Sieve, used as bar sieve, has enlarged flow cross-section in normal flow direction and has coating on its surface directed against normal flow direction

摘要

Sieve has a enlarged flow cross-section in the normal flow direction and is provided with a coating (10') on its surface directed against the normal flow direction. An Independent claim is also included for a process for the production of the sieve. Preferred Features: The coating is provided in the region of the edges (4) of the surface directed against the normal flow direction. The coating has several layers arranged over each other. The base is provided with wires in the region of the edges. The coating is applied by PVD or CVD or deposition welding. The coating is made from ceramic, metal or hard metal.