Pit Type Gas Carburizing Furnace

Description�� Pit type Gas Carburizing Furnace is used for heat treatment of steel workpieces carburizing and protective atmosphere quenching. Application: ����Carburizing Furnace is a new energy-saving cycle operation Heat treatment Furnace, mainly used for steel workpiece Gas cementation. For choosing the ultra-light, energy-saving, high temperature materials and the advanced integration of a closed water-cooled industrial furnace blower, the Furnace of this kind has uniform temperature, uniform carbon potential atmosphere, uniform Carburizing layer, faster warming, good heat-insulating property, fast carburizing speed, even no carburizing atmosphere leaks out when the furnace pressure gets higher. Thus it promotes the production efficiency and makes a good carburizing quality. Structure Carburizing Furnace consists of furnace shell, lining, Lid lifting body, sealed furnace blower, Muffle can, heating element and Electronic Control System, etc. Furnace shell is welded steel plates and shaped steels. The furnace insulation layer and refractory layer are of Energy-saving composite structures that constructed of Density 0.6g/cm3 Ultra-high-intensity light energy firebrick, aluminum silicate fiber, Diatomite insulation bricks and asbestos board. Loading and lifting mechanism of the furnace cover is composed of motor and wheel pump, etc. When open the cover, it will rise at 30-70mm/s as soon as you press the control button. For the safety, two overtravel-limit switches are mounted on the lifting shaft. While the furnace cover is rising, the under-part switch will automatically cut off the control power to make the heat element stop working. The upside of the switch limits the height of the lifting shaft in case that the lifting shaft rise too high and pull away. The seal fan is mounted to the furnace cover, used to make the atmosphere in Muffle Can uniform by stirring it. It also makes the furnace temperature tend towards uniformity. There are three pipes mounted on the furnace cover connecting into the Muffle can. One pipe is mounted with a triplehead stainless steel instillator on top, through which dropping methanol, kerosene, or other organic liquids into the furnace. Those liquids can be adjusted in quantity. The ammonia gas hole in this tube can be used for nitrocarburizing (It can be sealed when out of nitriding).One tube of the other two is a sampling tube made from refractory steel (casting).The upside of this tube is connected to a “U” glass manometer, monitoring the Muffle Can to maintain furnace pressure and keep Carburizing and Nitrocarburizing normal. Heat element is made of helically wound alloying heater strip, mounted on the inner wall of furnace brick lining, sending signals to the automatic temperature control cabinet by means of extension wire. The temperature control cabinet automatically controls, adjusts and records the heating-up temperature.