Solid carbide drill

Solid carbide drill

July 21, 2020

Kennametal Inc.

The Kennametal HPX solid carbide drill provides next generation performance for steel applications, setting the bar for tool life and productivity. Designed to quickly and efficiently punch holes up to 8xD in any ISO-P steel material, the HPX drill provides up to 2x the tool life and 3x the productivity compared to competing products, even in dry or minimum quantity lubrication (MQL) applications.

The difference is in the design. Steels are used for a wide variety of automotive, commercial, and industrial applications, often in production volumes where maximum tool life and throughput is critical. Yet steel creates a high degree of mechanical loading during drilling operations resulting in forces that lead to rapid tool wear and chipping of the tool´s more vulnerable corners.

Kennametal has eliminated this failure point by applying a small corner chamfer and straightening the HPX drill´s cutting edges. Together with the rounded margin lands running down the length of the flutes, this serves to stabilize the drill while reducing friction.

From its unique point design to its proprietary, multiphase coating, the HPX drill´s innovative design helps manufacturers master holemaking operations in steel.

Built-up edge is another common problem when drilling alloy steels. The HPX drill´s straight cutting edge helps eliminate some of this, but the real clincher is the drill´s optimized edge preparation. This gentle hone further reduces the friction that leads to built-up edge, as do the tool´s highly polished flutes.

Couple that with a carbide grade designed specifically for steel – KCP15B – and a proprietary multilayer AlTiN coating, and the HPX drill sets a new standard for tool life in high-volume ISO-P drilling.

Manufacturers wishing to turn off their high-pressure coolant pumps in favor of dry cutting or MQL systems, efficient chip evacuation along with low-friction cutting is a must, and the HPX drill delivers on both counts. In fact, the drill comes equipped with a leakproof MQL interface that meets DIN 6535 and 69090-03 standards – no more special orders or in-house modifications.