METHOD FOR STRIPPING HEAT-RESISTANT COATINGS FROM METAL SUBSTRATE OF SOLID ALLOYS Russian patent published in 2022 - IPC C25F5/00 

Abstract RU 2764042 C2

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of electroplating and can be used in mechanical engineering, aviation and power turbine construction in repair of blades and other parts of turbines. The method includes treatment of a substrate in form of a blade in an electrolytic-plasma mode using a pulsed current at a supply voltage frequency of 50 Hz, wherein the blade is treated at an electric potential of 150 to 600 V with bipolar pulses of 10-50 mcs in duration for anode pulses and 40-200 mcs for cathode pulses in an electrolyte containing a water solution of a mixture of hydroxylamine hydrochloride from 5 to 100 g/l and sodium fluoride NaF from 5 to 50 g/l.

EFFECT: increased rate of stripping the coating with maintained geometry of the blade.

1 cl, 1 dwg, 1 tbl, 3 ex

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RU 2 764 042 C2

Authors

Zagonenko Vitalij Fedorovich

Kozlova Yuliya Vladimirovna

Bulan Igor Vadimovich

Dates

2022-01-13Published

2019-09-27Filed