Manufacturing method of engine inlet

Abstract

Provided is a manufacturing method of an engine inlet. The process method comprises the steps of uncapping subsection casting, casting pre-welding machining, vacuum electron jet assembling and welding, sizing destressing vacuum annealing, overall machining, hydrostatic testing and overall precise machining; an engine thin-wall titanium alloy component with the profile of a surface being less than or equal to 0.1mm, the surface roughness being less than or equal to Ra3.2, the dimensional precision being less than or equal to 0.2mm, and the form and location tolerance meeting design requirements is machined and manufactured. The manufacturing method overcomes defects in the prior art, meets all design requirements, resolves the problems of deformation, poor surface quality and poor dimensional precision which cannot be overcome by other machining methods, and is advanced and reasonable in technological process, smooth in technological production line, and especially suitable for developing and producing various engine thin-wall titanium alloy components.

Description

technical field [0001] The invention relates to the field of engine manufacturing, in particular to a method for manufacturing an engine intake duct. Background technique [0002] An engine intake is an important part of the engine, which provides the required air flow for the engine and ensures the quality of the output airflow. The engine inlet is a casing made of titanium alloy. Its inner cavity has a complex structure and the wall thickness of the casing is less than 2mm. The manufacturing accuracy of the engine inlet will directly affect the engine performance index. The above characteristics and requirements have brought many problems to the processing and manufacturing of the engine inlet. Therefore, in the development process of the engine, this type of thin-walled titanium alloy parts has always been the key research object. Many countries have carried out a lot of research work for this. Countries with relatively advanced technology include the United States, Russ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the existing manufacturing methods of thin-walled titanium alloy parts, such as processing deformation, large surface contour accuracy deviation, poor dimensional accuracy, low surface quality, and shape and position tolerances that cannot meet the design requirements, the invention proposes an engine intake way of making