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Magnetic Particle Testing is a Conventional Non-Destructive Testing Method for detection of imperfections on or just below the surface of ferrous metals. It is a quick and reliable NDT technique for detection and location of surface cracks.
Magnetic Particle Testing can be used for all ferrous metals, such as carbon steel, low-alloy and cast iron. The main use of Magnetic Particle Inspection and Testing is for welds and heat affected zones. It can be applied to relatively rough and dirty surfaces but flaw sensitivity is decreased for this. Fluorescent particles can be used when maximum sensitivity is required.
A magnetic flux will be sent through the material. At the location of the imperfection a leakage field will be formed. This attracts metal iron dust, which will be sprayed onto the surface area. The length of the imperfection can be calculated very reliable. The NDT method Magnetic Particle Testing does not indicate the depth of the imperfection.
This Inspection Method can be applied to raw material in a steel mill, in the early stages of manufacturing, or most commonly to machined components before they are put into service. It is also used for inspecting structural parts that have already been in-use to find fatigue cracks. Usually tested parts need to be demagnetized before put into service again.
Magnetic Particle Testing is an easy and quite economic Non-Destructive Test.
Besides this, SGS Industrial Services provides relevant NDT/NDE training courses. Experienced instructors share knowledge that complies with guidelines and local and international NDT/NDE standards, such as e.g. ASNT and EN 473.
Click here for more Information or a Quotation on NDT Magnetic Particle Testing.
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