Pre-forging die for forging aluminum alloy wheel

Abstract

The invention relates to the field of molds, in particular to a pre-forging die for forging an aluminum alloy wheel. The pre-forging die comprises a base, a main body, a closing mechanism, a limiting mechanism, a lifting mechanism, a discharging mechanism and a fixing mechanism, wherein a high-temperature aluminum alloy is in contact with the side wall of the main body; the bottom end of the aluminum alloy is in contact with the top surface of the discharging mechanism; the high-temperature aluminum alloy is in contact with the inner side wall of the main body; the aluminum alloy is alternately heated and cooled, so that the contact between the aluminum alloy and the main body causes an oxide film to be separated; the lifting mechanism is rotated and drives the lifting mechanism to move up and down; the discharging mechanism drives the high-temperature aluminum alloy to move up and down, so that the oxide layer on the surface of the aluminum alloy falls off downwards, and meanwhile the aluminum alloy enables the internal temperature of the main body to rise and preheats the main body; the lifting mechanism is rotatably connected to the closing mechanism, so that the oxide layer slides out of the side wall of the closing mechanism, and is prevented from accumulating inside the main body; the molding of the aluminum alloy inside the main body is facilitated; and the quality of the wheel is improved.

Description

technical field [0001] The invention relates to the field of dies, in particular to the pre-forging die for forging aluminum alloy wheels. Background technique [0002] Hot die forging is a kind of forging technology, which generally refers to the precision forging method of heating the metal blank to a temperature higher than the recrystallization temperature of the material, and using a mold to plastically form the metal blank into the shape and size of the forging. [0003] Then put the high-temperature aluminum alloy into the inside of the mold for hot die forging, the surface temperature of the aluminum alloy is high, the temperature inside the mold is low, the aluminum alloy is in contact with the mold, and the temperature difference between the aluminum alloy surface is large, which causes the oxide layer on the aluminum alloy surface to fall off Entering the interior of the mold, during the process of pressing the aluminum alloy wheel, the peeled oxide layer is in co...

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Problems solved by technology

[0003] Then put the high-temperature aluminum alloy into the inside of the mold for hot die forging, the surface temperature of the aluminum alloy is high, the temperature inside the mold is low, the aluminum alloy is in contact with the mold, and the temperature difference between the aluminum alloy surface is large, which causes the oxide layer on the aluminum alloy surface to fall off Entering the interior of the mold, during the process of pressing the aluminum alloy wheel, the peeled oxide layer is in contact with the high-temperature aluminum alloy, the contact between the mold and the high-temperature aluminum alloy is not sufficient, and the oxide layer is pressed into the high-temperature aluminum alloy internal value, which reduces the the quality of the finished product

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