Open-loop water-washable inspection penetrant process

Details Open-loop water-washable inspection penetrant process Open-loop water-washable inspection penetrant process

1974-10-08

1976-04-13

Queisser, Richard C.

Measuring and testing

Surface and cutting edge testing

G01N 2116

Patent

active

039496015

ABSTRACT:
A water-washable inspection penetrant process in which the penetrant is recovered for re-use and the used wash water remains sufficiently pure to be discharged into water disposal systems without causing excessive environmental pollution. A non-surfactant-type low-solubility penetrant which has been applied to test parts is wash-removed, leaving penetrant entrapments in crack defects. The thus-removed penetrant is separated from the wash water by allowing the mixture of water and removed penetrant to stand in a holding tank, whereupon the dispersed penetrant separates from the wash water and floats to the surface where it is collected for re-use. The relatively pure water is drawn from the bottom of the holding tank and is discharged into a water-disposal system.

REFERENCES:
patent: 2953530 (1960-09-01), Switzer
patent: 3528284 (1970-09-01), Skoglund
patent: 3764265 (1973-10-01), Fijalkowski
patent: 3814695 (1974-06-01), Molina

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