Solid carbide drills can be reground several times and are therefore in the diameter range from 6.8 mm to 20 mm economically well suited for use in steel construction. For larger drilling diameters, the KSEM modular drilling system of Kennametal with KSEM carbide cutting inserts is more suitable and cost-effective.
As a machine and tool specialist, Nenok is happy to offer you suitable drilling systems as an alternative, e.g.
The KSEM, HT800 WP and Multiplex carbide drill bodies are screwed into a tool holder and replaced when worn. However, these carbide drill bodies can only be reground to a limited extent.
The carbide material has a very high wear resistance (hardness) but is less ductile than HSS steel. If used improperly it is more delicate than regular HSS inner coolant drills or KSEM carbide drills with KSEM cutting inserts. The use of solid carbide drills is therefore only suitable for use on modern drill lines with stable material clamping and high drive power.
Solid carbide drills made of the composite material carbide offer very high cutting performance even without a special coating due to their extremely high wear resistance. However, by coating the solid carbide drills, these already good wear values can be significantly improved again.
The Hartner solid carbide drills have a modern Fire coating. The breath-thin Fire coating is a TiAlN/TiN multilayer coating. It increases the wear resistance and the thermal resilience of the carbide. You can recognize the Fire coating on our solid carbide drills by the violet colour.
In the video you can see some examples of the use of solid carbide drills when drilling flat steel and sheet metal. The Kaltenbach KF2506 and Voortman V320 flat steel drill lines and sheet metal processing centres shown in the video have the appropriate stability and correspondingly high drive power with high drill speed, high feed rate and torque. Only with these high-performance drilling units can the drilling performance of solid carbide drills also be exploited economically.
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