Ceramic Inserts For Hard Turning

Applying ceramic cutters is different but it s not alien.

Ceramic inserts for hard turning.

But don t let the high cost of inserts scare you off from the hard turning process as the high tooling costs are quickly offset by reductions in processing time and change over time. Cubic boron nitride cbn grades are the ultimate cutting tool material for hard part turning of case and induction hardened steels. Use optimized cbn grades for hard part. For many jobs in the 45 to 65 rc hardness range in which grinding was historically the process of choice hard turning and hard milling with ceramic insert cutters are finding increasing acceptance in shops.

Features of ceramic inserts. Flank wear also commonly appears in hard part turning and typically indicates a need to reduce speeds. Superior heat resistance enables high speed machining aluminium oxide ceramic. Kyocera s ceramic inserts are designed to resist oxidation and maintain hardness at elevated temperatures.

With a properly tuned hard turning process these inserts are second only to grinding in terms of holding diameter tolerances. The life of cbn inserts typically is more predictable than that of ceramic inserts. However the cbn pcbn and ceramic inserts can be expensive especially when compared with the relatively low costs of grinding wheels. Ceramic inserts are recommended for turning of carbon and alloy steels 38 64 rc or rough finish turning of cast iron.

Hard part turning offers improved flexibility better lead times and higher quality. Predictability of tool life is extremely important in hard part turning said geisel. For steels softer than approximately 55 hrc use ceramics or cemented carbide inserts.