1.海洋装备金属材料及其应用全国重点实验室,鞍山 114009
2.鞍钢集团钢铁研究院,鞍山 114009
李博洋(1991—),男,博士,工程师; E-mail: 18841250870@163.com
收稿:2025-03-05,
修回:2025-04-03,
录用:2025-04-03,
纸质出版:2025-09-30
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李博洋,陆志豪,滕行泽等.ANS-OB法冶炼1Cr13不锈钢关键冶金技术[J].特殊钢,2025,46(05):47-52.
Li Boyang,Lu Zhihao,Teng Xingze,et al.Key Metallurgical Technologies for Smelting 1Cr13 Stainless Steel via ANS-OB Process[J].Special Steel,2025,46(05):47-52.
李博洋,陆志豪,滕行泽等.ANS-OB法冶炼1Cr13不锈钢关键冶金技术[J].特殊钢,2025,46(05):47-52. DOI: 10.20057/j.1003-8620.2025-00057.
Li Boyang,Lu Zhihao,Teng Xingze,et al.Key Metallurgical Technologies for Smelting 1Cr13 Stainless Steel via ANS-OB Process[J].Special Steel,2025,46(05):47-52. DOI: 10.20057/j.1003-8620.2025-00057.
针对ANS-OB冶炼1Cr13不锈钢过程中的关键冶金技术展开研究,通过对该工艺热力学与动力学分析,研究了出钢温度、精炼温度、气体流量、冶炼时间、还原脱氧对冶炼工艺的影响,明确了1Cr13不锈钢冶炼的关键技术指标。结果表明,转炉和中频炉出钢温度应高于1 600 ℃,保证后续精炼温度,减少添加合金导致的温度或者成分不合。ANS-OB工艺精炼温度范围为1 650~1 700 ℃,其供氧强度由0.8 m
3
/(t·min)逐渐降低至0.4 m
3
/(t·min),并逐渐提高供氩强度,具体为O
2
与Ar的流量比为1∶(0.86~2.16),主吹氧时长为30~34 min,将钢水中C含量降至0.08%以下。然后,采用硅铁进行还原脱氧,加入量为10 kg/t,维持供Ar强度为0.5 m
3
/(t·min),将钢水中
w
[O]降至0.003 0%以下。最后,加入硅铁、锰铁等合金调整钢水成分。根据制定的工艺方案进行冶炼,取得
了良好的工业试验结果。
Research was conducted on the key metallurgical technologies in the smelting process of 1Cr13 stainless steel based on the ANS-OB process. Through thermodynamic and kinetic analysis of the process, the effects of steel tapping temperature, refining temperature, gas flow rate, smelting time, and reduction deoxidation on the smelting process were studied, and the key technical indicators for 1Cr13 stainless steel smelting were clarified. The results indicated that the tapping temperature of the converter and intermediate frequency furnace should be higher than 1 600 ℃ to ensure the subsequent refining temperature and reduce the temperature or composition mismatch caused by the adding alloys. The refining temperature range of ANS-OB process was 1 650 ℃-1 700 ℃, and its oxygen supply intensity gradually decreased from 0.8 m
3
/(t·min) to 0.4 m
3
/(t·min), while gradually increasing the argon supply intensity. Specifically, the flow ratio of O
2
to Ar was 1∶(0.86-2.16), and the main oxygen blowing time was 30 minutes-34 minutes, reducing the C content in the molten steel to below 0.08%. Then, ferrosilicon was used for reduction deoxidation, with a dosage of 10 kg/t and an Ar supply intensity of 0.5 m
3
/(t·min) maintained to reduce the O content in the molten steel to below 0.003 0%. Finally, add alloys such as ferrosilicon and manganese iron to adjust the composition of the molten steel. Smelting was carried out according to the established process plan, and good industrial test results were achieved.
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