Thermal Crown Analysis of the Roll Sleeve in Twin-Roll Strip Casting Process

2013 ◽  
Vol 395-396 ◽  
pp. 936-940
Author(s):  
Hai Tao Cui ◽  
Guo Dong Wang
Keyword(s):  
Heat Flux ◽  
Cooling Water ◽  
Casting Process ◽  
Strip Casting ◽  
Finite Element Program ◽  
Cooling Channels ◽  
Cooling Water Temperature ◽  
Thermal Crown ◽  
Element Program ◽  
Twin Roll

In the twin-roll strip casting process, analyses of heat transfer and deformation for the casting roll sleeve are carried out by using the finite element program ANSYS to examine the the thermal crown. The effects of several factors such as molten pool temperature, heat flux onto the roll surface and roll edge, heat flux onto the cooling channels, and cooling water temperature on thermal crown are investigated. The results show that the thermal crown does not change sharply during the casting process, after the casting roll reaches thermal equilibrium.

Experimental Study on the Distribution of Heat Flux along Contact Arc in Twin-Roll Continuous Strip Casting

2016 ◽  
Vol 693 ◽  
pp. 761-766 ◽  
Author(s):  
Guang Ming Zhu ◽  
C. Zhang ◽  
P.G. Xu ◽  
G.C. Bai
Keyword(s):  
Heat Flux ◽  
Molten Metal ◽  
Casting Process ◽  
Strip Casting ◽  
Pouring Temperature ◽  
Interfacial Heat Flux ◽  
Twin Roll ◽  
Contact Arc ◽  
Continuous Strip

Heat flux between molten metal and casting rolls plays a key role in improving the quality of the strip, studying on the interfacial heat flux has very important theoretical significance and practical value. According to the contact form and the heat flux characteristics of molten metal and casting rolls in twin-roll strip casting process, a set of measuring equipments has been developed, which are used to measure the heat flow of the interface between the molten metal and solid, and a relevant software system has been exploited to acquire and analyze the experiment data. Using the method of combining experimental and numerical computation, we analyze the influence of pouring temperature on the contact interface heat flux. The experimental results show that the higher the pouring temperature , the greater the summit of heat flux density and the shorter time to the summit heat flux are, but when the pouring temperature reaches a certain critical value, the summit of heat flux will decrease with the increase of pouring temperature.

scholarly journals Reduction of CO2 Emissions in Steelmaking by Means of Utilization of Steel Plant Waste Heat to Stabilize Seasonal Cooling Water Temperature

2021 ◽  
Vol 13 (11) ◽  
pp. 5957
Author(s):  
Tomas Mauder ◽  
Michal Brezina
Keyword(s):  
Continuous Casting ◽  
Water Temperature ◽  
Co2 Emissions ◽  
Waste Heat ◽  
Cooling Water ◽  
Main Idea ◽  
Casting Process ◽  
Spray Cooling ◽  
Steel Plant ◽  
Cooling Water Temperature

Production of overall CO2 emissions has exhibited a significant reduction in almost every industry in the last decades. The steelmaking industry is still one of the most significant producers of CO2 emissions worldwide. The processes and facilities used at steel plants, such as the blast furnace and the electric arc furnace, generate a large amount of waste heat, which can be recovered and meaningfully used. Another way to reduce CO2 emissions is to reduce the number of low-quality steel products which, due to poor final quality, need to be scrapped. Steel product quality is strongly dependent on the continuous casting process where the molten steel is converted into solid semifinished products such as slabs, blooms, or billets. It was observed that the crack formation can be affected by the water cooling temperature used for spray cooling which varies during the year. Therefore, a proper determination of the cooling water temperature can prevent the occurrence of steel defects. The main idea is based on the utilization of the waste heat inside the steel plant for preheating the cooling water used for spray cooling in the Continuous Casting (CC) process in terms of water temperature stabilization. This approach can improve the quality of steel and contribute to the reduction of greenhouse gas emissions. The results show that, in the case of billet casting, a reduction in the cooling water consumption can be also reached. The presented tools for achieving these goals are based on laboratory experiments and on advanced numerical simulations of the casting process.

scholarly journals Effect of Oscillation Parameters to Flow Field in the Pool during the Oscillating Twin-Roll Strip Casting Process

2018 ◽  
Vol 31 (1) ◽  
Author(s):  
Zhi-Qiang Xu ◽  
Zhe-Ru Meng ◽  
Shun-Hui Xue ◽  
De-Quan Zhang ◽  
Feng-Shan Du
Keyword(s):  
Flow Field ◽  
Casting Process ◽  
Strip Casting ◽  
Twin Roll

Modelling of coupling flow and temperature fields in molten pool during twin-roll strip casting process

2007 ◽  
Vol 187-188 ◽  
pp. 339-343 ◽  
Author(s):  
X.M. Zhang ◽  
Z.Y. Jiang ◽  
L.M. Yang ◽  
X.H. Liu ◽  
G.D. Wang ◽  
...  
Keyword(s):  
Molten Pool ◽  
Casting Process ◽  
Strip Casting ◽  
Temperature Fields ◽  
Twin Roll

Effect of Water Temperature on Spray Cooling Heat Transfer on Hot Steel Plate

2010 ◽  
Author(s):  
Jungho Lee ◽  
Cheong-Hwan Yu ◽  
Sang-Jin Park
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Water Temperature ◽  
Steel Plate ◽  
Cooling Water ◽  
Local Heat ◽  
Spray Cooling ◽  
Transfer Coefficients ◽  
Cooling Water Temperature ◽  
Local Heat Flux

Water spray cooling is an important technology which has been used in a variety of engineering applications for cooling of materials from high-temperature nominally up to 900°C, especially in steelmaking processes and heat treatment in hot metals. The effects of cooling water temperature on spray cooling are significant for hot steel plate cooling applications. The local heat flux measurements are introduced by a novel experimental technique in which test block assemblies with cartridge heaters and thermocouples are used to measure the heat flux distribution on the surface of hot steel plate as a function of heat flux gauge. The spray is produced from a fullcone nozzle and experiments are performed at fixed water impact density of G and fixed nozzle-to-target spacing. The results show that effects of water temperature on forced boiling heat transfer characteristics are presented for five different water temperatures between 5 to 45°C. The local heat flux curves and heat transfer coefficients are also provided to a benchmark data for the actual spray cooling of hot steel plate cooling applications.

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