Development of the Guidance Software of Precise Calcium Treatment and Its Application in Special Steel Production

Wang Weijian; Yang Wen; Ren Ying; Zhang Lifeng

doi:10.20057/j.1003-8620.2023-00111

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Development of the Guidance Software of Precise Calcium Treatment and Its Application in Special Steel Production

Smelting and Solidification | 更新时间：2026-01-21

- Development of the Guidance Software of Precise Calcium Treatment and Its Application in Special Steel Production
- Special Steel Vol. 44, Issue 6, Pages: 25-30(2023)
- 作者机构：
  
  1.北方工业大学机械与材料工程学院，北京 100144
  2.北京科技大学冶金与生态工程学院，北京 100083
- 作者简介：
- 基金信息：
- DOI：10.20057/j.1003-8620.2023-00111
  CLC： TF769.2
- Received：06 June 2023，
  
  Published：01 December 2023
- 稿件说明：
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王伟健,杨文,任英等.精准钙处理指导软件开发及在特殊钢生产中的应用[J].特殊钢,2023,44(06):25-30.

Wang Weijian,Yang Wen,Ren Ying,et al.Development of the Guidance Software of Precise Calcium Treatment and Its Application in Special Steel Production[J].Special Steel,2023,44(06):25-30.
王伟健,杨文,任英等.精准钙处理指导软件开发及在特殊钢生产中的应用[J].特殊钢,2023,44(06):25-30. DOI： 10.20057/j.1003-8620.2023-00111.

Wang Weijian,Yang Wen,Ren Ying,et al.Development of the Guidance Software of Precise Calcium Treatment and Its Application in Special Steel Production[J].Special Steel,2023,44(06):25-30. DOI： 10.20057/j.1003-8620.2023-00111.

摘要

针对钢液钙处理过程存在的钙收得率低、钙处理效果不稳定等难点问题，建立了精准钙处理模型，开发了精准钙处理指导软件，并应用于特殊钢生产中夹杂物控制的钙处理。采用Wagner模型计算钢液中组元的活度，采用离子-分子共存理论计算液态夹杂物组元的活度，然后根据系统自由能最小原理求解热力学平衡，得到钢液成分和夹杂物成分的变化。同时，建立了深度神经网络模型，实现了钙处理过程钙收得率的精确预测。在此基础上开发了以夹杂物成分精准控制为目标的钢液精准钙处理在线指导软件，可根据实际钢液成分和温度等操作条件，结合现场操作相关参数，计算出合理的喂钙线长度。该指导软件在特殊钢生产中得到了良好应用，能够为实际特殊钢生产过程的钙处理操作提供在线精准指导，稳定提升钙处理效果，减少含钙合金的消耗量，促进特殊钢生产的绿色化发展。针对45Mn钢进行工业试验，根据精准钙处理，软件计算结果，将喂钙线长度由应用前的320～350 m降低至200 m，可以较好的将钢中夹杂物改性为液态，工业试验结果与计算结果吻合较好。

Abstract

In response to the difficulties of low calcium yield and unstable effect in the calcium treatment process of molten steel， a precise calcium treatment model was established， and a guidance software of precise calcium treatment was developed and applied to the calcium treatment practice of special steel for the inclusion control in the current study. The Wagner model was used to calculate the activity of components in molten steel， and the ion molecule coexistence theory was used to calculate the activity of components in liquid inclusions. Then， the thermodynamic equilibrium was solved based on the principle of minimum system free energy to obtain the changes in steel composition and inclusion composition. At the same time， a deep neural network model was established to accurately predict the calcium yield during calcium treatment. On the basis， an online control software for precise calcium treatment of molten steel has been developed with the aim of precise control of inclusion composition. Based on actual operating conditions such as molten steel composition and temperature， combined with relevant on-site operation parameters， a reasonable length of calcium cored wire can be calculated. This guidance software has been well applied in the production of special steels and can provide online and accurate guidance for calcium treatment operations in the actual production process which can improve the efficiency of calcium treatment process， reduce the consumption of calcium containing alloys as well as promote the green development of special steel production. Industrial experiments were conducted on 45Mn steel， based on the calculation results of precise calcium treatment software， the length of the calcium feeding line was reduced from the range of 320-350 m to 200 m， which can effectively modify inclusions in the steel into liquid state. The industrial test results were in good agreement with calculation results.

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references

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