With the Drivox·tec DD170 Supreme solid-carbide drill, Bromsgrove-based
Walter GB Ltd, says it has introduced a premium problem-solver that is optimised for holemaking in steel and cast iron.
The primary improvement is the new Krato·tec multi-layer coating, which Walter has already introduced successfully in other drill families, with tool life improvements in the region of 50% and more, depending upon the specific application.
The revised point geometry of the solid-carbide Drivox·tec DD170 Supreme hole-making series incorporates a larger clearance angle on the internal side than on the external side, along with a raised drill point for improved positioning accuracy. Furthermore, these geometry revisions reduce axial forces and increase the hole quality, precision, and machining performance.
The patented groove design has also been optimised and now features a flatter entry point that improves process stability, especially when machining soft materials (like mild steel) as it minimises material sticking and improves swarf evacuation. Walter has also increased the number of flutes, now with 12 grooves instead of eight, allowing the DD170 Supreme to be reground more frequently.
Walter concluded: “The new range demonstrates high process reliability in demanding applications such as cross holes and inclined exits, thanks to the high wear protection of the Krato·tec coating, which makes the DD170 Supreme the new benchmark for high-performance solid-carbide drilling. Diameters range from 3 to 20mm, and special tools and dimensions are available via Walter Xpress.