Muffle furnace maintenance should note:

1, when the first use of a muffle furnace again after disabling or long-term use, the oven must be carried out. The oven temperature 200 ℃ time should be four hours. 200 ℃ to 600 ℃ four hours. When used, the furnace temperature shall not exceed the maximum rated temperature, to avoid burning heating element. Prohibit the furnace infusion of liquid and soluble in a variety of metals, Burnout oven below the maximum temperature of preferably below 50 ℃ work, then furnace wire has a longer life.
2, muffle furnace and the controller must not exceed 85% relative humidity, no conductive dust, explosive or corrosive gases in the workplace. Where the grease is attached to a metal material being heated, the volatile gas will affect a large number of heating element surface and etching, so that destruction and shortened life span. Therefore, the heating should be timely prevention and well sealed containers or suitable openings to be eliminated.
3, muffle electric furnace controller should be limited to the ambient temperature 0-40 ℃ range.
4, according to the technical requirements, regular and frequent checks furnace, the controller of the wiring connection is good, whether the indicator pointer moves stuck stranded phenomenon, and because electricity meter calibration potentiometer magnets, demagnetization, up wire, shrapnel fatigue, balance error increases damage caused by the situation.
5, thermocouples do not suddenly pull out at high temperatures to prevent the jacket burst.
6, and keep the furnace clean, timely removal of the furnace oxide and the like things.