The appearance characteristics of forged parts mainly include the following aspects:
Surface texture and details: The surface of forged parts is usually rough, with obvious textures and defects, such as forging marks and pores. This is caused by the flow of materials during the forging process. In contrast, the surface of castings is relatively smooth, without obvious pores, inclusions or cracks.
Gloss and color: The gloss and color of forged parts also have certain characteristics. Forged parts usually make a crisp sound when knocked, with obvious metal impact sound, while the sound of castings is duller. In addition, forged parts have higher gloss and surface flatness, showing excellent smoothness and brightness on both the front and back sides, while the metal gloss and surface of castings may be uneven, and even have obvious burrs and defects.
Draft angle and escape design: In specific applications such as wheels, the draft angle of forged wheels is usually smaller, generally between 0° and 3°, while the draft angle of cast wheels is between 7° and 10°. In addition, cast wheels often have a shavings on the back to reduce weight and facilitate logo engraving, while forged wheels may not have shavings, or even if they do, they will have a different style.
Weight and feel: Forged parts can withstand greater pressure and are lighter due to their tight molecular structure. When touched, forged rims are usually thinner and feel lighter.
