How to deal with unexpected failure of continuous bright annealing furnace

How to deal with unexpected failure of continuous bright annealing furnace

1. Ammonia decomposition gas is stopped due to power outage or ammonia shutdown during work. The manual and electromagnetic valve filled with nitrogen should be opened in time to keep the air intake stable. If the nitrogen input is insufficient for a while, you can open the nitrogen filling bypass manually instead.

2. When the power is cut off during the operation of the equipment, the ammonia decomposition gas is changed to nitrogen in time. If the amount of nitrogen is not enough, the nitrogen bypass can be opened manually, and the furnace is cut off to cool down.

3. If the cooling water is over-temperature, the regulating valve on the cooling water outlet should be adjusted. The water resistance is reduced to increase the flow rate and lower the water temperature.

4. When water is stopped during work, nitrogen should be filled and the temperature should be lowered to prepare to shut down the furnace. And quickly find out the cause, if it can not be resolved in a short time, immediately stop the furnace.

5. Band break treatment: When the steel band is disconnected in the furnace, the furnace temperature is reduced to 800°C, and the nitrogen flow rate is 18m3/h. Before observing, vent the pipe fire and ignite it 2 minutes after the fire is extinguished. (1) If there is a fire, continue to fill with nitrogen at 18m3/h. 15 minutes after the nozzle fire is extinguished, open the front and rear pressure plates and wool felt. Wear belt. (2) If there is no fire, change to the flow rate of 10m3/h. After 15 minutes, open the front and rear pressure plates, wool felt, and put on the belt.