Casting flange, blank shape and size is accurate, processing amount is small, low cost, but there are casting defects (pores. Crack. Inclusion); The internal structure of the casting is less streamlined (if it is a cutting part, the streamline is worse); The forged flange is generally less carbon than the casting flange is not easy to rust, the forging is streamlined, the organization is dense, the mechanical properties are better than the casting flange; Improper forging process will also appear large or uneven grain, hardening crack phenomenon, forging cost is higher than casting flange.
Forgings can withstand higher shear and tensile forces than castings. The advantage of casting is that it can produce a more complex shape and the cost is relatively low; And the internal organization is uniform, there is no casting porosity, inclusion and other harmful defects; The difference between casting flange and forging flange from the production process, such as centrifugal flange is a kind of casting flange.
Centrifugal flange belongs to the precision casting method. The structure of this casting is much finer than that of ordinary sand casting, and the quality is improved a lot. It is not easy to have the problems of loose organization, porosity, trachoma and so on.
