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Lubeco Green Fluids

MPI Oils, Powders And Solutions

Magnetic Particle Inspection (MPI) fluids, oils, powders, and solutions are essential consumables used in non-destructive testing (NDT) to detect surface and near-surface discontinuities in ferrous materials. These formulations are designed to provide stable magnetic particle suspension, high sensitivity, and clear visibility under UV or white light to reveal cracks, laps, inclusions, and porosity in components.
MPI systems typically use either oil-based carrier fluids with fluorescent or non-fluorescent powders, or water-based solutions for safer, eco-friendly inspection. Oil carriers offer rapid drying and bright particle contrast, while water-based MPI solutions reduce fire hazards, provide corrosion inhibition, and simplify post-inspection cleaning. Together, they form a reliable toolkit for industries that demand accurate, repeatable inspection to maintain product quality and safety.
At Lubeco Green Fluids, we offer a complete range of oil-based carrier oils, fluorescent and non-fluorescent powders, and water-based MPI solutions tailored for industrial inspection needs. Our formulations combine excellent suspension stability, superior wetting, and corrosion protection to ensure consistent flaw detection in forged steels, sintered metals, cast iron, and heat-treated parts.

With a strong focus on operator safety, environmental compliance, and ease of use, Lubeco’s MPI products are trusted by automotive, aerospace, foundry, and heavy engineering sectors for both manual and automated testing systems. By delivering precision, reliability, and safety, we help manufacturers meet stringent quality control and industry standards.

APPLICATIONS

Lubeco’s Neat Metal Cutting Oils are formulated to deliver reliable performance across a wide spectrum of machining operations:

  • Crack Detection in Ferrous Components: Inspection of forged steels, automotive parts, and sintered metals for surface and sub-surface defects.
  • Heat Treatment Inspections: Detection of cracks, forging bursts, laps, porosity, and inclusions after quenching, tempering, and other heat treatment processes.
  • Automotive, Aerospace & Foundry QC:Reliable magnetic particle inspection for quality control in high-precision industrial sectors.
  • Carrier Fluids for MPI Powders: Oil-based and water-based carriers provide excellent suspension stability for fluorescent and non-fluorescent powders.
  • Corrosion Inhibition: Protects components during wet MPI processes by preventing flash rust and extending service life.

Material Compatibility

Designed for multi-metal machining, Lubeco’s neat oils are trusted across industries for their compatibility with a diverse range of substrates:

Detects cracks, laps, and inclusions in critical automotive and aerospace components.

Provides high sensitivity for identifying porosity and structural flaws in powdered metal parts.

Reliable detection of surface discontinuities in foundry and general engineering applications.

Optimized for inspection after quenching, tempering, or case-hardening processes.

Compatible with other ferrous substrates commonly tested in magnetic particle inspection.

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MPI Oils
Low‑odour, oil‑based carrier fluid for magnetic particle inspection, formulated with antirust additives and minimum fluorescence for clear, precise crack detection.

Material Compatibility

Forged steel, other ferrous materials, sintered metals

Applications

Carrier oil for crack detection of forged components, steel bars, and sintered parts

Advantages

Enhanced, oil‑based carrier fluid for magnetic particle inspection with superior penetration and consistent particle suspension for high‑precision flaw detection.

Material Compatibility

Forged steel, other ferrous materials, sintered metals

Applications

Carrier oil for crack detection of forged components, steel bars, and sintered parts

Advantages

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MPI Powder - Oil Base
Finely divided, fluorescent magnetic powder for oil‑based magnetic particle inspection, offering high magnetic response, low coercivity, and superior crack‑detection sensitivity.

Material Compatibility

Forged steel, alloy steels

Applications

Detection of grinding/heat‑treatment cracks, forging bursts, laps, porosity, inclusions, and other discontinuities in automotive and industrial components

Advantages

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MPI Powder & Solution - Water Base
Water‑soluble MPI carrier fluid with corrosion inhibitors, designed for safe, eco‑friendly, rust‑protected crack detection in ferrous components.

Material Compatibility

Forged steel, mild steel, cast iron, sintered ferrous metals

Applications

Water‑base carrier for MPI powders in crack detection of parts, bars, and sintered components; also used as corrosion inhibitor in water‑based MPI (2–3% concentration depending on metal type)

Advantages

Dry, fluorescent magnetic particle powder for water‑based MPI, producing a bright green fluorescent suspension for high‑sensitivity flaw detection.

Material Compatibility

Forged steel

Applications

Detection of surface cracks, forging defects, porosity, laps, and inclusions in automotive and industrial forgings via magnetic particle inspection

Advantages

Why Choose Lubeco’s MPI Oils, Powders & Solutions?

Lubeco’s MPI consumables are engineered to meet the highest inspection standards with clear advantages:

Trusted
Accuracy

Fine particle suspension and bright fluorescent visibility for reliable crack and flaw detection

Comprehensive
Range

Oil-based carriers, fluorescent/non-fluorescent powders, and water-based MPI oils & powders for versatile inspection workflows.

Safety &
Environmental Responsibility

Low odour, low-toxicity oils with high flash points and eco-friendly water-based solutions.

Ease of
Use

Ready-to-use carrier oils and easy-to-mix powders simplify inspection setup and reduce cleaning times.

Operational
Reliability

Excellent corrosion protection, fast drying oils, and stable suspensions ensure consistent test results

Industrial-Grade
Performance

Optimized for automotive, aerospace, and heavy engineering quality control requirements.

Expert Technical
Support

Lubeco provides technical guidance on MPI fluid management, application, and compliance with global standards.