Control of as-cast microstructure morphology of high silicon electrical steels produced through a horizontal belt casting process simulator
Control of as-cast microstructure morphology of high silicon electrical steels produced through a horizontal belt casting process simulator
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DOI：
10.1080/03019233.2020.1758995
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发表时间：
2020-05
影响因子：
2.1
通讯作者：
C. Slater;M. Ji;Bharath Bandi;C. Davis
中科院分区：
文献类型：
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作者：
C. Slater;M. Ji;Bharath Bandi;C. Davis
全球电气化的增加正在推动性能改进的新型电工钢的发展，例如适用于高频电机的Fe-6Si。Fe-6Si钢很难铸造和轧制，因此目前唯一的商业生产是通过下游硅化来增加Si含量。探讨了用带式铸造模拟机铸造超高硅电工钢的可行性，以及铸造工艺参数对组织的影响。研究了过温、带型、带层和铸件厚度的变化，结果表明，可以产生从具有高度有利{100}织构的大柱状晶粒到精细的等轴随机织构晶粒的显微组织。它还表明，铸造到大约3.5毫米的厚度可以实现，这样就需要最小的变形来生产最终产品（大约0.1毫米厚），这将减少在轧制过程中开裂的可能性。
Increase in global electrification is driving the development of new electrical steels with improved performance, such as Fe–6Si suitable for high-frequency e-machines. Fe–6Si steel is difficult to cast and roll such that currently, the only commercial production is via downstream siliconisation to increase Si content. This paper explores the feasibility of casting ultra-high silicon electrical steels through a belt cast simulator and how the microstructure depends on casting parameters. Changes in the superheat, belt profile, belt coating and cast thickness have been considered and shows that microstructures from large columnar grains with a highly favourable {100} texture, to fine equiaxed random texture grains can be produced. It is also shown that casting to thicknesses of around 3.5 mm can be achieved such that a minimal amount of deformation is needed to produce the final product (around 0.1 mm thick), which will reduce the likelihood of cracking during rolling.