Ringwood-based
Horn Cutting Tools Ltd has introduced two new carbide grades for inserts used in its DAH82 and DAH84 high-feed milling systems, thereby extending the range of materials that can be machined. 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 (super alloys) as a secondary application. Meanwhile, the new IG6B grade has been developed for machining the ISO P group (steels), and 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, as well as an even distribution of cutting forces, which ensures long tool life.
Maximum cutting depth is ap = 1.0mm (DAH82) and ap = 1.5mm (DAH84). The DAH82 variant is available as an end mill and as a screw-in milling cutter in the following diameters: 20mm (Z = 2), 25mm (Z = 3), 32mm (Z = 4), 35mm (Z = 4) and 40mm (Z = 5), where Z denotes the number of inserts. As a shell mill, it is available in diameters of 40mm (Z = 5), 42mm (Z = 5) and 50mm (Z = 6).
For diameters of 50mm or more, the larger DAH84 system is used. The variants are available only as shell mills in the following diameters: 50mm (Z = 4), 52mm (Z = 4), 63mm (Z = 5), 66mm (Z = 5), 80mm (Z = 6), 85mm (Z = 6), 100mm (Z = 7) and 125mm (Z = 8). All tool bodies receive a special surface treatment imparting high strength and hardness for long-term protection against abrasive wear from chips.