Carbide Drills

Carbide drills for drilling rigs

Carbide drills from Nenok for economical drilling in steel construction, steel trade, plant construction and metal construction

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Carbide drill definition

All composite materials that are composed of brittle-hard carbide particles (predominantly tungsten carbide and possibly other carbides such as titanium carbide or tantalum carbide) and a suitable, tough binding metal (cobalt) are classified as carbide. Tungsten carbide is therefore a generic term for a highly versatile and extremely efficient group of materials. As the associated manufacturing process is referred to as sintering (fusing two or more materials pressed into powder form under vacuum and high pressure), these carbide materials are also known as sintered materials.

The outstanding property of carbides is their great hardness combined with toughness, good wear resistance and high heat resistance. Due to these positive material properties, carbide drills have a significantly longer service life than HSS coolant drills. This long service life can be increased even further with a modern surface coating.

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The generic term carbide drill bits covers twist drills with carbide cutting inserts or carbide cutting body inserts as well as solid carbide drill bits. Depending on the application and required drilling diameter, you can choose between a solid carbide drill bit or a carbide drill bit with cutting inserts.

In addition to solid carbide drills, three high-performance drilling systems with carbide cutting inserts and internal cooling dominate the market for machining profiled steel and flat steel.

• KENNAMETAL KSEM carbide drill bits

The KENNAMETAL drill system impresses in steel construction with the carbide drilling tools from the KSEM, Ken-TIP, KSEM PLUS and KenTIP FS product ranges

Our product range for Kennametal KSEM

• Guehring HT 800 carbide drill bits

The Guehring HT 800 WP interchangeable insert drilling system carbide tool tips is suitable for drilling in the diameter range from 11.00 mm to 40.00 mm as an interchangeable insert system.

• Carbide drill Hartner Multiplex HPC

The Hartner Multiplex HPC interchangeable insert drilling system is ideal for carbide drilling in steel construction and the steel trade for the diameter range from 10.00 mm to 40.00 mm

The selection criteria for the use of a solid carbide drill bit or a drill bit with carbide cutting inserts depend very much on the respective application, machine stability, machine performance, cooling, diameter range and procurement costs.

Carbide drills with replaceable cutting body or cutting insert

Carbide drills can only be used when drilling on modern high-performance drilling machines. The carbide drills with cooling channel and replaceable cutting bodies are ideally suited to the latest drilling machine technology for processing flat steel and sectional steel. Thanks to the extremely high cutting performance of modern carbide drilling technology, extremely short drilling cycles and exceptionally good cost-effectiveness are achieved. Nenok's standard range includes carbide drills with replaceable cutting bodies in diameters from 12.5 mm to 40 mm. Use with an SK 40 tool holder is possible up to a diameter of 32 mm. Beyond this, a larger tool holder is required due to the high power transmission.

Example of the use of a carbide drill bit in flat steel machining on a modern plate machining center:

Solid carbide drills

As solid carbide drills are fully made of wear-resistant hard metal they can be reground many times. Another advantage is the composition of the tool in one piece. The standard program of nenok tools offers solid carbide drills with cooling channel and FIRE coating with diameters from 6,5 mm up to 20 mm.

Carbide drill reprocessing

The reprocessing of used carbide drills is economically depending on the degree of wear. The solid carbide drills are reground by specialist companies and, if possible, receive a new surface coating. When used without a new surface coating, the performance is limited due to the lack of coating on the cutting edge of the tool compared to a new drill. Cutting body inserts made of carbide (KSEM series) can only be reground once or twice, these also receive a new surface coating if possible.