Development of steel continuous casting in Japan: Has Bessemer’s dream come true?

Tomono, Hiroshi

doi:10.1179/0301923315z.000000000356

Cited by 5 publications

(2 citation statements)

References 9 publications

(25 reference statements)

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“…Longitudinal cracks occur frequently during continuous casting (CC) of peritectic steel, primarily owing to the peritectic reaction (liquid + δ ‐ferrite → γ ‐austenite) during solidification. [ 1,2 ] X‐ray diffraction data show that this reaction is associated with a density change, and as ferrite transforms into austenite, a 4.7% volume shrinkage occurs, resulting in considerable structural stress. Additionally, molten steel that is cooled too fast or unevenly in the mold generates significant stress on the weak part of the solidifying shell.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Mold Slag for Continuous Casting of Peritectic Steel

Zhang

et al. 2023

steel research int.

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To reduce the occurrence of stickers and longitudinal cracks during continuous casting (CC) of peritectic steel, herein, the use of a mold slag with high basicity and adequate lubrication is proposed. Laboratory results indicate that the mold slag with a basicity of 1.75 and 2.3 wt% Li2O content exhibits a lower break and melting temperatures and relatively fast crystallization rate. The proposed mold slag can rapidly induce crystallization to control the heat flux, and the residual flux after crystallization and formation of the solid slag still exhibits excellent lubrication on the initial shell. Thus, coordination control of heat transfer and lubrication during CC of peritectic steel can be achieved. Industrial trials obtain satisfactory results, the application of the designed mold slag reduces the occurrence of stickers, and longitudinal cracks are reduced at the initial stage of one sequence casting.

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Section: Introductionmentioning

confidence: 99%

Optimization of Mold Slag for Continuous Casting of Peritectic Steel

Zhang

et al. 2023

steel research int.

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“…2) Owing to the advancement of the understanding in steel solidification phenomena, steel structure, and strand behavior in the casting machine, caster profiles have been improved from simple vertical type to vertical and bending after complete solidification to curved mold and solid or liquid core unbending to vertical mold multi-point progressive bending and straightening with liquid core. 1) It had been reported that the internal cracks are resulted from the excessive tensile strains produced by means of straightening at the solidifying front of the slab. 3,4) Pascon et al and Pascon and Habraken had done some research works on the risk of transverse cracking during bending and straightening of steel slabs.…”

Section: Introductionmentioning

confidence: 99%