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Title:
METHOD FOR IMPROVING FLUIDITY OF SOLID-LIQUID TWO-PHASE REGION IN MIDDLE AND LATE SOLIDIFICATION STAGES OF CONTINUOUS CASTING PROCESS, AND METHOD AND DEVICE FOR CONTROLLING QUALITY OF CAST INGOT
Document Type and Number:
WIPO Patent Application WO/2019/184729
Kind Code:
A1
Abstract:
A method for improving the fluidity of a solid-liquid two-phase region in middle and late solidification stages of a continuous casting process comprises applying intermittent excitation force to a surface of an ingot shell (120) at a solidified end of a continuously cast ingot (100), wherein intermittent excitation force can be further applied to the surface of the ingot shell at a solidified intermediate segment of the continuously cast ingot. Additionally, a method for controlling quality of a cast ingot in a solidification process of continuous casting and a device for controlling quality of a cast ingot in a solidification process of continuous casting are provided. Excitation force applied to a surface of an ingot shell at a solidified end of a continuously cast ingot improves shrinkage compensation of semi-solidified molten steel in intermediate and late solidification stages and reduces porosity of an internal structure of the cast ingot. Excitation force applied to the surface of an ingot shell at a solidified intermediate section of a continuously cast ingot breaks up dendritic crystal head growth at a solidification front edge during a cooling process in an even manner and promotes growth of equiaxed crystals.

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Inventors:
WU LIPING (CN)
SHEN CHANG (CN)
CAO TIANMING (CN)
ZHOU SHOUHAO (CN)
LU QIANG (CN)
WANG GUOCAI (CN)
XIE SHIHONG (CN)
Application Number:
PCT/CN2019/078323
Publication Date:
October 03, 2019
Filing Date:
March 15, 2019
Export Citation:
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Assignee:
MAANSHAN IRON & STEEL CO LTD (CN)
International Classes:
B22D11/114
Foreign References:
CN108526423A2018-09-14
CN208116707U2018-11-20
CN101778682A2010-07-14
JP2006110620A2006-04-27
CN103464704A2013-12-25
JPH06297107A1994-10-25
JP2002273554A2002-09-25
CN102264490A2011-11-30
CN105710326A2016-06-29
CN101983113A2011-03-02
Attorney, Agent or Firm:
WEN PARTNERS, P.C. (CN)
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