Precautions for using high temperature box type resistance furnace

Do not change the internal parameters of the instrument randomly to prevent the electric furnace from not operating normally. The furnace door is lightly closed and lightly pulled. It is forbidden to directly pour various liquids and dissolved metals into the furnace to keep the furnace clean. When the cold furnace is used, because the furnace chamber is cold and needs to absorb a lot of heat, the temperature rise rate in the low temperature section should not be too fast.