Production line for preparing magnesium alloy sheets by semi-melt extrusion method and technology of production line

The invention relates to a production line for preparing magnesium alloy sheets by a semi-melt extrusion method The production line comprises a feeding device, a rotary extruder, an extruding mould and a magnesium alloy sheet processing device. The feeding device comprises a feeding tube 1, a feeding valve 2 and an argon conveying device 3. The rotary extruder comprises an extruder shell 4, a material-pressing screw rod 5 and a heater 6. The extrusion mould comprises a mould body 7, a tubular cavity 8, a cavity thermal insulation device 9, a valve 10 and a cooling device 11, wherein the mould body 7 has a plurality of vent holes 12. The magnesium alloy sheet processing device comprises a cutting component 13, a slot expanding component 14, a flattening roller set 15 and a synchronous leveling device 16. The magnesium alloy sheet production technology provided by the invention is the magnesium alloy sheet production technology matched with the production line, which comprises the steps of: feeding material, melting material, extruding, plate-making, sealing and the like. Compared with the magnesium ingot hot-rolling technology and the ingotless rolling technology, the production line for preparing magnesium alloy sheets by the semi-melt extrusion method and the technology of the production line provided by the invention have obvious improvements on simple and reliable device and technology, low energy consumption, high finished product ratio and low production cost.