Repair of gas kiln tongue grille
Thread Content
The tongue breaker is an important separation device in a gas-fired kiln. It controls the mixing degree of air and gas and the angle of flame ejection. During long-term use, due to the harsh working environment of the tongue flue, erosion by alkaline exhaust gas at high temperatures, the influence of temperature differences in the heat exchange cycle, airflow erosion caused by the increase in pressure caused by clogging of the grid in the later stages of the kiln, as well as improper kiln baking and daily operations, the tongue flute will be damaged early. The working environment is harsh, often causing deformation, fire penetration and even falling off, affecting the melting effect, thermal efficiency and safety of key parts of the kiln. How to completely repair the deformation and shedding of the tongue mold, solve the adverse impact of the tongue mold problem on the melting in the later stages of the kiln operation, reduce the kiln burning damage, and extend the kiln life?
This is a difficult job. First, we need to find out the material of the tongue brick. Currently, AZS bricks are generally used. In addition, you should also consider using materials other than tongue bricks. If you use silica bricks, due to the reaction between the two at high temperatures, the contact points will often melt, causing fire and affecting normal use. If the tongue briquettes often blow up and fall off the bottom plate, it will affect the direction of the flame and also affect normal production. Falling bricks that fall on the floor need to be cleaned up in time by opening holes in the side walls and cleaning them. If it is not cleaned in time, it will affect the distribution of the flame over time, and it may stick to the bottom plate, making it impossible to clean it in a hot state. Someone once tried to use oxygen to melt it away for cleaning, but failed. is bad. If you want to completely repair it, first do it in a cold state. The second is to do it in a hot state, block the flames on the front and rear sides, and then perform the operation.
Tongue scars can be hot repaired using ceramic welding.
Using ceramic welding repair, the results are not very good from the application effect. In addition, ceramic welding repair is basically technically mature, but there are also cases of failure. In addition, the cost is high and it is a last resort.