Two, forging valve

1, forging: is the use of forging machinery to apply pressure on the metal billet, so that it produces plastic deformation to obtain a certain mechanical properties, a certain shape and size of forging processing method.

2. One of the two major components of forging. Through forging can eliminate the loose state of the metal, welding holes, the mechanical properties of the forgings are generally better than the same material castings. Forgings are mostly used for the important parts with high load and severe working conditions, except for the simple plate, profile or welding parts that can be rolled.

3, forging according to the forming method can be divided into: ① open forging (free forging). The use of impact force or pressure to make the metal in the upper and lower two iron (anvil block) deformation to obtain the required forgings, mainly manual forging and mechanical forging two. (2) Closed forging. The forging can be divided into die forging, cold heading, rotary forging, extrusion and so on. 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 (room temperature).

4, forging materials are mainly carbon steel and alloy steel of various components, followed by aluminum, magnesium, titanium, copper and their alloys. The original state of the material is bar, ingot, metal powder and liquid metal. The ratio of the cross section area of metal before deformation to the die section area after deformation is called forging ratio. Correct selection of forging ratio has a great bearing on improving product quality and reducing cost.

Nortech is one of the leading industrial valve manufacturers in China with quality certification ISO9001.

Major products: Butterfly Valve, Ball Valve,Gate Valve, Check Valve, Globe Vavlve,Y-Strainers, Electric Acurator , Pneumatic Acurators .