Die-casting method and die-casting machine adopting same

Abstract

The invention discloses a die-casting method and a die-casting machine adopting the same. The die-casting machine comprises a die-casting die, a pressing mechanism, a support seat and a lifting mechanism, wherein a die cavity is formed in the die-casting die; a feed inlet of the die cavity is positioned at one end of the die cavity; the pressing mechanism is used for pressing metal liquid into the die cavity; the die-casting die is rotatably pivoted on the support seat; the lifting mechanism is used for lifting the die-casting die, enabling the die cavity to be inclined and enabling the other end of the die cavity to be higher than one end of the die cavity; and in the die casting process, the lifting mechanism firstly lifts up the die-casting die to enable the die cavity to be inclined and enable the other end of the die cavity to be higher than one end of the die cavity, then the pressing mechanism presses the metal liquid into the die cavity along the feed inlet, the metal liquid flows to the other end of the die cavity from one end of the die cavity and is finally full filled in the die cavity, and the air in the die cavity is squeezed to the other end of the die cavity by the metal liquid and is discharged from a gap between die plates of the die-casting die so as to ensure that no air bubbles exist inside a casting.

Description

technical field [0001] The invention relates to a die-casting method and a die-casting machine using the method. Background technique [0002] For large copper and aluminum parts, such as door panels, window frames, wheel bones, etc., the traditional manufacturing method is to cast them through sand molds. Due to the good air permeability of the sand mold, when the molten metal liquid enters the sand mold, the air in the sand mold cavity can be discharged relatively smoothly, thereby ensuring the quality of the product. Because the manufacture of sand molds is quite difficult, the service life is short, and the manufacturing process is quite long, which affects the production schedule and increases the manufacturing cost. [0003] For this reason, it is hoped that the die-casting mold can be used to realize the production and manufacture of large-scale die-casting parts. However, due to the extremely fast cooling speed of the molten metal liquid, it is necessary to let the...

AI Technical Summary

Problems solved by technology

However, due to the extremely fast cooling speed of the molten metal liquid, it is necessary to let the molten metal liquid quickly fill the mold cavity during production, which makes it difficult to discharge the air in the mold cavity, and eventually leads to defects such as bubbles and shrinkage in the product

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