BL Flange Company found that the forging process is generally composed of the following steps, that is, selecting billet blanking, heating, forming, and cooling after forging. Forging process methods include free forging, die forging and fetal membrane forging. During production, different forging methods are selected according to the quality of the forgings and the number of production batches.

　　BL Flange Company believes that forged flange free forging has low productivity and large machining allowance, but it has simple tools and great versatility, so it is widely used for forging single-piece and small-batch forgings with simple shapes. Free forging equipment includes air hammer, steam-air hammer and hydraulic press, etc., which are respectively suitable for the production of small, medium and large forgings.

　　BL Flange shares the basic process of free forging: During free forging, the shape of the forging is gradually forged from the blank through some basic deformation processes. BL Flange Company found that the basic processes of free forging include upsetting, drawing, punching, bending and cutting.

　　1. Upsetting Upsetting is an operation process in which the raw material is forged in the axial direction to reduce its height and increase its cross-section. 2. Elongation Elongation is a forging process that increases the length of the blank and reduces the cross-section. It is usually used to produce shaft blanks, such as lathe spindles, connecting rods, and the like. 3. Punching is a forging process in which a punch is used to punch through holes or non-through holes in the blank. 4. Bending A forging process in which the billet is bent into a certain angle or shape. 5. Twisting is a forging process in which one part of the blank is rotated by a certain angle relative to another part. 6. The forging process of cutting and dividing the blank or cutting off the head.