Excellent carbon-steel on-line forecasting and tissue sorbitizing controlling method

Abstract

The invention discloses a method for on-line prediction and control of microstructure sorbite of high-quality carbon steel, which comprises the following steps: according to the material parameters and chemical composition, the cooling temperature of the air-cooling section is adjusted in the air-cooling section of Stelmo control cooling ; In the water-cooling section that controls the cooling, according to the different cooling methods of each section, at each time step, according to the position of the node, select the corresponding heat exchange coefficient, and continuously correct the heat exchange coefficient according to the self-learning method ; In the phase change process of Stelmore controlled cooling, according to the change of phase change heat, adjust the phase change process of Stelmore controlled cooling; in the process of Stelmore controlled cooling, provide parameter detection, online prediction and Control various performance indicators, and constantly monitor the proportion of sorbite in the production process of U-Carbon wire rod. It makes the high-quality carbon steel wire rod have good pulling performance.

Description

technical field [0001] The invention relates to the technical field of metallurgical industry, in particular to an on-line prediction and control microstructure soxhletization method of high-quality carbon steel. Background technique [0002] China's metallurgical industry production, especially the production of steel wire rods, has leapt forward with the rapid development of China's economy in the past 20 years, and its output has continued to increase. According to incomplete statistics, my country currently has more than 100 imported and domestic high-speed wire rod production lines, of which A large number of wire products are produced. [0003] In the existing production process, in order to reduce production costs, many wire products factories have canceled some heat treatment processes before reprocessing the wire rods, and directly pull the wire rods without heat treatment, which requires the wire rod itself to be drawn. very good. [0004] According to a large amo...

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Problems solved by technology

[0018] However, due to the increasing requirements of the market for the proportion of sorbite structure of steel wire rods, the existing technology cannot meet the requirements of online prediction of wire rods under different (or the same) steel types, different specifications, and different rolling speeds. In order to survive the fierce market competition, expand the production scale of high-quality carbon wire rods, and lay a solid foundation for the next step of developing higher-level products, manufacturers need to study better technologies to achieve Different (or the same) steel types, different specifications, and different rolling speeds can predict and control the sorbite structure ratio requirements of wire rods online, and improve the sorbite structure of high-quality carbon wire rods

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