Heat treatment technology all over the world have a wide range of application, the application of the heat treatment technology not only improve the product quality of all kinds of products, also brought considerable benefits for the related industries.Therefore, the development of the country and the development of industry is closely linked.That, of course, there is little not the emergence of a variety of advanced auxiliary equipment, furnace bottom roll is a kind of vital equipment heat treatment technology.Furnace bottom roll in annealing process of heat treatment technology, main application is in the ancient processing iron product, is the first to melt, then according to the fabric, then cooling, finally made the corresponding products.Furnace bottom roll is equivalent to the final link, so it is very important, because now the processing of steel products, such as at the end of the annealing process is critical, will affect the quality of the final object.So in life, people is also very high to the requirement of furnace bottom roll, the role of the furnace bottom roll and development, in addition to high temperature resistant, but also has good oxidation resistance, etc., in order to guarantee the quality of the final product.