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Amorphous steel is limited to foils of about 50 μm thickness. The mechanical properties of amorphous steel make stamping laminations for electric motors difficult. Since amorphous ribbon can be cast to any specific width under roughly 13 inches and can be sheared with relative ease, it is a suitable material for wound electrical transformer cores.
Laminated cores always have a stacking factor less than unity; a stacking factor of unity implies no laminate at all. Stacking factors are typically 0.95 or higher for transformer cores [4] and machine stators. [5] However, cores made from amorphous metal have a stacking factor of around 0.8, compared to 0.96 for silicon steel. [1]
30 varnished silicon steel foils each of thickness 0.0172 inches (0.4368 mm); density 7.51 g cm −3; measured near a temperature of 358.2 K under pressure in the range 0 — 128 psi: 0 psi 0.433 w m −1 K −1 20 psi 0.807 40 psi 0.965 60 psi 1.04 80 psi 1.10 100 psi 1.18 120 psi 1.24 128 psi 1.26 120 psi 1.26 100 psi 1.22 80 psi 1.18 60 psi ...
Electrical equipment such as transformers and motors usually use an electrical steel laminate coatings to form the core of the coils used to produce magnetic fields. The thin lamination reduces the power loss due to eddy currents. Fiber metal laminate is an example of thin metal laminated by, a glass fiber-reinforced and epoxy-glued sheets.
Here the lower saturation magnetization of amorphous cores tends to result in a lower efficiency at full load. Using more copper and core material it is possible to compensate for this. So high efficiency AMTs can be more efficient at low and high load, though at a larger size.
Doctors explain the safest and most effective way to blow your nose. Here, experts share how to remove mucus quickly and safely.
In this action-packed episode of Football 301, Nate Tice and Charles McDonald dive deep into the most intriguing matchups of NFL Week 15.
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