HANDLING OF COILS0 pages

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^Gauss

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magneti

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www.gaussmagneti.it

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HANDLING OF FERROUS MATERIALS

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GAUSS MAGNETI designs and manufactures special

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electromagnets devoted to handling coils with

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horizontal as well as vertical axis and weight from 3 to

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50 tons. Every electromagnet can handle a wide coils

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range thanks to the particular polar shoes which fit

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the coil profile.

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They are mainly used for the following applications:

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• Unloading the production of coils

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• Loading and unloading of lorries, rail containers,

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ships.

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• Stocking in store or warehouse

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Handling of coils by electromagnets brings to a

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remarkable spare in store space reducing also the

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damage on the coil due to the traditional "C" hook.

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Moreover handling is carried out by one operator with consequent cost reduction. The electromagnets can

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be designed for handling both vertical and horizontal axis coil.

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Main technical features of our rectangular electromagnets are:

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• Frame in deep welded high magnetic permeability steel plate

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• Coil in electrolytic aluminum or copper band designed for a very low current density and consequent

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good Joule heat dispersion.

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• C class insulation (220 °C)

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• Bottom plate in 12% manganese steel.

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• Hanging by means of 4 branches chains in grade 8 steel,

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The electromagnets are fed:

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• by the electric net through our electronic equipment with 4-quadrants digital converter allowing

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magnetic flux setting, counter-excitation bringing to fast load release, coil temperature control by means of

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thresholds (important in high-temperature magnets), automatic switching to batteries , buffer batteries (Pb

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or Ni-Cd), automatic batteries loading system and continuous control of the batteries charge condition.

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Gauss Magneti has also successfully developed the electropermanent magnets technology.

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Electropermanent magnets hold their magnetization also in case of net failure or cable break, so they do

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not need buffer batteries or mechanical safety forks.

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Their peculiarity lies in that they are activated by a current pulse lasting few seconds and that they hold

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their magnetization till a second current pulse - opposite the first one - deactivate them.

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Beside the obvious advantage of handling safety, they also assure the highest reliability being actually

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exempt from internal Joule heating.

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Coming on the market of high performance magnetic materials has also allowed in electropermanent

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magnets a weight and dimensions reduction preserving the same capacity.

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Handling of coils by means of electropermanent magnets is possible for limited air gaps and binding

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conditions. Electropermanent magnets cannot be used by large air gaps and not good coil binding.

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LAST UPDATE: 22/10/2003_PAGE 1/2

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GAUSS MAGNETI SRL - VIA SCAR0NI, 27 -25131 - BRESCIA - ITALY - TEL. +39.030.3580375 - FAX +39.030.3580846 - INF0@GAUSSMAGNETI.IT

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