As one of the important parts of brake device, brake disc is the last guarantee to ensure the safe and reliable braking of rail transit. More and more manufacturers us 

pcbn insert for turning brake disc, which can achieve high efficiency mass production.The advantages of CBN tool turning brake disc are mainly reflected in high efficiency, 

high quality and high precision.

CBN TurningTool performance for machining brake disc:

1) In the cutting process, the cutting tool has to bear great cutting force and impact force, so the cutting tool needs to have good strength and hardness;

2) The hardness of the cutting tool is generally higher than that of HRC65 in order to achieve high wear resistance of the cbn cutting insert;

3) Good heat resistance, high linear speed in the cutting process will produce a lot of heat, so the tool needs to withstand a good temperature.

The brake drum is mostly made of gray cast iron. The cemented carbide insert and ceramic insert used to process the brake drum in the past can not meet the production 

requirements because of their high time cost and material cost. In the past, the traditional coated cemented carbide or ceramic tool was usually used. Each tool tip can only 

process about 20-50 pieces, and the tool needs to be stopped and changed frequently, so the processing efficiency is low. Due to the excellent properties of CBN, PCBN turning tool

is becoming the first choice in the field of manufacturing.

LINKUT CBN PCBN tool has high density and uniformity, uniform hardness, excellent wear resistance and edge strength, which makes it have longer tool life in continuous cutting and 

intermittent cutting fields, and excellent material strength avoids tool collapse in rough machining of brake disc blank. It is an ideal CBN tool material for high-speed machining of brake 

disc at present.