The present invention provides a sand shell production line for high-speed railway castings and a production method thereof, relating to the technical field of sand shell production, comprising: a base frame; anchor bolts are threadedly connected to the lower end of the base frame, a barrel is fixed at the upper end of the base frame, an end plate is installed at the right end of the barrel through bolts, two groups of conveying screws are installed inside the barrel through bearings, gears are fixed at the left ends of the two groups of conveying screws, and the two groups of gears are meshed with each other. In the present invention, double conveying screws are used for mixing and extrusion of sand shell raw materials. The rotation of the conveying screws can generate strong shear force and mixing force on the materials, enabling rapid and uniform mixing of the sand shell raw materials. The twin-screw extruder has a fast extrusion speed and high production efficiency, which can effectively improve the sand shell production efficiency. A gap is reserved between the spiral section of the double conveying screws and the inner wall of the barrel, and the materials are subjected to the friction force generated by the rotation of the conveying screws in the gap and advance spirally along the cylinder wall. The spiral motion trajectory greatly prolongs the residence time of the materials in the barrel and enhances the dispersive mixing effect.
Country Code: CN
Application Number: CN202410408644.8
