Alloy melt vacuum quantitative casting equipment and method adopting four-station mechanism control

Abstract

The invention discloses equipment capable of achieving vacuum quantitative casting of molten metal. The equipment comprises a T-shaped cross beam, a vacuum quantitative casting device, a drive and transmission device, a feedback signal receiving device and a control system; the drive and transmission device comprises a four-station drive mechanism which drives an exhaust opening closing plug and a liquid draining opening closing plug to perform reciprocating motion at the same time through a connecting part, and therefore the exhaust opening closing plug and the liquid draining opening closing plug can stay at the different positions, independent opening or closing of an exhaust opening and a liquid draining opening can be achieved, it is ensured that during casing of the molten metal, the oxidation and hydrogen absorption of the molten metal can be reduced, gas holes and oxide inclusion of a casting are reduced, and the casting quality is improved.

Description

technical field [0001] The invention relates to a vacuum quantitative pouring equipment and method for an alloy melt controlled by a four-station mechanism, which is mainly used in die casting, squeeze casting and gravity casting of aluminum alloys and magnesium alloys, and belongs to the field of casting equipment. Background technique [0002] Aluminum alloys and magnesium alloys are widely used in aerospace, automobile, construction and other fields due to their high specific strength, light weight and good casting performance, and they are playing an increasingly important role in these fields. With the continuous development and progress of science and technology, higher requirements are constantly put forward for the performance of aluminum alloys and magnesium alloys. [0003] Since the aluminum and magnesium elements in aluminum alloys and magnesium alloys are extremely active elements in chemical properties, they are easily oxidized by reacting with oxygen in the ai...

AI Technical Summary

Problems solved by technology

There are certain shortcomings in this technology: 1. Although inert gas and airtight container are used in the process of ingesting and transferring the alloy melt to ensure the isolation of the melt from the air, the melt discharged from the airtight container during pouring will be Unavoidable exposure to air, resulting in oxidation of the melt

2. During pouring, if the distance between the sealed container and the pressure chamber or barrel is too far, it will cause the melt to flow out in a turbulent state, which is prone to entrainment; if the distance between the sealed container and the pressure chamber or barrel is too close, the outflow The melt may adhere to the outer wall of the sealed container, causing contamination and loss of the melt

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