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Content archived on 2024-05-14

Transverse flux induction heating of non-ferrous and precious metal strip - 'tfh'

Objective



Strip material is a widespread semi-finished product in non-ferrous and preciou s metal industry. In the strip production and strip processing lines, the heat treatment of the strip is an absolutely necessary integral part with an energy demand up to 40 % of total energy consumption of the entire industrial process. Nowadays, non-ferrous and precious metal strip is mainly heated in conventi onal batch ovens and annealing furnaces, based on gas-fired or electrical resis tance heating methods. These conventional heating methods have low energy efffi ciency, productivity and technological flexibility. This is a result of the low heat transfer rate of the indirect heating by convection and radiation, which is typical for all the conventional technologies. Induction heating is a pro gressive alternative to the conventional methods with distinct technological an d economical advantages because of the heat generation inside the workpiece its elf. In the case of strip heating, especially transverse flux induction heating (TFH) offers optimum combination of energy savings, high productivity, process flexibility and minimum floor space. The determination of the optimum installa tion design and operating regime, however, is extremely complicated because the TFH process is characterised by a large number of very closely correlated para meters. Moreover, the distribution of heat sources and output temperature field in the strip is normally non-homogeneous. Therefore, the major task within this project is the determination of the optimum installation design and operat ing regime by means of numerical modelling. On the basis of the obtained theore tical results, a real-scale TFH prototype will be built. The mathematical model ling will be validated and the TFH prototype will be tested by extensive experi mental investigations. in close co-operation with the industrial partners, equi pment suppliers and users, the TFH prototype will be finally adjusted and modif ied in order to adapt it to all requirements of industrial use. The final go al of the project is to provide a strip heating technology with high energy eff iciency and productivity that fulfils the high standards of non-ferrous and pre cious metal industry.

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Coordinator

Messingwerk Plettenberg Herfeld & Co.GmbH & Co. KG
EU contribution
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Address
Reichstrasse 80
58840 Plettenberg
Germany

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Total cost

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Participants (5)

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