The shell moulding process consists in casting liquid metal inside shells with possible internal cores, both formed with sands treated and coated with thermosetting resins.

features

lack of reactions between metal and sand during the pouring
the shell permeability removes the risk of internal blowholes
the metal structure is very fine thanks to the fast cooling
precision castings with strict dimensional tolerance: CT6- CT7 (ISO 8062)
uniform surfaces with roughness Ra 6,3
controlled minimum thickness
complex internal shapes
draft angle from 0,5° to 1°


For castings in cast iron and steel, click on “materials”