Breaking down the definitions of particle, micron, and the debate if magnetic particle size has an effect in magnetic particle inspection.
What is a fluorescent magnetic particle?
A fluorescent magnetic particle is a mixture of three elements in which each component serves a particular purpose:
- Iron: provides ferrous material to force particle movement when electrically charged by magnetic fields
- Fluorescent pigment: what glows brightly underneath ultraviolet lights
- Resin: binds these two materials together and keeps them from breaking apart over time, ensuring that fluorescent material does not leak into the bath and cause excess background.