EuroWire March 2019

Technology News

Flexibility for the double-twist bunching machine

The rod PDH dry coating and wire lubrication system is rapidly improving the current state of rod preparation and wire drawing, enabling process users to achieve substantial cost savings in the production of drawn wire, including spring wire, PC strand wire, plating wire, cold-heading wire, CO 2 welding wire, etc. The PDH system greatly enhances wire drawing performance by eliminating dramatic issues related to friction heat, benefitting from the unique, fully controlled, extremely sensitive five-way interaction between the five most important lubrication parameters, including lubricant pressure steplessly adjustable up to 350 bars/5,000psi, viscosity, thermal stability, lubricant melting temperature and lubricant full-film thickness. All these variables are continuously and automatically controlled, all communicating together, enabling controlled fusion of borax-free EXTENSIVE research and the continuous improvement of existing technology (over 75 machines of this kind are currently in production) have improved the Sampsistemi double-twist bunching machine BM 1250, which is designed for reels with a flange diameter in the range of 630mm to 1,250mm and a total weight of 4,500kg when filled (in the case of copper strand). Main features include: • Large flexibility range of working section (1 to 100mm²) • Suitable for stranding copper and aluminium wires and laying-up insulated cores • Open bows with carbide or ceramic eyelets or ceramic-coated rollers • High performance (up to 2,000 tpm and linear speed 300m/min depending on process) • Improved wire quality due to large pulley diameter • Optimal tension on the strand control due to built-in dancer, with electronic regulation via operator panel • Reduced preventive maintenance due to AC and brushless motors • HMI 10" colour touchscreen for line control The machine is positioned inside a hut-shaped protection that ensures

▲ ▲ The BM 1250 from Sampsistemi

wireless safety integrated communication system. The Sampsistemi manufacturing programme also includes a pre-twister, an equaliser and a wide range of dynamic and static pay-offs. Sampsistemi SpA – Italy Website : www.sampspa.com

sound accident prevention. In addition, a patented electrical cabinet placed inside the cradle includes all drives and I/O to manage all equipment inside the bows. The communication between this cabinet and the main one occurs through a abatement and

Advertorial on behalf of Decalub Rod PDH dry coating: Dies can have infinite life

issues and rapid die wear are totally eliminated.

Benefitting from the lubricant five-way interaction control, the PDH rod dry coating can be used with a customised next-generation “white graphite” powder, easily formulated for application within one hour, that creates a high-performance full-film anti-friction conversion coating, performed at zero energy consumption, that is found to perform comparibly to or better than zinc phosphate, or any other in-line wet pre-coating chemical. Applications include all plain carbon wires up to 0.98 per cent carbon, mechanically descaled or acid cleaned, coated or uncoated, drawn at extreme speed. Decalub – France Email : info@decalub.com Website : www.decalub.com

▲ ▲ Wire rod coating and lubrication by PDH system

powders, until the lubricant melting point is attained, melting at temperature range of 195°C to 240°C/374°F to 464°F for high carbon wire drawing applications, thus instantaneously creating a high- performance residual dry coat that reduces die wear to an unmeasurable level (about 0.2 micron per tonne of drawn wire), meaning burnt lubricant

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March 2019