A rolling forming method of an aluminum alloy high-tube thin-walled ring

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 a ring forging, in particular to a rolling forming method of an aluminum alloy high-tube thin-walled ring. Background technique [0002] Rotary components used in aerospace and other fields made of aluminum alloy, such as cylindrical shell forgings, etc., due to the thinner wall thickness and higher height of the forgings, and the higher dimensional accuracy, performance and organization requirements of the forgings , increasing the difficulty of roll forming. [0003] Chinese invention patent specification CN 101279344 discloses a rolling forming method of an aluminum alloy special-shaped ring. In this method, the aluminum alloy bar is subjected to upsetting, punching, and ring rolling to make a billet, and then the billet is put into a ring rolling die and rolled into shape. By controlling the rolling process and the deformation in each process step, the rolled out performance Good shaped ring pi...

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 rolling of aluminum alloy high-tube thin-walled rings in the prior art, rolling deviation, and bell mouth and ring. The wall thickness at both ends of the part is too thin to meet the technical requirements, etc.

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