In the aero engine design process,due to the structure,use and maintenance,etc.,a considerable number of components and components need to be connected to each other.Therefore,a fastener for joining two or more zeros and components into one unit is an essential component in engine design.Due to the special working environment of the aero-engine,the fastening connectors used must have good reliability and sufficient life to withstand the harsh environmental conditions and load changes to ensure safe and efficient flight.
In recent years,with the rapid development of aerospace technology,the increase of foreign cooperation and exchange,many new foreign connection structures and the theory of forming and strengthening have been introduced and applied,and the fastener connection technology has developed rapidly.However,due to the limitations of domestic processing conditions and process levels,many new types of fasteners are not widely used,and most of them are purchased abroad.Until recently,specialized production has been continuously strengthened,new materials and new processes have been continuously adopted,the manufacturing level of fasteners has been greatly improved,and the design and application of new fasteners have become more extensive and diversified.
Threaded connectors are the most important type of fastener,and the reliability of the threaded connection is critical.The bolted connection is simple in construction,easy to install and widely used.
