Forging is under intense pressure after flattening, metal extrusion blow or to get have a kind of high strength metal parts processing.Gardner aluminum alloy forging said in general, (except for special cases), preheating before forging metal needed to achieve the desired temperature.Need special attention is, forging and casting is completely different, melts the metal forgings don't like the casting after casting.

Gardner aluminum alloy forging to teach you how to compare forgings and castings, need from the following points:

Forging higher intensity.Casting can't through the hot/cold process reinforcement.Forgings have higher strength than the casting performance -- can ensure better intensity.

Forging can improve the casting ingot or bar defects.Casting no crystal flow no directional strength.Also, can't stop metallurgy forming defects caused by casting process.Forging process can make the grain size along the direction of the maximum intensity of requested to produce flow.Forging can improve dendritic structure parts, alloy segregation and similar defects.

Forging more reliability and low cost.The defects of the casting performance varied.Due to the hot working to improve the grain pattern, has high strength, ductility and resistance characteristics, the reliability of the forging is better.Casting process will generate additional cost of production control and inspection.

Forging heat treatment effect is better.Metal casting need good control of the melting and cooling process, avoid the happening of alloy segregation phenomenon.This will produce non-uniform heat treatment effect, affecting the straightness of the product.And of forging heat treatment is varied, the stability of the product size is better.The flexibility of forgings and benefit costs Some castings, such as casting with special performance, require expensive materials and production control, long production cycle.Forging machine can produce different length products, at the same time, shorten the production cycle.Open die forging and kun forging is a good example.