Temperature distribution calculation method in H-shaped steel billet heating process

Abstract

The invention discloses a temperature distribution calculation method in the H-shaped steel billet heating process, and belongs to the field of metallurgical automation process control. The calculation method comprises the steps of determining the furnace temperature of the position where a steel billet in a furnace is located according to the initial furnace temperature set value; selecting the calculation area including a water beam, and carrying out mesh division; calculating the heat flow density of the surface of the steel billet; and outputting the steel billet temperature after the heating time is up, and the heating requirement is met, and drawing the steel billet temperature rise curve. According to the method, heat exchange generated between the water beam and the steel billet and the heat exchange generated due to the water beam shielding effect are fully considered, the value of the drawn stele billet temperature rise curve is more close to the actual measurement value, and during online production, energy is saved, and consumption is reduced.

Description

Technical field [0001] The invention relates to the field of metallurgical automation process control, in particular, to a method for calculating the temperature distribution of an H-shaped billet during heating. Background technique [0002] Industrial furnaces and kilns are a major energy consumer in my country, and their energy consumption accounts for about 25% of the country's total energy consumption. In the metallurgical system alone, there are more than 5000 heating furnaces for various steel rolling, and their energy consumption accounts for about 60-70% of the total energy consumption of the metallurgical industry. In recent years, due to the adoption of comprehensive energy-saving technologies, typical steel rolling furnaces, soaking furnaces, heat treatment furnaces and forging furnaces have achieved certain energy-saving benefits, but there is still a big gap compared with foreign steel companies. It can be seen that the energy-saving potential of industrial furnace...

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Problems solved by technology

[0004] In view of the above problems, the purpose of the present invention is to provide a method for calculating the temperature distribution of the H-shaped steel billet during the heating process, taking into account the heat exchange generated between the water beam slider and the H-shaped steel billet and the shielding effect of the water beam, to solve the problem of the model The problem that the calculated heating curve of the H-shaped billet in the furnace has a large deviation from the measured value

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