Seven major auto parts processing technology (2)

2. About forging

In the automobile manufacturing process, forging is widely used. Forging is divided into free forging and model forging. Free forging is a processing method in which a metal blank is placed on an anvil and subjected to impact or pressure (known as "ironing"). The blanks of automobile gears and shafts are processed by free forging.

Model forging is a processing method in which metal blanks are placed in the cavity of a forging die and subjected to impact or pressure. Model forging is a bit like the process of pressing dough into a biscuit shape in a mold. Compared with free forging, the shape of the workpiece produced by die forging is more complicated and the size is more accurate. Typical examples of automobile die forgings are: engine connecting rods and crankshafts, automobile front axles, steering knuckles, etc.

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