Tungaloy has upgraded its TDX drill series of indexable insert drills. This range of drills for machining holes from 12 to 54 mm diameter now has the new AH725 insert grade added to deliver the highest speed production levels with maximum performance when machining steels and stainless steels, the company said.

Available with drills in 2XD, 3XD, 4XD and 5XD, the Tungdrill Twisted utilizes Tungaloy's new TDX concept that is designed to allow stable and efficient machining by using four corners of the parallelogram shaped inserts. The drill body also incorporates the TDX concept that works in conjunction with the insert geometries to further enhance stable cutting. As a result, quality balance can be obtained and chatter can be constrained to deliver quality surface finishes inside the hole, said Tungaloy.

"To improve swarf evacuation the Tungdrill Twisted has two twisted coolant holes in the drill body to increase the fluid flow by 50%, further improving surface finish and chip removal," said a company spokesperson. "The combination of innovative new insert and drill designs combined with the twisted coolant holes promote swarf evacuation and improve surface finishes, tool life and productivity. The drill body also guarantees a long tool life due to its specialized drill body coating that is hardened to improve rigidity.

"The new AH725 insert for the Tungdrill Twisted is a PVD coated grade that incorporates Tungaloy's special surface technology (PremiumTec) that improves resistance to chip welding and insert edge chipping. The newly improved coating layer features great adhesion strength between the coating and substrate. This works in conjunction with a well-balanced micro alloy substrate that is effective for plastic deformation resistance and improves toughness.

"The AH725 insert improves wear resistance when high-speed machining stainless steel, and it also delivers chip control and prevents burrs with the combination of a twisted drill design, high powered coolant flow and innovative insert geometries. For the Tungdrill Twisted with AH725 grade, Tungaloy has developed three insert types: the DJ, DS and DW types.

"The DJ type is a general-purpose chipbreaker usable for almost all applications. It features low cutting forces and allows stable drilling with its deeply formed chip groove that performs improved cutting action and effective chipbreaking. The DS type has an entirely new rake face design, strengthened corner and sharp cutting edges that provide improved chip control for gummy materials such as stainless steels and low carbon steels. The DW type incorporates a new wiper design, extremely strong insert corner and chipbreaker for high feed machining. In comparison with conventional inserts, this chipbreaker allows higher feeds and produces quality surface finish.

"The three chipbreakers for the new AH725 grade make the new insert suited to the machining of low carbon steel, stainless steel, carbon steels, cast irons and aluminum alloys."

For more information contact:

Ryan Cox

Tungaloy America, Inc.

3726 N. Ventura Dr

Arlington Heights, IL 60004

888-554-8394 / 630-227-3700

rcox@tungaloy.com

www.tungaloyamerica.com