Interfacial Reaction Between Ultra Low C Steel and Gas Generated from Refractory Material Used for Submerged Entry Nozzle for Continuous Casting

2017 ◽  
Vol 163 (1) ◽  
pp. 18-22 ◽  
Author(s):  
Joo-Hyeok Lee ◽  
Sung-Kwang Kim ◽  
Myeong-Hun Kang ◽  
Youn-Bae Kang
Keyword(s):  
Continuous Casting ◽  
Refractory Material ◽  
Interfacial Reaction ◽  
Submerged Entry Nozzle

scholarly journals Influence of the Submerged Entry Nozzle’s Bottom Well on the Characteristics of Its Exit Jets

Metals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 398
Author(s):  
Jesus Gonzalez-Trejo ◽  
Cesar A. Real-Ramirez ◽  
Jose Raul Miranda-Tello ◽  
Ruslan Gabbasov ◽  
Ignacio Carvajal-Mariscal ◽  
...  
Keyword(s):  
Continuous Casting ◽  
Liquid Steel ◽  
Mold Wall ◽  
Casting Machine ◽  
Submerged Entry Nozzle ◽  
Central Plane ◽  
Impact Point ◽  
Single Vortex ◽  
Hydrodynamic Analysis ◽  
Principal Characteristics

In vertical continuous casting machines the liquid steel from the tundish is poured into the mold through the Submerged Entry Nozzle (SEN). The shape and direction of the SEN exit jets affect the liquid steel dynamics inside the mold. This work quantifies the effect of the SEN pool on the principal characteristics of the jets emerging from it, precisely, the shape, the spread angles, and the mold impact point. Experimental and numerical simulations were carried out using a SEN simplified model, a square-shaped bore nozzle with square-shaped outlet ports whose length is minimal. These experiments showed two well-defined behaviors. When a single vortex dominates the hydrodynamics inside the simplified SEN, the exit jets spread out and are misaligned about the mold’s central plane. On the contrary, when the inner flow pattern shows two vortexes, the exit jets are compact and parallel to the mold wide walls. The measured difference on the jet’s falling angles is 5°, approximately, which implies that in an actual casting machine, the impingement point at the narrow mold wall would have a variation of 0.150 m. This hydrodynamic analysis would help design new SENs for continuous casting machines that improve steel quality.

Influence of the configuration of the submerged entry nozzle inner channel and electromagnetic effect within its length on the qualitative distribution of metal flows during continuous casting of steel

2021 ◽  
pp. 17-22
Author(s):  
A. Yu. Tretyak ◽  
◽  
Qiang Wang ◽  
Chun-Lei Wu ◽  
E. I. Shifrin ◽  
...  
Keyword(s):  
Quality Control ◽  
Continuous Casting ◽  
Submerged Entry Nozzle ◽  
Electromagnetic Stirring ◽  
Continuous Casting Of Steel ◽  
Electromagnetic Effect ◽  
Inner Surface ◽  
Continuously Cast ◽  
Inner Channel ◽  
Research Show

Today, the most promising and effective method of quality control of the continuously cast billets is electromagnetic stirring of the melt. In this case, an important component is the effect of the stirring on the jet in the nozzle. Moreover, as research has shown, this method is highly dependent on the configuration of the inner channel of the nozzle. Research have shown that positive or negative taper of the inner surface of the nozzle allows to obtain different results after applying EMS. Taper control completely changes the pattern of the melt flow and its deceleration in the mold, especially when it is casting of large billets. The results of the research show that minor changes in the taper of the nozzle significantly increase the effect of EMS implementation, which is observed already at 0.27 % of positive the taper and increases to 0.54%.

scholarly journals Prevention of Adhesion of Alumina Inclusions onto Submerged Entry Nozzle by Refractory Material Containing MgO and Al

2012 ◽  
Vol 98 (1) ◽  
pp. 10-18 ◽  
Author(s):  
Yutaka Awajiya ◽  
Mikio Suzuki ◽  
Keiji Watanabe ◽  
Koichi Tsutsumi ◽  
Yasuo Kishimoto ◽  
...  
Keyword(s):  
Refractory Material ◽  
Submerged Entry Nozzle

scholarly journals Impact of addition of ca on clogging of SEN and magnetic properties of non-oriented silicon steel

2019 ◽  
Vol 55 (1) ◽  
pp. 39-46
Author(s):  
W. Kong ◽  
D.G. Cang
Keyword(s):  
Magnetic Properties ◽  
Continuous Casting ◽  
Casting Speed ◽  
Magnetic Induction ◽  
Core Loss ◽  
Submerged Entry Nozzle ◽  
Silicon Steel ◽  
The Core ◽  
Dissolved Aluminum ◽  
The Impact

The submerged entry nozzle (SEN) clogging has been happening during continuous casting (or CC for short) for nonoriented silicon steel. To solve the problem, the paper studied a flow rate through SEN, a node attached to one of them, and the impact on the clogging. The results showed that when SEN is clogged seriously, the casting speed has to decrease below the target casting speed and that SEN clogging can be predicted by comparing the actual value and the theoretical one of a casting speed. Al2O3 and its composite inclusions caused the SEN clogging and the addition of Ca can solve SEN clogging during CC of the silicon steel both theoretically and practically. Furthermore, the impact of the addition of Ca on the magnetic properties of the steel were analyzed. The results showed that the core loss and the magnetic induction of the silicon steel decreased by using the addition of Ca, which generated more dissolved Aluminum, and the addition of Ca generated more harmful textures, which reduced the magnetic induction.

scholarly journals Fluid Flow Behavior in Submerged Entry Nozzle of Continuous Casting

2007 ◽  
Vol 47 (6) ◽  
pp. 840-846 ◽  
Author(s):  
Toru Kato ◽  
Masashi Hara ◽  
Akifumi Muto ◽  
Sei Hiraki ◽  
Masayuki Kawamoto
Keyword(s):  
Fluid Flow ◽  
Continuous Casting ◽  
Flow Behavior ◽  
Submerged Entry Nozzle

scholarly journals Effects of Electromagnetic Swirling Flow in Submerged Entry Nozzle on Square Billet Continuous Casting of Steel Process

2013 ◽  
Vol 53 (7) ◽  
pp. 1187-1194 ◽  
Author(s):  
Dewei Li ◽  
Zhijian Su ◽  
Jin Chen ◽  
Qiang Wang ◽  
Ying Yang ◽  
...  
Keyword(s):  
Continuous Casting ◽  
Swirling Flow ◽  
Submerged Entry Nozzle ◽  
Continuous Casting Of Steel ◽  
Billet Continuous Casting
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