Relative to castings and mechanical workpieces, forgings have the following advantages: high strength: Through the forging process, the internal structure of the forgings becomes dense, and the grains are small and evenly distributed, which makes the forgings have higher strength and wear resistance. In contrast, the internal structure of castings and mechanical workpieces is looser and the grain is larger, so the strength and toughness are relatively low. Good reliability: Because the forging has a uniform internal structure and high strength, its service life is relatively long, and can withstand greater load and impact. High dimensional accuracy: High dimensional accuracy can be achieved by controlling temperature, stress and forming process during forging, so more stringent assembly requirements can be met. In contrast, the dimensional accuracy of castings and machined workpieces is relatively low and additional machining may be required to meet the requirements. Small processing allowance: Due to the good flow of materials in the forging process, the processing allowance of forgings is usually small, which can reduce the subsequent mechanical processing amount and cost. While castings usually require more mechanical processing to trim the surface and adjust the size, mechanical workpieces need to be refined from the raw materials of the parts. High material utilization rate: The material will not suffer too much loss during the forging process, so the material utilization rate of the forging is relatively high. However, due to the possible problems of mortar loss and cooling shrinkage during the casting process, the material utilization rate is low. In short, forgings have obvious advantages over castings and machined workpieces in terms of strength, reliability, dimensional accuracy, processing allowance and material utilization. However, according to the specific application and requirements, the selection of the most appropriate processing method still needs to consider various factors.
