Horn has announced the introduction of two new carbide grades for inserts used in its DAH82 and DAH84 high feed milling systems, enabling their use for machining a wider range of materials. The expansion gives customers the ability to choose grades best adapted to their applications.

The new SC6A grade is suitable for machining materials in the ISO M group (stainless steels) as well as ISO S materials (superalloys) as a secondary application. The new IG6B grade has been developed for machining the ISO P group (steels), while it is also suitable as a multi-purpose grade for other material categories, as is the pre-existing SA4B substrate.

The eight usable cutting edges of the sintered inserts offer a competitive price per cutting edge and hence economical machining. The positive geometry ensures a soft, quiet cut as well as good chip flow. The large radius of the insert's main cutting edge also promotes a soft cut and as well as an even distribution of cutting forces, ensuring long tool life.

Maximum cutting depth is ap = 1.0 mm (DAH82) and ap = 1.5 mm (DAH84). The DAH82 variant is available as an end mill and as a screw-in milling cutter in the following diameters: 20 mm (z = 2), 25 mm (z = 3), 32 mm (z = 4), 35 mm (z = 4) and 40 mm (z = 5), where z denotes the number of inserts. As a shell mill, it is available in diameters of 40 mm (z = 5), 42 mm (z = 5) and 50 mm (z = 6).

For diameters of 50 mm and more, the larger DAH84 system is used. The variants are available only as shell mills in the following diameters: 50 mm (z = 4), 52 mm (z = 4), 63 mm (z = 5), 66 mm (z = 5), 80 mm (z = 6), 85 mm (z = 6), 100 mm (z = 7) and 125 mm (z = 8). All tool bodies receive a special surface treatment imparting high strength and hardness for long-term protection against abrasive wear from chips.

www.phorn.co.uk