Circular saw blades with cutting teeth composed of ultrahard tool material, and method for its production

摘要

A saw, comprising:a carrier blade (110);a cutting tip (120) having a first ultrahard layer (150), e.g. PCD or CBN, and a second layer (160), e.g. carbide;said cutting tip being attached to said carrier blade; andsaid cutting tip being oriented such that the center of mass of said first layer is generally farther from said carrier blade than is the center of mass of said second layer.;A method of fabricating a saw, comprisisng:forming a carrier blade;forming a supporting blade on said carrier blade;bonding an ultrahard material to a non-ultrahard material to form a cutting tip;brazing said cutting tip onto said supporting blade such that the plane of a joint between said ultrahard material and said non-ultrahard material is oriented at an angle of less than 45 degrees away from the direction of cutting.