Magnetic Particle Inspection
What is Magnetic Particle Inspection
Magnetic Particle Inspection (MPI or MT) is the process for detection of surface, and slightly sub-surface cessation using finely divided ferromagnetic particles to indicate defects in magnetic materials. (Ferromagnetic particles are materials that have magnetic properties similar to those of iron such as cobalt, nickel and some alloys. They can become permanently magnetized).
Ferromagnetic particles are applied to the test surface, and magnetic yokes are used to generate a magnetic field to pass through and around the test surface. These particles register abrupt changes in resistance in the path of the magnetic field and will therefore be attracted to and outline the crack or anomaly if there is one.
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Benefits of Magnetic Particle Inspection
- It is quick to carry out
- Results are immediate
- It detects surface and near surface flows
- Can be conducted on site or in workshop
- Extensive pre cleaning isn’t required
- Large surface areas can be examined easily
Tech Inspections have shown professionalism and experience in assisting us to obtain welder approvals and weld procedures to both 15614 & ASME standards we would highly recommend them to other engineering companies who require assistance in these areas
We are proud to use Tech Inspections Ltd & welding services, for their professionalism and expertize in the training of our engineers to the standard of coded welding, and obtaining the necessary certificates.
Tech Inspections have always shown professionalism and vast experience in the role as our Responsible Welding Co-ordinator. They have assisted with audits and given us appropriate guidance where required, whilst offering practical hands-on training and advice whenever needed.