Custom EI electrical steel laminations for transformers, power supplies, instrument transformers and other magnetic assemblies. Shuaijin manufactures drawing-based E and I profiles, matched sets and approved laminated core stacks after reviewing material, geometry, tooling, quantity and inspection requirements.
Supply formats
- Loose E and I laminations
- Matched E-I lamination sets
- Counted or defined stack packs
- Bonded or riveted core stacks when approved for the drawing
Drawing and material review
The project drawing should define the overall E and I dimensions, centre-leg and outer-leg widths, window size, hole positions, material grade, nominal thickness, tolerances and any orientation requirement. If only a physical sample is available, a controlled drawing is recommended before tooling approval.
Process and quality controls
- Electrical-steel grade and thickness identification
- Profile, window and hole-position inspection
- Burr, flatness and appearance review
- Set count or stack-height verification
- Drawing-linked sample approval and packing requirements
Typical applications
- Power and control transformers
- Power-supply magnetic components
- Instrument transformers
- Drawing-based electromagnetic assemblies
Information required for quotation
- E and I drawings or controlled sample
- Electrical-steel grade and nominal thickness
- Critical dimensions, tolerances and hole positions
- Loose, matched-set or assembled delivery format
- Prototype quantity, repeat demand and destination
- Inspection records and packing requirements
Final material, tooling, dimensions, magnetic requirements, assembly method, inspection criteria, quantity and lead time are confirmed during engineering review.
Read the EI transformer lamination RFQ checklist or send the project requirements.