The invention relates to an aluminum
alloy casting furnace which comprises a
liquid transfer chute, a mechanical pump, a
ceramic filtering plate, a refining degassing device, an aluminum
alloy liquidlevel detection device, a furnace body, a top heating device or a bottom heating device, a feeding hole and a furnace door. When the furnace is used, an aluminum
alloy liquid or a
solid aluminum alloyis fed into the furnace body through the feeding hole after the furnace door is opened, and is heated to a certain process temperature through the top heating device or the bottom heating device;
hydrogen is removed through the refining degassing device, impurities are removed through the
ceramic filtering plate, the aluminum alloy liquid is lifted through the mechanical pump, and the lifted aluminum alloy liquid flows in the
liquid transfer chute and then flows into a
casting device; and quantification precision of the mechanical pump is dynamically compensated through a liquid level heightdetected by the aluminum alloy liquid level detection device. By adopting the aluminum alloy
casting furnace, a high-quality melt can be provided for aluminum alloy casting, the mechanical pump is high in quantification precision after compensation, and compared with an aluminum alloy
atmospheric pressure casting furnace, the aluminum alloy casting furnace does not need to be sealed and is small in furnace body manufacturing difficulty, low in cost and applicable to large-scale application.