Introduction to forging production process


发布时间:

2024-02-20

Forging is a processing method that uses forging machinery to exert pressure on metal blanks to cause plastic deformation to obtain forgings with certain mechanical properties, shapes and sizes. Forging and stamping are both plastic processing properties and are collectively referred to as forging.

Forging is a processing method that uses forging machinery to exert pressure on metal blanks to cause plastic deformation to obtain forgings with certain mechanical properties, shapes and sizes. Forging and stamping are both plastic processing properties and are collectively referred to as forging.

 

Forging industry(19)

 

Forging is a commonly used forming method in mechanical manufacturing.

Through forging, the as-cast looseness and welding voids of the metal can be eliminated, and the mechanical properties of forgings are generally better than castings of the same material. For important parts in machinery with high loads and severe working conditions, forgings are mostly used, except for simple shapes that can be rolled plates, profiles or welded parts.

Forging can be divided into cold forging and hot forging according to the temperature of the blank during processing. Cold forging is generally processed at room temperature, while hot forging is processed at a temperature higher than the recrystallization temperature of the blank metal. The advantage will also be that forging when it is in a heated state but does not exceed the recrystallization temperature is called warm forging. However, this division is not completely uniform in production.

The recrystallization temperature of steel is about 460°C, but 800°C is generally used as the dividing line. Hot forging above 800°C is called warm forging or semi-hot forging between 300 and 800°C.

Die forging, cold heading, radial forging, extrusion, form rolling, roll forging, and forging can be divided into free forging, rolling, etc. according to the forming method. The deformation of the billet under pressure is basically not restricted by the outside, which is called free forging, also called open forging; the deformation of the billet in other forging methods is limited by the mold, which is called closed mode forging. There is relative rotational motion between the forming tool and the blank in forming rolling, forging, rolling, etc., and the blank is pressed and formed point by point, so it is also called rotational forging.

 

Forging industry(21)

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