共查询到18条相似文献,搜索用时 93 毫秒
1.
2.
3.
4.
5.
6.
7.
钢液脱氮用BaO—TiO2基合成渣 总被引:4,自引:0,他引:4
以TiO2高炉渣为基料配制的合成渣对钢液脱氮的效果进行了实验室试验研究,结果表明:在Ar气保护下,对低碳铝脱氧钢液脱氮,其脱氮率达60%以上,最低[N]含量约10×10-6。 相似文献
8.
调查了超高功率交流竖式电炉与普通超高功率交流电炉钢液氮含量的差别,并从配料结构、电极穿井模式、冶炼工艺等因素进行了影响分析. 相似文献
9.
10.
采用高纯氦气做载气,脉冲炉熔化试样,红外吸收检测氧、热导法检测氮的仪器分析方法,测定40Mn2钢中氧氮含量.对仪器的各项分析参数进行了选择和优化,确定了最合适的实验条件,与标准样品对比表明该分析结果准确可靠. 相似文献
11.
12.
13.
氧含量影响钢液吸氮的理论研究 总被引:6,自引:0,他引:6
应用表面结构模式,得出表面活性元素氧在钢液表面富集,降低钢液吸氮速度;其表面层除了有O、Fe原子外,还有FeO分子存在。在此研究基础上,提出了脱氧合金化及钢包精炼工艺,以减少钢液吸氮。 相似文献
14.
15.
16.
使用Al2O3坩埚在真空感应炉内测定了1600℃时氮在含C还原渣和钢液之间的总传质系数βo.研究表明,βo与气相中氮分压PN2的大小有关,随着PN2的增加βo增大.由物料平衡计算得出,在本实验条件下,βo为3.7×10-4 cm/S. 相似文献
17.
Zhouhua Jiang Huabing Li Zhaoping Chen Zongze Huang Deling Zou Lianke Liang 《国际钢铁研究》2005,76(10):740-745
Nitrogen solubility in the austenitic stainless steel melts was measured in the laboratory by bubbling nitrogen gas under different partial pressures of nitrogen and temperatures. A new thermodynamic model for the calculation of nitrogen solubility in molten stainless steel in a wide range of alloy concentrations, temperatures, and pressures has been successfully established by introducing a new term for the effect of pressure on the nitrogen activity coefficient. The calculation results were in good agreement with the measured values. The influences of temperature, nitrogen partial pressure and chemical composition on the nitrogen solubility in molten stainless steel are discussed based on the calculated results. It is possible to produce high nitrogen steels at normal pressure by optimizing the design of the alloy composition and controlling the lowest melting temperature from a thermodynamic point of view. 相似文献