| 摘要 |
<p>A method for casting an article composed of a foamed metal includes positioning a die (36) with a die cavity (38) above a bath (32) of a molten metal (34) and pressurizing the bath to cause the molten metal to fill the die cavity. A gas is then bubbled through the molten metal to form a foam. The foam is formed in the die cavity. Once the foam in the die cavity is solidified, the pressure in the bath is released and the formed article is removed. An apparatus for the method includes a die positioned above the bath, the die having a die cavity in fluid communication with the bath. The bath is provided with a pressurizing means (40) and a venting means (40) as well as a gas supply port (42) for forming the foam.</p> |
