Introduction

In today's era of rapid development of manufacturing, superhard cutting tools have become an indispensable tool in the field of

 precision machining. With the advancement of materials science and the continuous improvement of machining requirements, 

traditional carbide tools can no longer meet the needs of modern industry for high-efficiency and high-precision machining. 

This article will explore in depth the technical characteristics, application advantages and how to choose the right tool solution 

for superhard cutting tools.

What are superhard cutting tools?

Superhard cutting tools refer to cutting tools made of materials with hardness close to or exceeding that of diamond, mainly including

 the following categories:

Polycrystalline diamond (PCD) tools: Made by sintering diamond powder under high temperature and high pressure, the hardness is 

second only to natural diamond

Cubic boron nitride (PCBN) tools: Made by sintering cubic boron nitride powder, especially suitable for machining hardened steel and 

cast iron

Chemical vapor deposition (CVD) diamond coating tools: Diamond film is grown on cemented carbide substrate by vapor deposition 

technology

The common characteristics of these materials are extremely high hardness (HV3000-9000), excellent wear resistance, good thermal 

stability, and can handle machining tasks that are difficult to handle with traditional tools.

Core advantages of superhard cutting tools

1. Excellent wear resistance

The wear resistance of superhard materials is 10-100 times that of cemented carbide, and they are especially suitable for machining 

difficult-to-machine materials such as high-silicon aluminum alloys, composite materials, and highly wear-resistant non-ferrous metals. 

Taking the processing of automobile engine cylinder blocks as an example, the life of PCD tools can reach more than 50 times that of 

carbide tools.

2. Extremely high processing accuracy

Due to the high hardness and low wear rate of superhard materials, the tools can maintain stable geometric shapes during long-term 

processing, ensuring the consistency of processing dimensions. In precision mold processing, PCBN tools can achieve surface roughness

 below Ra0.2μm.

3. Significantly improve production efficiency

Superhard tools allow higher cutting parameters (speed, feed, cutting depth), and processing efficiency can be increased by 3-5 times.

 An aviation company uses PCD tools to process titanium alloy structural parts, and the processing time of a single piece is reduced 

from 8 hours to 2.5 hours.

4. Reduce comprehensive processing costs

Although the initial purchase cost of superhard tools is high, considering their ultra-long life and reduced tool change downtime, 

the processing cost of a single piece can be reduced by 30%-60%. A bearing manufacturer uses PCBN tools to process hardened 

steel rings, saving an annual cost of 1.2 million yuan.

Typical application areas of superhard cutting tools

Automobile manufacturing: efficient processing of engine cylinders, pistons, and gearbox parts

Aerospace: precision processing of titanium alloy and high-temperature alloy structural parts

Mold industry: high-precision and high-finish processing of hardened steel molds

Electronics industry: cutting and forming of brittle and hard materials such as silicon wafers and sapphire

Energy equipment: wear-resistant processing of wind power gears and oil drilling components

How to choose suitable superhard cutting tools?

The following key factors need to be considered when selecting superhard cutting tools:

Processed material characteristics: hardness, strength, toughness, abrasiveness, etc.

Processing type: different process requirements such as turning, milling, drilling, and boring

Processing conditions: machine tool rigidity, cooling method, cutting parameter range

Quality requirements: dimensional accuracy, surface roughness, processing efficiency, etc.

Cost considerations: balance between initial investment and long-term benefits

It is recommended to cooperate with professional superhard tool suppliers to determine the optimal tool solution through trial 

cutting. Our company provides free technical consultation and sample services to help customers find the best processing solution.

Conclusion

Superhard cutting tools represent the highest level of modern cutting technology and are reshaping the processing methods of 

the manufacturing industry. With the continuous emergence of new materials and new processes, the performance and application

 range of superhard cutting tools will be further expanded. Choosing the right superhard cutting tools will bring significant competitive

 advantages and economic benefits to enterprises.

For more information about superhard cutting tools or to get a free sample, please visit our official website or contact your local sales representative.

Keywords: superhard cutting tools, PCD tools, PCBN tools, diamond tools, cubic boron nitride tools, efficient processing, difficult-to-process materials, tool life, precision processing, cutting solutions