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Production process of aluminum casting and rolling mill

AddTime:2020-05-28 14:54:47   Views:     【 Big Mid Small 】   Print   Close

The function of the aluminum casting hot rolling machine is to cast the original aluminum into a cast-rolled alloy coil suitable for cold rolling. The molten aluminum must be continuously supplied. The aluminum alloy melt must be clean, have a consistent chemical composition, and require a constant liquid level and temperature.

The constant liquid between the furnace and the aluminum casting and rolling mill is essential for the smooth operation of the rolling line. The liquid level is maintained by a simple orifice flow control device by adjusting the outlet flow. Between the furnace and the casting and rolling mill, two aluminum titanium boron wires are inserted into the launder system. The wire is fed by a titanium wire feeder at a predetermined constant speed. The pure aluminum liquid, which maintains a constant liquid level and temperature, then flows into the front box of the casting and rolling mill. The unique 15 ° inclination of the casting and rolling mill combined with the control device in the front box allows the front box to supply molten aluminum to the casting nozzle under extreme pressure. Through the nozzle of the casting nozzle, the aluminum liquid can be injected into the roll cooled by the cooling water, the aluminum liquid is distributed in the width direction of the roll surface, and then the aluminum liquid is cooled and solidified. At this time, the metal is located at the roll gap slightly before the center line of the roll of the casting and rolling mill, and then hot rolled to form. After the cast aluminum is hot-rolled, the roll is the cast-rolled strip.

Each roll of the aluminum casting and rolling mill is driven by a DC motor and a planetary gear reduction box, and the synchronous control is performed by a digital control system. The surface of the casting roll is continuously sprayed with a graphite solution having a separating and lubricating effect.

After leaving the roll gap, the aluminum cast-rolled strip passes through the lead-out roll and then advances in the direction of the rolling line. After passing through the deflector roll, it is wound by a DC-driven down-coiler. The coiler can maintain the tension of the cast strip. When the strip size meets the requirements, the strip needs to be cut without stopping casting and rolling. In order to complete the operation of the casting and rolling mill, the system is equipped with a set of hydraulically driven pinch rollers to maintain the tension at the exit of the casting and rolling mill. The pinch roller is clamped before shearing by the synchronous shear and opened immediately after changing the roll.


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