Applications for diamond coatings explained

Graphite electrodes, dental implants, sporting goods, lightweight components for automotive or aerospace, punches and dies – diamond coatings are used in many different applications and materials.

CemeCon offers solutions for all cases to help users achieve the best results.

Würselen Graphite, CFRP and GFRP, zirconium oxide, hypereutectic aluminium, other non-ferrous metals and carbide – the list of possible applications for diamond-coated tools is even longer than the list of machinable materials. They are used in the machining of components for aircraft and classic automotive construction as well as for e-mobility. In addition, they are also used for the manufacture of sports articles or in dental technology.

In tool and mould making, there are various areas of application: in the machining of graphite electrodes, as well as in the milling of carbide.

The basis of every CemeCon diamond coating is the coating material. With different coating materials, CemeCon has the right solution for every application and thus also for every tool.

But what are the differences between the diamond coating materials? Diamond is diamond, after all? Manfred Weigand, product manager round tools at CemeCon, explained: “That's not quite true. One difference, for example, lies in the morphology. Depending on the coating material, the crystal structure and size differ. In addition, our diamond layer materials, the so-called multilayers, always consist of several layers. The number of layers varies from 2 to over 20. Finally, the topography, i.e. the surface, also plays a central role. Smooth, smoother, smoothest – the application determines this property.”

Especially with diamond, adhesion is crucial. Thus, the choice of the suitable carbide as the carrier of the coating deserves special attention. The CemeCon experts know exactly what needs to be taken into account here and are happy to provide manufacturers with advice and support in advance. Depending on the carbide grade and coating material, CemeCon then selects the appropriate preparation. There are different gradations from gentle to intensive. This gives the tools the right preparation for optimum adhesion of the coating.

As with HiPIMS, the coordination process for the premium coating does not end with the suitable coating material. Here, too, CemeCon adjusts the variables as usual until the perfect result is achieved: preparation for optimum adhesion, coating thickness specifications including tolerances, and final inspection with documentation. For diamond coatings, CemeCon also offers tool manufacturers the option of precision coating. In this case, the customer receives a coating with the final dimension that they specified within the required tolerances – including the corresponding measurement report.

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