Kinetic Analysis of Alumina Change in Mold Slag for High Aluminum Steel during Continuous Casting

2011 ◽  
Vol 43 (2) ◽  
pp. 424-430 ◽  
Author(s):  
Qiang Wang ◽  
Shengtao Qiu ◽  
Pei Zhao
Keyword(s):  
Continuous Casting ◽  
Kinetic Analysis ◽  
Mold Slag ◽  
High Aluminum Steel ◽  
High Aluminum

Study on the Mold Slag with High Al2O3Content for High Aluminum Steel

PRICM ◽  
2013 ◽  
pp. 2231-2239
Author(s):  
Qiang Wang ◽  
Shengtao Qiu ◽  
Zhiling Tian ◽  
Guoling Zhu ◽  
Pei Zhao
Keyword(s):  
Mold Slag ◽  
High Aluminum Steel ◽  
High Aluminum

scholarly journals The Spontaneous Emulsification of Entrained Inclusions During Casting of High Aluminum Steels

2021 ◽  
Author(s):  
Akalya Raviraj ◽  
Nadia Kourra ◽  
Mark A. Williams ◽  
Gert Abbel ◽  
Claire Davis ◽  
...  
Keyword(s):  
Continuous Casting ◽  
Slag Phase ◽  
Continuous Caster ◽  
Casting Process ◽  
Inclusion Size ◽  
Confocal Scanning Laser Microscopy ◽  
Continuous Casting Mold ◽  
Spontaneous Emulsification ◽  
Mold Slag ◽  
High Aluminum

AbstractMold slag entrainment during the continuous casting process presents a late stage source of non-metallic inclusions (NMI) with a high likelihood of ending up in the final product. The reaction between the entrained slag phase and surrounding liquid steel in the continuous casting mold affects the inclusion morphology and properties. However, there is a lack of information on the kinetics of the NMI-steel reaction. A novel approach, utilizing controlled synthetic inclusion/metal samples, has been developed to study the reactions between free inclusion-slag droplets and steel. The technique combines High-Temperature Confocal Scanning Laser Microscopy (HT-CSLM), X-ray Computed Tomography (XCT) and advanced electron microscopy techniques offering rapid controlled heating performance and extensive characterization of the samples. This method offers the ability to observe the size, shape and composition of an unconstrained reacting inclusion and to investigate the interface between the materials with respect to reaction time. This study interrogates a low aluminum steel (0.04 wt pct) and a high aluminum steel (1 wt pct) in contact with an inclusion-slag phase with a starting composition aligned to a typical mold slag. It was found that the reaction between silica and aluminum across the interface of the two phases provided a driving force for spontaneous emulsification to occur. Products of such emulsification will have a significant effect on the inclusion size distribution and potentially the prevalence of inclusion retention in molten steels solidifying in the continuous caster (for example if emulsified buoyancy forces are reduced to near zero) and hence in the subsequent solid product.

Evaluation of Mold Flux for Continuous Casting of High-Aluminum Steel

2016 ◽  
pp. 279-289 ◽  
Author(s):  
Wei Yan ◽  
Wei Yan ◽  
Alexander McLean ◽  
Yindong Yang ◽  
Weiqing Chen ◽  
...  
Keyword(s):  
Continuous Casting ◽  
Mold Flux ◽  
High Aluminum Steel ◽  
High Aluminum

Study on Mold Slag with High Al2O3 Content for High Aluminum Steel

2013 ◽  
Vol 45 (2) ◽  
pp. 540-546 ◽  
Author(s):  
Qiang Wang ◽  
Min Sun ◽  
Shengtao Qiu ◽  
Zhiling Tian ◽  
Guoling Zhu ◽  
...  
Keyword(s):  
Al2o3 Content ◽  
Mold Slag ◽  
High Aluminum Steel ◽  
High Aluminum

The Slagging Model Research of Refining-Slag for High Aluminum Steel

2012 ◽  
Vol 602-604 ◽  
pp. 90-95
Author(s):  
Min Zhang ◽  
Jian Hua Zeng ◽  
Xing Di Yang ◽  
Yao Xian Zeng
Keyword(s):  
Prediction Model ◽  
Reduction Reaction ◽  
Refining Slag ◽  
Activity Prediction ◽  
Slag Refining ◽  
Coexistence Theory ◽  
Model Research ◽  
High Aluminum Steel ◽  
Si Content ◽  
High Aluminum

To accurately control the Si content and ensure the function of slag refining in high aluminum steel, the direction and limits of reduction reaction for SiO2 were analyzed based on the thermodynamics. In addition, the thermodynamic prediction model of multi-element slag was studied. Then, a slag activity prediction model was established based on the coexistence theory. Using the model, the suitable ladle slag composition for high aluminum steel was calculated.

Review of non-reactive CaO–Al2O3-based mold fluxes for casting high-aluminum steel

2019 ◽  
Vol 26 (4) ◽  
pp. 336-344 ◽  
Author(s):  
Lei Zhang ◽  
Wan-lin Wang ◽  
Han-qing Shao
Keyword(s):  
Mold Fluxes ◽  
High Aluminum Steel ◽  
High Aluminum

Effects of the cooling rate on the crystallization behaviors of the CaO–Al2O3–B2O3–CaF2-based mold flux

CrystEngComm ◽  
2020 ◽  
Vol 22 (12) ◽  
pp. 2158-2165
Author(s):  
Jiangling Li ◽  
Feifei Lai ◽  
Wen Yao ◽  
Liwen Hu ◽  
Qingcai Liu
Keyword(s):  
High Temperature ◽  
Cooling Rate ◽  
Steel Casting ◽  
Mold Flux ◽  
Tube Furnace ◽  
Crystallization Behaviors ◽  
High Aluminum Steel ◽  
New Type ◽  
High Aluminum

The effects of the cooling rate on a new type CaO–Al2O3–B2O3–CaF2-based mold flux for high aluminum steel casting were investigated using CSLM and a high temperature tube furnace.

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