Tools and Equipment for Moulding of Metals | Industries | Metallurgy
Small or medium-sized castings are made in flask— a box shaped container without top and bottom, which confines the sand moulds (Refer Fig. 3.28). It is made in two parts, held in alignment by dowel pins. The top part is called the cope and the lower part is called the drag. If the flask is made in three parts, the [...]