Cutting element for a rotary drill bit and method for making same

Patent · Tue Nov 10 04:00:00 EST 1987

OSTI ID:5863383

Dennis, M D

This patent describes a cutting element of the type comprising a generally cylindrical shank defining a front-to-rear extending longitudinal axis and having a mounting face disposed at a front end of the shank, and a cutting blank mounted on the mounting face. The blank comprises a substrate having a base surface and a cutting surface. The improvement wherein the shank comprises: a body formed of a ductile material and defining an outer generally cylindrical side surface, and a rear surface opposite the mounting face, and at least one stiffening element formed of a hard material embedded in the body and extending in a generally front-to-rear direction. A method is described of making a cutting element comprising the steps of: providing at least one stiffening element formed of a hard material, at least partially coating the stiffening elements with a high temperature-resistant material, casting a body from a ductile material with the stiffening element embedded therein, bonding a cutting blank to both the ductile and hard material of the mounting face.

• Assignee: Strata Bit Corp., Houston, TX
• Patent Number(s): US 4705123
• OSTI ID: 5863383
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
CASTING
DESIGN
DRILL BITS
DRILLING
DRILLING EQUIPMENT
DRILLS
DUCTILITY
EQUIPMENT
FABRICATION
HEAT RESISTANT MATERIALS
MATERIALS
MECHANICAL PROPERTIES
ROTARY DRILLING
ROTARY DRILLS
TENSILE PROPERTIES