Electricity: measuring and testing – Magnetic – By paramagnetic particles
Patent
1977-07-05
1978-10-17
Corcoran, Robert J.
Electricity: measuring and testing
Magnetic
By paramagnetic particles
252 6252, G01R 3312
Patent
active
041211570
ABSTRACT:
A method for forming and preserving a permanent record of inspections of workpieces or the like having drilled holes or other metallic surface conformations characterized by applying a castable, plural component, magnetically active material comprised of room temperature vulcanizing, or polymerizing, rubber containing magnetizable particles and specific sensitizing agents; magnetizing the area to be inspected, so as to cause migration of the particles in the rubber before the viscosity becomes too high for the magnetized particles to migrate to the situs of an imperfection, or flaw; forming a magnetic rubber inspection replica or record of the alignment of the magnetizable particles adjacent the interface between the casting and the workpiece by increasing the viscosity of the rubber above 4000 centipoises and to flexible elastic form so as to immobilize the particles; removing the magnetic rubber inspection record thus formed and inspecting for concentrations of the magnetizable particles to delineate flaws; and carrying out post-inspection procedures. Also disclosed are specific formulations and ingredients thereof, including delineation of components that cure the problems of the prior art.
REFERENCES:
patent: 3862047 (1975-01-01), Weltman et al.
patent: 3978398 (1976-08-01), Molina
Carroll Mark T.
Halkias John E.
Kaarlela William T.
Reynolds Jack D.
Weltman Henry J.
Corcoran Robert J.
Fails James C.
General Dynamics Corporation
Schurman Charles E.
LandOfFree
Castable magnetic particle flaw detection composition and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Castable magnetic particle flaw detection composition and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Castable magnetic particle flaw detection composition and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-378064