WANG Yu-nan
,
BAO Yan-ping
,
CUI Heng
,
CHEN Bin
,
JI Chen-xi
钢铁研究学报(英文版)
In order to precisely control the final temperature of molten steel in RH (Ruhrstahl Heraeus)-TOP blowing refining, the final temperature prediction models of molten steel in RH-TOP blowing refining process for Interstitial Free (IF) steel production were established under the condition of oxygen blowing and non-oxygen blowing respectively. The results show that the beginning molten steel temperature of refining and the amount of added scrap were influential factors, the baking temperature in vacuum chamber was a factor that had small influence. When the model was operated, the hitting probability was above 95% (under the condition of both oxygen blowing and non-oxygen blowing) of prediction deviation of ±10 ℃. The accuracy is analyzed.
关键词:
RH-TOP
,
molten steel temperature
,
prediction model
郭少强
,
朱海山
,
柳歆
,
路民旭
,
许立宁
,
覃慧敏
腐蚀与防护
为预测油气输送管线顶部CO2腐蚀风险,建立了数理模型来预测CO2顶部腐蚀速率.考虑管道顶部CO2腐蚀现象主要包含液滴冷凝过程、液滴内液相化学变化和CO2腐蚀三个主要过程,模型主要分为冷凝率预测,液滴液相化学成分计算和De Waard CO2腐蚀模型三部分.然后利用铁的质量守恒关系将这三部分进行关联,来计算最终顶部腐蚀速率预测值.利用高温高压冷凝反应釜和湿气环路试验结果对模型预测结果进行了验证.
关键词:
碳钢
,
CO2腐蚀
,
管线顶部腐蚀
,
预测模型
