIGURED TO GENERATE SHEAR LIPS DURING USE IN CUTTING, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND METHODS OF FORMING AND USING SUCH CUTTING ELEMENTS AND EARTH-BORING TOOLS
Abstract:
Cutting elements for earth-boring tools may generate a shear lip at a wear scar thereon during cutting. A diamond table may exhibit a relatively high wear resistance, and an edge of the diamond table may be chamfered, the combination of which may result in the formation of a shear lip. Cutting elements may comprise multi-layer diamond tables that result in the formation of a shear lip during cutting. Earth-boring tools include such cutting elements. Methods of forming cutting elements may include selectively designing and configuring the cutting elements to form a shear Hp. Methods of cutting a formation using an earth-boring tool include cutting the formation with a cutting element on the tool, and generating a shear lip at a wear scar on the cutting element. The cutting element may be configured such that the shear lip comprises diamond material of the cutting element.
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