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Let's take a look at the production process of forged flanges:
The forging process generally consists of the following procedures, namely, selecting high-quality steel billets, 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.
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. Die forging has high productivity, simple operation, and easy mechanization and automation. Die forgings have high dimensional accuracy, small machining allowance, and more reasonable distribution of fiber structure, which can further improve the service life of parts.
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. The basic processes of free forging include upsetting, drawing, punching, bending and cutting.
1. Upsetting Upsetting is the process of forging the raw material in the axial direction to reduce its height and increase its cross-section. This process is commonly used for forging gear blanks and other disc-shaped forgings. Upsetting is divided into two types: full upsetting and partial forging.
2. Lengthening Lengthening is a forging process that increases the length of the blank and reduces the cross-section. It is usually used to produce blanks for shaft parts, such as lathe spindles and connecting rods.
3. Punching A forging process in which a punch is used to punch through holes or non-through holes in a billet.
4. Bending A forging process in which a billet is bent into an angle or shape.
5. Torsion A forging process in which one part of a billet is rotated at an angle relative to another.
6. Cutting A forging process in which the blank is divided or the head is removed.
