Production method of GH5188 square exhaust nozzle used for aircraft engine

Abstract

The invention discloses a production method of a GH5188 square exhaust nozzle used for an aircraft engine. The production method comprises the steps of blanking, heating, heading, punching, rolling and the like, wherein a ring blank obtained by rolling is extruded into a square billet by adopting a squaring process, and a mandrel supporter and a square saddle are adopted to form the exhaust nozzle finally. The production method has the following beneficial effects that blank production adopts bending after rolling, the wall thickness is uniform and segregation is accurate, so that the wall thickness is uniform after a forge piece is formed, and the utilization rate of raw materials is improved; rolling is adopted during blank production, the mandrel supporter and the square saddle are adopted during forming, and rolling and forming processes are optimized, so that the forge piece has uniform tissue and stable mechanical property, and the service life is prolonged.

Description

technical field [0001] The invention relates to a method for manufacturing a GH5188 square exhaust nozzle for an aero-engine. Background technique [0002] GH5188 is a solid-solution-strengthened cobalt-based superalloy. Adding tungsten for solid-solution strengthening makes the alloy have excellent high-temperature thermal strength. Adding a high content of chromium and trace element lanthanum makes the alloy have good high-temperature oxidation resistance and satisfactory Excellent molding, welding and other process performance, suitable for making parts on aero-engines that require high strength below 980°C and anti-oxidation below 1100°C, and can also be used on aerospace engines and space shuttles. The alloy is widely used in foreign countries to make high-temperature components of gas turbines and missiles, such as combustion chambers, exhaust nozzles, and heat exchangers in the nuclear energy industry. High-temperature components such as blades have passed the long-t...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a manufacturing method of GH5188 square tail nozzles for aero-engines to solve the problem of low material utilization rate, uneven structure of parts, unstable mechanical properties and service life of parts in the production of GH5188 square tail nozzles for aero-engines. Short and other questions

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