Walter is increasing the diameter range of its Color Select WKK45SC high-speed range for Xtra·tec® B401x point drills.
The new indexable inserts will be available in diameters of up to 37.99 mm, giving users the opportunity to buy all their inserts – even those over 31 mm in diameter – from a single source. This means that the range specially developed by Walter for machining cast iron can now be used to drill all holes from 12 to 37.99 mm in diameter at hole depths up to 7 × Dc and holes from 18 to 25.80 mm in diameter at hole depths up to 10 × Dc.
The typical properties of cast iron, such as brittleness, an irregular structure, inclusions and crusty surfaces, exert a great deal of stress on the cutting edges, which results in high operating temperatures. The substrate, coating and geometry of the P6005-WKK45C insert work to counteract this. Its multilayer PVD coating combines wear-resistant layers with supporting layers and ensures that the ratio between hardness and toughness is optimised to suit ISO K materials as best as possible. This layer also provides an excellent shield against heat. The red ISO K coating used on the Color Select WKK45C range not only indicates the insert's main area of application but also shows the amount of wear it has sustained. Up to 100% more power on the cutting edge and
outstanding resistance to wear and high temperatures, not to mention great process reliability when drilling and withdrawing from deep holes, are further advantages that users of the new insert sizes can now benefit from – even at very large diameters.