Ductile iron drainage fittings are a common drainage system material, also known as ductile iron fittings or ductile iron pipe fittings. They are made of ductile iron material, a special type of cast iron that has high strength and corrosion resistance. It is widely used in the fields of construction, municipal engineering, industrial equipment and agricultural drainage for the construction of drainage, sewage treatment, rainwater collection and other drainage systems.

Features:

  ● It has high strength, can withstand large pressure and load, and is suitable for various drainage systems and projects.

  ● Good corrosion resistance, able to resist erosion by water, soil and chemical substances, extending service life.

  ● Good sealing performance can effectively prevent leakage and leakage and ensure the normal operation of the drainage system.

  ● Good seismic resistance, able to maintain stability and safety in natural disasters such as earthquakes.

  ● With standardized dimensions and connection methods, installation is easy, saving time and labor costs.

  ● The manufacturing cost is relatively low and compared with other materials, it has a high cost performance.

The casting process of ductile iron drainage pipe fittings generally adopts sand casting or metal mold casting.

Sand casting is the most commonly used casting process for ductile iron drainage pipe fittings. Specific steps are as follows:

  ● Mold preparation: Make a sand mold according to the shape and size of the drainage pipe fittings. Molds usually consist of two or more mold boxes, with paint applied on the inside to improve the surface finish.

  ● Sand filling: Filling the mold with a specific proportion of sand and making it tightly bonded through vibration and compaction.

  ● Mold assembly: Put the mold boxes together and make sure they are tightly connected to form a complete mold cavity.

  ● Molten iron injection: Pour the ductile iron molten into the mold and fill the entire mold cavity.

  ● Cooling and solidification: After the molten iron is cooled and solidified, the mold is removed to obtain the ductile iron drainage pipe fittings.

Metal mold casting is a high-precision casting process suitable for large and complex components of ductile iron drainage fittings. Specific steps are as follows:

  ● Mold preparation: Make a metal mold, usually made of aluminum or copper alloy, which has high heat resistance and thermal conductivity.

  ● Mold preheating: Heating the metal mold to the appropriate temperature to improve the fluidity and solidification performance of the casting.

  ● Molten iron injection: Pour the ductile iron molten into the preheated metal mold and fill the entire mold cavity.

  ● Cooling and solidification: After the molten iron is cooled and solidified, the mold is removed to obtain the ductile iron drainage pipe fittings.