After six years of research and development, Cerbide has introduced a polycrystalline cemented carbide material called "Cerbide". Unlike conventional cemented carbides that bond WC particles together with cobalt or other binders, polycrystalline cemented carbide (PWC) does not use a binder, but rather a simple material of pure cemented carbide.

The lower melting point of cobalt and other binders will reduce the hardness and wear resistance of cemented carbide, which is the weakest link of traditional cemented carbide materials. Since Cerbide polycrystalline cemented carbide does not contain a binder, its hardness is greatly improved, it is said to be as high as 2400 HV (95.5 HRA), and the wear resistance is many times higher than that of conventional cemented carbide. On the other hand, because it does not contain a binder that enhances the toughness of the material, Cerbide has improved brittleness and reduced toughness, so it is not suitable for processing all workpiece materials.

When the material and processing technology of the workpiece to be processed is suitable (such as high-speed cutting of titanium alloy), Cerbide's good thermosetting properties at cutting high temperatures make it excellent cutting performance. The hardness of traditional cemented carbides is greatly reduced at high temperatures, while the thermosetting properties of Cerbide remain essentially unchanged at high temperatures.

Since Cerbide itself has an extremely high hardness, the coating that is most suitable for it is a diamond coating. On the surface, since Cerbide does not contain a cobalt binder, it seems that the matrix will be difficult to hold the diamond coating (because the cobalt in the cemented carbide is usually etched away, which facilitates the adhesion of the diamond to the cemented carbide grains) . But it is not the case. The Cerbide matrix has superior ability to hold coatings (especially CVD diamond coatings) than any existing cemented carbide material. Cerbide sent a polycrystalline carbide tool to a diamond coating company to see its surface coating (because it does not contain any cobalt). In order to determine the adhesion of the coating, the technician performed a destructive test on the coated tool but did not damage the diamond coating on the tool. The technicians then attempted to perform destructive tests on the Cerbide matrix itself, but their usual tests for damage to the carbide inserts only polished the Cerbide surface.

Of course, the diamond coating adds to the cost of the Cerbide tool (which sells for about three times the price of a conventional carbide tool). To reduce costs, North America's Cerbide is working with coating companies to develop a thicker diamond-like coating. This coating is comparable in hardness to the diamond coating, but costs only 25% of the diamond coating.

Titanium diboride coatings are very effective when the lubrication performance of the tool is high. This coating gives the tool surface a very smooth surface.

Currently, Cerbide's cutting inserts and end mills for machining a wide range of workpiece materials are commercially available and will eventually form a series of grades. In addition, the company is also preparing to enter the wear parts market.

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