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Production process of forging flange blank:

Production process of forging flange blank:

Select high-quality billet blanking, heating, forming, cooling after forging. The forging process includes free forging, die forging and tire die forging. During production, different forging methods are selected according to the forging quality and production batch.

One. Free forging

Basic process: during free forging, the shape of forgings is gradually forged into blanks through some basic deformation processes. The basic process of free forging includes upsetting, drawing, punching, bending and cutting.

1. Upsetting

Upsetting is the process of forging the original billet along the axial direction to reduce its height and increase its cross section. This process is often used to forge gear blanks and other disc forgings. Upsetting can be divided into full upsetting and partial upsetting.

2. Drawing length

Drawing length is a forging process that increases the length of the blank and reduces the cross-section. It is usually used to produce shaft blank, such as lathe spindle, connecting rod, etc.

3. Punching

The forging process of punching through or through holes in a blank with a punch.

4. Bending

A forging process in which the blank is bent to an angle or shape.

5. Twist

A forging process in which one part of a billet is rotated at an angle to the other.

6. Cutting

The forging process of cutting blank or cutting head.

Two. Die forging

Die forging is called model forging. The heated blank is placed in the forging die fixed on the die forging equipment for forging.

1. Basic process of die forging

Die forging process: blanking, heating, pre forging, final forging, punching, trimming, tempering, shot peening. Common processes include upsetting, drawing, bending, punching and forming.

2. Common die forging equipment

Common die forging equipment includes die forging hammer, hot die forging press, flat forging machine and friction press, etc.

Generally speaking, the quality of forged flange is better. Generally, it is produced by die forging, with fine crystal structure, high strength and high price.


Both cast flange and forged flange are common manufacturing methods of flange. According to the strength requirements of components to be used, if the requirements are not high, turning flange can also be selected.


Source: China Flange Manufacturer – Jinan Aowei Mechanical Equipment Co.,Ltd (www.awflange.com)


(Jinan Aowei  is a leading manufacturer and supplier of nickel alloy and stainless steel products, including Super Duplex Stainless Steel Flanges, Stainless Steel Flanges, Stainless Steel Pipe Fittings, Stainless Steel Pipe. Yaang products are widely used in Shipbuilding, Nuclear power, Marine engineering, Petroleum, Chemical, Mining, Sewage treatment, Natural gas and Pressure vessels and other industries.)


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