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Core Lamination Component – Electrical Equipment Manufacturing

Component Specifications

Definition

Core lamination refers to the process of assembling multiple thin, insulated steel laminations into a solid core structure for electromagnetic applications. In stator/sensor heads, these laminations are precisely stacked and bonded to form the magnetic circuit, minimizing eddy currents that cause energy loss and heat generation. The laminations are typically coated with insulating materials and arranged to optimize magnetic flux paths while maintaining structural integrity under operational stresses.

Working Principle

Core laminations work by reducing eddy currents through electrical insulation between thin steel sheets. When alternating magnetic fields pass through the core, induced currents are confined to individual laminations due to the insulating layers, significantly lowering energy losses compared to solid cores. This improves efficiency, reduces heating, and enhances the performance of electromagnetic devices like motors and sensors.

Materials

Electrical steel (silicon steel, grades like M-19, M-36, or non-oriented grades), typically 0.2mm to 0.5mm thick, with insulation coatings (e.g., C-4, C-5 phosphate, or organic coatings).

Technical Parameters

Core Loss < 2.5 W/kg at 1.5T, 50Hz
Thickness 0.2mm - 0.5mm
Permeability > 1500 H/m
Stacking Factor 0.95 - 0.98
Flatness Tolerance ±0.05 mm
Insulation Resistance > 100 MΩ

Standards

ISO 683-17, IEC 60404-8-7, DIN EN 10106

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Core Lamination.

Parent Products

This component is used in the following industrial products

Stator/Sensor Head

The stationary component of a position encoder/resolver that houses the sensing elements for detecting rotational position.

View Product Details

Engineering Analysis

Risks & Mitigation

Insulation breakdown leading to increased eddy currents
Mechanical deformation during stacking
Corrosion if coatings are compromised
Thermal stress causing delamination

FMEA Triads

Trigger: Poor insulation coating application
Failure: Increased eddy current losses and overheating
Mitigation: Implement quality control for coating thickness and uniformity, use standardized testing (e.g., insulation resistance checks)

Trigger: Inaccurate stacking alignment
Failure: Reduced magnetic efficiency and mechanical instability
Mitigation: Use precision stacking fixtures and automated alignment systems, conduct regular dimensional inspections

Trigger: Material impurities in electrical steel
Failure: Higher core loss and degraded electromagnetic properties
Mitigation: Source materials from certified suppliers, perform material testing per ISO/IEC standards

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Dimensional tolerances per ISO 2768-m, flatness within ±0.05mm, stacking alignment within ±0.1mm

Test Method

Core loss testing per IEC 60404-2, insulation resistance per ASTM D257, dimensional checks via CMM or optical measurement

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

Why are core laminations used instead of solid cores?

Core laminations reduce eddy current losses by insulating individual steel sheets, which confines induced currents and minimizes energy dissipation as heat, improving efficiency and thermal management.

What materials are commonly used for core laminations?

Electrical steel (silicon steel) is standard, with insulation coatings like phosphate or organic layers to prevent electrical contact between laminations.

How does stacking factor affect core lamination performance?

A higher stacking factor (closer to 1) indicates better material utilization and denser magnetic flux paths, enhancing electromagnetic performance but requiring precise manufacturing to maintain insulation integrity.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Core Lamination