Complete these sentences describing the pressure die-casting process using the present active or passive forms of the verbs in brackets, as appropriate.

1. First, metal (heat) until it melts.
2. Molten metal (pour) into the chamber.
3. The piston then (move) along the chamber and (push) the molten metal into the cavity. 
4. The metal (fill) the cavity between the two halves of the mould. 
5. The mould (cool) the metal, which (become) solid. 
6. The mould is opened and the metal component (eject) from it.