Milling CMC ceramics
Fibre-reinforced ceramics consist of a ceramic matrix and a ceramic reinforcement fibre. This relatively new group of materials is often referred to as Ceramic Matrix Composites (CMC) in the technical literature. Ceramic fiber composites are used in plant construction, for furnace linings, pumps in the chemical industry or for charging racks for heat treatment. Recently, engine parts in the hot gas area have also been made from CMC materials in order to be able to achieve higher combustion temperatures.
CMC ceramics have an anisotropic and very often amorphous structure. This makes them very difficult to machine. They machine in powder form and do not absorb any heat. This is why PCD tools are mainly used in green and white machining. HUFSCHMIED has the twisted PCD end mills P91 and P92 in its range for this purpose. For 3D machining, we recommend the full-head PCD ball mills P110. For drilling, there are the full-head PCD drills P201.
Increased efficiency and process reliability
Through the use of Hufschmied Within the funded MAI Carbon Leading-Edge Cluster project MAI ProCut, tools with a geometrically defined cutting edge have succeeded in reducing the machining time for CMC ceramics by more than 80 percent compared to the previous grinding process. In cooperation with the German Aerospace Center (DLR), the corresponding turbine components could be processed cost-effectively for the first time.
If you have any questions about these materials and their machining, please contact our engineering. We look forward to finding an innovative solution to your machining task.
