Ceramic wear-resistant elbows have gained market favor and continuously replaced some traditional wear-resistant materials. The fundamental reason lies in their excellent product quality and their multifaceted advantages over traditional wear-resistant materials such as cast stone, cast steel, and bonded ceramic materials.

Performance Comparison

Cast Stone

Previously, most factories used cast stone elbows, which are characterized by their fragility, cracking, and wear on the mating surface. The wall thickness ranges from 25-35mm, with some as thick as nearly 40mm. After short-term wear and cracking on the inner side, coal powder wears out through the gaps to the outer side, resulting in a lifespan of just one major overhaul period. Moreover, internal air holes are common, easily leading to hidden dangers, and once worn through, they cannot be repaired on-site.

2. Cast Steel

Ductile iron, including alloy steel, is widely used in the wear-resistant field, with relatively simple manufacturing processes. However, due to the inherent limitations of the material's properties and the process constraints, the surface hardness of ductile iron materials (about 60) is significantly lower than that of ceramics (over 80), and its wear resistance is only a fraction of, or less than, that of ceramics (specific data can be found in the wear test reports from the Powder Metallurgy Institute of Central South University and the jet wear test results from the Kyushu Institute of Industrial Ceramics in Japan). Elbows made from this material can be worn through after more than a year of operation. Moreover, cast iron pipes are thick-walled and extremely heavy, have a high carbon content, and poor weldability, requiring on-site heat treatment of the welds, which presents considerable difficulties for installation and maintenance on-site.

3. Apply ceramic tiles

Micro gaps are numerous, the material is brittle and prone to cracking, and it easily has local detachment and failure. Repairing after detachment is also difficult.