Magnavis® 7HF Black Visible Magnetic Particle Wet Method Prepared Bath is designed for spot inspections of parts that, because of their size or location, must be inspected in the field.
Magnavis® 7HF is composed of 7C Black Magnaflux magnetic powder suspended in a low volatility mineral oil. It offers significant advantages in situations where bulk processing is found to be impractical and is often used in combination with WCP-2 White Contrast Paint.
General Description: Magnavis® 7HF prepared bath is intended for spot inspection for difficult to process situations where bulk processing is impractical. 7HF is supplied in aerosol containers only.
Composition: Magnavis® 7HF is composed of 7C Black Magnaflux7 magnetic powder suspended in a low volatility mineral oil.
Typical Properties: (Not a specification)
|Net Weight||300 g|
|Settling Volume||About 1.5 ml @ 60 Minutes|
|Temperature Limit||60° – 120°F|
Method of Application: Aerosol spray is the only possible method of application. First, make sure that the inspected surfaces are clean and dry. For permanently magnetized parts, shake can until agitator rattles; cover surface with spray. When using the continuous magnetizing method, fix the part in the magnetizing unit, cover the surface quickly with 7HF Black spray, and immediately magnetize the part.
Post Inspection Cleaning: Demagnetize the part, and wipe clean with rags dampened with either water or solvent. Complete removal of 7HF magnetic particle materials will be impossible if the part is not demagnetized.
Specification Compliance: ASME B & PV Code, Sec. V, ASTM E 709, ASTM E 1444, AMS 3041, AMS 3043, Boeing PS.-21201; MIL-STD-2132.