Characteristics of subsurface inclusions in deep-drawing steel slabs at high casting speed

2015 ◽  
Vol 112 (6) ◽  
pp. 608 ◽  
Author(s):  
Huixiang Yu ◽  
Xiaoxuan Deng ◽  
Xinhua Wang ◽  
Chenxi Ji ◽  
Guosen Zhu
Keyword(s):  
Casting Speed ◽  
Deep Drawing ◽  
High Casting Speed ◽  
Steel Slabs

Research on Hot State of Mould Copper Plate with High Casting Speed

2011 ◽  
Vol 337 ◽  
pp. 214-218
Author(s):  
Li Gen Sun ◽  
Hui Rong Li ◽  
Jia Quan Zhang
Keyword(s):  
Casting Speed ◽  
Distribution Curve ◽  
Thermal State ◽  
Process Analysis ◽  
Great Influence ◽  
Equivalent Strain ◽  
Copper Plate ◽  
Steel Shell ◽  
High Casting Speed ◽  
Strain Stress

High casting speed has a great influence to thermal state and strain/stress field of the mould copper plate. The coupled visco-elasto-plastic FEM models have been presented for thermal process analysis of steel shell and the mould copper plates. It is shown that, when the casting speed is increasing, the turning point of the temperature distribution curve is getting further to the meniscus; and the increasing casting speed has no influence to the equivalent strain distribution along the thickness direction of the mould.

The effect of casting speed on slag-inclusion defects in 1050 × 200 mm ultra-low-carbon automobile steel slabs

2021 ◽  
Vol 118 (6) ◽  
pp. 611
Author(s):  
Shujun Li ◽  
Xueyan Du
Keyword(s):  
Continuous Casting ◽  
Casting Speed ◽  
Nail Plate ◽  
Casting Process ◽  
Slag Inclusion ◽  
The Other ◽  
Low Carbon ◽  
Automobile Steel ◽  
Steel Slabs ◽  
Hot Rolled

The effect of casting speed on slag-inclusion defects in 1050 × 200 mm ultra-low-carbon automobile steel (UAS) slabs was studied by performing nail plate experiments and by monitoring the liquid level fluctuations during the continuous casting process. The number, location, length, and proportion of slag-inclusion defects in hot-rolled coils produced at different casting speeds were analyzed. The results showed that the defects in the hot-rolled coils were mainly owing to the mold protective slag. For the continuous casting speed of 1.6 m/min, the fraction of slag-inclusion defects was the lowest (at 5.3%), and the number of slag-inclusion defects was lower than for the other casting speeds. The length of slag inclusions was under 900 mm. Furthermore, the number of slag-inclusion defects on the upper and lower surfaces was smaller than those for the other casting speeds. At different casting speeds, slag-inclusion defects mainly existed within 100 mm of the edge on both surfaces of hot-rolled coil plates. The fluctuation within the 0–1 mm range was 98.1% for the casting speed of 1.6 m/min, indicating that the flow rate of molten steel on both sides of the nozzle was relatively stable, which helps to control slag-inclusion defects in hot-rolled coils.

The Overview on Sticking Breakout Behavior for Thin Slab Continuous Casting

2014 ◽  
Vol 1022 ◽  
pp. 201-204 ◽  
Author(s):  
Hui Rong Li ◽  
Li Gen Sun ◽  
Li Qun Ai
Keyword(s):  
Continuous Casting ◽  
Casting Speed ◽  
Hot Spot ◽  
Casting Process ◽  
Alloy Element ◽  
Thin Slab ◽  
Slab Continuous Casting ◽  
High Casting Speed ◽  
Mould Flux ◽  
Wear And Tear

Breakout is the most detrimental event associated with the continuous casting process, with the overview of the sticking breakout behavior, a lot of valuable things had been acquired. For the mechanism of the sticking breakout forming, the key for the breakout prevention is decreasing the probability of the hot spot; the content of the carbon or alloy element, the wear and tear of the mould corner, the mould flux, the fluctuation of the casting speed and the fluctuation of the meniscus are easy to cause the sticking; and with high casting speed and the funnel mould, the thin slab continuous casting is more easier to lead to sticking breakout than the normal strand.

