CONTACT LIQUID FOR ULTRASONIC TESTING Russian patent published in 2018 - IPC G01N29/28 G01N29/00 G01N29/04 

FIELD: chemistry.

SUBSTANCE: invention discloses contact liquid for ultrasonic testing, which contains a metal chloride or mixture of metal chlorides with low freezing temperature in the aqueous solution, liquid glass, polyacrylamide, anticorrosive additives and water. It further comprises a metal formate or a mixture of metal formates with low freezing temperature in the aqueous solution, propylene glycol and glycerine, at the following component ratio, wt %: metal chloride or a mixture of metal chlorides with low freezing temperature in the aqueous solution 3.0-25, 0; metal formate or a mixture of metal formates with low freezing temperature in the aqueous solution 0.4-8.0; propylene glycol 0.5-15.0; glycerine 0.5-7.0; liquid glass 0.1-8.0; polyacrylamide 0.1-0.8; anticorrosive additives 1.0-10.0; water - the rest.

EFFECT: ensured reliable acoustic contact with the monitored object in a wide range of operating temperatures and speeds of the defectoscopic cart, a possibility of long-term storage of contact fluid in the absence of special requirements for storage conditions.

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