1) Large weight range. Forged parts can range from a few grams to several hundred tons in size.
2) Higher quality than castings. The mechanical properties of forgings are better than castings, and they can withstand large impact forces and other heavy loads. Therefore, forgings are used for important and heavily stressed parts.
For high carbide steel, forgings have better quality than rolled materials. High speed steel rolled (or forged) materials can only meet the usage requirements after being modified and forged. Especially high-speed steel milling cutters need to be forged.
3) Heavy and light. On the premise of ensuring design strength, forgings are lighter in weight than castings, which reduces the weight of the machine itself and is of great significance for transportation vehicles, airplanes, vehicles, and spacecraft.
4) Save raw materials. For example, for a crankshaft with a static weight of 17kg used in automobiles, when using rolling cutting and forging, the chips account for 189% of the crankshaft weight, while when using forging, the chips only account for 30%, which also shortens the machining time by 1/6.
5) High productivity. For example, using two hot forging presses to forge radial thrust bearings can replace 30 automatic cutting machines. When using a top forging automatic machine to produce M24 nuts, the productivity of a six axis automatic lathe is 17.5 times higher.
6) Free forging has great flexibility, therefore, forging methods are widely used in some manufacturing plants to produce various accessories.