Rolling forming method of aluminum alloy high-tube thin-wall rings

Abstract

The invention discloses a rolling forming method of aluminum alloy high-tube thin-wall rings. The rolling forming method sequentially comprises the steps of upsetting of deformation aluminum alloy bars, punching, pre-rolling of ring blanks and final rolling of the rings, wherein after punching and before pre-rolling of the ring blanks, the steps of mandrel supporter broaching and end surface flattening are carried out on the punched ring blanks A (1). The rolling forming method has the advantages that the procedures of mandrel supporter broaching and end surface flattening are additionally carried out, the fillet size R of the punched ring blanks is decreased to be smaller than 15 mm, and therefore the distribution problem of axial deformation materials of the rings is solved; after the procedure of mandrel supporter broaching, bulging of the ring blanks is greatly reduced, the end surfaces are thickened, the contact area between the ring blanks and a home roll is increased in the external diameter direction, and unstability caused when rolling is directly carried out after punching of the ring blanks is greatly reduced.

Description

Technical field [0001] The invention relates to a rolling forming method of an annular forging, in particular to a rolling forming method of an aluminum alloy high-tube thin-walled ring. Background technique [0002] Revolving parts made of aluminum alloy used in aerospace and other fields, such as cylindrical shell forgings, etc., due to the thin wall thickness and high height of the forgings, plus the high dimensional accuracy, performance and structure requirements of the forgings , Increasing the difficulty of rolling and forming. [0003] The Chinese Invention Patent Specification CN 101279344 discloses a rolling forming method of aluminum alloy special-shaped rings. In this method, the aluminum alloy bar is subjected to upsetting, punching, and ring rolling to form a billet, and then the billet is loaded into a rolling ring die to be rolled into shape. By controlling the amount of deformation in the rolling process and each process step, the rolling performance is achieved. ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a rolling forming method of aluminum alloy high-tube thin-walled rings, which solves the problem of difficult control of material flow during rollin

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