Grinding Issues and Solutions for PCD Cutting Tools

For PCD cutting tools, we are no stranger to them and have some understanding. PCD is an aggregate made from synthetic diamond powder burned by high temperature and high pressure, also called polycrystalline diamond. Like monocrystalline diamonds, it has high hardness and wear resistance. Let's take a look at the grinding problems and solutions for PCD cutting tools!

Difficulties in processing PCD cutting tools

Because of its high hardness, PCD material can easily generate high temperature during processing, and the high hardness also makes the grinding efficiency not good, so it is a difficult material to grind.

Grinding solutions for PCD cutting tools

Choice of abrasives:

To process PCD material, abrasives with higher hardness than PCD must be chosen, so only super abrasive wheels with diamond or CBN abrasives can be used.

Choice of binders:

However, most super abrasive wheels use resin binders, but ceramic binders are more suitable for facing PCD materials. Because when ceramic binders are sintered, more pores can be produced, and ceramics have good heat resistance and cutting sharpness, so they are not easy to generate heat and expand. When high hardness grinding is carried out, the grinding efficiency and precision will be higher than that of ordinary resin diamond wheels.

Therefore, the most suitable choice for processing PCD materials is to use super abrasive wheels with ceramic binders.

Recommended products for PCD cutting tools

PCD-specific ceramic diamond wheel

Suitable for rough, medium, fine, and ultra-fine grinding of PCD/CBN tools.

In addition to being used to grind PCD/PCBN/Monocrystal standard tools, it can also be used to grind custom polycrystalline diamond cutters such as PCD milling cutters, reamers, etc.

Characteristics and advantages

• The multi-porous structure of the abrasive layer makes the dull diamond fall off faster, which can prevent the vertical stripes on the workpiece from being produced and improve the surface quality.

• Perfect size tolerance control, can be used for CNC and manual grinders.

• Good self-sharpening, high grinding efficiency, high wear resistance, and less abrasive consumption.

• Using ceramic binders can make PCD/CBN tools have good surface smoothness and avoid edge damage, thereby reducing the scrap rate and improving the accuracy of PCD/CBN tools.

• The service life of ceramic bond wheels is more than 10 times that of resin bond wheels and can be easily repaired online.

Recommended repair tool for PCD cutting tools

Special repair wheel: a dedicated repair wheel for ceramic diamond wheels. It also uses ceramic binders, and its efficiency and life span are 50 times that of ordinary alumina repair wheels.

Above is the relevant content of the grinding problems and solutions for PCD cutting tools.

With the continuous expansion of the application field of PCD cutting tools, research on the blade grinding process of PCD cutting tools is becoming increasingly important. Future research results will also strongly promote the development and promotion of PCD cutting tools.