Formation and Evolution of Non-metallic Inclusions in Ti-Bearing Al-Killed Steel During Secondary Refining Process

2019 ◽  
Vol 51 (1) ◽  
pp. 173-186 ◽  
Author(s):  
Zhiyin Deng ◽  
Lei Chen ◽  
Guodong Song ◽  
Miaoyong Zhu
Keyword(s):  
Refining Process ◽  
Secondary Refining ◽  
Metallic Inclusions ◽  
Formation And Evolution

Effect of [Al]s, [Mg], [Ca] in Molten Steel on Inclusion Content for High Speed Wheel Steel during LF-VD Process

2014 ◽  
Vol 898 ◽  
pp. 60-63
Author(s):  
Yu Tang
Keyword(s):  
Fatigue Life ◽  
Molten Steel ◽  
High Speed ◽  
Refining Process ◽  
Fatigue Performance ◽  
Wheel Steel ◽  
Inclusion Content ◽  
High Basicity ◽  
Secondary Refining ◽  
Improve Fatigue

In order to improve fatigue life of wheel steel, LF-VD secondary-refining process is done with Al-deoxidation and slag of high basicity, high Al2O3 content and low oxidizing property. Inclusion content would be influenced by [Al]s, [Mg], [Ca] in molten steel. It is found that Al2O3 inclusions, which are the products of Al-deoxidation, would react with [Mg], [Ca] in molten steel to transform into CaO-MgO-Al2O3 complex inclusions, which is the key for the enhancement of fatigue performance for wheel steel.

Influence of Secondary Refining on the Non-Metallic Inclusions Rating during 26KhMFBA Steel Melting

2021 ◽  
Vol 51 (7) ◽  
pp. 475-479
Author(s):  
D. V. Rutskii ◽  
N. A. Zyuban ◽  
M. V. Kirilichev ◽  
M. S. Nikitin
Keyword(s):  
Steel Melting ◽  
Secondary Refining ◽  
Metallic Inclusions

Optimization of Pass Parameters on Two-Grooves Skew Rolling for Al Ball

2009 ◽  
Vol 419-420 ◽  
pp. 313-316 ◽  
Author(s):  
Xiao Min Shi ◽  
Bao Jian Wang ◽  
Zhen Hua Li
Keyword(s):  
Continuous Casting ◽  
Practical Experience ◽  
Refining Process ◽  
Steel Ball ◽  
Die Design ◽  
Secondary Refining ◽  
Skew Rolling

The optimization of pass parameters is an important step in skew rolling design. In order to meet the demands of secondary refining process in continuous casting, on the basis of the practical experience of two-groove skew rolling for steel ball, and by means of the theory of two-groove skew rolling design ,the optimization of two-groove pass parameter for Φ21.6 mm Aluminum ball, a kind of additive in secondary refining process, is realized. The optimized pass parameters are used in the rolling die design, and the corresponding experiments indicate that the projects of optimized pass parameters are feasible, and the efficiency of two-groove skew rolling is twice as large as that of one-groove.

scholarly journals Development of Secondary Refining Process. and Its Application to Production of Clean Steel

1986 ◽  
Vol 72 (9) ◽  
pp. 1309-1315 ◽  
Author(s):  
Yasutsugu OGURA ◽  
Yoshiteru KIKUCHI ◽  
Teruyuki HASEGAWA ◽  
Kazuhiko MATSUO ◽  
Kiyomi TAGUCHI ◽  
...  
Keyword(s):  
Refining Process ◽  
Clean Steel ◽  
Secondary Refining

Characterization of Non-Metallic Inclusions in API Steel Grades Using Automated Energy Dispersive X-Ray

2018 ◽  
Vol 916 ◽  
pp. 217-220
Author(s):  
Masoud Al-Gahtani ◽  
Sunilkumar Pillai ◽  
Ahmad Al-Raddadi
Keyword(s):  
Inclusion Composition ◽  
X Ray ◽  
Steel Making ◽  
Metallic Inclusions ◽  
Hydrogen Induced Cracking ◽  
Steel Processing ◽  
Steel Grades ◽  
Formation And Evolution ◽  
Scanning Electron

Non-metallic inclusions in API steel grades deteriorate steels’ mechanical properties and their resistance to hydrogen induced cracking. The formation and evolution of inclusion during liquid steel processing was investigated by analyzing samples taken from different stages of the steel making process in API X52 and X60 steel grades. Scanning electron microscope (SEM) with automated feature EDX analyzer (INCAF 250) was used to identify each inclusion in terms of its size, area and composition. It was found that non-metallic inclusions in API X52 and X60 grades from steelmaking and casting samples were mainly Al2O3, Ca–Al and Ca-Mg-Al. In this work changes in inclusion composition, size and area fraction from ladle processing to casting were mapped and this information was used to improve steel cleanness and product quality.

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