THERMALLY SPRAYED ROLL FOR TREATING HOT STEEL SLAB

摘要

PURPOSE:To obtain a thermally sprayed roll for treating a hot steel slab having superior wear and damage resistances by building up a composite material contg. a proper amount of chromium carbide ceramics in a self-fluxing Ni or Co alloy by thermal spraying on the surface of the body of a roll to a specified thickness. CONSTITUTION:A composite material contg. 2-80vol%, preferably >=about 50% chromium carbide ceramic particles having superior wear resistance in a self-fluxing Ni or Co alloy is built up by thermal spraying on the surface of the body of a roll to 0.2-5.0mm thickness. A self-fluxing alloy contg. >=about 50% Ni or Co is suitable for use as the self-fluxing Ni or Co alloy. Thus, a thermally sprayed roll for treating a hot steel slab having superior wear and damage resistance is obtd.