| 摘要 |
The present invention relates to a method and apparatus of casting a near-net shape article. In order to achieve an equiaxed grain microstructure for the shape article, the method comprises providing a melt comprising molten metallic material in a mold heated in a mold heating furnace to a temperature above a solidus temperature of the metallic material. The mold has an article-shaped mold cavity corresponding to that of the article to be cast, relatively moving the melt-containing mold and the furnace to withdraw the melt-containing mold from the furnace through an active cooling zone where cooling gas is directed against the exterior of the mold to actively extract heat in a manner to solidify the melt there. |
