Energy -saving trolley -type resistance furnace ,the shell is welded by steel plate and section steel,the bottom of the furnace body is connected with the trolley light rail as a whole, users do not need to install the foundation,just put on the bat cement boor can be used,furnace lining material with excelent heat insulation performance of aluminum silicate refractory production. it is mainly used for normalizing,annealing ,quenching and tempering of casting and foreigns.