Nano Diamond Coated

3 key points of Vassena's new nano-diamond coated dies

Vassena Filiere has recently introduced a new technology to its range: nano-diamond coated dies (NDCD) also for bars and tubes up to a maximum diameter of 60 mm. These dies offer wire manufacturers significant advantages over traditional tungsten carbide dies. Let's explore their key strengths.

Nano-diamond coated dies: features and benefits

The nano-diamond coating is applied through Chemical Vapor Deposition (CVD), which gives the die exceptional hardness, wear resistance, and surface finish. This results in greater durability, improved wire quality, higher drawing speeds, and heat resistance. These features make it ideal for drawing both carbon and non-ferrous metal wires.

 The new Vassena NDCD series is available in diameters from 0.40 to 60 mm for wires, bars, and tubes. The company uses top-quality materials, including those from Hyperion, a long-term partner of over 30 years. Production has been moved to a dedicated facility where every process is closely monitored and controlled. Moreover, Vassena's NDCD dies can be customized according to the client's technical specifications.

 Enhanced hardness

The diamond coating allows these dies to reach a hardness level of 10,000 Vickers. In comparison, tungsten carbide dies, commonly used in the industry, are significantly softer and less resistant. The diamond series dies are thus ideal for drawing medium carbon wire and non-ferrous materials such as copper, brass, aluminum, and titanium.

 Extended durability

The increased hardness of Vassena's dies also makes them incredibly durable. It is estimated that NDCD dies can last up to 30 times longer than tungsten carbide dies. This represents a substantial improvement, traditionally only seen with non-ferrous and low-carbon content materials.

 Reduced friction

An additional benefit of nano-diamond coated dies is the significant reduction in the coefficient of friction during extrusion. This results in less die wear, lower lubricant consumption, and reduced energy requirements for the entire process.

The nano-diamond coating not only enhances the overall efficiency of the wire drawing process but also reduces operational costs. For this reason, Vassena has integrated this technology across its entire product range, including the flagship VG402R dies with pressure bushes.