Aluminum alloy fusion-casting equipment

Abstract

The invention discloses aluminum alloy fusion-casting equipment which comprises a crystallizer, a flow plate and a liquid level control device, wherein the liquid level control device comprises a rack, a lever, a stopper and a buoy; the lever can be arranged on the rack in a pivotal mode; the two ends of the lever are respectively provided with the stopper and the buoy; one end of the stopper is movably connected with the lever, so that the stopper is always vertically suspended above a bottom pouring tube of the flow plate; the buoy and the stopper are positioned at the same side of the lever; the buoy is connected with the lever through a buoy connecting rod; the buoy is ascended and descended along with the liquid surface; the stopper positioned at the other end of the lever reversely moves with the lever; the stopper is descended to reduce a gap between the stopper and the bottom pouring tube when the liquid surface is ascended, and the stopper is ascended to increase the gap between the stopper and the bottom pouring tube when the liquid surface is descended, so that increase and decrease of flow is automatically controlled by virtue of ascending and descending of the liquid surface in the crystallizer, and therefore, the liquid level in the crystallizer realizes dynamic balance and is kept within a reasonable range, liquid surface rolling is not caused, and secondary pollution is avoided; and a pure mechanical structure is adopted, the structure is simple, and the using cost is low.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy melting and casting, in particular to an aluminum alloy melting and casting equipment. Background technique [0002] In the production of aluminum alloy casting, in order to ensure the smooth formation of ingots and improve the metallurgical quality, we need to control the flow of the flow plate and the liquid level of the aluminum liquid in the crystallizer to make it reach a relatively stable state. [0003] At present, there are mainly two types of devices used to control the flow rate of the flow plate and the liquid level in the crystallizer in aluminum alloy melting and casting equipment: one is a boat-shaped funnel. Below the betting tube. Use the buoyancy of the ship-shaped funnel given by the aluminum liquid in the crystallizer to control the opening and closing gap between the injection pipe and the ship-shaped funnel, so as to achieve a dynamic balance, so as to achieve the purp...

AI Technical Summary

Problems solved by technology

Use the buoyancy of the ship-shaped funnel given by the aluminum liquid in the crystallizer to control the opening and closing gap between the injection pipe and the ship-shaped funnel, so as to achieve a dynamic balance, so as to achieve the purpose of controlling the liquid level, but the ship-shaped funnel needs to be installed after the bottoming and slag breaking Then put it into the molten aluminum, which will cause the liquid surface to roll, destroy the oxide film formed on the surface of the molten aluminum, cause secondary pollution, and affect the quality of casting; another stopper connected to the liquid level detector through the actuator, When in use, the stopper rod hangs directly above the injection pipe. When the flow starts, as the liquid level in the crystallizer rises, the liquid level detector transmits the signal to the actuator, and the actuator drives the stopper rod down, and the stopper rod The gap between the stopper and the injection pipe decreases, and the supply flow rate decreases; when the liquid level in the crystallizer is lower than the rated height, the actuator acts, the stopper rod rises, and the supply flow gap between the stopper rod and the injection pipe increases. Large, the supply flow increases, so as to achieve the purpose of controlling the liquid level. Controlling the liquid level through the stopper rod will not cause the liquid surface to roll over, and will not damage the oxide film and cause secondary pollution. It is an ideal aluminum alloy. Melting and casting equipment, but this kind of device needs to use more expensive liquid level detectors, actuators and other equipment, the cost is high, and it needs frequent maintenance

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