High-magnesium aluminum alloy state rolling preparation process

The invention discloses a high-magnesium aluminum alloy state rolling preparation process, and relates to the technical field of aluminum alloy machining. The process aims to solve the problems that in an existing high-magnesium aluminum alloy machining hardening mode, the thickness and the width of a plate are limited, a stretcher with larger tensile force is needed during the tensile strength, and too many machining procedures are adopted. The process mainly comprises the steps of material proportioning, smelting, casting, soaking, sawing, surface milling, preheating, hot rolling and the like, reasonable selection of alloy components, and casting and smelting parameters is achieved, two-stage uniform heat treatment is adopted, and different hot rolling process parameters and the like areselected according to different Mg contents, so that a high-magnesium aluminum alloy plate material with excellent performance is obtained. According to the high-magnesium aluminum alloy state rolling preparation process, co