High-temperature box-type resistance furnace

A high-temperature box-type resistance furnace relates to the field of resistance furnaces and comprises a furnace body, a control panel, a furnace door and a heating cavity, the heating cavity is formed in an inner cavity of the furnace body, the furnace door is rotatably connected to the surface of the heating cavity, the control panel is embedded in the surface of the furnace body and located below the furnace door, and a ceramic heat insulation frame is arranged on the inner wall of the heating cavity. Limiting grooves are formed in the top and the two sides of the inner wall of the ceramic heat insulation frame at equal intervals, resistance wire heating pipes are embedded in inner cavities of the limiting grooves, guide rails are symmetrically arranged at the bottom of an inner cavity of a heating cavity, sliding plates are slidably arranged on the surfaces of the guide rails, and limiting rods are symmetrically arranged on the two sides of the surfaces of the sliding plates. An object is fed into the h