EuroWire March 2025

Technology News

VNT nano split dies Ajex & Turner has been involved in the innovation of wire drawing and compacting dies and tools for the wire and cable industries since 1962. Its latest advancement, the VNT Nano Split Die, is described by the company as representing “a significant leap in technology”, and is claimed to offer benefits that directly address long standing industry challenges. The VNT Nano Split Dies are engineered with multi-layer coatings of nano crystalline diamond applied through vapour deposition. This process results in an exceptionally smooth surface, reducing friction and providing manufacturers with improved copper and aluminium utilisation. Designed for versatility, VNT Nano Split Dies accommodate sizes from 0.5 to 100mm, making them suitable for stranding, bunching and compacting applications. The reduced friction not only improves material flow but also ensures a bright surface finish, enhancing the aesthetic and functional quality of the final product. The stainless steel grade 304 casing prevents rust, extending the die’s lifespan and maintaining performance over time. Compared to traditional PCD and tungsten carbide dies, VNT Nano Split Dies are claimed to offer a 3-4 per cent improvement in raw material utilisation and a service life that is over ten times longer. This longevity eliminates the need for die polishing or re-cutting, ensuring consistent performance with no tolerance deviation throughout the die’s working life.

Split die from Ajex & Turner

For aluminium and copper compacting, the VNT Nano Split Dies can achieve production runs of approximately 12,000 to 15,000 cable kilometres, if optimal parameters are maintained. The technology simplifies wire break repairs and mitigates issues related to short service life, reducing down ti me and the frequency of die changes. The reduced friction from the diamond composite coating minimises the traction force required during the stranding process. This allows for higher stranding speeds compared to cemented carbide dies. Ajex & Turner https://ajexturner.com

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March 2025