Initiation of Surface Cracks on Beam Blank in the Mold during Continuous Casting
Surface cracking seriously affects the quality of beam blanks, a relatively new blank in the continuous casting in China. In order to study the mechanism of the initiation and propagation of surface cracks, this study established a 2D micro-segmented model of the solidification process for a beam bl...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-09-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/8/9/712 |
| _version_ | 1819072414129061888 |
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| author | Gaiyan Yang Liguang Zhu Wei Chen Xingwang Yu Baomin He |
| author_facet | Gaiyan Yang Liguang Zhu Wei Chen Xingwang Yu Baomin He |
| author_sort | Gaiyan Yang |
| collection | DOAJ |
| description | Surface cracking seriously affects the quality of beam blanks, a relatively new blank in the continuous casting in China. In order to study the mechanism of the initiation and propagation of surface cracks, this study established a 2D micro-segmented model of the solidification process for a beam blank in the mold, with a user subroutine DFLUX written in Fortran. Using a contact algorithm, the stress in the shell of the beam was analyzed considering the mechanical properties of the material (Q235B), thermal stress, surface friction force and ferrostatic pressure. The results showed that at the center of the web, surface longitudinal cracks were most likely to initiate at a height of 180 mm from the meniscus; at the fillet, surface longitudinal cracks were most likely to initiate at a height of 200 mm from the meniscus. Moreover, the casting speed showed a greater effect on surface crack initiation than the pouring temperature did. This study reveals the cause of longitudinal crack initiation, and the most likely positions of cracks on the strand. Thus, it is instructive for controlling surface cracks in production. |
| first_indexed | 2024-12-21T17:37:21Z |
| format | Article |
| id | doaj.art-7e4e7eadcb984b9797a886ef7e1511ce |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-21T17:37:21Z |
| publishDate | 2018-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-7e4e7eadcb984b9797a886ef7e1511ce2022-12-21T18:55:44ZengMDPI AGMetals2075-47012018-09-018971210.3390/met8090712met8090712Initiation of Surface Cracks on Beam Blank in the Mold during Continuous CastingGaiyan Yang0Liguang Zhu1Wei Chen2Xingwang Yu3Baomin He4School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaNorth China University of Science and Technology, Tangshan 063210, Hebei, ChinaNorth China University of Science and Technology, Tangshan 063210, Hebei, ChinaNorth China University of Science and Technology, Tangshan 063210, Hebei, ChinaNorth China University of Science and Technology, Tangshan 063210, Hebei, ChinaSurface cracking seriously affects the quality of beam blanks, a relatively new blank in the continuous casting in China. In order to study the mechanism of the initiation and propagation of surface cracks, this study established a 2D micro-segmented model of the solidification process for a beam blank in the mold, with a user subroutine DFLUX written in Fortran. Using a contact algorithm, the stress in the shell of the beam was analyzed considering the mechanical properties of the material (Q235B), thermal stress, surface friction force and ferrostatic pressure. The results showed that at the center of the web, surface longitudinal cracks were most likely to initiate at a height of 180 mm from the meniscus; at the fillet, surface longitudinal cracks were most likely to initiate at a height of 200 mm from the meniscus. Moreover, the casting speed showed a greater effect on surface crack initiation than the pouring temperature did. This study reveals the cause of longitudinal crack initiation, and the most likely positions of cracks on the strand. Thus, it is instructive for controlling surface cracks in production.http://www.mdpi.com/2075-4701/8/9/712near net shapescontinuous castingfinite element modelingtemperature distributionstress distributionheat transfer |
| spellingShingle | Gaiyan Yang Liguang Zhu Wei Chen Xingwang Yu Baomin He Initiation of Surface Cracks on Beam Blank in the Mold during Continuous Casting Metals near net shapes continuous casting finite element modeling temperature distribution stress distribution heat transfer |
| title | Initiation of Surface Cracks on Beam Blank in the Mold during Continuous Casting |
| title_full | Initiation of Surface Cracks on Beam Blank in the Mold during Continuous Casting |
| title_fullStr | Initiation of Surface Cracks on Beam Blank in the Mold during Continuous Casting |
| title_full_unstemmed | Initiation of Surface Cracks on Beam Blank in the Mold during Continuous Casting |
| title_short | Initiation of Surface Cracks on Beam Blank in the Mold during Continuous Casting |
| title_sort | initiation of surface cracks on beam blank in the mold during continuous casting |
| topic | near net shapes continuous casting finite element modeling temperature distribution stress distribution heat transfer |
| url | http://www.mdpi.com/2075-4701/8/9/712 |
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