Metal-based ceramic cutting tool and preparation method

Abstract

The invention discloses a metal-based ceramic cutter and a preparation method thereof, the main components of which are composed of the following materials: TiN: 7‑15%, TiC: 40‑60%, Mo 2 C: 8‑20%, WC: 8‑20%, ZrC: 1‑2%, Al 2 o 3 : 1‑2%, Si 3 N 4 : 3‑5%, BN: 0.1‑0.5%, C: 1‑2%, Ni: 8‑15%, Co: 3‑8%, Cr: 4‑8%, La 2 o 3 : 1‑3%, CeO 2 : 0‑1%, Pr 6 o 11 : 0‑1%, Nd 2 o 3 : 0-1%, by grinding and preparing powder, pressurized granulation, initial molding, pressure sintering, post-treatment, etc., reasonable control of process parameters, and finally ceramic tool material, the invention is simple to operate, and the tool material has chemical stability and It has the advantages of anti-cutting fusion, capable of cutting refractory metals, and small friction coefficient against steel.

Description

technical field

[0001] The invention relates to the field of metal materials, in particular to a metal-based ceramic cutter and a preparation method. Background technique

[0002] At present, the main tool materials are high-speed steel and cemented carbide. Tool wear is the main failure mode of the tool, including wear, chipping, chipping, and knife breaking. The mechanical properties and process properties of the tool material and the economy that can minimize the tool cost Sex is the direction of tool development. Traditional molten high-speed steel tools have good high-temperature hardness, but their bending strength and toughness are low. The price of traditional carbide tools is high, and their demand for tungsten resources, the main component, is large. Development There are certain limitations;

[0003] The performance of cermets is between ceramics and tungsten carbide series hard alloys. Its hardness is higher than that of cemented carbide tools, its oxidation res...