Steering knuckle forging molding process of heavy truck

Abstract

The invention discloses a steering knuckle forging molding process of a heavy truck, which is suitable for the production of steering knuckles of Steyr heavy truck, the final molding shape and size are known and the material of the steering knuckles is 42CrMo; the process comprises the following steps: 1) pole pulling: pole pulling is carries out to round steel blank by a 750kg air hammer, so as to form a workpiece formed by a cylindrical column section and a round table section; b) preforging, heading and material division: the workpiece which carries out pole pulling is arranged on a pre-forging mold of a 16000N friction press for pre-forging, the heading and material division are carried out to the cylindrical column section, so as to lead the cylindrical column section to form a forking structure by one-time-molding; c) finish forging molding: the workpiece which is pre-forged is arranged on a molding die of a 25000kN friction press to carry out finish forging, the shape of all parts are molded one time; by adopting the process, the forging quality is effectively improved and the consumption of raw material is reduced while reducing the equipment investment cost; in addition, the production efficiency and the passing percent of products are high.

Description

technical field [0001] The invention relates to a forging process, in particular to a heavy truck steering knuckle forging forming process. Background technique [0002] The steering knuckle is one of the main parts on the steering axle of the car. The function of the steering knuckle is to bear the front load of the car, support and drive the front wheel to rotate around the kingpin to make the car turn. Impact load, therefore, requires it to have high strength, especially for heavy-duty vehicles such as Steyr trucks, which have very high requirements for steering knuckles. Considering factors such as equipment, the production cost of this type of steering knuckle is much higher than other types The production cost of steering knuckle is high. [0003] At present, there are two main production processes for Steyr heavy truck steering knuckles: ① Use 80,000KN hot die forging press, multi-station die forging for one-time forming, high production efficiency, good quality, low...

AI Technical Summary

Problems solved by technology

[0002] The steering knuckle is one of the main parts on the steering axle of the car. The function of the steering knuckle is to bear the front load of the car, support and drive the front wheel to rotate around the kingpin to make the car turn. Impact load, therefore, requires it to have high strength, especially for heavy-duty vehicles such as Steyr trucks, which have very high requirements for steering knuckles. Considering factors such as equipment, the production cost of this type of steering knuckle is much higher than other types The production cost of steering knuckle is high

[0003] At present, there are two main production processes for Steyr heavy truck steeri

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