摘要:汽车轻量化是目前汽车工业重点研究的方向之一,主要目的是获得优良综合性能的高强钢而减少钢铁用量。在此,高锰钢应运而生,它具有良好的性能,不过能否工业化冶炼生产尚处于研究阶段。其试验的基础是“去碳保锰”的热力学原理。其中核心是钢液组分的活度、活度系数的变化参数。但迄今为止,还没有具体的相关资料进行阐述。因此,进行冶炼过程中各组分的活度以及活度系数的研究是相当有必要的。本课题主要研究的是(MnO)对渣中(FeO)活度影响,实验得出的结论:(FeO)的活度系数的对数随着(MnO)的摩尔分数的增加基本上是随之增大。它们之间的回归公式: 。61928
Study on the effect of MnO on the activity of FeO in slag
Abstract:Automotive lightweighting is currently one of the important research direction of the automotive industry. Main purpose is to obtain high strength steel and good comprehensive performance of reducing steel consumption.At this point,High manganese steel, it has good performance,However,Whether industrial smelting production was still in the stage of research.Its experiment is the basis of thermodynamic principle of "Remove carbon and retain manganese". Of which the core is the change of the liquid steel components of activity and activity coefficient parameters.But so far, there has been no specific information.Therefore, carries on the activity and activity coefficient of each composition in smelting of research is quite necessary.This topic mainly studies the (MnO) impact the (FeO) activity of slag,The experimental conclusion:(FeO) activity coefficient of logarithm with the increase of molar fraction of MnO is basically increase. The formula
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Key Words:High manganese steel;Activity coefficient;Chemical equilibrium method
目 录
1 绪论 1
1.1 汽车用钢简介 1
1.2 汽车用钢的发展 2
1.2.1 DP钢 2
1.2.2 TRIP钢 2
1.2.3 TWIP钢 3
1.3 TWIP钢的冶炼 4
1.3.1 炉渣 4
1.3.2 碱度 6
1.3.3 真空炉(VOD)冶炼 7
1.3.4 氩氧炉(AOD)冶炼 7
1.3.5 AOD与VOD比较 9
1.4 FeO的活度研究 9
1.4.1 活度的概念 9
1.4.2 FeO活度测定方法 10
2 实验部分 13
2.1 实验设备 13
2.1.1 原料试剂 14
2.1.2 实验室注意事项 14
2.2 实验原理 14
2.2.1 金属Ag熔体中Mn的活度系数 15
2.2.2 渣中MnO的活度系数 16
2.2.3 渣中FeO的活度系数 16
2.3实验过程 17
2.3.1 平衡时间的确定 17
2.3.2 渣中组分活度系数和活度测定 17
3 结果与分析 19
3.1 实验数据 19