Ceramic wear-resistant elbows have gained popularity in the market and continuously replaced some traditional wear-resistant materials, primarily due to their excellent product quality and their multifaceted advantages over traditional materials like cast stone, cast steel, and bonded ceramic materials.

Performance Comparison

Cast Stone

In the past, most factories used cast stone elbows, which are characterized by their fragility, tendency to crack, and a wear-resistant surface. The wall thickness ranges from 25-35mm, with some reaching nearly 40mm. After short-term wear and cracking on the inside, coal dust wears through the gaps to the outside, rendering their lifespan just one major repair cycle. Moreover, they often have internal air holes, which can lead to hidden dangers. 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, and its manufacturing process is relatively simple. However, due to the limitations of the material's inherent properties and the process constraints, the surface hardness of ductile iron materials (approximately 60) is significantly lower than that of ceramics (over 80), with wear resistance only equivalent to a fraction of ceramics or less (specific data can be found in the wear test reports from the Powder Metallurgy Institute of Central South University and the results of the jet wear test from the Kyushu Institute of Industrial Ceramics in Japan). Elbows made from this material have been known to wear through after more than a year of operation. Additionally, cast iron pipes are thick-walled and very heavy, have 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. Paste ceramic tiles

Micro gaps are abundant, making the material brittle and prone to cracking and partial detachment. Repairing after detachment is also challenging.