Heating furnace for grain refinement test

The utility model relates to heating equipment, in particular to a heating furnace for a grain refinement test. The heating furnace comprises a furnace body, a cover plate, a controller and a curved edge container, the cover plate is buckled on the front side of the furnace body and plays a sealing role; and the controller is arranged on the upper surface of the furnace body and is used for controlling the temperature and the current. Wherein herringbone heating sheets are mounted on the inner wall of the furnace body, the front sides of the herringbone heating sheets are sealed, the shape of the heating sheets is matched with the shape of the outer wall of the curved edge of the curved-edge container, and heating wires are mounted on the inner walls of the heating sheets for heating; and the curved-edge container is placed in the furnace body and is in close contact with the heating sheet, so that crystal grains are heated more uniformly. And the heat insulation layer is arranged in the furnace body shell, s