Low-pressure turbine magazine is a key part of the static part of the low-pressure compressor power turbine component of the aero-engine, and its main function is to constrain the low-pressure turbine guide blade assembly and serve as the assembly reference of the low-pressure turbine guide.

Structural Characteristics

Large thin-walled multi-hole and multi-groove structure: the low-pressure turbine box is usually bowl-shaped, a typical large conical, large-height shaped ring, with large and small head cross-sectional area difference, thin wall thickness of the part and other characteristics. Due to its structural characteristics, the low-pressure turbine magazines are very easy to be deformed during the manufacturing process due to the internal residual stress redistribution and other reasons, thus affecting the performance of the aero-engine.

Integral conical structure: In some advanced aero-engines, such as the CFM56-3 engine, the low-pressure turbine magazine is made of Incol718 (IN718) alloy into an integral conical structure, with a number of grooves on the inner wall to fix the guide vanes.

Material Selection and Manufacturing Process

High-quality materials: low-pressure turbine magazines are usually made of high-strength, high-temperature-resistant, corrosion-resistant high-quality materials, such as IN718 alloy. These materials can ensure the stable performance of the magazine under the extreme environment of high temperature, high pressure and high load.

Advanced Manufacturing Processes: The manufacture of low pressure turbine magazines involves a variety of advanced processes such as precision forging, rolling and heat treatment. For example, the low-pressure turbine casing produced by adopting shaped billet expansion billet technology, precision rolling forming process control technology for large taper ring parts, and low-stress manufacturing technology for large taper precision ring parts has good forming effect, the size meets the requirements of parts processing, and the forging parts have even stress distribution and good organization uniformity.

Application and importance

Widely used: low-pressure turbine magazines are widely used in various types of aviation engines, which is one of the key components to ensure normal engine operation and improve engine performance.

Importance: The performance of low-pressure turbine magazine directly affects the overall performance and reliability of the aero-engine. If the magazine is deformed or damaged, it will seriously affect the working efficiency and safety of the engine.

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Application: RB3043-Gulfstream Business Jet

Material: IN718

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Material: waspaloy

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Material: IN718