Degassing and deslagging device for aluminum liquid

Abstract

The invention provides a degassing and deslagging device for aluminum liquid. The degassing and deslagging device comprises a gas storage bottle and a storage tank, wherein gas for the degassing and deslagging of the aluminum liquid is stored in the gas storage bottle. The degassing and deslagging device is characterized in that: a deslagging agent is sealed in the storage tank; a gas pipeline is arranged between the gas storage bottle and the storage tank, the gas in the gas storage bottle is introduced into the storage tank by the gas pipeline in the controlled state; a discharging pipe is arranged at the lower end of the storage tank; a heat-resisting pipe is connected to the back of the discharging pipe; a branch pipeline is arranged on the gas pipeline; and the other end of the branch pipeline is connected to the discharging pipe or is connected to the heat-resisting pipe. According to the degassing and deslagging device, the deslagging agent is blown into the bottom of the aluminum liquid by nitrogen, inertia nitrogen and the deslagging agent of which the specific gravity is smaller than that of the aluminum liquid are floated upwards automatically to carry away hydrogen and impurities in the aluminum liquid, so that gas content in the aluminum liquid is reduced effectively and the impurities in the aluminum liquid are removed effectively, and the quality conformance of the aluminum liquid is ensured; and the deslagging agent is driven by the gas to be diffused in the aluminum liquid, so that the deslagging agent can be distributed at the bottom of the aluminum liquid uniformly, and the integral degassing and deslagging effect is good.

Description

technical field [0001] The invention relates to a device for removing impurities in molten metal in the foundry industry, in particular to a device for removing gas and impurities (slag inclusion) in molten aluminum. [0002] Background technique [0003] Die-casting machine is a common equipment in the field of forming technology in the machinery industry. It is an industrial machine that hydraulically injects molten metal into a die-casting mold for cooling and forming under pressure, and obtains solid metal castings after the mold is opened. [0004] In die-casting production, the quality of molten aluminum is the key, which directly affects the molding quality and internal microstructure of die-casting parts, and determines its mechanical properties to a large extent. The production method commonly used in existing factories is to first heat the aluminum ingots in the furnace to about 700? , Moisture decomposes when it comes into contact with molten aluminum, and d...

AI Technical Summary

Problems solved by technology

In order to make the quality of the aluminum liquid meet the requirements and form a high-quality liquid, it is necessary to remove the gas and impurities in the aluminum liquid; in the prior art, such as figure 1 The slag removal device shown is to put the slag remover 4a on the aluminum liquid when removing the gas and impurities contained in the aluminum liquid 2a in the crucible 1a. Because the slag remover is lighter than the aluminum liquid, the slag remover will Floating on the surface of the aluminum liquid, the operator uses the special tool bell 3a to press the slag remover 4a into the bottom of the aluminum liquid 2a, release the slag remover 4a at the bottom and let the slag remover 4a float up to bring out the impurities in the aluminum liquid 2a to achieve the purpose of removing the slag remover 4a. Slag effect: Due to the difficulty of operation, the distribution of slag removal agent in molten aluminum is uneven, the quality of degassing cannot be guaranteed, the effect of slag removal is unstable, and the quality and internal microstructure of the formed castings are not ideal, which cannot meet the actual needs

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