Specialized template for increasing steel rolling heating furnace radiation heat transfer area and pouring technology

Abstract

The invention relates to a specialized template for increasing the steel rolling heating furnace radiation heat transfer area and a pouring technology. The specialized template comprises a substrate, and one or more groove convex bodies are arranged on the substrate. Each groove convex body is shaped like a hemisphere or a cylinder or a truncated cone or a wave crest. The specialized template is unique in structure, high in practicability and capable of achieving structure improvement of the furnace wall and the furnace top in the heating furnace pouring process so as to increase the radiation heat transfer area of the inner wall of a heating furnace hearth, the radiation heat transfer capacity can be increased by 20% or above, the flame velocity is slowed down, and the steel billet heating efficiency is improved; accordingly, high-temperature infrared energy-saving paint is poured on the surface of the inner wall of the hearth, the emissivity of the inner wall of the hearth is increased, and then the radiation heat transfer efficiency is improved. The pouring technology is simple and easy to implement and operate, the service life of a radiation heat transfer body is fundamentally prolonged, stopping for secondary construction of a steel rolling heating furnace is avoided, and damage to the furnace wall is avoided.

Description

technical field [0001] The invention relates to a special template for increasing the radiation heat transfer area of ​​a steel rolling heating furnace and a pouring process, belonging to the technical field of steel rolling heating furnace manufacturing. Background technique [0002] The steel rolling heating furnace is the main heating equipment in the rolling mill, and its function is to heat the steel billet that meets the requirements of the steel rolling process. The heating temperature in the furnace chamber of the steel rolling heating furnace is 800-1300°C. The heat transfer method is mainly radiation heat transfer, accounting for more than 80% of the total heat transfer. By increasing the radiation heat transfer area and strengthening the radiation heat transfer, it has a good effect on improving the heating quality of the billet and reducing the fuel consumption. [0003] In the traditional process, the method of reinstalling the heat radiator in the built or op...

AI Technical Summary

Problems solved by technology

However, due to the thermal expansion and contraction of the furnace body and the erosion of high-temperature flue gas in the furnace, it is easy to cause the heat radiator to fall off from the furnace wall.

[0004] Therefore, there is an urgent need to design a new structural form of the inner wall of the steel rolling heating furnace, which can not only solve the problem that the heat radiator is easy to fall off, but also improve the radiation heat transfer effect, which is very necessary

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