Special Electro lifting magnets
Spacer Electro Magnet (CELM) for high temperature materials
The high temperature of the material being handled is typically the main cause for lifting magnet down times and premature aging.
The SGM CELM lifting magnet is specifically designed for high temperature material applications such as slabs, blooms, billets coming directly off casters.
The proprietary design of the CELM results in no contact between the magnet ferrous core subject to direct heat transmission from the hot load and the magnet winding.
The benefit of the SGM CELM magnet design is a radical extension of the duty cycle (and life time) of the magnet.
The proprietary SGM CELM constitutes a revolutionary technological innovation related to lifting magnets.
Lifting magnets with no magnetic side attraction dispersion
Special SGM proprietary magnet design resulting in a drastic reduction of magnet casing side attraction.
These SGM magnets are specifically suited for steel service centers where magnets can enter racks with no disturbing side attraction to steel columns or to other bundles/packs next to the one being handled. These magnets are also specifically recommended for remote operations in large storage facilities.
SGM Mega Scrap Magnet
The SGM Mega Scrap Magnet is an alternative to circular scrap magnets specifically suited for belt loading with Consteel® technology. Thanks to the double magnetic circuit (SGM patent), with the Mega Scrap Magnet the scrap is distributed over all the magnetic surface in a more homogeneous way with respect to the traditional circular scrap magnet, eliminating the “mushroom” effect.
Benefits
- When using Consteel® technology, it is necessary to reach a level of productivity which must remain constant in order to have savings in energy. By using the Mega Scrap Magnet for loading the belt feeding the Consteel, the loss of scrap is avoided and there is a more homogeneous distribution of the scrap over the whole surface of the belt.
- Accumulations of material which are typical when using circular scrap magnet are no longer present. Also, the tipping function (electronic device able to cut the voltage to the magnets for a very brief period) permits the operator to dose the drop of the scrap onto the belt.
- The octagonal shape of the Mega Scrap Magnet together with the use of anodized aluminium (aluminium strip chemically transformed on its outer surface into an insulation material able to withstand temperatures beyond the melting point of the aluminium itself) permit the best possible dissipation of heat which is generated inside the magnet itself. The result is optimization of the working cycle of the magnet.
- The electrical equipment with integrated converter, is provided with the “over-excitation” function which significantly reduces the magnetization and demagnetization times.
- Designed and manufactured according to European standards EN 13155.
- The two sketches below indicate how two circular scrap magnets unload scrap from a wagon with respect to the handling of scrap using one mega scrap magnet.
Safety device (CDMD) for magnets lifting dynamic loads
Some Loads such as multiple plates, eye horizontal coils or bundles of structurals do not always behave as compact loads but may flex or open up a bit (structurals in a bundle) when lifted up by a magnet. This results into possible significant dynamic forces in addition to the weight of the load itself.
The SGM proprietary CDMD safety device mounted directly on the magnet reads possible flexing and opening up situations and makes sure they are not excessive for the safe handling of the load by magnets.
Magnet windings made of anodized aluminum strip
Anodized aluminum strip consists in a standard aluminum strip the surface of which is chemically oxidized so as to achieve an insulating coating bounded to the metal.
By using anodized aluminum strip there is no longer need for the typical electrical insulator tape between the turns of the aluminum spools. This results in creating more space for additional aluminum turns (stronger magnet) and, above all, in providing the magnet with a much higher heat dissipation capacity which is beneficial for magnet performance and life time.
