Magnetic Particle Testing (MPT) SERVICES

Magnetic Particle Testing (MPT) is a non-destructive testing method used to detect surface and near-surface flaws in ferromagnetic materials. It relies on the principle of magnetic induction. The material under test is magnetized, and iron particles are applied to the surface. If there are any defects, such as cracks or discontinuities, the magnetic field is distorted, causing the iron particles to gather at those locations, making the flaws visible. 

MPT is commonly used in industries such as manufacturing, aerospace, automotive, and oil and gas. It is suitable for inspecting materials like steel, iron, nickel, cobalt, and their alloys. The method is employed to detect surface cracks, weld defects, fatigue cracks, and other surface discontinuities. 

 Several standard codes and specifications govern magnetic particle testing, including:

1. ASTM E1444: Standard Practice for Magnetic Particle Testing.
2. ISO 9934: Non-destructive testing — Magnetic particle testing.
3. ASME Section V Article 7: Magnetic Particle Examination in Boiler and Pressure Vessel Code.
4. EN 1290: Non-destructive testing — Magnetic particle testing.

1. Surface and Near-Surface Detection: MPT can detect both surface and near-surface flaws, making it suitable for detecting defects that are not easily visible to the naked eye.
2. Fast and Economical: The method is relatively quick and cost-effective compared to other non-destructive testing methods, allowing for efficient inspection of large areas or volumes.
3. Portable and Versatile: MPT equipment is portable and can be used in various environments, including field inspections and on-site operations.
4. Immediate Results: Flaws are visible immediately during the inspection process, enabling prompt decision-making and further evaluation.

1. Limited to Ferromagnetic Materials: MPT is suitable only for ferromagnetic materials such as steel and iron. Non-ferromagnetic materials like aluminum, copper, and most non-metallic materials cannot be inspected using this method.
2. Surface Preparation: Proper surface preparation is crucial for effective MPT. The surface must be cleaned thoroughly, and any non-magnetic coatings or contaminants must be removed.
3. Surface Accessibility: MPT requires direct access to the surface being inspected. It may be challenging to inspect complex shapes, tight spaces, or areas with restricted access.
4. Limited Depth of Detection: MPT is primarily used for surface and near-surface flaw detection. It may not detect defects that are located deep within the material.

It is important to refer to the specific standard codes, industry guidelines, and equipment manufacturer's instructions for proper implementation of magnetic particle testing and interpretation of results.