Ceramic Inserts Application

For heavy machining the insert size is normally above ic 25 mm 1 inch.

Ceramic inserts application.

A cermet is a composite material composed of ceramic cer and metal met materials. With a larger insert size the stability is better. The surface of these inserts is very smooth allowing the chip to flow easily and prevent built up edges. Made of ceramic particles bonded together with a nickel binder these tools are capable of running at higher speed than carbide tools and are much more wear resistant.

Cermet inserts can excel at holding the precise tolerances and finishes that often characterize the work on these machines. High speed continuous turning of cast iron without coolant. Ntk offers many types of ceramic cutting tool materials silicon nitride based alumina based and whisker based in a variety of geometries to meet customer demands. There are significant process considerations that shops should examine carefully in order to realize performance and tool life expectations from ceramic inserts.

Pettay adds a fifth application that may become more prominent over time. Select insert size depending on the application demands and the space for the cutting tool in the application. Here s a look at some of the ways they are used. Specifications and application table spk type iso material group machining technique area of application din iso 513 01 10 20 30 40 applications p k h t m g mixed ceramic sh 2 cm k10 sh 4 cm k10 oxide ceramic sn 60 ca k10 sn 80 e ca p20 sn 180 ca k15.

Cermets limited ability to withstand coolant is a disadvantage only where coolant is used. A cermet is ideally designed to have the optimal properties of both a ceramic such as high temperature resistance and hardness and those of a metal such as the ability to undergo plastic deformation the metal is used as a binder for an oxide boride or carbide. When finishing in many cases the size can be reduced. Ntk s premium ceramic grades ensure the user higher productivity.

Successful application of ceramic inserts applying ceramic inserts is not a simple substitution of one cutting tool material for another. Ntk cutting tools howard concurred that ceramic inserts are primarily cvd coated but the coatings themselves have a limited effect on overall performance. All of the grades show superior high temperature hardness heat resistance and chemical stability. Tz120 ceramic grade with high strength and excellent wear resistance by adding zro2 to al2o3 with high oxidation resistance.

Pdf metric pdf imperial features. Ceramic inserts for high speed turning of cast iron.