27Q130 30Q120 Grain Oriented Silicon Steel Core

For rotating electrical machinery incorporating toothed circular laminations in their core assemblies, the essential requirement for isotropic magnetic properties dictates the use of non-oriented silicon steel (NOES) as the optimal material solution. This choice ensures consistent magnetic performance regardless of the rotational orientation, which is critical for efficient motor and generator operation.

In contrast, power transformers utilizing either stacked or spiral-wound core configurations benefit from the specialized characteristics of cold-rolled grain-oriented silicon steel (CRGO). The material's pronounced magnetic anisotropy, with superior properties along the rolling direction, perfectly matches the static operational requirements of transformer cores, enabling enhanced energy efficiency and reduced core losses.

Beyond these fundamental magnetic considerations, high-performance electrical steel must satisfy several additional stringent specifications:

• Superior punchability to facilitate precision stamping of complex lamination profiles

• Exceptional surface quality with tight thickness tolerances for consistent stacking

• High-performance insulating coatings to minimize interlamination losses

• Exceptional resistance to magnetic aging to ensure long-term stability