Low-pressure die casting machine for magnesium alloy automobile wheels

Abstract

The invention discloses a low-pressure die casting machine for magnesium alloy automobile wheels. The low-pressure die casting machine comprises a main casting machine, a holding furnace, a die, a real-time casting monitoring console and a liquid lifting tube, wherein, the die and the holding furnace which are arranged above the main casting machine are communicated with each other through the liquid lifting tube; the holding furnace comprises a furnace lining, an electrical heating wire, a furnace shell, a crucible, a furnace cover, a fully enclosed liquid filler and a protective gas access device; the furnace shell is internally equipped with the crucible; the furnace lining is arranged between the furnace shell and the crucible, and the inner side of the furnace lining is equipped with the annular electrical heating wire for heating the crucible; and the furnace cover is arranged above the furnace shell, the furnace cover and the furnace shell are sealed by a high-temperature resistant seal ring, and the furnace cover is equipped with the fully enclosed liquid filler, the protective gas access device and the liquid lifting tube. In the invention, a die temperature gradient field conforming to the requirement is established, the furnace temperature can be monitored in real time and the casting quality of the magnesium alloy product is improved.

Description

technical field [0001] The invention relates to a low-pressure casting machine for automobile wheels, in particular to a low-pressure casting machine for magnesium alloy automobile wheels. Background technique [0002] Existing holding furnaces of magnesium alloy low-pressure casting machines all work under normal pressure. Pressure holding and pressure relief. After the pressure is relieved, the unsolidified magnesium alloy liquid in the riser will all fall back into the crucible of the holding furnace by its own gravity, which will cause sediment to appear, especially when the magnesium alloy liquid in the crucible is less than 20kg, this phenomenon is more serious . During the next cycle, the oxide slag and other slag in the magnesium alloy liquid are easily pressed into the mold from the riser, causing casting defects or even scrapping of the product. The structure of the holding furnace is made of high temperature resistant refractory materials. The furnace lining is...

AI Technical Summary

Problems solved by technology

[0003] The existing magnesium alloy low-pressure casting machine is still in a state of fuzzy control of the mold temperature. It cannot monitor the mold temperature in real time, and cannot well establish a mold temperature gradient field that meets the requirements.

The above-mentioned defects will cause the casting quality of magnesium alloy products to be low and the scrap rate to be high, thus directly affecting the economic benefits of the enterprise

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