RT3 series trolley-type furnace, the furnace consists of furnace and heating elements, lining, electrical control cabinet and other components; the furnace with strong convection fan, the entire furnace temperature cycle, the upper and lower temperature to reach consensus; furnace parts and the bottom of the furnace by steel and welded steel, stainless steel welded inside of the furnace wall. Tempering furnace made of stainless steel plate to ensure the air furnace temperature uniformity. Mainly used aluminum materials, high-chromium steel roll tempering after welding repair roll surface to eliminate welding stress tempering tempering and other uses, are energy-efficient furnace tempering cycle operation, the use of microcomputer technology curve automatic temperature control cabinet, Automatic high-precision implement best tempering process curve