Tempering furnace

The tempering furnace is used for tempering in the air of general metal parts and quenching, annealing and aging heat treatment of aluminum alloy die castings, pistons, aluminum plates and the like. The outer casing is welded by steel plate and section steel. The trolley is welded by steel and steel plate. The trolley passes the soft contact with the lining and the sand sealing mechanism to reduce heat radiation and convection loss, and effectively ensure the sealing of the furnace body.