| 摘要 |
This invention relates to a method for uphill casting in sand molds with hig h- resin casting cores or especially casting cores containing binders, and with directed solidification of metallic castings that have at least one cavity. In particular, these are prototypes of engine blocks or cylinder heads, for example for internal combustion engines that are provide d with a cavity through which coolant water flows. To provide for low-turbulence flow of the liquid molten metal during the deaeration of the casting mold, the casting mold (1) with at least one feeder head (24) is connected through a casting system (22) to an infeed funnel (23), and the molten metal it contai ns is displaced by gravity through the casting system (22) into the casting mold (1), with the cavity (11') in the molten metal being subjected after the filling to reduced pressure that is greater than the pressure of the core gases formed in the core. This eliminates the hindrance to filling the mold from air pockets in the mold. At the same time, dense and pore-free, mechanically strong cast parts are produced by the method.
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