DIE-CASTING DIE HAVING AIR RECEIVING PORTIONS FOR REDUCING MOLTEN METAL ADHESION

摘要

According to a die-casting die in accordance with the present invention, a cavity includes a first area and a second area, and a gap between a first formed plane of a stationary die and a second formed plane of a moving die greater in the first area than in the second area. The die-casting die comprises a number of first air storage parts dented concavely on at least one of the first formed plane in the first area and the second formed plane in the first area, and comprises a number of second air storage parts dented concavely on at least one of the first formed plane of the second area and the second formed plane of the second area. Each of the first air storage part and each of the second air storage part are shielded by being covered by the molten metal under a state of accommodating air when the molten metal is injected into the cavity through a gate. As the first air storage parts located on an upper side of a flow direction of the molten metal injected into the cavity through the gate among the air storage parts are more densely arranged than the first air storage part located on a lower side; adhesion and friction with the molten metal becomes small and, more specifically, the adhesion and friction in the first area can more effectively be reduced.