Use of Rotary Continuous Cast Steel for Production of Tubes for Bearing Applications

2009 ◽  
pp. 293-293-15 ◽  
Author(s):  
G Baudry ◽  
G Duplomb ◽  
G Giroud ◽  
J Saleil ◽  
G Jacob
Keyword(s):  
Cast Steel ◽  
Continuous Cast ◽  
Continuous Cast Steel

Solidification properties in the selection of slag-forming mixtures for continuous-cast steel of different grades

2010 ◽  
Vol 40 (12) ◽  
pp. 1070-1076 ◽  
Author(s):  
S. A. Suvorov ◽  
V. G. Ordin ◽  
S. B. Eroshkin ◽  
E. A. Vikhrov
Keyword(s):  
Cast Steel ◽  
Continuous Cast ◽  
Continuous Cast Steel ◽  
Selection Of

Micro-Macro Modeling of Continuous Cast Steel to Simulate the Effect of Casting Velocity and Pouring Temperature on Copper Segregation

2012 ◽  
Author(s):  
A. Mehran Shahhosseini ◽  
Malur N. Srinivasan
Keyword(s):  
Cast Steel ◽  
Micro Model ◽  
Solute Redistribution ◽  
Continuous Cast ◽  
Pouring Temperature ◽  
Macro Model ◽  
Macro Modeling ◽  
Hot Shortness ◽  
Continuous Cast Steel ◽  
Surface Hot Shortness

One of the most serious problems in using recycled scrap for steel production is the occurrence of surface hot shortness during hot deformation due to the presence of copper in scrap. Copper causes surface hot shortness by liquid embrittlement. Therefore, the amount of the liquid copper-enriched phase penetrating into the grain boundaries should be identified in order to keep its effects within acceptable limits. In this regard, understanding the mechanism of segregation during solidification of steel is essential. This paper attempts to demonstrate micro-macro modeling of continuous cast steel to simulate the effect of casting velocity and pouring temperature on copper segregation. First, the temperature profiles at different times were determined using a finite element (macro) model and a segregation (micro) model based on Giovanola-Kurz approach is coupled with the macro model. It is necessary to couple the heat flow calculations from the macro model and the segregation calculations from the micro model because the rate of latent heat liberation is affected by the solute redistribution process, while the solute redistribution process depends on the cooling rates. As the casting velocity and pouring temperature strongly affect the solidification of continuous cast steel, they were chosen as the variables in this study. It is hoped that this study will enable the optimization of these variable to minimize the segregation of copper. This paper also demonstrates that by decreasing casting velocity and pouring temperature of a steel billet during continuous casting, solid-liquid interface moves faster to the center of the billet and there is less chance for diffusion of the residual elements in steel. Therefore, the chance of hot shortness of copper in the steel increases.

Numerical Modeling of Nonmetallic Inclusions Flowing Out during Solidification of Continuous Cast Steel Billets in Mould Zone

2012 ◽  
Vol 706-709 ◽  
pp. 1385-1390 ◽  
Author(s):  
Wlodzimierz Derda ◽  
Ireneusz Staniewski
Keyword(s):  
Liquid Steel ◽  
Cast Steel ◽  
Continuous Casting Machine ◽  
Casting Machine ◽  
Continuous Cast ◽  
Metallic Inclusions ◽  
Different Types ◽  
Metal Volume ◽  
Steel Grades ◽  
Continuous Cast Steel

Developing the metallurgical purity of steel products requires, among other things, the understanding of the behavior of non-metallic inclusions (NMI) in the bulk of liquid steel in the mould zone within the forming skin of a concast billet. The identification of the mode of NMI distribution with different values of casting parameters influencing the state of the metal in the mould, including electromagnetic stirring intensity, may be of key importance to developing the metallurgical purity of concast billets being cast. The present article discusses the analysis of the results of simulation of NMI flowing out from the liquid steel volume in the mould zone of the steel continuous casting machine (CCM). As the investigation object, two different types of square cross-section mould were chosen, while for carrying out computations for two selected steel grades, a hydrodynamic module (HDM) being an extension of the FLUENT® program was employed. The use of this module made it possible to take consideration of the influence of the EMS-M type electromagnetic stirrer on the conditions of NMI flotation and distribution in the metal volume within the mould for defined thermal – dynamical conditions.

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