Preheating device for aluminum bar production and processing

The utility model discloses a preheating device for aluminum bar production and processing, which comprises a heating assembly, a heating chamber, an oxygen bottle arranged on one side of the heating chamber, and a pipeline arranged at one end of the oxygen bottle; and a preheating assembly. According to the device, oxygen is input into the heating chamber through the oxygen bottle, so that combustion of fuel gas in the heating chamber is accelerated, the fuel gas is fully combusted, tail gas in the heating chamber is input into the steam box through the recovery pipe, and the steam box is heated through waste heat of the tail gas; heated steam is conveyed to the aluminum bar on the fixing frame through the gas conveying pipe and the gas conveying plate, so that the aluminum bar is preheated, the fixing frame is driven by the motor to rotate, the aluminum bar on the fixing frame can be evenly heated, and the problem that when the aluminum bar heating furnace is used for heating, fuel gas cannot be fully combu