The Sandvik Coromant CoroMill® 316 in action.
Cutting tool and tooling systems specialist Sandvik Coromant is extending its series of ceramic exchangeable milling heads with the introduction of a new ceramic grade for optimized performance in nickel-based alloys.
The latest, brazed-ceramic CoroMill 316 offers a more productive method for roughing in ISO S materials than standard carbide milling cutters.
With aerospace components manufactured from nickel-based alloys becoming increasingly prevalent, the demand for optimized cutting tools is growing. With this in mind, Sandvik Coromant has developed two solutions for shoulder and face milling of nickel alloy aero-engine parts.
“The ceramic substrate of the latest CoroMill 316 allows for a different cutting process than traditional solid carbide tools,” explains Tiziana Pro, global offer manager, solid end mills at Sandvik Coromant. “Our unique S1KU grade is purpose-designed for the superior machining of nickel alloys and is supported by a negative geometry that offers a tough cutting edge.
“In fact, the six-flute geometry delivers highly productive side milling operations, while the four-flute geometry boosts face milling. The CoroMill 316 is a perfect tool for difficult-to-reach applications or if you are looking for extra flexibility, thanks to the exchangeable head system.”
Ceramic tools retain their hardness at the high temperatures associated with milling heat-resistant super alloys (HRSAs). As a result, 20 to 30 times the speed can be achieved compared to solid carbide tools, delivering considerable potential for increased productivity. With the new, bigger head diameter available from D16-25 mm, it will be possible to reach these high cutting speeds with conventional machining centers (n = 10000-18000 rpm).
Beyond shoulder and face milling, the new end mills can also be used for pocket milling, helical interpolation, ramping and slot milling. The CoroMill 316 is part of the Sandvik Coromant Optimized Solutions offering in the company’s solid round tools range.
