Common materials for milling cutter

(1) High-speed tool steel (referred to as high-speed steel, front steel, etc.), divided into general-purpose and special-purpose high-speed steel. 

It has the following characteristics: a. The content of alloy elements tungsten, chromium, molybdenum and vanadium is relatively high, and the quenching hardness 

can reach HRC62-70. At a high temperature of 600 ° C, it can still maintain a high hardness. b. The edge strength and toughness are good, and the vibration resistance 

is strong. It can be used to manufacture tools with average cutting speed. For machine tools with poor rigidity, high-speed steel milling cutters can still cut smoothly. c. 

The process performance is good, forging, processing and sharpening are relatively easy, and knives with complex shapes can also be manufactured. d. Compared with 

cemented carbide materials, there are still disadvantages such as lower hardness, poor red hardness and wear resistance.

(2) Cemented carbide: It is made of metal carbide, tungsten carbide, titanium carbide and cobalt-based metal binder through powder metallurgy process. Its main features 

are as follows: a. High temperature resistance, good cutting performance can still be maintained at about 800-1000 °C, and a cutting speed 4-8 times higher than that of 

high-speed steel can be used for cutting. b. High hardness at normal temperature and good wear resistance. c. The bending strength is low, the impact toughness is poor, 

and the blade is not easy to sharpen.

We can see that the commonly used materials for milling cutters are high-speed tool steel and cemented carbide. In recent years, PCD milling cutters are also widely used. 

PCD milling cutters are more wear-resistant and have a longer product life. They are the preferred materials for most customers. PCD tools have the characteristics of high 

hardness, high compressive strength, good thermal conductivity and wear resistance, and can obtain high processing accuracy and processing efficiency in high-speed 

cutting.