Powder metallurgy ceramic cutter material and preparation method thereof

Abstract

The invention discloses a powder metallurgy ceramic cutter material and a preparation method thereof, and belongs to the technical field of powder metallurgy. The material is prepared by the followingcomponents of, in percentage by weight, 60%-80% of AlMgB14 ceramic powder, 1.0%-2.2% of nickel, 0.3%-0.66% of molybdenum, 1.0%-1.7% of titanium, 0.2%-0.6% of carbon, 1.5%-2.2% of silicon, 0.1%-0.3% of manganese, 0.1%-0.3% of sulfur, 0.1%-0.4% of phosphorus and the balance of pure iron. According to the method, a powder metallurgy cutter material is formed by carrying out high-speed mixing, vacuumball milling, pressing and forming, and sintering. The material and the method have the advantages that the components are novel, and in order to improve the toughness of a cutter, the components ofthe cutter are more reasonable and longer in service lives, so that the mechanical property of the cutter can be greatly improved, and the use requirements of multi-vibration and high-speed cutting are met.

Description

technical field [0001] The invention belongs to the technical field of powder metallurgy, and relates to a cutting tool material and a preparation method thereof, in particular to a powder metallurgy ceramic cutting tool material and a preparation method thereof. Background technique [0002] Powder metallurgy is an industrial technology for producing metal powder or using metal powder as a raw material, forming and sintering to produce metal materials, composite materials and various types of products. At present, powder metallurgy technology has been widely used in the fields of transportation, machinery, electronics, aerospace, weapons, biology, new energy, information and nuclear industries. Powder metallurgy technology has a series of advantages such as significant energy saving, material saving, excellent performance, high product precision and good stability, and is very suitable for mass production. In addition, some materials and complex parts that cannot be prepar...

AI Technical Summary

Problems solved by technology

Cemented carbide has high hardness, strength, wear resistance and corrosion resistance, known as "industrial teeth", used to manufacture cutting tools, knives, cobalt tools and wear-resistant parts, widely used in military industry, aerospace , mechanical processing, metallurgy, oil drilling, mining tools, electronic communications, construction and other fields, but compared with high-speed steel cutting tools, the fracture toughness of cemented carbide cutting tools is poor, which limits its use in certain processing fields (especially tapping processing) applications

However, the hardness and corrosion resistance of the above two materials are not enough in the harsh environment conditions such as ultra-precision and ultra-high-speed cutting, and need to be further improved.

[0004] Ceramic knives are a new material tool with high hardness and high temperature resistance, but they are brittle, low toughness, and difficult to process. Therefore, it is particularly important to manufacture a tool that can increase hardness without decreasing toughness. important