Extrusion molding is carried out on an automatic production line composed of ingot heating, extrusion, refrigeration, support straightening, cutting and other technological processes. Machinery and equipment of production line, including medium frequency induction furnace, extruder, oven table, feeding transport aircraft, aluminum profile raising and handing equipment, roller table, support straightening machine, storage table, line setting machine, CNC sawing machine and so on. Ingot heating temperature is generally operated at 400℃~520℃, too high or too low will harm extrusion molding at the same time. Single acting hydraulic press is generally used for extruding machine, and its tonnage is between 1200 tons and 2500 tons. The diameter of the extrusion barrel of the extruder varies with the size of the extruder tonnage. The large tonnage of the extruder and the large diameter of the extrusion barrel. The diameter of the extrusion cylinder is generally in the range of 150mm~300mm. The working temperature of 3004 aluminum extrusion tool is 360℃~460℃, and the extrusion rate is 20m/min~80m/min.