Method for controlling temperature of molten aluminum in aluminum alloy cast-rolling holding furnace

Abstract

The invention relates to the technical field of aluminum alloy cast rolling, in particular to a method for controlling the temperature of molten aluminum in an aluminum alloy cast rolling holding furnace, which is used for accurately controlling the temperature of furnace gas in an electric heating holding furnace and keeping the temperature of the molten aluminum in the furnace within a process requirement range and comprises the following steps of: measuring the height of the molten aluminum in the holding furnace; setting the heating power of the holding furnace; adjusting the heating power of the holding furnace. According to the method, the temperature of the molten aluminum in the holding furnace is stably controlled by adjusting the heating power of the holding furnace and continuously controlling the temperature of the furnace gas, the method is simple, convenient and feasible, the effect is obvious, the problem of overburning of the molten aluminum can be controlled to a great extent, and energy waste and production cost are reduced while the internal quality of cast-rolled products is improved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy casting and rolling, in particular to a method for controlling the temperature of molten aluminum in an aluminum alloy casting and rolling holding furnace. Background technique [0002] The holding furnace is an important equipment in the aluminum alloy casting and rolling process. It plays an important role in the distribution of aluminum liquid, temperature adjustment and melt purification in the process of aluminum alloy casting and rolling. The temperature control method has a great influence on the precise and stable control of the temperature of the aluminum liquid. Influence. [0003] The temperature control method in the prior art is that the operator frequently measures the temperature of the molten aluminum in the holding furnace. When the temperature is lower than the lower limit of the process control, high-power heating is turned on, and the temperature of the molten aluminum r...

AI Technical Summary

Problems solved by technology

The traditional operation method mainly has the following deficiencies. First, the holding furnace is in frequent heating and empirical heat preservation. However, the empirical heat preservation is not completely reliable, and the temperature is always in continuous fluctuations, with poor stability; The high-temperature furnace gas overheats the temperature of the molten aluminum on the inner surface of the holding furnace, causing serious overburning of the molten aluminum and affecting the internal quality of cast-rolled products; third, frequent temperature measurement results in more opening times of the furnace door, which consumes more hand-held thermocouples , the labor intensity of the operators is relatively high, which also causes a large loss of heat in the holding furnace, resulting in waste of energy, which is not conducive to environmental protection