| 摘要 |
FIELD: engines and pumps.SUBSTANCE: blades surface is prepared by machining of the defected places, by the blade sand blasting, cleaning and degreasing. To the entire surface of the blade body the underlayer of self-fluxing nickel-based alloy, for example "??-?80?13?2?", with thickness up to 0.2 mm is applied by microplasma spattering, the alloy plays the role of heat-resistant solder. At that surface of the defected places is levelled with the rest surface. Surface of the said underlayer is subjected to the sand blasting. By plasma method layer of the heat-resistant material is spattered, for example "????", with thickness up to 0.6 mm with assurance of the specified blade profile. The blades with the applied coatings are heat treated in vacuum by heating to temperature of liquidus of the self-fluxing alloy, and holding at this temperature for 3-5 minutes.EFFECT: increased operation properties of blades due to improved adhesion strength of the sputtered layer of the heat-resistant material.3 cl, 1 dwg, 1 ex |
