Die casting mould special for ultrathin-wall non-leakage aviation aluminium alloy element

Abstract

The invention discloses a die casting mould special for an ultrathin-wall non-leakage aviation aluminium alloy element, comprising a right mould (1), a left mould (8) and a die casting inlet (4). The die casting mould is characterized in that the right mould (1) mainly comprises a fixed mould frame (10) and a fixed mould insert (11) embedded in the fixed mould frame (10); the die casting inlet (4) is arranged on the fixed mould frame (10); the fixed mould insert (11) is internally provided with a die cavity (112) in which a fixed mould insert body (12) is arranged; and the left mould (8) mainly comprises a movable mould frame (80) and a movable mould insert (81) embedded in the movable mould frame (80). The die casting mould special for the ultrathin-wall non-leakage aviation aluminium alloy element adopts a dual annular feeding structure and a T-shaped vent channel structure; the dual annular feeding structure ensures that aluminium liquid rapidly enters into the die cavity in the die casting process, thereby ensuring that the thin-wall part of the element is filled fully; and the T-shaped vent channel structure ensures the gas exhaust of the die cavity under the condition that the aluminium liquid is rapidly filled, thereby preventing the gasenclosure of a casting.

Description

technical field [0001] The invention relates to the field of die-casting, in particular to a special die-casting mold for ultra-thin wall and non-leakage aviation aluminum alloy parts used for processing aviation aluminum alloy die-casting parts. Background technique [0002] Aviation aluminum alloy die-casting parts have high dimensional accuracy, small machining allowance, and thin walls. Not only that, due to the particularity of use under aviation conditions, pressure leakage is not allowed, the structure of the parts is required to be dense, casting defects are not allowed, and the acceptance is extremely harsh. [0003] A typical product is the key part of the oxygen mask in the aviation lifesaving system - the oxygen regulating valve casting of the oxygen mask. The casting belongs to precision die-casting aluminum alloy, the total weight is only 55g, and the structure is complex, the minimum non-processing wall thickness is 0.5mm , In addition, it must be tested unde...

AI Technical Summary

Problems solved by technology

[0002] Aviation aluminum alloy die-casting parts have high dimensional accuracy, small machining allowance, and thin walls. Not only that, due to the particularity of use under aviation conditions, pressure leakage is not allowed, the structure of the parts is required to be dense, casting defects are not allowed, and the acceptance is extremely high. harsh

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