Technique for casting and rolling to produce 5052 alloy with electrolytic aluminium liquid short process flow

Abstract

The invention relates to a 5052 alloy technique which produces electrolytic aluminum by casting and rolling in the liquid short process. The procedures comprises the melting of alloy aluminum liquid, components adjusting, refining, gas removing, filtering, casting and rolling; the alloy aluminum liquid has 60 to 70 percent of electrolytic aluminum liquid and 30 to 40 percent of aluminum ingot or aluminum waste; the refining is powder injection refining in a melting furnace, CCl4 refining and holding furnace refining with argon; when casting and rolling, the temperature of a front box is 715 to 725 DEG C, and the casting and rolling speed is 600 to 700mm / min. The technique is characterized in that the procedures are simplified, and energy can be saved, thus improving production efficiency and saving production cost.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal processing, and in particular relates to a new technology for direct casting and rolling of 5052 alloy with electrolytic aluminum liquid. Background technique [0002] At present, the technology of producing 5052 alloy by hot rolling billet supply is very mature, and hot rolling production is mostly used at home and abroad. The hot rolling process is: smelting→purification→ingot casting→head and tail cutting→face milling→heating→hot rolling→packaging. However, in the production process of the hot rolling supply and damage method, the metal burning loss during the smelting process is 2.5%, the head and tail amount is 6%, the milling amount is 5.5%, the head and tail amount is 2% during the hot rolling process, and the hot rolling production is 7mm The final yield of the thick strip is 85% (excluding the waste products produced in the ingot casting and hot rolling process). If considering...

AI Technical Summary

Problems solved by technology

In addition, in the production process of 5052 alloy, there are still the following technical difficulties: Compared with 1××× and 8××× alloys, 5052 alloy has a wider melt crystallization temperature range, greater deformation resistance during casting and rolling production, and edge cracks wider

The 5052 alloy has poor fluidity, high viscosity, easy to stick to the roll, and relatively difficult interface lubrication

The temperature of the electrolytic aluminum liquid is very high, and the gas slag content is much higher than that of the remelted aluminum ingot melt, so it is more difficult to purify the melt