Method and composition for detecting flaws in magnetizable...

Details Method and composition for detecting flaws in magnetizable... Method and composition for detecting flaws in magnetizable...

G - Physics

01

M

73/178

G01M 99/00 (2011.01) G01N 27/84 (2006.01)

Patent

CA 1147576

ABSTRACT Method and composition for non-destructive testing of a magnetizable workpiece wherein the surface of the work- piece is treated with an aqueous emulsion of a waxy solid having fluorescent magnetizable particles suspended there- in, a magnetic field is created along the workpiece so that the magnetizable particles are attracted to imperfections therein, and then sufficient water is removed from the emulsion so that the waxy solid forms a film which con- tains the immobilized fluorescent particles which have become attached to imperfections in the workpiece. The film may be further protected by the application of finely divided abrasion resistant particles, such as glass beads or glass powder.

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