The surface ring coarse grain structure and control measures of ultra-low carbon steel hot-rolled wire

Effects of supersaturation degree (S) in Al deoxidation on cleanliness and alumina inclusions in steel were studied. If enough Al was added to steel, higher initial dissolve oxygen before Al deoxidation resulted in higher steel cleanliness. In the experiments, with the rise of [mass% O] from 102 ppm to 340 ppm and 931 ppm, logS in steel melts were increased from 4.8, to 7.0 and 8.8, respectively. As a result, total oxygen (T.O) was decreased to 25 ppm, 22 ppm and 21 ppm, respectively. Based on the results, important influence of supersaturation degree on the formation of Al2O3 was revealed. At lower S, Al2O3 would be singular and smaller particles ≤ 5 µm that was difficult to be removed. However, Al2O3 would exist as large clusters in steel at higher S, which can be efficiently removed. By utilizing the findings in laboratory, RH refining of ultra-low-carbon steel was optimized. Steel cleanness and control of inclusions were improved. As a result, surface defects in cold rolling sheets caused by Al2O3 inclusions were effectively minimized.

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Prediction and control of subsurface hooks in continuous cast ultra-low-carbon steel slabs

Ironmaking & Steelmaking ◽

10.1179/174328108x369071 ◽

2009 ◽

Vol 36 (1) ◽

pp. 39-49 ◽

Cited By ~ 19

Author(s):

G.-G. Lee ◽

H.-J. Shin ◽

S.-H. Kim ◽

S.-K. Kim ◽

W.-Y. Choi ◽

...

Keyword(s):

Carbon Steel ◽

Low Carbon Steel ◽

Low Carbon ◽

Continuous Cast ◽

Prediction And Control ◽

Ultra Low Carbon Steel ◽

Steel Slabs ◽

And Control

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Finite Element Analysis of Carbon Diffusion at 930 ℃ in an Ultra-Low Carbon Steel for Hot Press Forming

Korean Journal of Metals and Materials ◽

10.3365/kjmm.2013.51.9.651 ◽

2013 ◽

Vol 51 (9) ◽

pp. 651-654 ◽

Cited By ~ 1

Author(s):

Soo Young Kang ◽

Byeongsik Ko

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Carbon Steel ◽

Low Carbon Steel ◽

Carbon Diffusion ◽

Low Carbon ◽

Hot Press ◽

Element Analysis ◽

Hot Press Forming ◽

Ultra Low Carbon Steel

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AISI 1015

Alloy Digest ◽

10.31399/asm.ad.cs0048 ◽

1972 ◽

Vol 21 (8) ◽

Keyword(s):

Fracture Toughness ◽

Carbon Steel ◽

Low Carbon Steel ◽

Heat Treating ◽

General Purpose ◽

Low Carbon ◽

Steel Mills ◽

Cold Worked ◽

Hot Rolled ◽

Good Workability

Abstract AISI 1015 is a low-carbon steel used in the annealed, cold-worked, hot-rolled or normalized condition for general purpose construction and engineering. It is also used for case-hardened components. It combines good machinability, good workability and good weldability. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: CS-48. Producer or source: Carbon steel mills.

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