Muffle free furnace structure: a circulation channel is formed in the whole furnace to ensure the uniformity of temperature and atmosphere, prolong the service life of radiant tube and improve the quality stability of workpiece.

Mechanical transmission mechanism: make the conveyor belt balanced and reliable, not "run out of alignment and jam", reduce the failure rate by 60-70%.

The new sealing device of furnace door can save 55-65% of the gas consumption, keep the furnace in positive pressure state ≥ 10-100pa, have deep infiltration layer, improve efficiency by 30-40%, and have smooth surface without decarburization.

Perfect automatic control system (including atmosphere control), safe and convenient, can be equipped with feeding machine, cleaning machine, tempering furnace to form an automatic production line.