MPI is used for the detection ofsurface and near-surface flaws in ferromagneticmaterials. Under inspection a permanent magnet,electromagnets or electromagnetic coils areused to apply a magnetic field to the test item.Any flaws will be revealed by the distortionof magnetised flux.
The component surface is first magnetised in at least two perpendicular directions at 90 degrees to each other, ensuring complete inspection in both planes. The process consists of spraying fine magnetic particles within a carrier fluid onto the component. Particles are then attracted to the area of flux leakage, creating a visible flaw indication. To ensure clear contrast visibility, white paint is mixed with black magnetic particle ink. A further option uses dry powder application for hot surfaces where wet ink is less effective. The most sensitive process for revealing finer imperfections uses fluorescent particles viewed under UV light.
Why should I use ITCL?
ITCL prides itself on the high quality of application and testing by experienced technicians. Our workforce is fully qualified to current standards and works to approved procedures and control checks. Environmental and health & safety issues are of paramount concern to all staff working on your site. Expert consultation is always available.
ITCL offers a comprehensive 24hr in-house and on-site service
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