Research on Thermocouple Embedded Theory for Thermal State of CC Mould Copper Plate with High Casting Speed

2011 ◽  
Vol 361-363 ◽  
pp. 623-627
Author(s):  
Li Gen Sun ◽  
Hui Rong Li ◽  
Jia Quan Zhang
Keyword(s):  
Casting Speed ◽  
Thermal Process ◽  
Thermal State ◽  
Process Analysis ◽  
Thermal Flux ◽  
Copper Plate ◽  
Steel Shell ◽  
High Casting Speed

High casting speed would change the thermal state of the mould copper plate, The coupled visco-elasto-plastic FEM models have been presented for thermal process analysis of steel shell and the mould copper plates. With the understanding to the mould thermal state for different casting speed, the characters of mould copper plate thermal flux is obtained. It is shown that, the highest thermal flux zone is getting downward with casting speed increasing, and it would also make harder for breakout signals catching.

Research on Thermocouple Embedded Position for CC Mould Copper Plate with High Casting Speed

2011 ◽  
Vol 291-294 ◽  
pp. 698-705
Author(s):  
Li Gen Sun ◽  
Jia Quan Zhang
Keyword(s):  
Casting Speed ◽  
Thermal Process ◽  
Thermal State ◽  
Process Analysis ◽  
Copper Plate ◽  
Steel Shell ◽  
Occurrence Probability ◽  
Cold Side ◽  
High Casting Speed

High casting speed would increase the occurrence probability of sticking, and make it harder for breakout signals catching. The coupled visco-elasto-plastic FEM models have been presented for thermal process analysis of steel shell and the mould copper plates. With the understanding to the mould thermal state and deformation for different casting speed, the principle for the layout of thermocouples is obtained. It is shown that, the set of the thermocouples to the meniscus for the plates should be decided by the highest design casting speed, and the location of the thermocouples from the cold side of the plates is deeper, the breakout signals would be caught easier.

Researches on the Behavior of Carbon and Sulfur Segregations of 82B Billet

2011 ◽  
Vol 399-401 ◽  
pp. 206-210 ◽  
Author(s):  
Hai Yan Tang ◽  
Hong Bin Wang ◽  
Hai Shun Li ◽  
Jing She Li ◽  
Qing Guo Wang
Keyword(s):  
Continuous Casting ◽  
Casting Speed ◽  
Field Trial ◽  
Dominant Factor ◽  
Central Position ◽  
Secondary Cooling ◽  
Hydraulic Simulation ◽  
High Casting Speed ◽  
Cooling Intensity ◽  
Wire Steel

The behavior of carbon and sulfur segregations of 82B hard wire steel produced under different continuous casting conditions has been systematically studied by the combination of field trial and laboratory analysis. The results showed three factors such as superheat degree, casting speed and F-EMS which influenced the segregation of billet worked differently with the variations of inner positions of the billet and segregation elements. For the central segregations of carbon and sulfur, the dominant factor was casting speed. Under high casting speed, proper increase of secondary cooling intensity could effectively decrease carbon and sulfur segregations of billet, especially for the central position of billet. The hydraulic simulation of the tundish showed the optimal casting speed should be 1.8m/min.

Surface Roughness of Cu-Be Alloy (C17200) Rod Alloy Produced by Horizontal Type Continuous Casting Process

2007 ◽  
Vol 26-28 ◽  
pp. 551-554
Author(s):  
Sang Kil Lee ◽  
H.S. Lee ◽  
Sung Chul Lim ◽  
T.K. Jung ◽  
K.H. Kim ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Continuous Casting ◽  
Casting Speed ◽  
Casting Process ◽  
Casting Method ◽  
Continuous Casting Process ◽  
Furnace Temperature ◽  
High Casting Speed ◽  
Speed Range ◽  
Horizontal Type

Cu-Be alloy (C17200) rod having diameter of 23.5mm was produced by a vacuum continuous casting method at furnace temperature range of from 1240°C to 1260°C with casting speed range of from 35mm/min to 103mm/min. When the furnace temperature was 1240°C and 1250°C, Cu-Be alloy rod without fracture could successfully produced at high casting speed of 103mm/min. However, when the furnace temperature was 1260°C, the breakout occurred at casting speed faster than 78mm/min. Surface roughness (Ra) increased with increasing not only a furnace temperature but also a casting speed.

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