Investigation on the bulging deformation of continuously cast wide-thick slab with numerical calculation method

Ma Xiaotao; Wu Chenhui; Xie Xin; Wu Guorong; Zhang Min; Zeng Jianhua; Ji Chen

doi:10.7513/j.issn.1004-7638.2021.01.017

Volume 42 Issue 1

Feb. 2021

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Ma Xiaotao, Wu Chenhui, Xie Xin, Wu Guorong, Zhang Min, Zeng Jianhua, Ji Chen. Investigation on the bulging deformation of continuously cast wide-thick slab with numerical calculation method[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(1): 106-112. doi: 10.7513/j.issn.1004-7638.2021.01.017

Citation:

Ma Xiaotao, Wu Chenhui, Xie Xin, Wu Guorong, Zhang Min, Zeng Jianhua, Ji Chen. Investigation on the bulging deformation of continuously cast wide-thick slab with numerical calculation method[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(1): 106-112. doi: 10.7513/j.issn.1004-7638.2021.01.017

Citation:

Ma Xiaotao, Wu Chenhui, Xie Xin, Wu Guorong, Zhang Min, Zeng Jianhua, Ji Chen. Investigation on the bulging deformation of continuously cast wide-thick slab with numerical calculation method[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(1): 106-112. doi: 10.7513/j.issn.1004-7638.2021.01.017

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Investigation on the bulging deformation of continuously cast wide-thick slab with numerical calculation method

doi: 10.7513/j.issn.1004-7638.2021.01.017

1.
Pangang Group Co., Ltd., Panzhihua 617022, Sichuan, China
2.
Panzhihua Iron and Steel Research Institute Co.,Ltd., Panzhihua 617000, Sichuan, China
3.
School of Metallugy, Northeastern University, Shenyang110819, Liaoning, China

Received Date: 2021-01-07
Publish Date: 2021-02-10

Abstract

Abstract

In continuous casting process, bulging deformation of the solidified shell occurs due to the ferrostatic pressure, which influences the smooth production and the internal quality of the continuously cast steel. In the present work, the continuously casting wide-thick slab was taken as the research object, and its bulging deformation at three typical strand positions L1(bending region), L2(middle of the bow region) and L3(straightening region) was quantitatively investigated with numerical calculation method. Bulging deformation of the solidified shell and the tensile strain distribution on the solidification front continuously increase from L1 to L3. The tensile strain along the slab thickness direction(ε_xx), along the casting direction(ε_yy) and along the slab width direction(ε_zz) present a characteristic of concentrated distribution and increase the risk of inducing triple-point cracks, midway cracks and internal corner cracks, respectively. With the casting speed increased from 0.7 m/min to 0.9 m/min, bulging deformation of the wide surface of the solidified shell and ε_xx, ε_zz firstly increase and then decrease, but the bulging deformation of the narrow surface of the solidified shell and ε_yy continuously increase.
- continuously cast,
- wide-thick slab,
- bulging,
- internal cracks,
- numerical calculation

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References(25)

References

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