WCA September 2022

Technology News

New in-line induction wire preheater range Zumbach Electronic has launched an in line inductive wire preheater range based on a new intelligent induction power controller, ensuring stable and linear heating of the conductor. Repeatable and uniform conductor temperatures help shorten start-up times and reduce scrap production.

accommodating a different range of wire diameters. Maximum line speed is 2,500m/min (1,700m/min for the 25kW model). The systems all feature an Ethernet TCP/IP service interface, plus one optional host interface – serial RS 232/422/485, Ethernet TCP/IP, Profibus DP, Profinet or Ethernet/IP. Zumbach’s Autac 300 is used for temperature measurement and control in applications with conductor preheaters or post annealing re-heat stages. The system consists of a sensor and a pro cessor display unit, and uses the convec tive heat flow principle to provide precise non-contact temperature measurement from 10 to 300°C on wires and cables in a 0.2 to 7mm diameter range. The measurement is independent of influencing factors such as colour, emission, speed, material or surface, and the slotted measuring head allows the wire to be changed without interruption for threading. Zumbach Electronic AG www.zumbach.com

The range includes the Visu-Touch PoE (Power over Ethernet) operator screen. The rugged and compact 7" capacitive touch screen allows VESA mount installation for flexible positioning at the required location. The system provides recipes for 20 different materials – three fixed and 17 configurable to define custom materials with their specific composition details and heating requirements. The preheater measures the ambient temperature to accurately calculate the increase needed to heat the wire to the desired preheat temperature. An optional interface allows the connection of an external temperature measuring system that can be placed directly at the entrance to the extruder for the most accurate wire temperature recording. Three models are available, with heating powers of 8, 16 and 25kW, each

Zumbach’s wire preheaters reduce start-up time and scrap production

Technical Innovation for New Applications

Seamless Aluminium Sheathing for HV and EHV Cables

• Corrugated and smooth aluminium sheath • Seamless aluminium sheath with no weld • Light weight and good conductivity • Good environmental properties and proven reliability • Lowmaterial costs (standard CCR rod) • Continuous extrusion with no weld, stop marks or overlaps • Longer lengths and thicker wall

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September 2022