Automating Magnetic Property Testing for Electrical Steel

Why Magnetic Property Testing Matters More Than Ever

Electrical steel is a critical material for modern energy and electrical systems. From motors and transformers to renewable energy equipment and power electronics, its magnetic properties directly affect efficiency, energy loss, and long-term reliability.

As global demand for high-efficiency electrical equipment continues to grow, manufacturers are facing increasing pressure to control magnetic performance more precisely and more consistently. This has placed magnetic property testing at the center of quality control in electrical steel production.

However, traditional testing methods, often reliant on manual operation and standalone instruments, are becoming increasingly difficult to scale. In high-throughput production environments, challenges such as limited testing speed, operator-dependent variability, and fragmented data management are no longer acceptable.

The Industry Shift Toward Automated Testing

Across the manufacturing sector, automation is no longer driven solely by labor efficiency. It is increasingly about consistency, traceability, and confidence in data.

In electrical steel production, magnetic property testing must keep pace with modern production lines while maintaining strict accuracy requirements. This has led to a clear industry trend: moving from manual or semi-automated testing toward fully automated magnetic performance measurement systems.

Automated testing enables manufacturers to reduce human influence, standardize test procedures, and generate reliable data that supports both real-time quality control and long-term process optimization.

An Integrated Automation Solution for Electrical Steel Production

The Electrical Steel Sheet Magnetic Properties Automatic Measurement System is built around a dedicated core manufacturing system: an Automatic Magnetic Property Testing Device, combined with proprietary system software developed in-house.

Together, the hardware and software form a fully integrated solution capable of executing the entire testing workflow automatically. This includes sample  loading, weighing, inserting, Epstein frame magnetic property measurement, stacking coefficient measurement, tape sealing, and unloading, etc. It is a one-stop solution to solve the problem of electrical steel from inspection to device traceability.

By automating the full testing process, the solution directly addresses long-standing challenges commonly found in electrical steel production, including large operator-dependent deviations, low testing efficiency, insufficient measurement accuracy, and difficulties in establishing reliable metrological traceability.

Designed to Overcome Measurement Bottlenecks in Large-Scale Manufacturing

In large-scale industrial manufacturing, magnetic property measurement of electrical steel has long been a technical bottleneck. High precision requirements, combined with demanding production throughput, place significant pressure on traditional testing methods.

This solution is specifically designed to overcome these constraints by integrating automated mechanical operations with controlled excitation, precise measurement, and standardized software-driven testing procedures. The result is a stable, repeatable, and scalable testing process suitable for continuous production environments.

Applications Across the Electrical Steel Industry Chain

The solution is primarily deployed in large steel enterprises and companies across the electrical steel value chain, where requirements for measurement accuracy, efficiency, and long-term reliability are particularly stringent.

By providing a consistent and automated testing platform, the system supports both upstream material production and downstream application verification, enabling manufacturers to establish a unified and reliable magnetic performance evaluation framework.

Advancing Local Capability in a Traditionally Concentrated Market

By addressing critical measurement challenges at the system level, the solution represents a significant step forward in domestic capability for automated magnetic property testing of electrical steel.

It fills a long-standing technological gap in this field and offers manufacturers an alternative to highly concentrated international supply options, contributing to a more diversified and resilient industrial ecosystem.

From Production Lines to Laboratories

While the system is primarily optimized for production-line testing, TUNKIA also offers laboratory configurations for material research, performance verification, and process development.

In laboratory settings, we offer a system supports more flexible test configurations while maintaining the same measurement principles and data consistency as production-line systems. This allows manufacturers to use a unified technical approach across both production and R&D environments.

Practical Value for Manufacturers

By implementing an automated magnetic property testing system, electrical steel manufacturers can achieve:

• Faster testing cycles that match modern production speeds

• Improved consistency in magnetic performance evaluation

• Reduced reliance on skilled manual operators

• Enhanced data reliability for quality assurance and process optimization

Together, these benefits help manufacturers improve overall production efficiency while maintaining strict control over product performance.

Recognition at the National Level

Based on its technical approach and application value, the Automatic Magnetic Property Testing System has recently been selected for inclusion in a national-level industrial technology program.

This recognition reflects the system’s engineering reliability and its alignment with the broader direction of intelligent and high-quality manufacturing, further reinforcing confidence in its long-term application potential.