Quality control for bloom casting of YQ450NQR1 steel

IMR OpenIR

	Quality control for bloom casting of YQ450NQR1 steel
其他题名	Quality control for bloom casting of YQ450NQR1 steel
	Chen Yong 1; Wu Guorong 2; Zhu Miaoyong 1
	2009
发表期刊	INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
ISSN	1674-4799
卷号	16 期号:1 页码:32-36
摘要	To reduce surface depression of a bloom, the primary cooling intensity was decreased, and the water distribution of mold wide and narrow faces was optimized. The length of secondary cooling zones and the specific water flow were increased, and the water flow distribution among the secondary cooling zones was adjusted to eliminate central defects, such as center looseness, central segregation, and center line cracks. The operation showed that the proportion of surface depression decreased from 37.22% to 2.87%, whereas the proportion of center looseness for <= 1.0 increased from 79.71% to 90.70%, the proportion of central segregation for <0.5 increased from 1.45% to 44.19%, and the proportion of center line cracks that are free increased from 39.13% to 62.79%. The qualified blooms are delivered to produce 3 10 Z-beam, whose yield strength is greater than 450 MPa.
其他摘要	To reduce surface depression of a bloom,the primary cooling intensity was decreased,and the water distribution of mold wide and narrow faces was optimized.The length of secondary cooling zones and the specific water flow were increased,and the water flow distribution among the secondary cooling zones was adjusted to eliminate central defects,such as center looseness,central segregation,and center line cracks.The operation showed that the proportion of surface depression decreased from 37.22% to 2.87%,whereas the proportion of center looseness for ≤ 1.0 increased from 79.71% to 90.70%,the proportion of central segregation for <0.5 increased from 1.45% to 44.19%,and the proportion of center line cracks that are free increased from 39.13% to 62.79%.The quali-fied blooms are delivered to produce 310 Z-beam,whose yield strength is greater than 450 MPa.
关键词	HOT-DUCTILITY TRANSVERSE CRACKING corrosion resistant steel atmospheric corrosion bloom casting primary cooling secondary cooling quality control
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:3558679
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/155546
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.Panzhihua Iron & Steel Res Institute, Dept Mat Res, Panzhihua 617000, Peoples R China
推荐引用方式 GB/T 7714	Chen Yong,Wu Guorong,Zhu Miaoyong. Quality control for bloom casting of YQ450NQR1 steel[J]. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,2009,16(1):32-36.
APA	Chen Yong,Wu Guorong,&Zhu Miaoyong.(2009).Quality control for bloom casting of YQ450NQR1 steel.INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,16(1),32-36.
MLA	Chen Yong,et al."Quality control for bloom casting of YQ450NQR1 steel".INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS 16.1(2009):32-36.