Manhole cover casting line making / automatic molding line

The manhole cover casting process consists of five steps: pattern making, mold preparation, melting/pouring, and cooling and finishing.
Manhole cover production line consists of machines:
Foundry Molding Machine
Core Shooter Making Machine
Furnace
Shakeouot Machine
Vibrating Conveyor
Magnetic Belt Conveyor
Suspension Separator
Hoist
Hexagonal Sieve
Boiling and Cooling bed

Manhole covers are made out of cast iron. Cast iron means that the iron is melted and then poured, or cast, into a mold. Typical manhole covers are cast using gray cast iron, ductile cast iron.

Besides iron, the other raw material required to make manhole covers is green sand, which is sand bound together with clay. The green sand is used to produce the molds into which the molten iron is poured. The sand mixture consists of about 90% silica sand, 4-10% clay, 2-10% organics (e.g., coal), and 2-5% water. The sand is not colored green. Green refers to the fact that it is allowed to remain wet during the casting process.