Wear resistance and surface service life depend a great deal on the angle of impact of the flow of material being handled and on the strength and hardness of the wear resistant material. Abrasion resistant alloy steel, polymers, cast basalt, silicon carbide and high alumina ceramics are the major wear resistant lining materials being used in industry today. Of these materials, only Duralox high alumina ceramic is proven to have the required toughness and versatile durability to resist impact and sliding wear from both high and low angle sliding abrasion.
Duralox ceramic is sapphire hard, 9 on the moh's hardness scale, second only to diamond in hardness among natural materials.
Common industrial ceramics, such as 85-87% alumina ceramics have been used to resist sliding abrasion in chutes and in pipes where the material being handled hits at less than 40 degrees. Service life of these ceramics is limited, due to higher percentage of silica and residual glass that they contain. Silica and glass are much softer and weaker materials than alumina.
Common wear resistant ceramics contain 8 to 13% silica and glass, therefore they wear out faster than those with 2-3% silica and glass, resulting in frequent maintenance of equipment, expensive material replacement and plant down time greatly affect on plant profitability. Abrasion resistant steel deforms and gouges easily 85-87% content alumina composites and silicon carbide ceramic erodes and fracture quickly. To resist impact abrasion, an exceptionally strong, tough, dense high alumina ceramic with very low glass-silica content is required. To ensure your wear resistant lining withstands the abuse of impact and sliding abrasion, make sure the wear resistant linings you use are only Duralox. Duralox ceramic is above average strength enhanced alumina ceramic with lowest percentage of silica and glass content in its class.
Pattern of angle impact abrasion Low angle sliding abrasion
When flow of abrasive material hits a wear surface at a shallow angle or passes parallel to it, the type of wear that occurs in friction is called
High angle impact abrasion
When the contact angle of the flow of material exceeds 40 degrees, developed impact is the primary cause of wear and impact abrasion which is much more forceful and destructive wear mechanism than the sliding abrasion. Duralox endures where others have failed.