The sponsors are also ready to go for joint venture on the basis of buy back arrangements for exporting the products abroad. The balance is expected from the foreign partner in the form of equity participation. There are round 27 cement plants in Pakistan and they have huge requirements of above noted castings. Similarly there is lot more potential in the replacement market for various kind of parts. Currently In Use Moulds of silica sand are prepared by mixing it with sodium silicate and passing CO2 gas to infuse the sand and to achieve desired hardness of the mould to withstand the pressure of molten metal when poured in it.
Moulds are prepared with the help of patterns mounted on plates.
Metal is melted in high frequency electric induction furnace and desired specifications and composition is achieved by adding various alloys in right proportion and at right temperature. The molten metal is treated to convert it in ductile iron of desired grade. At particular temperature molten metal is melted in the silica sand moulds already prepared. Temperature is measured with the help of Pyrometer at various stages of melting and before pouring the metal in moulds. Metal is also tested for chemical composition before pouring.