| Quality control for bloom casting of YQ450NQR1 steel | |
| Alternative Title | Quality control for bloom casting of YQ450NQR1 steel |
| Chen Yong1; Wu Guorong2; Zhu Miaoyong1 | |
| 2009 | |
| Source Publication | INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
 |
| ISSN | 1674-4799 |
| Volume | 16Issue:1Pages:32-36 |
| Abstract | 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. |
| Other Abstract | 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. |
| Keyword | HOT-DUCTILITY TRANSVERSE CRACKING corrosion resistant steel atmospheric corrosion bloom casting primary cooling secondary cooling quality control |
| Indexed By | CSCD |
| Language | 英语 |
| CSCD ID | CSCD:3558679 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/155546 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 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 |
| Recommended Citation 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. |
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