Liquid state extrusion forming apparatus and method

Abstract

The present invention provides a liquid state extrusion forming apparatus and a method. The liquid state extrusion forming apparatus comprises an upper movable cross beam, a lower movable cross beam, a punching head, a concave mold and an edge pressing gas discharge material discharge ring, wherein one end of the punching head is matched with the mold cavity of the concave mold, the other end of the punching head is connected with the upper movable cross beam, the edge pressing gas discharge material discharge ring is sleeved on the punching head and is matched with the punching head gap, and the edge pressing gas discharge material discharge ring and the concave mold are subjected to mold closing connection when the edge pressing gas discharge material discharge ring moves downward to the concave mold. According to the present invention, the high temperature metal liquid is subjected to extrusion forming through punching head pressing, pressure increasing and pressure maintaining; the work-piece falls down during the return travel of the punching head and the edge pressing gas discharge material discharge ring; and with the technical scheme of the present invention, the easy gas discharge structure is adopted, such that the problems of foaming, low metal liquid utilization rate and high production cost of the cold type die-casting forming are completely solved, the work-piece bottom repair technology can be completed in one time without addition of other bottom repair equipment, and advantages of high yield, high product strength, high production efficiency and the like are provided.

Description

technical field [0001] The invention belongs to the field of mechanical manufacturing, and relates to a forging device and method, in particular to a liquid extrusion molding device and method. Background technique [0002] Conventional aluminum alloy pots, hardware pump casings, some metal parts of automobiles or hardware structural parts and other products require dense metal crystallization, and the interior of the parts requires no bubbles, no pores, no pits, and no defects such as skinning and cold shuts. At present, the molding of these parts is conventionally formed by cold die casting machine or gravity casting. [0003] Taking the aluminum alloy pot body as an example, this type of product is characterized by a thick bottom and thin walls. Therefore, when making such products with a cold die-casting machine, because the aluminum alloy liquid enters the mold cavity, the flow path is long and the speed is fast, the gas in the mold cavity cannot be discharged cleanly,...

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Problems solved by technology

[0005] In view of this, the present invention thoroughly solves the problems of foaming and high production cost of cold die-casting through the structure that is conducive to exhaust, and has the advantages of high yield, high product strength and high production efficiency.

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