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NEWS Company

WNT’s C900 High Feed Drills benefit from a Dragonskin performance upgrade


DCX1420 Dragonskin-coated inserts have been added to WNT’s drilling range, raising drilling performance even higher

The C900 High Feed Drill from WNT was already setting the benchmark for indexable insert hole machining performance and productivity, now with the addition of DCX1420 Dragonskin-coated inserts available, the standards have just been set higher.

The new Dragonskin DCX1420 insert grade, which has a CVD coating, has been developed specifically for use in the peripheral insert pocket of the C900 High Feed Drills from WNT. When used in conjunction with the existing PVD coated CCN1430 insert grade, in the centre insert position, tool life is extended and cutting speeds can be increased by up to 30 per cent. This combination of insert grades maximises each tool coating’s performance characteristics, with the CCN1430 having much greater toughness to better handle to low surface speed found in the centre of a drill, while the DCX1420 grade with its Dragonskin CVD coating has improved wear resistance allowing the higher cutting data to be achieved.

When using the new DCX1420 inserts in the C900 High Feed Drills cutting speeds in steel components can be as high as 390 m/min and 230 m/min in stainless steel, with feed rates up to 0.3 and 0.23 mm/rev respectively, subject to machining conditions, coolant supply and workholding. In addition to the new grade the diameter range of the C900 High Feed Drill has been extended to include drills of 12, 12.5, 13, and 13.5 mm diameter starting the series.

Continuing the changes to WNT’s drilling catalogue, the WNT Polydrill can now also benefit from the CCN1430 universal insert grade. This grade has been optimized for the drilling of steel, stainless steel and non-ferrous materials and users benefit from the insert’s universal approach, meaning greater flexibility and reduced stock of inserts, optimized performance in terms of toughness and wear resistance.

“These latest developments in insert drilling technology are part of WNT’s ongoing drive to reduce manufacturing costs for its customers, either through maximising cutting performance as with new grades such as DCX1420 or, improving general machining economics with developments such as those with the Polydrill system by extending use of our CCN1430 grades and simplifying there use,” says Tony Pennington, Managing Director, WNT (UK)

All of the latest cutting tool and workholding systems can be seen on the WNT stand at MACH 2016 (stand 5641)