| 20CrMnTiH钢中残余硼对末端淬透性的影响及工艺控制 |
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| 引用本文： | 王芝林,何国宁,高建鹏,贾羽,赵海东.20CrMnTiH钢中残余硼对末端淬透性的影响及工艺控制[J].特殊钢,2022,43(2):40-43. |
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| 作者姓名： | 王芝林 何国宁 高建鹏 贾羽 赵海东 |
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| 作者单位： | 1西宁特殊钢股份有限公司技术质最中心，西宁810005 ；
2北京科技大学新材料技术研究院，北京100083 |
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| 摘 要： | 通过对特钢厂经110 t电弧炉+LF/VD精炼+连铸+热连轧工艺流程生产的400炉钢棒材的数据进行统计,利用末端淬透性实验(920±10)℃50 min后空冷至室温,随后(880±5)℃30 min水淬]和光谱分析获得了 20CrMnTiH系列钢的淬透性和化学成分,发现淬透性与残余硼元素存在线性关系.通过对各冶炼工序...
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| 关 键 词： | 20CrMnTiH钢 末端淬透性 硼 线性回归 |
Effect of Residual Boron on Jominy Hardenability of 20CrMnTiH Steel and Process Control |
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| Wang Zhilin,He Guoning,Gao Jianpeng,Jia Yu,Zhao Haidong.Effect of Residual Boron on Jominy Hardenability of 20CrMnTiH Steel and Process Control[J].Special Steel,2022,43(2):40-43. |
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| Authors: | Wang Zhilin He Guoning Gao Jianpeng Jia Yu Zhao Haidong |
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| Affiliation: | 1 Technology and Quality Centre, Xining Special Steel Co Ltd, Xining 810005；
2 Institute for Advanced & Materials and Technology,University of Science and Technology Beijing,Beijing 100083 |
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| Abstract: | The experimental data of 400 heats of steel produced by 110 t EAF + LF/VD refining + continuous casting + hoi rolling in a special steel plant are statistically analyzed. The hardenability at (920 ± 10) °C for 50 min and then air cooling to room temperature,followed by holding at (880 ±5) °C for 30 min water quenching] and chemical composition of 20CrMnTiH steel are obtained by means of Jominy test and spectral analysis to get a linear relationship between the hardenability and the content of residual boron. By each steelmaking practice analysis it is found that the main source of B in steel is EAF tapping slag. The content of B in steel can be effectively controlled by controlling the amount of tapping slag in EAF tapping. In addition, when the amount of Al2O3 in the refining slag decreases from 30 % to 15% ~20% ,the content of B in steel can be controlled below 0. 000 2%. |
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