Chemetall’s Supramor 4 Black is a ready to use colour contrast Magnetic Ink used in the Magnetic Particle Inspection process. It is available in both aerosols and bulk. The ink has a very fine particle size, mineral oil and suspending agent in a high flash. It is used in conjunction with suitable magnetising equipment to locate fine surface and slightly subsurface discontinuities in ferromagnetic materials. Typical defects found include shrink cracks, welding defects, grinding cracks, quenching cracks and fatigue cracks. Supramor 4B gives clear black indications when viewed in daylight.
Supramor 4B is a highly sensitive oil-based product for nonfluorescent (visible) wet method magnetic particle testing to locate fine and medium discontinuities on finished parts. It has a high flash point with good particle mobility, it uses the highest grade of particles, selected for their response to very low magnetic field strengths and also low coercivity.