The main function of the pouring system is to transport the liquid metal from the static furnace to the feed nozzle. During the transportation process, the aluminum melt is further purified to improve the purity of the melt, maintain a certain and stable pressure of the melt, and ensure the casting and rolling went smoothly.
The pouring system consists of a launder, a front box, a distributor, and additional filtering, refining, and deterioration mechanisms.
The launder is the passage of the aluminum melt from the static furnace to the front box. It should have good heat preservation, moisture absorption and corrosion resistance to aluminum melt. If it is necessary to install a filter in the launder, it is necessary to make a transition from a single launder to a double launder and then to a single launder to facilitate the replacement of the filter. The length of the launder should be as short as possible under the conditions of online refining and filtration.
The front box is the tundish. The upper part is connected with the flow trough and the lower part is connected with the aluminum liquid distributor. It can store a certain amount of aluminum melt, and ensure the constant height of the liquid level through a floating funnel or a lever floating mechanism. The front box also requires good heat preservation and moisture resistance. The density of the floating funnel or floating block on the surface of the melt should be less than that of the melt. The entire mechanism should be sensitive and able to adjust to slight changes in the liquid level in time.
Melt distributor: When the cast-rolled strip is wider, some melts are divided into two guide lambda casting nozzles before the casting nozzle (first-level distribution nozzle), which reduces the stroke of the melt in the casting nozzle and ensures the casting The melt temperature in the mouth is uniform.