Machining method for thin and thin-walled aluminum-matrix composite pipe with uniform wall thickness

Abstract

The invention provides a machining method of an elongated thin-wall aluminum-based composite material pipe with uniform wall thickness. The machining method comprises the following steps that firstly,rough turning is carried out on an outer circle of the aluminum-based composite material pipe; secondly, destressing heat treatment is carried out, then an inner hole is roughly bored by using a special tool, then destressing heat treatment is carried out again, then destressing heat treatment is carried out after the outer circle of the aluminum-based composite material pipe is subjected to semi-finish turning, then a special tool is used for finely boring the inner hole, and finally finish turning is carried out on the outer circle. According to the machining method of the elongated thin-wall aluminum-based composite material pipe with the uniform wall thickness, the large length-diameter ratio thin-wall pipe can be produced, and the wall thickness uniformity, straightness and coaxiality can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of processing thin-walled aluminum-based composite material pipes, and in particular relates to a mechanical processing method for thin-walled thin-walled aluminum-based composite material pipes with uniform wall thickness. Background technique [0002] Aluminum-matrix composite material with large aspect ratio and thin-walled pipe is an important aluminum-matrix composite composite structural part, which can be used in aerospace, mechanical electronics, weaponry and other industries. Due to the large length-to-diameter ratio and low stiffness of slender and thin-walled pipes, it is difficult for conventional machining methods to ensure the uniformity of wall thickness, coaxiality, and straightness of the pipes after machining, which affects the service performance of the pipes. [0003] At present, the production method of thin-walled aluminum-based composite pipes is mainly to provide pipe blanks by hot ex...

AI Technical Summary

Problems solved by technology

Due to the large length-to-diameter ratio and low rigidity of slender and thin-walled pipes, conventional machining methods are difficult to ensure the uniformity of wall thickness, coaxiality, and straightness of the pipes after machining, which affects the service performance of the pipes

[0003] At present, the production method of thin-walled aluminum-based composite pipes is mainly to provide pipe blanks by hot extrusion, and then obtain finished pipes of required specifications through cold drawing or cold rolling. However, thin-walled pipes are prepared by combining rough pipes with cold drawing or cold rolling method, it is difficult to produce thin-walled pipes with large length-to-diameter ratio, and it is difficult to guarantee the uniformity of wall thickness, straightness and coaxiality

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