What are diamond and CBN pastes?

The quality of surface treatment of parts that we subsequently use in many areas of our lives plays an important role in industry and various technical aspects. We want to say that it is this process that determines the wear resistance, durability and appearance of products that we can later purchase and use. To achieve perfect smoothness and cleanliness of the surface, specialists use abrasive materials. Most likely, you have already heard about them somewhere, and maybe even used them, just did not pay attention. Among them, one of the leading places is occupied by diamond and CBN pastes.

The most effective tool for grinding, finishing and polishing, which has not lost its popularity and relevance for many years. Further, in this article we will tell you what CBN and diamond pastes are, so that you better understand which paste you may need.

Diamond paste – what is it?

An abrasive mixture consisting of finely dispersed diamond grains and, usually, a viscous base is called – diamond paste. The base is usually water, oil, or mixed. In general, the paste is a mixture that people use to polish smooth surfaces and sharpen metal blades. If you were wondering why the paste polishes so gently, then we have the answer for you. Finely dispersed diamond powder is combined with an abrasive inside the paste. It is he who gives such a cool effect. As for the use, everything is simple here – metal surfaces, ceramic products, glass and other mineral products.

We also want to emphasize that the paste can not only polish and grind. It also cleans the surfaces of the materials that were mentioned above. Small grains cope well with this task.

Advantages of this super paste:

Are you racking your brains on how to polish a surface of a non-standard shape or size and are already halfway there, giving up? Don’t worry, because this paste will easily solve this problem.
Do you want to polish hard-to-reach surfaces, but are tired of searching for the perfect tool for this – you have come across our article in time. Thanks to the liquid composition of the diamond paste, you will be able to achieve an amazing result, namely a smooth and even coating over the entire surface.
The consistency of the paste will also surprise you, because it helps to smooth out all scratches and achieve the best result.
The paste is convenient to use on hardened steel, stainless steel or even titanium parts – the result is always stable. Believe me, we know what we are talking about.

CBN pastes – what is it?

An abrasive mixture that includes CBN (cubic boron nitride) is CBN paste, which is logical in principle. CBN is the main grinding component, which is a synthetic material. An interesting fact is that this component was created specifically for industrial purposes. It has such properties as high resistance, excellent heat resistance and chemical inertness to iron-containing materials.

If we talk about hardness, then CBN is second only to diamond. But this paste has unique properties that make it indispensable for processing super hard metals, especially at high temperatures. It is widely used for finishing, fine grinding and polishing. We are talking about such materials as high-hardness tool steels, hardened steels and iron-based alloys, nickel, cobalt alloys, ceramics, carbides and ferritic materials. CBN paste is especially important where the processing temperature may exceed the thermal resistance limits of diamond, or in cases where diamond enters into a chemical reaction with the material being processed.

Advantages of CBN pastes:

The first advantage will be the high efficiency of processing hard materials. CBN does not wear out very quickly, so you have the opportunity to work longer and with better results.
The next, no less significant, advantage is heat resistance. The paste does not lose its abrasive properties at high temperatures, which plays an important role in the processing of hardened steels.
The paste copes with its task well, so you will get a well-polished surface at the output.

Diamond and CBN pastes – key differences

And here the question arises – which paste to choose? Diamond or CBN? They are both great, but it all depends on what exactly you are working with. These pastes are the two most common types of abrasives used for grinding, finishing and polishing various materials. Both types are endowed with their own unique properties, which make them very necessary and popular. So let’s consider the differences between them in order to be able to make the right choice.

Diamond pastes are based on natural or synthetic diamond, which is currently the hardest known material. With their help, you can perform extremely fine polishing with a high degree of surface cleanliness. Due to its hardness, diamond paste is perfect for processing hard surfaces. We are talking about glass, ceramics, carbides, stones, non-ferrous metals. These pastes are often used in jewelry, the optical industry and in the manufacture of micro-tools. However, there are some limitations, as diamond is prone to chemical reactions with certain materials and does not tolerate very high temperatures well.

CBN pastes are based on cubic boron nitride, which is inferior in hardness to diamond, and has higher heat resistance and chemical stability. CBN does not react with iron and retains its abrasive properties at high temperatures. This makes it an excellent choice for processing hardened steels, tool alloys, HSS, heat-resistant nickel and cobalt alloys.

There are also some differences in the polishing quality provided by the two types of pastes. Diamond pastes are able to provide a mirror finish, while CBN pastes are more focused on technical results. Yes, they may be slightly inferior in shine, but they guarantee stability and high precision during processing.

Choose diamond and CBN pastes from a reliable manufacturer

Diamond and CBN pastes are indispensable tools in the field of high-precision surface treatment, which allow you to achieve exceptional grinding and polishing quality. If you are looking for a proven polishing agent, we have several options that have proven themselves in working with even the most demanding materials. If you still have questions, please contact us at +38 050 889 82 89 or kdtu-1@ukr.net. Our specialists will be happy to provide you with all the necessary information and help you with the choice, because we want every customer to receive the best product.