Magnetic Flux Leakage (MFL): High-Performance Inspection for Ferromagnetic Tubes
Magnetic Flux Leakage (MFL) is an electromagnetic inspection method used to evaluate ferromagnetic tubes in heat exchangers, boilers, and industrial systems. By magnetizing the tube wall with permanent magnets, MFL detects corrosion, pitting, and wall loss with high accuracy.
How It Works
Tube Wall Magnetization
Permanent magnets in the probe saturate the tube wall, creating a strong magnetic field.
Flux Leakage Detection
Defects like corrosion or pitting cause the magnetic field to leak from the surface.
Signal Analysis
Sensors capture the leakage, and software interprets the data to locate and characterize defects.
Key Advantages of MFL
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Sensitive Detection: Identifies internal and external corrosion, pitting, and wall thinning.
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Fast Inspection: Covers long tube lengths efficiently.
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No Couplant Required: Dry inspection reduces setup time and complexity.
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Reliable for Ferromagnetic Tubes: Ideal for carbon steel and other magnetic materials.
Ideal Applications
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Carbon steel heat exchanger tubes
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Boiler tubes
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Condenser and cooler tubes
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Petrochemical, refinery, and power plant equipment
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Industrial systems requiring rapid wall-loss detection