Strong large diameter one kind of heat resistant magnesium alloy thick cylindrical member forming process

The present invention discloses a large-diameter thick-walled tubular strong heat resistant magnesium alloy member forming process. The process route is: large melting furnace, semi-continuous casting, homogenization annealing, temperature multidirectional forging, mechanical perforation, ring roll forming and aging treatment, wherein the temperature change multidirectional forging on a hydraulic machine, reduction speed of 200-400mm / min upsetting pass reduction of 30-40%, stretching pass reduction of 5-10%, before the ring rolling ingot incubated 4-8h 380-400 deg.] C, 60-80% rolling reduction. rolling outside diameter Ф700-1100mm, a wall thickness of 50-100mm, the height of 300-700mm thick-walled cylindrical member. The thick-walled high strength tubular member, heat resistance, and meet the dimensional and performance requirements of the aeronautical and aerospace structures.