| 摘要 |
<p>The method comprises casting a molten metal in a mold (2), where the metal sublimates or liquefies the lost-wax pattern so that the volume occupied by the pattern is gradually replaced by molten metal, and adjusting the thermal properties of an eutectic plate depending on the stage reached in the molding process for changing the cooling speed of the cast metal. The mold comprises eutectic plate, which is in heat contact with the lost pattern. A change in the intensity of heat flow traverses a face of the eutectic plate, which turns towards the lost-wax pattern. The method comprises casting a molten metal in a mold (2), where the metal sublimates or liquefies the lost-wax pattern so that the volume occupied by the pattern is gradually replaced by molten metal, and adjusting the thermal properties of an eutectic plate depending on the stage reached in the molding process for changing the cooling speed of the cast metal. The mold comprises eutectic plate, which is in heat contact with the lost pattern. A change in the intensity of heat flow traverses a face of the eutectic plate, which turns towards the lost-wax pattern and is thermally coupled with the lost-wax pattern. The adjustment of thermal properties of the eutectic plate is obtained by changing the thermal conductivity, thermal mass capacity, temperature, pressure or velocity of a coolant fluid present in a cavity of the eutectic plate. The adjusting of thermal properties of the eutectic plate is elapsed time function from the beginning of the molten metal casting in the mold, and is function of measured physical quantity representing the temperature of cast metal. The thermal properties of the eutectic plate is modified: to reduce the intensity of heat flow through one side of the plate when the molten metal is introduced in the lost pattern; and to increase the intensity of the heat flow through one side of the plate during the solidification of the metal. An independent claim is included for a mold for a lost-wax pattern molding.</p> |
