Shell moulds are made from precoated sand on shell moulds making machines. The cores are baked in an electric furnace.
We can produce casting with range 0,03 - 25 kgs with this kind of technology. Producing the melted metal we use gas heating furnaces.
Used materials for shell moulds:
- gunmetals (CuSnZnPb)
- brass (CuZn)
- aluminium bronze (CuAlNi, CuAlFe)
The castings are cleaned in the fettling where the sprues, runners and the feeder are cut off from the castings with plastic discs machines and metal saws.
We use grinding machines being operated by compressed air and shot blasting machines for delicate cleaning.