Furnace temperature setting method suitable for H-shaped steel rolling heating furnace

Abstract

The invention discloses a furnace temperature setting method suitable for an H-shaped steel rolling heating furnace, which comprises the following steps of: establishing a grid coordinate suitable for an H-shaped steel billet, and calculating the temperature distribution of the H-shaped steel billet in the heating furnace through an H-shaped steel billet temperature calculation model; calculating a proper temperature set value of each combustion control section of the heating furnace through a dynamic furnace temperature setting model; the specific method for building the H-shaped steel billet temperature calculation model comprises the steps that fitting geometry unbalanced node division is carried out on an H-shaped steel billet; determining the internal heat conduction characteristic of the H-shaped steel billet; determining the initial temperature value of each node of the H-shaped steel billet; determining the surface heat absorption characteristic of the H-shaped steel billet. According to the furnace temperature setting method suitable for the H-shaped steel rolling heating furnace, by establishing the H-shaped steel billet three-dimensional temperature field model, temperature calculation of all steel billets in the furnace is achieved, and dynamic adjustment of the furnace temperature of each section is achieved in combination with the optimal temperature rise curve.

Description

technical field [0001] The invention belongs to the technical field of heating furnaces, and in particular relates to a furnace temperature setting method suitable for an H-shaped steel rolling heating furnace. Background technique [0002] H-beam rolling heating furnace heating is an important process in H-beam rolling production. The purpose is to heat the billet to a uniform temperature suitable for rolling, improve the plasticity of the billet and reduce the deformation resistance, so that the rolling reduction can be smoothly achieved during the subsequent rolling mill, and the productivity and operation rate of the rolling mill can be improved. The heating quality of the heating furnace plays a decisive role in obtaining a good cross-sectional shape, precise geometric dimensions and excellent product quality. It can be said that a considerable part of the quality problems in the current H-beam production process is caused by the unstable operation of the heating proces...

AI Technical Summary

Problems solved by technology

The heating quality of the heating furnace plays a decisive role in obtaining a good cross-sectional shape, precise geometric dimensions and excellent product quality. It can be said that a considerable part of the quality problems in the current H-beam production process is caused by the unstable operation of the heating process.

In the case of not knowing the billet temperature in the furnace, the manual setting of the furnace temperature has certain blindness and differences, so it is easy to cause high oxidation burning loss and waste of gas

And increase the work intensity of the operator

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