OVERVIEW
ABB’s Slab SEMS creates deep, transversal stirring that promotes large equiaxed zones – typically above 50% while reducing centerline segregation, halfway cracks and ridging in ferritic stainless steel. Installed on more than 50 strands worldwide, it improves internal quality for ferritic, stainless and silicon steels and offers both internal and external installation options with low maintenance and dependable performance even during breakouts.
Key benefits
Larger equiaxed zones for stronger internal structure
<p>Enables equiaxed ratios typically above 50%, improving strand uniformity and supporting more stable downstream processing.</p>Reduced centerline segregation
<p>Deep, effective stirring reduces centerline segregation, improving internal slab soundness and consistency.</p>Fewer halfway cracks
<p>More homogeneous solidification conditions help suppress the formation and propagation of halfway cracks.</p>Lower ridging and roping in ferritic stainless steel
<p>Refined internal structure reduces ridging and roping, improving final surface quality and forming performance.</p>More isotropic properties in silicon steels
<p>Improved stirring promotes better structural and magnetic uniformity essential for silicon steel applications.</p>Higher productivity and lower cost
<p>Greater internal quality, fewer defects and low maintenance needs contribute to reduced overall casting and processing cost.</p>FEATURES
Slab SEMS provides the strongest stirring force of its kind, with a large active area delivering superior metallurgical performance.
Generates strong flow penetration and long stirred lengths for stable and reliable solidification.
Optimized for ferritic, stainless and silicon steels
Designed to meet the metallurgical demands of key grades requiring high internal and surface quality.
Can be installed internally or externally, enabling compatibility with a wide range of slab caster configurations.
Coil placement behind support rollers enhances robustness, smooth operation and insensitivity to breakouts.
Practical positioning minimizes exposure to breakout conditions and supports uninterrupted operation.
A strong coil design reduces service requirements and supports long‑term equipment availability.
Installed on more than 50 strands worldwide with consistent metallurgical improvement across steel grades.
Backed by ABB’s global service organization and extensive metallurgical expertise throughout the product lifecycle.