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What can ceramic inserts be used for?
As is well known, there is a new type of composite material cutting tool - the ceramic blade. So, what materials can the ceramic blade process?
Ceramic inserts are widely used in the field of metal cutting due to their excellent high-temperature stability and wear resistance. Compared with carbide blades, they can withstand cutting temperatures up to 2000℃ (while carbides soften at 800℃), making them more suitable for high-speed and even ultra-high-speed cutting. 2 However, due to their high brittleness and weak impact resistance, they are not suitable for intermittent cutting or heavy-load rough machining.
Ceramic inserts are particularly suitable for processing hard and high-temperature resistant materials that are difficult to machine, such as gray cast iron, ductile iron, hardened steel (with HRC above 40), and high-temperature alloys (such as Inconel 718). Under high-speed cutting conditions, they can significantly improve efficiency and surface quality.
When choosing ceramic inserts, one should select the type based on the specific processing materials and process conditions:
Alumina-based ceramics: Suitable for fine processing of steel parts and cast iron;
Silicon nitride-based ceramics: More suitable for intermittent cutting of cast iron and high-temperature alloys;
Metal ceramics (Cermet): Suitable for semi-finish/fine processing of steel parts with HRC40 or below, with high surface finish.
In practical applications, it is necessary to ensure good edge quality and optimize cutting parameters (such as feed rate, rotational speed, cooling method) to achieve the best performance .
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