Application​:

RJ2 Series Pit hardening furnace is the national standard energy-saving cycle operation shaft furnace, heat treatment or quenching temperature 850-1200 ℃, mainly for shaft parts, rod-shaped workpiece, roll, 45 steel, stainless steel and other metal materials and mechanical parts of the quenching heat treatment purposes, vertical lifting quenching, the workpiece is not easy deformation, but also on the mechanical parts for annealing, normalizing heat treatment.

Structure instruction:

RJ2 series of high temperature pit furnace structure, the shell is made by a steel plate and steel cylindrical furnace, all with seal welded. Lining using ultra-light saving vacuum ball insulating refractory brick building.Lining and the furnace shell dissecting acid aluminum fiber cotton insulation, insulation powder expansive space filled. Resistance wire used 0Cr27Al7Mo2 high resistance alloy wire wound into a spiral wire shelf mounted on brick hearth. Lid with manual or electric lift. If the user to the need to protect the atmosphere to reduce oxidation of the workpiece can be mounted on a stainless steel lid three pomade injector, dropped into methanol or kerosene to produce a simple protective atmosphere, the lower part of the furnace is installed in a nitrogen inlet pipe can pass into nitrogen or break up the flammable gas, to prevent explosion. To ensure safe operation in the vicinity of the lifting mechanism is equipped with limit switch, this switch shaft furnace with temperature control cabinet power interlock, lid off on the power. When the lid is turned off limit switch that controls power, so the power supply and cut off the heating element in order to ensure safe operation. Hot pit furnace factory supporting automatic temperature control cabinet, thermocouples.