In a process for die casting moulded bodies having pores filled with gas (6) from a die-cast alloy (3), in which the liquid die-cast alloy (3) is pressed together with the gas (6) into a mould cavity having a negative mould of the moulded body, the gas (6) and the die-cast alloy (3) are together enclosed in a casting cylinder (1) without prior mixing, and a casting piston (5) is advanced in the casting cylinder (1) at such a high speed that the gas (6) and the liquid die-cast alloy (3) mix by no later than upon entry into the mould cavity.