High-temperature sealing gum capable of being used at 700 DEG C and application method of high-temperature sealing gum

Abstract

The invention discloses high-temperature sealing gum capable of being used at 700 DEG C. The high-temperature sealing gum is prepared from the components in percentage by mass: 50%-65% of a sealant, 8%-15% of aluminum oxide, 14%-20% of titanium dioxide, 4%-8% of ferric oxide, and 6%-11% of distilled water. The invention further discloses an application method of the high-temperature sealing gum capable of being used at 700 DEG C. The high-temperature sealing gum has good heat resistance, sealing property and corrosivity and is suitable for sealing of corresponding high-temperature parts of aircraft engines.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a high-temperature sealant that can be used at 700°C and an application method thereof. Background technique [0002] In an aero-engine, there are always gaps between the joint surfaces of its parts. In order to ensure the normal operation of the engine and maintain the normal operating pressure and safety of the system, the joint surfaces must be aligned and sealed to prevent oil leakage, air leakage, water leakage, etc. The sealant is mainly used in parts where the sealing gap is very small, such as the joint surface between the rear mounting edge of the casing and the inner mounting edge of the guide (including the adjusting ring), the joint surface of the inner ring of the guide and the cyclone, and the oil leakage valve (housing, Gaskets, valves) thermocouples, nozzles, pressure sensors and other components; imported sealants are used in the prior art, and imported mater...

AI Technical Summary

Problems solved by technology

[0002] In an aero-engine, there are always gaps between the joint surfaces of its parts. In order to ensure the normal operation of the engine and maintain the normal operating pressure and safety of the system, the joint surfaces must be aligned and sealed to prevent oil leakage, air leakage, water leakage, etc. The sealant is mainly used in parts where the sealing gap is very small, such as the joint surface between the rear mounting edge of the casing and the inner mounting edge of the guide (including the adjusting ring), the joint surface of the inner ring of the guide and the cyclone, and the oil leakage valve (housing, Gaskets, valves) thermocouples, nozzles, pressure sensors and other components; imported sealants are used in the prior art, and imported materials take time to order, produce, and customs, and will be affected to varying degrees by temperature differences; Moreover, the colloid is a fluid, and there are hidden dangers in the transportation process.