车轴钢EA1N的缺陷分析

doi:10.13228/j.boyuan.issn1005-4006.20200084

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Abstract This paper focuses on the quality of axle steel EA1N, and SEM-EDS was used to observe and perform energy spectrum analysis on defects. The study found that the main types of defects which mainly contain O, Al and other elements, while containing a small number of Ca and Ti, and Mg can be detected occasionally. From the energy spectrum analysis, it is known that the inclusion are the important cause of defects of axle steel EA1N. In the refining process, Al deoxidation forms a large amount of deoxidation products in the molten steel. Under the influence of refining slag and magnesium-containing refractory materials, the content of [Mg] and [Ca] in the molten steel increases, and Al₂O₃ transformed into composite inclusions containing multiple phases. The inclusion in the steel which can not be removed by floating can easily cause harm in the subsequent rolling and heat treatment process, and lead to defects such as cracks, which directly lead to the degradation of performance. The present study provides a basis for further exploring the correlation between inclusions and defects of axle steel EA1N.

Key words： axle steel mold casting inclusion surface defect crack morphology energy spectrum analysis

Received: 19 July 2020

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	Articles by authors
	LI Cheng-bin
	LIU Jun
	JIANG Peng

Cite this article:

LI Cheng-bin,LIU Jun,JIANG Peng. Defect analysis of for axle steel EA1N[J]. CONTINUOUS CASTING, 2020, 39(6): 57-61.

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http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20200084 OR http://www.chinamet.cn/Jweb_lz/EN/Y2020/V39/I6/57

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