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摘要：目前，二元以上的多元Ca系复合合金已被广泛用于许多钢种的脱氧。提高了钢的质量，改善了机械性能。理论和实践证明，多元复合合金的应用对降低钢中存在的形态，提高钢材质量起着不可替代的重要作用。本次研究的Al-Ca-Fe合金是一种新型复合脱氧剂。复合脱氧剂脱氧既能充分发挥强脱氧剂的脱氧作用，又能通过改变脱氧产物组成为夹杂物析出创造更有利的上浮条件，从而改善钢水流动性和提高钢水的纯净度。本文研究方案是根据成分比配制不同程度的Al-Ca-Fe合金。在一定温度和压力下，分别加入炉中反应进行熔合实验，然后将所得脱氧剂样品进行对比，并作性能分析和金相分析，从而来进一步研究Al-Ca-Fe合金的熔合情况和组织结构特征。结果得出Al-Ca-Fe合金组织结构复杂，合金表面杂质较多。41008
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毕业论文关键词：新型复合脱氧剂Al-Ca-Fe；夹杂物；纯净度；熔合实验
Experimental study on fusion of Al-Ca-Fe alloy
Abstract: At present, multiple CA composite alloy is more than two yuan has been widely used in many steel deoxidation.And improve the quality of steel, improve the mechanical properties.Theory and practice have proved that the application of multicomponent composite alloys has played an important role in reducing the existing form of steel and improving the quality of steel.The research of Al-Ca-Fe alloy is a new kind of compound agent.Composite deoxidizing agent can give full play to the strong deoxidizing agent for deoxidization, and by changing the composition of the deoxidation products create floating conditions more favourable to inclusion precipitation, so as to improve the flow of molten steel and improving steel purity.In this paper, the scheme is based on the composition ratio of different degrees of Al-Ca-Fe alloy.Under certain temperature and pressure were added reaction furnace in fusion experiments, then compares income deoxidizer samples, and performance analysis and metallographic analysis, so as to further study Al-Ca-Fe alloy of fusion situation and the features of organizational structure.The results show that the microstructure of Al-Ca-Fe alloy is complex, and the impurities on the alloy surface are more.
KeyWords：Composite alloy；Novel compound agent；inclusion；Purity ；Fusion experiment
目 录
1 绪论 1
1.1 铝铁合金 1
1.1.1 铝铁合金的研究进展 1
1.1.2 Fe含量对Al-Fe合金组织和硬度的影响 2
1.2 炼钢用脱氧剂 2
1.3 新型复合脱氧剂 4
1.3.1新型钙系复合脱氧剂的情况 4
1.3.2 新型铁钙脱氧剂性能研究 5
1.3.3 新型耐硫型脱氧剂 5
1.4 炼钢中常用的脱氧方法 6
1.4.1 沉淀脱氧法 6
1.4.2 炉渣脱氧法 6
1.4.3 真空脱氧法 6
1.4.4 综合脱氧法 7
1.5 非金属夹杂物 7
1.5.1 钢中非金属夹杂物的研究进展 7
1.5.2 钢中非金属夹杂物的金相 8
1.5.3钢中非金属夹杂物的危害 8
1.6 本文的研究背景和方案 8
1.6.1 研究背景 8
1.6.2 研究方案 9
2 实验部分 9
2.1 实验原料 9
2.2 实验设备 10
2.3 实验设计 11
2.3.1 实验原理 11
2.3.2 实验原料配比 11
2.3.3 实验步骤 12
3 结果与分析 12
3.1 Al-Ca-Fe合金熔合情况 13
3.2 Al-Ca-Fe合金熔合分析 17