Magnetic Particle Inspection | Liquid Penetrant Inspection
Ardrox Magnetic Particles Wet Method
Magnetic particle testing is a non-destructive testing method in order to detect surface and sub-surface irregularities in ferrous parts. As a first step a magnetic field is put into the part tested. The magnetization can be direct (electrical current is passed through the test object) or indirect (magnetic field is applied from an outside source). Ferrous iron particles (dry / wet suspension) are then applied to the part. In case of an area of flux leakage, the particles are attracted to this area and form an ‘indication’. The inspection can be performed under UV(A) or white light, depending on the type of MT product used: fluorescent or black magnetic ink.
White Contrast Paint
Black Magnetic Suspension
Fluorescent Magnetic Particles
Liquid Penetrant Inspection
Penetrant testing is a well-recognized inspection method to detect e.g. casting, forging and welding surface defects such as cracks, overlapping, folds, pinholes or other bonding failures. The so called ‘penetrant system’ consists of the penetrant itself, a penetrant remover and finally a developer, which helps to increase the contrast and pull out the remaining penetrant at the end of the inspection process. Whereas fluorescent penetrants are required for the part inspection under UV(A) light, color-contrast penetrants are widely used for the inspection under white light.
Water washable Penetrant