Forging forming process of rotating shafts for locomotive

Abstract

The invention provides a forging forming process of rotating shafts for a locomotive. The forging forming process comprises the following steps of a, blanking, wherein raw materials are selected by taking appropriate specifications of the drawing length of a small-diameter rod and the upsetting height-diameter ratio of a large-diameter end as references; b, machining, wherein the raw materials areheated, the length of the raw materials which need to be drawn are positioned through a positioning device, and a preformed billet is formed by drawing the rod through a clamping die; and c, forging,wherein the preformed billet is put into a forming die and subjected to upsetting, and then a final forged part is obtained. According to the forging forming process of the rotating shafts for the locomotive, a distributed forging and local forming forging method is adopted, that is to say, a drawing process is adopted for the rod of the forged part, and an upsetting process is adopted for an endround cake, so that the production cost is low, and the die abrasion loss is low.

Description

technical field [0001] The invention relates to the technical field of forging, in particular to a forging forming process of a rotating shaft for a locomotive. Background technique [0002] At present, the difference between the maximum outer diameter and the minimum outer diameter of the rotating shaft for locomotives is more than 5 times. The small batch production of the same type of products is mainly manufactured by free forging and then mechanical processing. The large batches of the same type of products can also be manufactured by radial (rotation) The method of forging molding or casting molding. [0003] The method of free forging and then mechanical processing has large machining allowance, low material utilization rate and long manufacturing time; the method of radial (rotary) forging molding has long processing time and high noise, and requires special equipment for forging, which is only suitable for large Mass production; products formed by casting molding h...

AI Technical Summary

Problems solved by technology

[0003] The method of free forging and then mechanical processing has large machining allowance, low material utilization rate and long manufacturing time; the method of radial (rotary) forging molding has long processing time and high noise, and requires special equipment for forging, which is only suitable for large Mass production; products formed by casting molding have internal defects such as pores and looseness, resulting in unstable quality, so that the mechanical properties and microstructure cannot meet the conditions of use

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