High-performance die cast forming method and product based on two-plate die casting machine

Abstract

The invention belongs to the technical field of manufacturing and processing of metal parts, and particularly discloses a high-performance die cast forming method and product based on a two-plate diecasting machine. The method comprises the following steps of: S1, closing a die of the two-plate die casting machine to form a die cavity, and locking the die; S2, firstly slowly injecting and then rapidly injecting molten alloy to be die-cast into the cavity; S3, after the die cavity is filled with the molten alloy, performing pressurizing and feeding, cooling and solidifying the molten alloy under the action of pressure, and then obtaining a die cast after demolding; S4, carrying out solution heat treatment on the die cast in a mode of firstly low-temperature-stage two-stage heat preservation and then ultra-short-time solution heat preservation, and then performing quenching; and S5, carrying out aging heat treatment on the quenched die cast to obtain the required high-performance die cast. The method can be used for preparing large high-performance metal structural parts, and has the advantages of simple and easy operation, low preparation cost and the like.

Description

technical field [0001] The invention belongs to the technical field of metal parts manufacturing and processing, and more particularly relates to a high-performance die casting forming method and product based on a two-plate die casting machine. Background technique [0002] In the casting and forming process of aluminum alloy parts, die casting is a casting method with the fastest production speed and high quality of formed parts. Aluminum alloy die-casting is a method of rapidly filling the cavity of a metal mold with liquid aluminum alloy under high pressure, and rapidly solidifying under high pressure to obtain castings, also known as high-pressure casting. The so-called large aluminum alloy structural parts usually refer to high-stress parts with a maximum size greater than 800 mm, or a part weight greater than 10 kg, such as automotive structural parts. [0003] Most of the traditional die-casting process methods can only produce non-stressed parts such as shell parts...

AI Technical Summary

Problems solved by technology

Since the two-plate die-casting machine is a new technology that has just appeared in recent years, there is currently a lack of research on the die-casting process based on the two-plate die-casting machine. The existing die-casting process is based on the three-plate die-casting machine, which is not suitable for the two-plate die-casting machine. Research is urgently needed in order to obtain a die-casting process that matches the two-plate die-casting machine, so as to give full play to the advantages of the two-plate die-casting machine to prepare large structural parts with high stress

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