Compound cutter

Abstract

Abstract PURPOSE:To make a cutter suitable for continuous and high speed milling for very hard materials by making the sintered body formed on a substrate made of cemented carbide alloy become binding material composed of a peculiar amount of cubic crystal nitriding boron and the reminder comprizing metallic ingredient. CONSTITUTION:A compound cutter 1 is composed of a multiple crystal sintered body 2 made of cubic crystal nitriding boron or the like and a cemented corbide alloy substrate 3. The multiple crystal sintered body 2 consists of nitriding boron of which amount is 70%-95% of a whole and the remainder which is binding material made of metallic ingredient. The binding material is composed of groups consisting of one or more of the elements selected respectively from a first group comprizing Ne and Mo, a second group comprizing Ni, Co, and Fe, and a third group comprizing Al and Si. In this case, the elements consisting in the first group be 50% or less of the total amount of the binding material to improve the binding strength.

Inventors

• 👤 Hiroshi Shimoda
• 👤 下田　弘

Bibliographic Details