METHOD OF DETAILS CLEANING FROM HEAT-RESISTANT ALLOYS ON BASIS OF NICKEL OF GAS TURBINE ENGINE FROM PRODUCTS OF HIGH-TEMPERATURE OXIDATION AND SULPHIDE CORROSION

摘要

FIELD: metallurgy.;SUBSTANCE: invention relates to treatment of details of gas turbine engines of nickel heat-resistant alloys and can be used in aircraft motor building, energetics and other pertinent art, where there are used gas turbine engines, and during the maintenance. Cleaning method includes treatment of details in melt of fluoride salts at the temperature from 320 up to 370°C and further treatment of details in aqueous alkaline solution under pressure from 20 up to 24 MPa at the temperature from 350 up to 450°C in blanket of inert gas, herewith in the capacity of alkaline solution it is used queous alkalines solution KOH or NaOH, or its mixture.;EFFECT: increasing of efficiency of details cleaning of heat-resistant alloys on the basis of nickel of gas turbine engine from high-temperature oxidation products and sulphide corrosion.;1 ex