Manufacturing method of aluminum alloy combined pipe for automobile gas spring

Abstract

The invention discloses a manufacturing method of an aluminum alloy combined pipe fitting for an automobile gas spring. The aluminum alloy combined pipe is composed of an aluminum alloy special-shapedpipe for the automobile gas spring and an aluminum alloy circular pipe for the automobile gas spring, wherein one end of the aluminum alloy circular pipe for the automobile gas spring is fixedly welded in the aluminum alloy special-shaped pipe for the automobile gas spring in a sleeved mode, and the aluminum alloy special-shaped pipe for the automobile gas spring has two structures that an outercontour is of a five-tooth pattern structure and an inner contour is of a seven-tooth pattern structure. According to the manufacturing method, a prepared product has the advantages of good plasticityand mechanical properties, high machining precision and good surface quality, technical indexes such as the tensile strength, the yield strength, the elongation rate, the outer diameter true roundness and the inner diameter true roundness of the product are superior to those of the requirement values, the product has been sold to medium and large automobile manufacturers in Europe, in America, athome and at abroad, so that blanks at home and abroad are filled in for aluminum alloying of the gas spring.

Description

technical field [0001] The invention relates to the design and manufacturing process of the alloy composition of an aluminum alloy profile, in particular to a method for manufacturing an aluminum alloy round tube and an aluminum alloy special-shaped tube, which can replace steel materials and be used as a gas spring component—piston rod to play a role Telescopic fixation. Background technique [0002] Gas spring is an industrial accessory that can perform functions such as support, buffer, brake, height adjustment and angle adjustment. It consists of the following parts: pressure cylinder, piston rod, piston, sealing guide sleeve, filler (inert gas or oil-gas mixture), in-cylinder control element and out-of-cylinder control element (referring to controllable gas spring) and joints, etc. The principle is to fill the closed pressure cylinder with an inert gas or an oil-gas mixture, so that the pressure in the cavity is several times or dozens of times higher than the atmosphe...

AI Technical Summary

Problems solved by technology

[0005] At present, the plasticity and mechanical properties of aluminum alloy materials appearing on the market are poor, and the processing accuracy is low, and the surface quality is not good, so it is difficult to meet the high-quality requirements of aluminum alloys for automotive gas springs.

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