Patent ID: 6283196
Filing Date: 2001-09-04
Classification: B22D

Abstract:
A method of active after-feeding castings in casting moulds with at least one after-feeding reservoir, each after-feeding reservoir communicating with at least one mould cavity, a gas pressure being applied and maintained on a molten metal in at least one after-feeding reservoir, until the metal in the at least one mould cavity has solidified, said method comprising the steps of:a) initially inserting at least one gas pressure-supply lance member into the mould such that a distal end of the lance member is located in the mould, andb) supplying a gas pressure to the distal end of the at least one pressure-supply lance member and further inserting the distal end of the at least one gas pressure-supply lance member into the after-feeding reservoir such that the gas pressure is supplied into the at least one after-feeding reservoir.