Ceramic cutting material
- 3. January 2020
- Posted by: Andreas Janisch
- Category: machining
Ceramic cutting material is temperature resistant up to 1200°C and allow cutting speeds up to 1100 m/min. It is produced by sintering or hot pressing. Aluminium oxide and silicon are used as starting materials.
Cutting ceramics are relatively brittle and not suitable for machining aluminium and aluminium alloys.
They are characterised by high wear resistance, low diffusion tendency and high oxidation resistance.
However, they also have low thermal conductivity and are sensitive to impact and thermal shock, which is why no cooling lubricant should be used.
Due to their high fracture sensitivity, cutting ceramics are mainly used for finishing as well as for post-processing at high cutting speeds when turning series and large series components.