采用全流程系统取样的方式,对120 t BOF-LF-VD-CC工艺生产20CrMnTi齿轮钢中氧含量和夹杂物特性的演变规律进行系统的分析和研究。实验结果表明,采用铝脱氧和高碱度[(CaO)/(SiO_2)=3.8~7]还原渣工艺,能使铸坯中T[O]低于20×10^(-6);...采用全流程系统取样的方式,对120 t BOF-LF-VD-CC工艺生产20CrMnTi齿轮钢中氧含量和夹杂物特性的演变规律进行系统的分析和研究。实验结果表明,采用铝脱氧和高碱度[(CaO)/(SiO_2)=3.8~7]还原渣工艺,能使铸坯中T[O]低于20×10^(-6);中间包钢水中平均T[O]增加6×10^(-6);齿轮钢冶炼过程中,夹杂物完成了Al_2O_3→Al_2O_3-MgO→Al_2O_3-CaO-MgO的转变。展开更多
High resolution H NMR, was applied to investigation of the relationship between cellmetabolism and the content of oxygen using a model sample contaming yeast and blood. Sigjnalsfrom the metabolism have been observed, ...High resolution H NMR, was applied to investigation of the relationship between cellmetabolism and the content of oxygen using a model sample contaming yeast and blood. Sigjnalsfrom the metabolism have been observed, and the dependence of metabolism on oxygen level hasbeen discussed.展开更多
文摘采用全流程系统取样的方式,对120 t BOF-LF-VD-CC工艺生产20CrMnTi齿轮钢中氧含量和夹杂物特性的演变规律进行系统的分析和研究。实验结果表明,采用铝脱氧和高碱度[(CaO)/(SiO_2)=3.8~7]还原渣工艺,能使铸坯中T[O]低于20×10^(-6);中间包钢水中平均T[O]增加6×10^(-6);齿轮钢冶炼过程中,夹杂物完成了Al_2O_3→Al_2O_3-MgO→Al_2O_3-CaO-MgO的转变。
文摘High resolution H NMR, was applied to investigation of the relationship between cellmetabolism and the content of oxygen using a model sample contaming yeast and blood. Sigjnalsfrom the metabolism have been observed, and the dependence of metabolism on oxygen level hasbeen discussed.
