The casting and rolling mill is a process in which the aluminum liquid refined by the static furnace is cast and rolled into 6-10 mm cast-rolled plates through the static furnace mouth--liquid level automatic control device--further refining in the degassing box--front box nozzle--casting rollers that rotate in opposite directions and have circulating cooling water inside, so that the aluminum liquid crystallizes and produces a certain deformation rate, thereby realizing the process of casting and rolling the molten liquid metal of aluminum and aluminum alloy into 6-10 mm cast-rolled plates, and then forming cast coils after end cutting heads-----> coiling.
The axis of the casting and rolling mill is configured at an inclined angle with the vertical line of the ground
The liquid level of the furnace and rolling mill must be stable: the liquid level has a flow control device---flow port, which is kept constant by adjusting the outlet flow. Continuous supply is adopted, clean and with consistent chemical composition. In the meantime, the titanium wire feeder feeds the aluminum boron titanium wire into the flow trough at a preset constant speed to achieve grain refinement.
The control device of the liquid level in the front box of the casting and rolling mill: ensure that the front box can continuously supply aluminum liquid to the casting nozzle under a certain pressure. Through the nozzle of the casting nozzle, the aluminum liquid is injected into the cooled roller, and the aluminum liquid is distributed along the roller. After passing through the casting and rolling area, it is then hot rolled to form. A large amount of heat of the aluminum liquid is quickly taken away by the roller filled with cooling water, so that the liquid metal solidifies and cools in a very short time, completing the entire crystallization process of casting and forming a cast-rolled plate.
The horizontal adjustment cylinder of the casting nozzle is driven to move, and the horizontal and vertical micro-adjustments are completed manually. The manual micro-adjustment is equipped with a mechanical locking device to ensure long-term reliable operation. During operation: the operator can make individual and precise adjustments to each side of the casting nozzle according to the process requirements.
Each roller of the casting and rolling mill is driven by an AC motor and a planetary gear reducer, and the synchronization is realized by a fully digital control system. Carbon powder with separation and lubrication effects is sprayed on the surface of the roller through the flame spraying system to prevent aluminum liquid from sticking to the roller.
After the cast-rolled strip leaves the roll gap, it passes through the lead-out roller, pinch roller, hydraulic shear, and deflection roller on the frame, and is coiled by a coiler driven by an AC motor. The coiler provides tension for the cast-rolled strip. The shearing adopts a horizontal shear, which can move with the strip to ensure that the strip has no defects such as scratches and hooks during shearing.
The finished coil is unloaded from the coiler by the unloading trolley and the hydraulic coil pusher, completing the entire casting and rolling production process.
