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首页> 外文会议>Asia steel international conference >Experimental study on the influence of the Ti/Al ratio and different addition practices on the inclusion landscapein ULC steels
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Experimental study on the influence of the Ti/Al ratio and different addition practices on the inclusion landscapein ULC steels

机译：Ti / Al比例与不同加法实践对纳入景观素钢材影响的实验研究

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The continuous casting of Ti-alloyed ULC steels is often afflicted to alumina clogging.Different mechanisms and influencing parameters affecting this phenomenon are described in literature.Among them,one essential aspect is the Ti/Al ratio mainly controlling the size of alumina particles.Secondly,the time between Al and Ti addition is seen to be decisive for the final inclusion landscape.Within the present study,experiments on laboratory scale are carried out simulating the influence of different Ti/Al ratios as well as of various deoxidation and Ti-addition practices on size,chemical composition and morphology of non-metallic inclusions in ULC steels.Special attention is paid on multiphase inclusions.All experiments were carried out in a Tammann Furnace enabling very well controllable conditions.Next to the time between the Al and Ti addition also the duration time after Ti alloying was varied.Automated SEM/EDS analyses were used for inclusion characterization.The results are then compared to industrial observations.Furthermore,investigations using a high-temperature laser scanning confocal microscope allow the in-situ observation of the formation and modification of oxide inclusions through Ti-addition.Finally,based on the performed experiments the main aspects possibly influencing the clogging tendency of these steels are summarized and discussed.
机译：Ti合金化ULC钢的连续铸造常将对氧化铝堵塞困扰。在文献中描述了影响这种现象的不同机制和影响参数。该一致性方面是主要控制氧化铝粒子尺寸的Ti / Al比。 ，Al和Ti之间的时间被认为是对最终纳入景观的决定性。在本研究中，进行实验室规模的实验，模拟不同Ti / Al比以及各种脱氧和加法的影响ULC钢中非金属夹杂物的规模，化学成分和形态的实践。在多相夹杂物上支付了特殊关注。在Tammann炉中进行了实验，从而实现了非常良好的可控条件。添加到Al和Ti之间的时间还可以改变Ti合金化后的持续时间。普及化的SEM / EDS分析用于夹杂物表征。结果是COM削减了工业观察。使用高温激光扫描共聚焦显微镜的调查允许原位观察通过Ti-Adder的形成和改性氧化物夹杂物。基于所进行的实验，主要方面可能影响堵塞的主要方面这些钢的趋势总结和讨论过。

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