| 摘要 |
PURPOSE:To remove non-metallic inclusion in molten steel at high efficiency, to obtain a filter having high strength to thermal shock and to facilitate treatment by arranging plural protruding parts having non-acute angle at the tip part around aggregate of the filter. CONSTITUTION:The filter has laminate network type skeleton structure and arranges the plural protruding parts 2 having non-acute angle at the tip part around the aggregate 1 having these network structure. By this protruding parts 2, contacting area of the aggregate 1 with the molten steel is increased and the removal efficiency of the non-metallic inclusion is improved. Further, the filter, which has high strength to the thermal shock and is easy to fit, is obtd. |
