Continuous casting and rolling production process of 3014 aluminum alloy plate strip

Abstract

The invention discloses a continuous casting and rolling production process of a 3014 aluminum alloy plate strip, which belongs to the field of aluminum alloy manufacturing, and adopts electrolytic aluminum liquid as a raw material to produce a casting and rolling blank of the 3014 aluminum alloy strip, the electrolytic aluminum liquid belongs to an overheated melt and is high in gas and slag content, so that a certain amount of aluminum ingots or aluminum blanks and aluminum wires need to be added, and the production cost is low. Therefore, the number of free crystal nucleuses in the melt is increased, and the effect of refining crystal grains is achieved. Due to the addition of aluminum ingots or aluminum blanks and aluminum wires and high gas and slag content, a stricter melt refining and purifying process needs to be carried out. In order to ensure that a cast-rolled blank obtains a good fine grain structure, the molten aluminum smelting temperature is controlled within the range of 690-700 DEG C, meanwhile, the smelting time is shortened, and the number of non-spontaneous crystal nucleuses in molten aluminum is effectively kept.

Description

technical field [0001] The invention relates to the field of aluminum alloy manufacturing, in particular to a continuous casting and rolling production process for 3014 aluminum alloy strips. Background technique [0002] Aluminum and aluminum alloy plates have the characteristics of high specific strength, good corrosion resistance, good processing performance and excellent welding performance, and are widely used in the fields of national economy, national defense and military industry such as transportation, aerospace, chemical industry and medical equipment. At present, aluminum and aluminum alloy plates are widely produced by twin-roll casting and rolling process and direct-cooling ingot hot-rolling process. There are problems such as many processes, long process, large energy consumption, and high cost. The continuous casting and rolling process is to integrate the casting process and the rolling process on the same production line. A hot rolling machine is arranged be...

AI Technical Summary

Problems solved by technology

Due to the complex composition of the aluminum alloy, the cooling rate of the slab during the continuous casting process is high, and the uniform annealing between casting and rolling is not possible, the composition segregation and uneven structure are easy to occur in the casting structure, which affects the processing performance of the subsequent slab.

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