Rolling process method for large aluminum alloy fork-shaped section ring piece

Abstract

The invention discloses a rolling process method for a large aluminum alloy fork-shaped section ring piece. The outer surface of an adopted ring blank is flat and straight, and the inner surface of the adopted ring blank is provided with a circumferential groove shape used for being attached to a core roller; a fork-shaped structure of the ring blank is arranged downwards, and the lower end face of the fork-shaped structure is provided with an oblique angle; an adopted driving roller is in a flat and straight shape, and the outer surface of the core roller is matched with the inner surface of a designed ring forging; the core roller is provided with a flange, and the upper end face of the flange is provided with an oblique angle; the oblique angle of the flange can offset the axial unbalance loading of the oblique angle of the fork-shaped structure; when the core roller is installed, the outer edge of the bottom end of the oblique angle of the flange is lower than the plane of a workbench, and the top end of the oblique angle of the flange is higher than the plane of the workbench; the oblique angle of the fork-shaped structure makes contact with the oblique angle of the flange; and the lower end of the outer edge of the ring blank is naturally pulled and contracted in the rolling process through the space formed by the oblique angle of the flange and the oblique angle of the fork-shaped structure, the attaching length of the driving roller and the ring blank is reduced, and therefore needed radial rolling force is reduced. According to the method, rolling of the large aluminum alloy fork-shaped section ring piece can be completed through an existing horizontal ring rolling mill, process adjustment is simple, using is easy, and stability is good.

Description

technical field [0001] The invention belongs to the field of metal material processing, and in particular relates to a rolling process method of a large aluminum alloy fork-shaped cross-section ring. Background technique [0002] Aluminum alloy fork-shaped cross-section rings are a very typical type of rings with very complex cross-sectional shapes. They are widely used in the aerospace industry and have several series of diameter sizes. Large and difficult to manufacture. At present, the manufacturing process of aluminum alloy fork-shaped cross-section rings is to first carry out rolling of rectangular cross-section rings, and then perform a large number of subsequent machining to obtain fork-shaped cross-section rings, which not only wastes raw materials, but also greatly increases the manufacturing cycle. [0003] In order to meet the lightweight requirements of aerospace, the degree of alloying of new aluminum-copper and aluminum-lithium alloys has been increased, which...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a large-scale aluminum alloy fork cross-section ring rolling process, which aims at the problems of insufficient rolling force, unstable rolling process, and excessive axial eccentric load of existing horizontal ring rolling mills. , the rolling production of large aluminum alloy fork-shaped cross-section rings can be completed by using the existing horizontal ring rolling mill. The process adjustment is simple, easy to use, and good stability

Images