Dye penetrant method for detecting flows

Details Dye penetrant method for detecting flows Dye penetrant method for detecting flows

1974-06-17

1976-06-22

Borchelt, Archie R.

Radiant energy

Radiation tracer methods

250461R, 25230119, G01N 2138

Patent

active

039653501

ABSTRACT:
A dye penetrant composition adapted to enter minute surface defects when applied over a workpiece surface, which consists essentially of an organic dye, preferably a fluorescent dye, in a lactam solvent, particularly N-methyl-2-pyrrolidone, and providing improved clarity and definition when inspected under suitable, e.g. fluorescent, light.

REFERENCES:
patent: 2806959 (1957-09-01), De Forest et al.
patent: 3311479 (1967-03-01), Alburger
patent: 3386920 (1968-06-01), Alburger
patent: 3429826 (1969-02-01), Alburger

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