Near net-shape rotary swaging manufacturing method for wheel rim

Abstract

The invention relates to a near net-shape rotary swaging manufacturing method for a wheel rim. An aluminum alloy material prepared in advance is cast into a rough wheel rim blank. The rough wheel rim blank is provided with a wheel disc, a plurality of wheel ring arms, a wheel rim wall and an axial line. Forging is performed so that the average particle of the wheel disc and the wheel rim arms obtained after solid solution thermal treatment is smaller than 30 micrometers. At least one of recrystallization and solid solution thermal treatment is performed on the rough wheel rim blank, and spinning is performed so that a trunk portion surrounding the axial line can be formed on the wheel rim wall. At least one of size stabilization treatment and aging thermal treatment is performed on the rough wheel rim blank; and finally, an air tap hole is formed in the wheel disc, and turning and surface treatment are performed on the wheel rim arms and the wheel rim wall so that the wheel rim is formed through rotary swaging. Accordingly, the near net-shape rotary swaging manufacturing method has the beneficial effects that the manufacturing cost is greatly lowered, and the customized degree of materials is high; and the machined size is flexible so that the inventories can be reduced, and the structural strength can be improved.

Description

technical field [0001] The invention relates to a near-shape forging and spinning manufacturing method of a wheel rim, especially a near-shape forging and spinning manufacturing method of a wheel rim that can greatly reduce manufacturing costs, have a high degree of material independence, and can reduce inventory due to the flexibility of processing dimensions, and can improve the structural strength of the wheel rim. Form forging and spinning manufacturing method. Background technique [0002] The traditional forged rim adopts continuous casting method (DC Casting) (such as figure 2 The cast spinning wheel rim 71 shown) needs to prepare (cast alloy smelting 72) several cast base materials 81 with predetermined length (such as figure 1 shown), and then spinning after high-pressure forging. The casting method is as follows: [0003] 1. Continuous casting (preparation of rim casting blank 73 by low-pressure casting) and extruding and cutting the casting base material 81; ...

AI Technical Summary

Problems solved by technology

[0015] In order to solve the problems of high cost, time-consuming processing, difficulty in forming large-size rims, difficulty in forming complex-style rims and poor precision in traditional methods, the present invention provides a close-shaped forging and spinning manufacturing method for rims, which combines It has the advantages of greatly reducing manufacturing costs, high degree of material autonomy, flexibility in processing dimensions, reducing inventory, and improving structural strength

Images