EuroWire November 2014

News Corporate

Multi-wire induction heating

ATE recently developed two induction heating systems for treating wires in parallel, with the names IMW (independent control wire) and CMW (common control wire). Through the use of advanced technologies in the field of power electronics, these systems represent a sophisticated and efficient solution for the simultaneous heating of multiple wires with the same or even with different diameters. The main characteristics of the two systems are: • for the IMW system the possibility of heating multiple wires of different diameter separately, wire by wire, with the same or different temperatures and speeds (upon request) • for the CMW system the possibility of heating wires of the same diameter to the same temperature or wires of slightly different diameter to almost the same temperature, taking account of a suitable‘velocity x diameter’ (DV) Compared to other types of furnaces, such as resistance, gas, fluid bed or lead bath heaters, the IMW and CMW multi-wire induction heating systems have the following advantages: • no environmental pollution • more compact • higher efficiency • optional closed loop process control Besides wires, the systems are also able to treat metal strips or bands. In these cases the systems are identified with the codes IMS or CMS, instead of IMWor CMW. In addition to ferrous materials, the systems can heat aluminium, copper, brass, etc, with efficiency values proportional to the type of material.

▲ ▲ Induction heating the ATE way

• stress relieving (max temperature of around 400°C) • diffusion/brass coating of wires for steel cord (max temperature 550-600°C) • preheating for galvanising (around 500°C) • preheating for painting or coating (max 200-250°C) • preheating before an existing gas furnace in the case of increased productivity of the system The IMW/IMS and CMW/CMS systems are completely modular and can heat a variable number of wires. ATE Srl – Italy Website : www.ate.it

The compactness of the heating units allows them to be easily installed in limited spaces and, above all, in existing lines in which overall dimensions are binding. The frequency converter, the heat exchanger and the control panel which complete the system can be positioned remotely in available spaces, even at a certain distance from the heating unit. The IMW and CMW multi-wire induction heating systems can be used in various industrial processes, some of which are: • annealing (max temperature of around 720°C)

Merger leads to broader portfolio From January this year, Sandvik Hard Materials joined forces with Diamond Innovations, by combining the previously independently operated businesses into a new business, Sandvik Hyperion. Sandvik Hyperion is a full-line provider of cemented tungsten carbide, tungsten carbide powders, diamond and cubic boron nitride materials used in wide range of material-removal and wear-protection applications. In addition to innovative materials, the company offers product solutions, unique services and application development capabilities to support its customers’ needs. Sandvik Hyperion – Spain Website : www.hyperion.sandvik.com

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November 2014