| 摘要 |
A method for coating a die surface (10) with a foamed release agent (11) is disclosed. The release agent (11) is foamed outside a die and then is supplied to a die cavity (9). Alternatively, liquid release agent (11) is supplied to the die cavity (9) and then is foamed inside the die. Excess foamed release agent (11) is removed from the die before molten metal (12) is supplied to the cavity. Alternatively, the foamed release agent (11) is left in the cavity (9), and molten metal (12) is supplied to the cavity (9). The release agent (11) is foamed through mechanical agitation, bubbling, or by gas released from the release agent (11) when heated. <MATH> |
