Shell moulding foundry
Shell moulding casting (Crowning process) plans to pour the molten metal, within a sand shell hot format, which can contain one or more cores, to get a casting with minimal dimensional tolerance and low surface roughness.
This method of production involves preparation, through forming machines, shells, sand treated with thermosetting resins, with variable thickness. Inside the shells are inserted some “cores” to get a rough cast with geometry and dimensions very similar to the finished piece.
With the molten metal fills the shell, through a casting system with a feed channel specially designed for each rough casting to be produced, all kinds of fusion.