Why a Visually Perfect Core Still Needs Magnetic Evaluation
Would a photograph of a core tell you which o…
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Electrical steel & material selection
Practical engineering articles for transformer-core selection, design and production.
27 articles
White Spots and Scratches: Diagnose the Surface Before Naming the Defect
A white spot on a GOES sheet is a location to…
Read full articleInsulation Coating Is a Measured Function, Not a Yes-or-No Feature
"Both sides coated" leaves the most useful co…
Read full articleSurface Rust on GOES: What Should Decide the Disposition?
Colour is a poor acceptance criterion for a r…
Read full articleThe Sea-Freight Risk That Can Begin When the Package Is Opened
The voyage can finish without visible water i…
Read full articleMaterial Utilization Cannot Override the Magnetic Direction
The nesting software may find a better fit by…
Read full articleMixed Laminations: The Risk Is Not Always Visible in the Stack
A packet can look correct and still contain t…
Read full articleSame CRGO Grade, Different Coil: Managing the Variation
A grade designation defines requirements. It …
Read full articleMaterial Traceability Must Survive the Split and the Merge
The coil number is known. Can you still ident…
Read full articleWhat a Large CRGO Inventory Does and Does Not Protect
"In stock" needs a second sentence: Is the re…
Read full articleWhere the Magnetic Advantage Is Lost Along the Manufacturing Route
A loss budget can disappear without a single …
Read full articleWhy the Highest GOES Grade May Not Be the Best Transformer Design
Suppose the lowest-loss GOES is approved. Wha…
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Engineering reference notes
Short reference notes complement the full published articles.