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在航空发动机设计中正确地选择和使用涂层对保证和提高机件的可靠性、耐久性和寿命至关重要。简要介绍了某机涡轮级间封严环定位槽磨损故障,阐述了超声速喷涂机理、特点和围绕使用技术条件所做的喷涂工艺试验、结合力试验、耐磨性试验、氧化试验、硬度测定和金相分析以及涂层的试车考核效果。
Correct selection and use of coatings in aeroengine design are critical to ensuring and enhancing the reliability, durability and longevity of the machine. This paper briefly introduces the abrasion failure of the positioning groove of sealing ring of turbine in a certain stage, expounds the mechanism and characteristics of supersonic spraying, the spraying technology test, the bonding force test, the abrasion resistance test, the oxidation test and the hardness test Metallographic analysis and test the test results of the coating.