Auxiliary heating cooling device for ductile iron casting

The utility model discloses an auxiliary heating cooling device for ductile iron castings, which relates to the technical field of ductile iron casting and comprises a main body device, an upper sealing cover is arranged in the main body device, the bottom surface of the upper sealing cover is movably connected with a bearing bottom frame, and the top of the inner wall of the upper sealing cover is movably connected with an upper sealing ring frame. A first lower sealing ring frame is arranged below the upper sealing ring frame, a limiting block is fixedly connected to the bottom face of the upper sealing ring frame, and a bearing block is fixedly connected to the upper surface of the first lower sealing ring frame. Forged ductile iron castings with high heat are arranged in the first lower sealing ring frame and the second lower sealing ring frame respectively, and then the ductile iron castings are sealed and isolated by the upper sealing ring frame and the first lower sealing ring frame, so that the ductil