Heat treatment technology in all parts of the world have a wide range of applications, application of heat treatment technology not only improves the quality of products, and brings considerable benefits to related industries. Therefore, the country's development and industrial development are closely linked. Which, ultimately, by the appearance of advanced auxiliary equipment, heat treatment technology of furnace bottom roll is an essential piece of equipment.

Bottom roll is mainly used in the technology of heat treatment annealing process, in fact, when ancient-wrought-iron products, is to melt it, then follow the mold shapeand cooled again, finally made the corresponding product. Bottom roll is equivalent to this last aspect, it is very important, because of the steel plate products, such as,at the end of the annealing process is critical, will affect the final quality of the object. In life, people's requirement for furnace bottom roll is very high, and the role anddevelopment of furnace bottom roll, in addition to other than high temperature alsohas very good oxidation resistance, in order to ensure the quality of the final product.