The utility model discloses a box-type resistance furnace, which belongs to the technical field of heat treatment equipment, and comprises a box-type resistance furnace main body, a
heating element and a hot air circulating mechanism, the device is novel in design and ingenious, the heating elements adopt resistance wires with special
layout and are distributed at all corners of the furnace body so as to achieve uniform heating, the hot air circulation mechanism comprises a fan and an
air channel and is used for circulating heated air to all parts of the furnace body, the uniformity of temperature distribution is further ensured, and through the
layout of the heating elements, the
heating efficiency is improved. A multi-layer staggered mode is adopted, namely, heating elements on different
layers are staggered in position so as to increase the coverage area of heat
radiation and improve the
heating efficiency, a hot air circulation mechanism is further optimized, a flow guide groove is formed in an
air channel, hot air can flow according to a preset path, it is ensured that each corner in the furnace can be fully heated, and the
heating efficiency is improved. And the practicability of the device is greatly improved.