What is forging?

A processing method that uses forging machinery to apply pressure to metal billets to cause them to undergo plastic deformation in order to obtain forgings with certain mechanical properties, shapes, and sizes.

The role of forging

Forging can eliminate casting pores and welding holes in metals. The mechanical properties of forgings are generally better than those of castings of the same material. Forgings are often used for important parts in machinery with large loads and harsh working conditions, except for simple-shaped plates, profiles, or welded parts that can be processed by rolling methods.

Forging can be divided into

1. Open forging (free forging)

Including wet sand mold, dry sand mold, chemical hardening sand mold;

2. Closed die forging

Special casting using natural mineral sand and gravel as the main molding materials (such as investment casting, mud mold casting, foundry shell casting, negative pressure casting, full mold casting, ceramic casting, etc.);

3. Other casting classification methods

According to the deformation temperature, forging can be divided into hot forging (processing temperature is higher than the recrystallization temperature of the billet metal), warm forging (lower than the recrystallization temperature), and cold forging (at room temperature).

Forging materials

Forging materials are mainly carbon steel and alloy steel of various compositions, followed by aluminum, magnesium, titanium, copper and their alloys. The original state of the material includes bars, ingots, metal powder, liquid metal, etc.

What is the forging ratio?

The ratio of the cross-sectional area of the metal before deformation to the cross-sectional area of the die after deformation is called the forging ratio. The correct selection of the forging ratio is closely related to improving product quality and reducing costs.