Method of regenerating an inspection penetrant solvent

Details Method of regenerating an inspection penetrant solvent Method of regenerating an inspection penetrant solvent

1975-08-20

1976-11-02

Bashore, S. Leon

Measuring and testing

Surface and cutting edge testing

134 10, 134 12, G01N 2116, B08B 704

Patent

active

039889246

ABSTRACT:
Water solutions of certain glycol-ether-type materials having negative temperature coefficients of water solubility are used as solvent removers in an inspection penetrant process. The concentration of the glycol-ether-type material in the water is controlled and adjusted by thermostatically controlling the temperature of a solvent remover reservoir containing water and an excess of the glycol-ether-type material. Excess glycol-ether-type material separates by flotation, carrying with it any dissolved penetrant, leaving a bottom layer of purified and re-usable solvent remover solution. The top layer of glycol-ether-type material may be further purified by distillation and reflux condensation to remove contaminants of dye, penetrant, and other foreign materials.

REFERENCES:
patent: 3422670 (1969-01-01), Alburger
patent: 3554020 (1971-01-01), Fijalkowski
patent: 3751970 (1973-08-01), Alburger
patent: 3764265 (1973-10-01), Fijalkowski
patent: 3888693 (1975-06-01), Schevey et al.
patent: 3926044 (1975-12-01), Alburger
patent: 3935731 (1976-02-01), Alburger
patent: 3949601 (1976-04-01), Alburger

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