PVD-Coated Grades Increase Tool Life of Exchangeable-Tip Drill

The CoroDrill® 870 exchangeable-tip drill from Sandvik Coromant (Fair Lawn, NJ) saves time and reduces cost per hole in the intermediate hole-tolerance range of H9-H10. It can be tailored to best support applications through a selection of diameter, length, step or chamfer possibilities, and is available in a diameter range from 10 mm to 33 mm (0.394 in to 1.299 in) and a depth capacity from 3xD to 12xD. Now three new grades for this popular exchangeable-tip drill have been released: GC4344, GC3334 and GC2334 have been developed to offer significant tool life improvements and more predictable wear patterns, all while maintaining the high penetration rates and productivity for which the concept is renowned. These new grades are produced with Zertivo™, a unique PVD (physical vapor deposition) production technology that amplifies the already exceptional benefits of the grades, maintaining the advantageous properties of its predecessors and bringing out significant improvements when it comes to properties such as edge line security, chipping resistance and overall wear resistance.

“Drilling is often carried out late in the manufacturing process, with previous operations already having enhanced the initial component’s value,” noted Johan Ekbäck, the global product manager at Sandvik Coromant. “The drilling application, although seemingly simple, is a complex operation that can lead to significant consequences if the tool malfunctions or is run beyond its capacity. That is why, when it comes to wear, users want to keep their results predictable and consistent, securing a drilling process that can be relied on. In releasing these new grades, our ambition has been to provide them with increased tool life and reliability in their drilling operations.” Available in various geometries, the latest grades are highly versatile and cover applications in most ISO materials, although they are optimized for ISO P (steel), ISO M (stainless steel) and ISO K (cast iron). All grades are PVD-coated using Zertivo and are designed to deliver specific enhancements related to common wear issues in drilling.

Sandvik Coromant US, 1702 Nevins Road, Fair Lawn, NJ 07410-0428, 201-794-5000, Fax: 1-201-794-5157, www.sandvik.coromant.com.