Full definition
Sacrificial wear-resistant coating applied to the interior surfaces of material handling equipment — chutes, hoppers, cyclones, pipes, mixer drums, and transfer points — to protect the structural steel from erosive and abrasive wear by the flowing material. Material options selected by wear mechanism: (1) Natural rubber NR (35-60 Shore A, 6-50 mm) — best for impact and gouging abrasion from large particles at high angles; 5-10x life of steel in impact zones; bonded with adhesive or bolt-on panels. (2) Alumina ceramic tiles (92-99% Al₂O₃, 10-50 mm) — best for fine-particle sliding abrasion at low angles; 10-20x life of steel; adhesive-bonded. (3) Rubber-backed ceramic composite — combines ceramic sliding resistance with rubber impact absorption; the gold standard for combined wear. (4) Chromium carbide overlay steel (CCO, 55-65 HRC) — for severe sliding abrasion where impact is moderate. (5) Polyurethane (85-95 Shore A) — for fine abrasion in wet slurry environments; 3-10x rubber life in fine-particle erosion. (6) Tungsten carbide (HVOF or weld overlay) — extreme point-wear applications (nozzles, spray tips). Selection depends on: particle size, impact angle, flow velocity, temperature, and mounting method. Brands: Rema Tip Top (Remaline), Metso, Weir Minerals (Linatex), Multotec, and Kingcera.