1. The Manufacturing Process of Ceramic Lined Steel Pipe and Elbow:Ceramic (Corundum: Al2O3) lined abrasion resistant straight pipe andFittings are lined with highly abrasion resistant ceramic by SHS -Self- propagating High-temperature Synthetic process.The composite pipe is composed of three layers: ceramic, intermediate,and steel layers. The ceramic layer is formed by molten alumina at atemperature above 2500 degree. The molten alumina produced from thereaction Fe2O3+2Al=2Fe+Al2O3 spreads on the inside wall of the steelpipe under the influence of a centrifugal force, then solidifies, so the ceramiclayer has high density and smooth surface and bonds to the steel pipe.Theyare widely used to convey highly abrasive material such as fly ash and anyother fine powder material in mine, thermo power generating, coal processingplant, matellurgy,construction,etc. The service life is 10 to 20 times longer thannormal steel pipe.3.Features of Alumina Ceramic:Alumina is a cost effective and widely used material in the family ofengineered ceramics. Alumina ceramics have been developed andoptimized for maximum wear resistance and corrosion resistance.A high density, diamond like hardness,fine grain structure andsuperior mechanical strength are the unique properties that makeit the material of choice for a wide range of demanding applications.Ceramic has uses similar to Cast Basalt but it has greater resistanceto wear in high velocity applications and impact resistance in extremedynamic systems .
Main Properties of Ceramic Item Index Content of Alumina ≥95% Density ≥3.5 g/cm3 Rockwell Hardness ≥80 HRA Impact Strength ≥850 Mpa Bending Strength ≥290MPa Breaking Temper ≥4.8MPa·m1/2 Coefficient of Linear Thermal Expansion 20W/m.K

