Cast and Forged Flanges

Cast and Forged Flanges

For casting flanges, the shape and size of the blank are accurate, the processing volume is small, and the cost is low, but there are casting defects (porosity, cracks, inclusions); the internal organization of the casting is less streamlined (if it is a cutting part, the streamlined shape is even worse);

Forged flanges generally have lower carbon content than cast flanges, are not easy to rust, the forgings are streamlined, the structure is relatively dense, and the mechanical properties are better than those of cast flanges;

The improper forging process can also cause large or uneven grains, and hardening cracks, and forging costs are higher than casting flanges.

Forgings can withstand higher shear and tensile forces than castings.

The advantage of castings is that complex shapes can be produced and the cost is relatively low;

The advantage of forgings is that the internal structure is uniform, and there are no harmful defects such as pores and inclusions in the castings;

The difference between cast flanges and forged flanges is based on the production process. For example, a centrifugal flange is a cast flange.

Centrifugal flanges are produced by precision casting. Compared with ordinary sand castings, this type of casting has a finer structure and higher quality and is less prone to problems such as loose organization, pores, and trachoma.

First of all, we need to understand how centrifugal flanges are produced, the process methods and products of centrifugal casting to make flat welding flanges, which are characterized by the following process steps:

①Put the selected raw steel into the intermediate frequency electric furnace for smelting, so that the molten steel temperature reaches 1600-1700℃;

②Preheat the metal mold to 800-900℃ and keep it at a constant temperature;

③ Start the centrifuge and inject the molten steel in step ① into the metal mold preheated in step ②;

④The castings are naturally cooled to 800-900℃ and kept for 1-10 minutes;

⑤Cool the water to near normal temperature, demould and take out the casting.

If you need flanges of various sizes, you can contact us [email protected]