Manufacturing process of aluminum alloy water-drop-shaped thin-wall tubular material

Abstract

The invention provides a manufacturing process of an aluminum alloy water-drop-shaped thin-wall tubular material, comprising the following steps of: 1) extruding: extruding a casting ingot into a circular tube blank; 2) rolling and annealing: carrying out annealing treatment on the circular tube blank; 3) rolling: rolling the circular tube blank and reducing the diameter and the wall thickness of the circular tube blank; 4) reducing the diameter and annealing: carrying out annealing treatment on the circular tube blank with the reduced diameter; 5) stretching: stretching the circular tube blank with the reduced diameter and stretching into a water-drop-shaped tube finished product; 6) quenching: carrying out quenching treatment on the water-drop-shaped tube finished product; and 7) stretching and strengthening: carrying out stretching and strengthening on the water-drop-shaped tube finished product. According to the manufacturing process, the circular tube blank is obtained by extruding the casting ingot; the manufacturing of the water-drop-shaped thin-wall tubular material can be realized through direct molding of a rolling and stretching process of the circular tube blank; the subsequent machining is reduced and the metal utilization rate is improved; and the machining difficulty is reduced and the machining time is shortened, so that the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy pipe manufacture, and more specifically, relates to a production process of an aluminum alloy drop-shaped thin-walled pipe. Background technique [0002] The drop shape refers to an irregular curved shape that is similar to a water drop and connected by a series of coordinate points. Thin-walled tubes refer to aluminum alloy seamless tubes with a wall thickness of ≤ 5 mm obtained by rolling or stretching. Such as figure 1 As shown, this figure is a schematic diagram of the cross-sectional shape of a drop-shaped thin-walled pipe produced by the production process of the aluminum alloy drop-shaped thin-walled pipe provided in the embodiment of the present invention. Aluminum alloy drop-shaped thin-walled pipes are mainly used in the manufacture of seaplane wings. [0003] At present, aluminum alloy drop-shaped pipes can only be obtained by machining solid rods. Since the wall thickness of ...

AI Technical Summary

Problems solved by technology

[0003] At present, aluminum alloy drop-shaped pipes can only be obtained by machining solid rods. Since the wall thickness of water-drop-shaped pipes is relatively thin, users use fixed-length lengths, so they can only be machined on large-scale CNC centers. The amount of metal cutting Larger, lower metal utilization rate, and increases the difficulty of mechanical processing, the processing time is longer

Moreover, the above-mentioned processing method can only produce drop-shaped pipes with larger wall thickness at present.

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