Institute of aviation materials in the powder metallurgy of "vortex spray a" engine heat seal materials research, progress was made on the material, the technology research of this aspect plays a certain role. Anyhow, powder metallurgy engine hot seal in China was still in the stage of research and test, to further advance this aspect of the work is very useful.

      Working conditions and material conditions soviet-made type aeroengine guide seal material is the first step on the gas temperature working conditions, gas pressure, gas flow velocity, the relative speed rotating parts, rotating clearance, one-time continuous work time, total working time, kerosene in the compressed air in the combustion of fuel gas, combustion of kerosene for aviation kerosene, brand a. Material selection in order to guarantee the life of the turbines within the prescribed period can work normally, heat seal material shall meet the following requirements in work flow medium has the oxidation resistance and corrosion resistance in ensure adequate installation and working strength, soft, no damage to the rotor, the gas works with unbonded phenomenon of gas high anti-friction resistance, low friction coefficient and wear good running in linear expansion coefficient is close to dovetail slot material.

       According to the requirements of the materials work, choose a as the base, and add test, high temperature resistant group material specific components are shown in table. According to the selected material preparation powder, vacuum sintering, after pressure by forming after processing into finished products in each process, for assessment of performance testing and commissioning. Commissioning choose density of appraisal, finished product installed test examination, model for type 1 soviet-made aircraft engines, total installed two sets compare test, the more horsepower equivalent test showed that the powder metallurgy new high-temperature seal completely up to the former Soviet union product quality level, conform to the requirements of the design and use, after commissioning, soviet-made seal material is slight erosion and falling phenomenon, and test new materials without any abnormal phenomenon.

       Falling in to a high bending strength, compressive strength, seal materials test provided by powder metallurgy new material with heat seal (after commissioning, continuous production TaiFen, tested and approved by the multiple bench test showed that the quality is stable, the craft is stable according to the material properties of materials, the material can be used in gas turbine, steam turbine aircraft engine heat seal, working temperature, the working life in the above.