Effect of Aluminium Injection into the Crystalizator on Type, Composition and Activity of Inclusions in Low Carbon Steel
This study was intended to investigate the effect of injection of aluminium into the crystallizator on type, composition and activity of inclusions in low carbon steel grade USD7. The steel is made in Zob-e-Ahan Isfahan factory and its porosities and inclusions results in the problem of rupturing du...
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| Format: | Article |
| Language: | fas |
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Isfahan University of Technology
2015-05-01
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| Series: | Journal of Advanced Materials in Engineering |
| Subjects: | |
| Online Access: | http://jame.iut.ac.ir/browse.php?a_code=A-10-1-650&slc_lang=en&sid=1 |
| _version_ | 1818932846345060352 |
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| author | H. Tavakoli M. Soltanieh H. Aghajani M. Jafarpour |
| author_facet | H. Tavakoli M. Soltanieh H. Aghajani M. Jafarpour |
| author_sort | H. Tavakoli |
| collection | DOAJ |
| description | This study was intended to investigate the effect of injection of aluminium into the crystallizator on type, composition and activity of inclusions in low carbon steel grade USD7. The steel is made in Zob-e-Ahan Isfahan factory and its porosities and inclusions results in the problem of rupturing during rolling process. To improve the quality of this steel, 2.4 mm diameter pure aluminum wires were injected in to the crystallizator at the rate of 2, 4, 6 or 8 m/min in certain periods and then sampling was done. The results indicated that much of the added aluminum changed to aluminum oxide slag, and the remaining part altered the chemical composition of the inclusions. Increased aluminum caused an increase in the activity of alumina and reduction in the activity of other oxides in the slag and existing inclusions in the melt. By increasing Al2O3 activity from 0.313 to 0.649, the Al2O3 formation and oxygen exclusion probability increased in the system. Scanning electron microscopy showed that without aluminium injection, most of inclusions were FeO-MnO type placed around existing porosities in the ingot. The optimum rate of aluminum injection was found to be 4 m/min. |
| first_indexed | 2024-12-20T04:38:58Z |
| format | Article |
| id | doaj.art-d7413b2a4a714129ac4d5e15f3bdee0c |
| institution | Directory Open Access Journal |
| issn | 1025-2851 2423-5733 |
| language | fas |
| last_indexed | 2024-12-20T04:38:58Z |
| publishDate | 2015-05-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Advanced Materials in Engineering |
| spelling | doaj.art-d7413b2a4a714129ac4d5e15f3bdee0c2022-12-21T19:53:10ZfasIsfahan University of TechnologyJournal of Advanced Materials in Engineering1025-28512423-57332015-05-01341923Effect of Aluminium Injection into the Crystalizator on Type, Composition and Activity of Inclusions in Low Carbon SteelH. Tavakoli0M. Soltanieh1H. Aghajani2M. Jafarpour3 This study was intended to investigate the effect of injection of aluminium into the crystallizator on type, composition and activity of inclusions in low carbon steel grade USD7. The steel is made in Zob-e-Ahan Isfahan factory and its porosities and inclusions results in the problem of rupturing during rolling process. To improve the quality of this steel, 2.4 mm diameter pure aluminum wires were injected in to the crystallizator at the rate of 2, 4, 6 or 8 m/min in certain periods and then sampling was done. The results indicated that much of the added aluminum changed to aluminum oxide slag, and the remaining part altered the chemical composition of the inclusions. Increased aluminum caused an increase in the activity of alumina and reduction in the activity of other oxides in the slag and existing inclusions in the melt. By increasing Al2O3 activity from 0.313 to 0.649, the Al2O3 formation and oxygen exclusion probability increased in the system. Scanning electron microscopy showed that without aluminium injection, most of inclusions were FeO-MnO type placed around existing porosities in the ingot. The optimum rate of aluminum injection was found to be 4 m/min.http://jame.iut.ac.ir/browse.php?a_code=A-10-1-650&slc_lang=en&sid=1USD7 steel Deoxidation Aluminum injection Crystallizator Inclusions Porosity |
| spellingShingle | H. Tavakoli M. Soltanieh H. Aghajani M. Jafarpour Effect of Aluminium Injection into the Crystalizator on Type, Composition and Activity of Inclusions in Low Carbon Steel Journal of Advanced Materials in Engineering USD7 steel Deoxidation Aluminum injection Crystallizator Inclusions Porosity |
| title | Effect of Aluminium Injection into the Crystalizator on Type, Composition and Activity of Inclusions in Low Carbon Steel |
| title_full | Effect of Aluminium Injection into the Crystalizator on Type, Composition and Activity of Inclusions in Low Carbon Steel |
| title_fullStr | Effect of Aluminium Injection into the Crystalizator on Type, Composition and Activity of Inclusions in Low Carbon Steel |
| title_full_unstemmed | Effect of Aluminium Injection into the Crystalizator on Type, Composition and Activity of Inclusions in Low Carbon Steel |
| title_short | Effect of Aluminium Injection into the Crystalizator on Type, Composition and Activity of Inclusions in Low Carbon Steel |
| title_sort | effect of aluminium injection into the crystalizator on type composition and activity of inclusions in low carbon steel |
| topic | USD7 steel Deoxidation Aluminum injection Crystallizator Inclusions Porosity |
| url | http://jame.iut.ac.ir/browse.php?a_code=A-10-1-650&slc_lang=en&sid=1 |
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