In many new factories, the elbows on the boiler will be simmered or stamped elbows. The simmered elbows generally have a larger radius and less resistance. The radius of the stamping elbow is basically .5D and 2D, the radius is relatively small, and the resistance is large. However, the simmering and punching elbows are not resistant to wear, and the elbows that transport fly ash for a long time will be worn through, resulting in the leakage of the conveyed materials, which will cause great pollution to the environment after wearing through.
Solution
At present, some old factories have been replaced with Yuanda wear-resistant ceramic elbows after renovation, and the composite high-temperature casting process is adopted. The wear-resistant ceramic elbows have a relatively large radius, and the fly ash is transported for a long time. The inner wall ceramics are more polished and smoother without scaling . The hardness reaches HV400, the connection method is the same as the steel pipe connection, it can be connected by flange or welding, and the installation is more convenient.
structure
Wear-resistant ceramic elbow outer layer 20# steel pipe, middle layer transition layer (metallurgical combination), inner layer corundum ceramic.
