Industry News

Insert grades suit cast iron Featured

The portfolio of ISO tools for milling operations from Mapal has been extended with the addition of a range of insert grades for machining cast iron materials such as GJL, GJV and GJS. Mapal’s latest inserts are said to provide a significant increase in tool life while also facilitating higher cutting speeds.

Mapal’s latest inserts are based on a completely new series of carbide substrates, the structures of which have been modelled to provide an optimum relationship between ductility and wear resistance.

Maximising the scope of the grades, Mapal has engineered the inserts to correspond with existing 75° face-milling cutters as well as the company’s 90° tangential shoulder-milling tools. In addition, the inserts can also be allocated to 45 and 88° shoulder-milling tools with alternately mounted tangential inserts. 

The flexibility to work with the numerous tool-holder geometries is afforded by the availability of sintered tangential inserts with four, six or eight cutting edges that are suitable for operations from heavy-duty rough machining through to semi-finishing.

Included in the series are three PVD-coated carbides and two CVD-coated grades. The PVD coating consists of an optimised TiAlCrN material with very fine layer structuring, while the CVD coating is based on an MT-TiCN featuring an alpha-Al2O3 top coat. This layer combination offers high wear resistance and good thermal stability.

A special post-treatment has been developed for both the PVD and CVD coating to ensure an extremely smooth surface that improves chip flow and evacuation.

For further information www.mapal.com

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