Automobile hub flange closed type precise die forging method

Abstract

The invention relates to a flange die forging method, in particular to an automobile hub flange closed type precise die forging method. The automobile hub flange closed type precise die forging methodmainly solves the technical problems that in the prior art, the effect of molding during forging is poor, a later-process is needed for multiple kinds of cutting machining, the material waste is increased, the later-process production cost is improved, and the precision-machined production efficiency is reduced, and as the follow-up multiple cutting processes damage a metal flow line, adverse effects on the product strength are caused. The method includes the steps that a medium-frequency inducing furnace is used for heating bars, and the bars at the temperature exceeding the temperature scope are automatically removed; a mechanical press is started to conducting upsetting on the bars, and drum shapes are formed through upsetting; the mechanical press is started to conduct dummying on thebars, and the length of an overall hub flange is obtained through dummying; and the mechanical press is started to conduct precision forging on the bars, a disc and all rollaway nests of the overallhub flange are obtained through precision forging, and the finished automobile hub flange is obtained after cooling.

Description

technical field [0001] The invention relates to a die forging method of a flange, in particular to a closed precision die forging method of an automobile hub flange. Background technique [0002] In the prior art, the wheel hub is mostly completed by casting means. Before casting, the casting mold needs to be preheated. To preheat the mold, the mold needs to be placed in the preheating equipment, the preheating equipment is closed, and the preheating is performed after starting the heating device. The heating operation is carried out in the equipment. Chinese patent discloses a flange die forging process (publication number: CN106694790A), which includes the following steps: S1: blanking; S2: preheating the forging die, the preheating temperature is 200 ° C ~ 250 ° C; S3: die forging In the first stage, the initial forging temperature of die forging is 1100℃~1200℃, and the cooling time between die forging is 18s~20s; S3: in the second stage of die forging, the temperature o...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a closed-type precision die forging method for the flange of an automobile hub, which mainly solves the problem of poor forming effect in forging in the prior art, and various cutting processes need to be carried out in the subsequent process, which is time-consuming and laborious. One time increases the waste of materials, increases the production cost of the subsequent process, reduces the production efficiency of finishing, and due to the subsequent various cutting processes that destroy the metal flow line, it has a negative impact on the product strength and other technical problems.

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