scholarly journals EVALUATION OF THE EFFICIENCY OF USING SK30 WIRE IN STEEL PROCESSING AT THE LADLE FURNACE PLANT

2021 ◽  
pp. 46-49
Author(s):  
D. V. Rutskiy ◽  
A. Y. Agarkov ◽  
N. A. Zyuban ◽  
M. S. Nikitin ◽  
R. M. Vojtenko ◽  
...  
Keyword(s):  
Cast Billet ◽  
Vacuum Cleaner ◽  
Metallic Inclusions ◽  
Calcium Aluminates ◽  
Continuously Cast Billet ◽  
Steel Processing ◽  
Negative Effect ◽  
Continuously Cast ◽  
Filling Path ◽  
Furnace Plant

The paper presents studies showing the effectiveness of the use of wire with SiCa filler in the out-of-furnace processing of steels. The efficiency of use was evaluated by calculating the contamination with non-metallic inclusions, as well as by determining the phase composition of non-metallic inclusions at the stages of out-of-furnace processing and casting. (installation bucket furnace→vacuum cleaner→continuous casting). The study found that the adjustment of the content of aluminum before casting leads to the formation of refractory inclusions of corundum - (AlO), spinels - (AlO·MgO), which are deposited on the walls of the steel filling path and worsen the spillability of steel. The use of SK30prov with SiCa filler at the final stages of extra-furnace processing (after the introduction of aluminum), leads to the modification of refractory inclusions in low-melting calcium aluminates of the type (CaO·AlO). The presence of low-melting inclusions is more preferable, since this type of inclusions is not deposited on the walls of the filling cup and does not have a negative effect on the contamination of the continuously cast billet and products obtained from them with inclusions.

scholarly journals CHANGES IN THE COMPOSITION OF NON-METAL INCLUSIONS AND CONTAMINATION STEEL D DURED BY ALUMINUM

2020 ◽  
pp. 86-91
Author(s):  
G. V. Babin ◽  
D. V. Rutskiy ◽  
N. A. Zyuban ◽  
A. Yu. Agarkov
Keyword(s):  
Nonmetallic Inclusions ◽  
Maximum Size ◽  
Cast Billet ◽  
Secondary Oxidation ◽  
Casting Nozzle ◽  
Silicate Inclusions ◽  
Furnace Treatment ◽  
Metallic Inclusions ◽  
Continuously Cast Billet ◽  
Continuously Cast

Using optical and electron microscopy methods, the pollution of grade D carbon steel by nonmetallic inclusions in samples taken at the stages of metallurgical redistribution (EAF → LF → VOD → Casting). Metal contamination and chemical composition of non-metallic inclusions are determined. It was shown that deoxidation at the stage of production of the intermediate by aluminum leads to the formation of nonmetallic inclusions of corundum (Al2O3) in the metal melt, the proportion of which in total over all redistributions is 52%. Identification and assessment of contamination by non-metallic inclusions showed that subsequent stages of out-of-furnace treatment lead to a decrease in total pollution by inclusions. After evacuation and addition of Al and SiCa, corundum inclusions acquire a globular shape with a maximum size of not more than 6 μm. During solidification, the total contamination by non-metallic inclusions does not change, however. Contamination with silicate inclusions decreases, and the inclusion of corundum increases. The inclusions of corundum are irregular in shape, the high contamination with the inclusions of corundum is caused by secondary oxidation of aluminum during casting, as well as the ingress of products by overgrowing of the casting nozzle into the solidified continuously cast billet.

Production of High-Quality Wheel Steel. Part 1. Production Aspects of Continuously-Cast Billet Quality for Railway Wheel Manufacture

Metallurgist ◽  
2021 ◽  
Author(s):  
D. A. Pumpyanskiy ◽  
S. V. Tyutyunik ◽  
E. A. Kolokolov ◽  
A. A. Mescheryachenko ◽  
I. S. Murzin ◽  
...  
Keyword(s):  
Steel Part ◽  
Wheel Steel ◽  
Cast Billet ◽  
High Quality ◽  
Railway Wheel ◽  
Billet Quality ◽  
Continuously Cast Billet ◽  
Continuously Cast

Mould heat transfer and continuously cast billet quality with mould flux lubrication Part 1 Mould heat transfer

2000 ◽  
Vol 27 (1) ◽  
pp. 37-54 ◽  
Author(s):  
C.A.M. Pinheiro ◽  
I.V. Samarasekera ◽  
J.K. Brimacomb ◽  
B.N. Walker
Keyword(s):  
Heat Transfer ◽  
Cast Billet ◽  
Billet Quality ◽  
Mould Flux ◽  
Continuously Cast Billet ◽  
Continuously Cast

Special Features of the Structure and Properties of Continuously Cast Billet from Steel R6M5

2021 ◽  
Author(s):  
N. M. Aleksandrova ◽  
A. O. Cheretaeva ◽  
A. R. Mishet’yan ◽  
I. B. Chudakov ◽  
A. V. Polunin ◽  
...  
Keyword(s):  
Cast Billet ◽  
Steel R6m5 ◽  
Structure And Properties ◽  
Continuously Cast Billet ◽  
Continuously Cast

scholarly journals Investigation of a Temperature Field of the Steel Billet 150x150 mm Continuously Cast

2020 ◽  
Vol 328 ◽  
pp. 03002
Author(s):  
František Kavička ◽  
Jaroslav Katolický ◽  
Josef Štětina ◽  
Tomáš Mauder ◽  
Lubomír Klimeš
Keyword(s):  
Mass Transfer ◽  
Temperature Field ◽  
Numerical Models ◽  
Three Dimensional ◽  
Cast Billet ◽  
Operational Parameters ◽  
Measurement Results ◽  
Simultaneous Heating ◽  
Continuously Cast Billet ◽  
Continuously Cast

The solidification and cooling of a continuously cast billet and the simultaneous heating of the mold is a very complicated problem of three-dimensional (3D) transient heat and mass transfer. The solving of uch a problem is impossible without numerical models of the temperature field of the concasting itself which it is being processed through the concasting machine (caster). The application of the numerical model requires systematic experimentation and measurement of operational parameters on a real caster as well as in the laboratory. The measurement results, especially temperatures, serve not only for the verification of the exactness of the model, but mainly for optimization of the process procedure. The most important part of the investigation is the measurement of the temperatures in the walls of the mold and the surface of the slab in the zones of secondary and tertiary cooling.

scholarly journals Study of macro-segregations in a continuously cast billet

2017 ◽  
Vol 51 (2) ◽  
pp. 237-241
Author(s):  
L. Socha ◽  
V. Vodárek ◽  
K. Michalek ◽  
H. Francová ◽  
K. Gryc ◽  
...  
Keyword(s):  
Cast Billet ◽  
Continuously Cast Billet ◽  
Continuously Cast
Sign in / Sign up

Export Citation Format

Share Document