2250mm热连轧典型钢种高温氧化行为研究

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基金项目:

河北省重大科技成果转化专项（项目编号：18041033Z）。

Study on High Temperature Oxidation Behavior of Typical Steel during 2250mm Hot Continuous Rolling

1. Technology Center, Handan Company, Hesteel Group, Handan 056015, Hebei, China;
2. Hanbao Cold Rolling Mill, Handan Company, Hesteel Group, Handan 056015, Hebei, China;
3. Technology Research Institute, Hesteel Group, Shijiazhuang 050023, Hebei, China

摘要: 通过氧化动力学试验研究了2 250 mm热连轧典型钢种低合金高强钢QStE500TM和压力容器钢Q345R的高温氧化行为。结果显示：氧化铁皮的生长遵守抛物线规律，QStE500TM钢的氧化激活能为161.766 kJ/mol，Q345R的氧化激活能为179.179 kJ/mol；氧化铁皮呈现典型三层氧化铁皮结构，700~800℃时，氧化速率很慢，氧化铁皮较薄；大于900℃时，氧化速率急剧增大，氧化铁皮厚度急剧增加。
- 热连轧 /
- QStE500TM /
- Q345R /
- 氧化动力学 /
- 氧化激活能 /
- 氧化铁皮
Abstract: The oxidation behavior of typical low alloy high strength steel QStE500 TM and pressure vessel steel Q345 R during 2 250 mm hot continuous rolling was studied by oxidation kinetics experiment.The results show that the growth of iron oxide scale complies with the parabola law.The oxidation activation energy of QStE500 TM steel is 161.766 kJ/mol,and the oxidation activation energy of Q345 R is 179.179 kJ/mol.The iron oxide scale shows a typical three-layer iron oxide scale structure.When the oxidation temperature is in the range of 700～800 ℃,the oxidation rate is very slow and the iron oxide scale is thin.When the temperature is higher than 900 ℃,the oxidation rate and the thickness of iron oxide scale increase sharply.
- hot continuous rolling /
- QStE500TM /
- Q345R /
- oxidation kinetics /
- oxidation activation energy /
- iron oxide scale