IMPROVING PRODUCTION TECHNOLOGY OF TUBE STEEL GRADES IN CONVERTER PROCESS

被引：0

作者：

Kovalev, P. V. ^{[1
,2
,3
]}

Ryaboshuk, S. V. ^{[1
,2
,3
]}

Issagulov, A. Z. ^{[1
,2
,3
]}

Kulikov, V. Yu. ^{[1
,2
,3
]}

Kvon, Sv. S. ^{[1
,2
,3
]}

Chsherbakova, Y. P. ^{[1
,2
,3
]}

Sultamurat, G. I. ^{[1
,2
,3
]}

Jironkin, M. V. ^{[1
,2
,3
]}

机构：

[1] St Petersburg State Polytech Univ, St Petersburg, Russia

[2] Karaganda State Tech Univ, Karaganda, Kazakhstan

[3] OAO Severstal, St Petersburg, Russia

来源：

METALURGIJA | 2016年 / 55卷 / 04期

关键词：

nonmetallic inclusions; tube steel; deoxidation; modification; strip;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Nature of formation and evolution special features of nonmetallic inclusions during ladle refining of converter HSLA steels for pipelines have been studied. Nonmetallic inclusions of the CaO-Al2O3-MgO system, close to calcium monoaluminate CaO center dot Al2O3 with up to 5-6% of MgO, have been found as favorable from morphology point of view. These small inclusions nucleate on endogenous MgO substrates at sufficient high content of calcium in steel melt. Hot rolled plates can be rejected due to the coarse calcium bi- and hexa-aluminate inclusions (CaO center dot 2Al(2)O(3) and CaO center dot 6Al(2)O(3)), usually containing exogenous MgO. These coarse inclusions form under calcium deficiency conditions, especially in the case of longtime steel holding in a ladle.

引用

页码：715 / 718

页数：4

共 5 条

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