Short process production technology of ultrathin aluminium foil

Abstract

A short technological route for manufacturing ultra-thin aluminum foil includes such steps as smelting to obtain molten aluminum, casting-rolling to become plate, cold rolling while annealing twice to make its thickness to be 0.3 mm, and inreversible 4-roller rolling to obtain aluminum foil.

Description

technical field [0001] The invention relates to a production process of aluminum foil, in particular to a short-flow production process of ultra-thin aluminum foil. Background technique [0002] The finished aluminum foil has a wide range of uses, requiring stable product quality, uniform material structure, and a considerable market price. At present, the traditional production process of aluminum foil is to use the "hot rolling method": firstly, the primary aluminum is smelted and cast into a large billet, and then the billet is evenly heated and hot-rolled to make a billet; then rough rolling and finish rolling to the finished product. The entire process is long, requires large-scale melting and casting equipment, large-scale investment (ranging from more than one billion to several billion RMB), and requires a large production site. The billet needs to be milled first, and then reheated to The rolling process can only be entered after the temperature is above 500°C. Si...

AI Technical Summary

Problems solved by technology

This method has a short process flow and does not require a large production site. Only one casting and rolling unit is needed. The billet can enter the rolling process without face milling and secondary heating. The yield can reach more than 85%, but the produced The quality of the finished product is poor, and the internal structure of the material is anisotropic, so it cannot be used for processing aluminum cans.