齿轮钢大圆坯的铸态组织及轧制遗传性

doi:10.13228/j.boyuan.issn1005-4006.20200023

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Abstract Based on the production process of 22CrMoH automobile gear steel by continuous casting and continuous rolling of 500 mm large round billet, through the analysis of low-magnification structure, high-magnification metallurgical structure and strip structure of rolled billet, the as-cast microstructure and rolling of gear steel large round billet were carried out. It was found that the dendritic size of the 22CrMoH gear steel continuous casting large round billet were significantly different in the near surface fine grain region, the columnar crystal region and the central equiaxed crystal region. The secondary dendrite spacing from the surface to the core gradually increases, and ferrite dominated the main dendritic trunk and pearlite dominated the dendrite. After rolling, the banded structure is mainly affected by the secondary dendrite spacing and rolling deformation of the as-cast microstructure, and the bandwidth of annealed ferrite increased from surface to core after rolling

Key words： gear steel cast macrostructure genetics anneal continuous casting

Received: 29 March 2020

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	Articles by authors
	SHI Ke-wei
	ZHANG Hong-cai
	ZHENG Li-ning
	LEI Ming
	ZUO Hui

Cite this article:

SHI Ke-wei,ZHANG Hong-cai,ZHENG Li-ning等. Cast macrostructure and rolling genetics of gear steel round bloom[J]. CONTINUOUS CASTING, 2020, 39(4): 66-69.

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http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20200023 OR http://www.chinamet.cn/Jweb_lz/EN/Y2020/V39/I4/66

[1]	许庆太,杨撷光,吴春雷,等.连铸坯内部裂纹缺陷的检验和分析[J].连铸,2015,40(5):1.
[2]	张剑君,毛新平,王春峰,等.薄板坯连铸连轧炼钢高效生产技术进步与展望[J].钢铁,2019,54(5):1.
[3]	康永林,田鹏,朱国明.热宽带钢无头轧制技术进展及趋势[J].钢铁,2019,54(3):1.
[4]	郑伟栋,唐志军,郝强,等.铸坯酸蚀检验法在板坯生产中的应用[J].连铸,2011,36(2):44.
[5]	王秀芳.浅谈GB/T 226《钢的低倍组织及缺陷酸蚀检验法》新旧版本的差异[J].理化检验:物理分册,2015,51(3):188.
[6]	崔忠圻,覃耀春.金属学与热处理[M].北京:机械工业出版社,2011:6.
[7]	杜辰伟,兰鹏,汪春雷,等.微合金钢连铸坯表面裂纹敏感性预测模型[J].中国冶金,2019,29(7):23.
[8]	张雪梅,汪洪峰,程乃良.钢的包晶反应与铸坯裂纹敏感性的研究[J].连铸,2018,43(3):47.
[9]	董艳伍.电渣重熔过程凝固数学模拟及新渣系研究[D].沈阳:东北大学,2008.
[10]	胡汉起.金属凝固原理[M].北京:机械工业出版社,2007:1.