Introduction
Magnetic particle testing is called "magnetic flux leakage testing" because this technology is based on the leakage of magnetic flux on the surface or near the surface of the material.
Details
Magnetic particle testing is called "magnetic flux leakage testing" because this technology is based on the leakage of magnetic flux on the surface or near the surface of the material.
In magnetic particle testing, a magnetic field is usually used to induce magnetic flux leakage in the material. When there are cracks, defects, looseness or other undesirable conditions on the surface of the object being tested, these problems will cause the magnetic field in the material to change, causing "magnetic flux leakage" of the magnetic field.
Then by applying a magnetic field. If there are cracks, defects or other problems, these areas will cause magnetic field leakage. The specific steps include coating magnetic particles (magnetic powder) on the surface of the object being tested, so that the coated magnetic powder gathers in these areas to form visible magnetic powder traces,
Therefore, the term "magnetic flux leakage testing" emphasizes that this detection technology is to detect potential defects or problems by detecting magnetic flux leakage on the surface of the material. This method is very effective for detecting defects such as cracks, cracks, looseness, etc. on the surface or near the surface of metal products, and it is a non-destructive detection method.
