PREPARATION INSTRUCTIONS
Oil Bath: Weigh out the appropriate amount of MG-410 and add to the appropriate amount of oil vehicle. Mix for a minimum of 15 minutes, until the particles are completely and evenly dispersed in the suspension. Check concentration before use.
Water Bath: In water-based suspensions, conditioning agents are required to improve particle suspendibility, mobility, and surface wetting. Measure out the appropriate amount of water conditioner, add to water and mix for 5 minutes. Next, measure out the appropriate amount of MG-410 magnetic particles and add particles to the conditioned water. Add particles directly over the pump for more rapid dispersion. Mix for 15 minutes or until the particles are completely dispersed. Check particle concentration before use.
INSTRUCTIONS FOR USE
Use MG-410 with appropriate magnetization procedure and equipment. All components, parts, or test areas should be cleaned prior to testing to provide a suitable test surface and reduce particle suspension contamination. Particle suspension can be applied by gently spraying or flooding the components, parts, or test areas. The suspension must be properly mixed and continuously agitated when in use to ensure uniformity and concentration. Particles will settle out of suspension very quickly on standing.
Maintenance Recommendations
Magnetic particle suspensions need to be properly maintained to provide consistent results. Suspension concentration and contamination should be monitored at least once a day, or according to applicable specifications. Contaminated suspensions, or those in use for an extended length of time, should be replaced. Properly cleaning all components, parts, or inspection areas before testing helps to significantly reduce particle suspension contamination.
Particle concentration should be determined after initial bath preparation and at least once a day, or according to applicable specifications, to maintain the proper level of particles in the suspension. The most widely used method of control is by settling volume measurement in a graduated ASTM pear-shaped centrifuge tube. For testing MG-410, Magnaflux centrifuge tube 507923 is recommended: 100 ml capacity, stem graduated from 0 to 0.2 mL in 0.01 mL increments.
REMOVAL
All components, parts, or inspection areas must be properly demagnetized before cleaning to ensure easy particle removal. Cleaned parts may be treated with a temporary film protective coating if longer corrosion protection is required.
