Processing method for controlling processing deformation of titanium-aluminum alloy thin-wall case

Abstract

The invention relates to a processing method for controlling processing deformation of a titanium-aluminum alloy thin-wall case. The technical scheme of the processing method is as follows: the processing method comprises the steps as follows: a primary rough turning process, a primary heat treatment process, a secondary rough turning process, a secondary heat treatment process, a fine turning process, a third heat treatment process and a finish turning process. According to the processing method for controlling the processing deformation of the titanium-aluminum alloy thin-wall case, reasonable processing parameters are set, and an appropriate cutter is used, so that the processing deformation of the titanium-aluminum alloy thin-wall case is controlled, and the processing requirement is met.

Description

Technical field [0001] The invention relates to a processing method of parts, in particular to a processing method for controlling the processing deformation of a titanium aluminum alloy thin-walled casing. Background technique [0002] A titanium-aluminum alloy thin-walled casing for aero engines. The parts are made of forgings. Due to the special structure of the parts, strict dimensional tolerances, very large removal margins, and high material hardness, it is extremely difficult to process and the parts are easy to process. Deformed. The inlet width of the cavity part of this part is only 24mm, the maximum cavity depth reaches 55mm, and it is a thin-walled surface. Because the groove is too deep, there is no suitable tool to process; the part structure is special, the part and the tool are easy to process In the event of a collision, the tool travel path is unsafe; the part material is hard and the tool wear is serious, and the machining accuracy cannot be guaranteed; the pa...

AI Technical Summary

Problems solved by technology

[0002] A titanium-aluminum alloy thin-walled case of an aero-engine. The raw material of the part is forging. Due to the special structure of the part, strict dimensional tolerance requirements, a very large removal allowance, and high hardness of the material, it is extremely difficult to process, and the part is easy to process during processing. produce deformation

The entrance width of the cavity of this part is only 24mm, the maximum depth of the cavity reaches 55mm, and it is a thin-walled surface. Because the groove is too deep, there is no suitable tool for processing; the part has a special structure, and the part and the tool are easy to process during processing. If there is a collision, the tool trajectory is unsafe; the material of the part is hard, the tool wear is serious, and the machining accuracy cannot be guaranteed; the wall of the part is thinner during the finish turning (the wall thickness after cavity processing is 2mm), and the part is easy to produce when the surface is processed. out of shape

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