What is the performance of the furnace bottom roll?What problem that we should pay attention to in use?According to use the material of different can appear of hearth roll of different material, the quality of hearth roll of continuous annealing furnace is affects the working efficiency and product surface quality, one of the main factors that if use the traditional graphite carbon units and ceramic coating roller will be prone to such as roller surface oxidation and loose pineapple, furnace roll the phenomena that affect the normal production activities.And adapt to the hollow ceramic roller has high strength, high temperature resistance, small thermal expansion, chemical stability, good high temperature stability, deformation, surface smooth and good abrasion resistance, can be said to be the traditional graphite carbon and ceramic coating roller set of ideal replace product.Quartz ceramic hollow roller because of its own characteristics can effectively solve the problem of oxidation and nodular, can avoid the frequent replacement operation, improve the working efficiency to significantly improve the quality of steel strip surface.Of hearth roll of these two kinds of new material, use for a long time also not easy to wear and tear, is carbon life set of 3 to 5 times, and used the old furnace bottom roller can also be reprocessed to use repeatedly, substantially reducing the costs of production.The characteristics of the radiation tube and its effect.And the use of temperature can be as high as 1100 degrees Celsius, suitable for high grade of silicon steel continuous annealing furnace.