Analysis of Mold Level Hunching by Unsteady Bulging during Thin Slab Casting
In order to analyze the phenomenon of mold level hunching (MLH) during thin slab casting process, the variation of the mold level and the bulging of strand were measured and analyzed using Fast Fourier Transform (FFT) spectrum analysis. Both of mold level hunching and bulging had the same frequency...
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Veröffentlicht in: | ISIJ International 2002/10/15, Vol.42(10), pp.1103-1111 |
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creator | Yoon, U-Sok Bang, In-Wan Rhee, J. H. Kim, Seong-Yeon Lee, Joo-Dong Oh, Kyu Hwan |
description | In order to analyze the phenomenon of mold level hunching (MLH) during thin slab casting process, the variation of the mold level and the bulging of strand were measured and analyzed using Fast Fourier Transform (FFT) spectrum analysis. Both of mold level hunching and bulging had the same frequency and the specific frequency corresponded to the main roll pitch of the thin slab caster. The unsteady bulging was found to be a main reason of mold level hunching. The unsteady bulging profile through the full range of the caster and the height of mold level hunching were calculated using a heat transfer model and a continuous beam model. The effects of process variables on mold level hunching and the process condition of reducing mold level hunching were studied. The amount of mold level hunching increased as unsteady bulging increased due to the hunching of casting speed. An aperiodic roll pitch between segments could be effective in reducing mold level hunching. |
doi_str_mv | 10.2355/isijinternational.42.1103 |
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The amount of mold level hunching increased as unsteady bulging increased due to the hunching of casting speed. An aperiodic roll pitch between segments could be effective in reducing mold level hunching.</description><identifier>ISSN: 0915-1559</identifier><identifier>EISSN: 1347-5460</identifier><identifier>DOI: 10.2355/isijinternational.42.1103</identifier><language>eng</language><publisher>Tokyo: The Iron and Steel Institute of Japan</publisher><subject>aperiodic roll pitch ; Applied sciences ; continuous beam model ; Exact sciences and technology ; FFT analysis ; Gravity die casting and continuous casting ; Iron and steel making ; Metals. 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The effects of process variables on mold level hunching and the process condition of reducing mold level hunching were studied. The amount of mold level hunching increased as unsteady bulging increased due to the hunching of casting speed. An aperiodic roll pitch between segments could be effective in reducing mold level hunching.</description><subject>aperiodic roll pitch</subject><subject>Applied sciences</subject><subject>continuous beam model</subject><subject>Exact sciences and technology</subject><subject>FFT analysis</subject><subject>Gravity die casting and continuous casting</subject><subject>Iron and steel making</subject><subject>Metals. Metallurgy</subject><subject>mold level hunching (MLH)</subject><subject>Production of metals</subject><subject>thin slab casting</subject><subject>unsteady bulging</subject><issn>0915-1559</issn><issn>1347-5460</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><recordid>eNplkEFv3CAQhVGUSlml-Q_00N68BQMGjumqSSptlUM2ZzRg2BARnIJdaf997O4qPeQyIz19897oIfSFknXLhPgea3yOefQlwxiHDGnN2zWlhJ2hFWVcNoJ35BytiKaioULoC3RVa7SEtFxxRtkKba_ns0ONFQ8B_x5Sj7f-r0_4bsruKeY9tgf8mOvooT_gH1PaL1o_lWXtZgA_JLB4A3Wclc_oU4BU_dVpX6LHm5-7zV2zvb_9tbneNq6jYmwksTS4XvugbOuEnP9RSgchfOd7aS2RQVjBAhGaECDgLO9Ey8EClUpIzi7Rt6Pvaxn-TL6O5iVW51OC7IepmlYK2XVEzKA-gq4MtRYfzGuJL1AOhhKzVGg-VGh4a5YK59uvpxCoDlIokF2s_w04U1q1auZ2R-65jrD37wCUMbrkPyZQrfS_FHKaS9w77p6gGJ_ZG8tnlfE</recordid><startdate>20020101</startdate><enddate>20020101</enddate><creator>Yoon, U-Sok</creator><creator>Bang, In-Wan</creator><creator>Rhee, J. 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H.</creatorcontrib><creatorcontrib>Kim, Seong-Yeon</creatorcontrib><creatorcontrib>Lee, Joo-Dong</creatorcontrib><creatorcontrib>Oh, Kyu Hwan</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>ISIJ International</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yoon, U-Sok</au><au>Bang, In-Wan</au><au>Rhee, J. H.</au><au>Kim, Seong-Yeon</au><au>Lee, Joo-Dong</au><au>Oh, Kyu Hwan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Analysis of Mold Level Hunching by Unsteady Bulging during Thin Slab Casting</atitle><jtitle>ISIJ International</jtitle><addtitle>ISIJ Int.</addtitle><date>2002-01-01</date><risdate>2002</risdate><volume>42</volume><issue>10</issue><spage>1103</spage><epage>1111</epage><pages>1103-1111</pages><issn>0915-1559</issn><eissn>1347-5460</eissn><abstract>In order to analyze the phenomenon of mold level hunching (MLH) during thin slab casting process, the variation of the mold level and the bulging of strand were measured and analyzed using Fast Fourier Transform (FFT) spectrum analysis. Both of mold level hunching and bulging had the same frequency and the specific frequency corresponded to the main roll pitch of the thin slab caster. The unsteady bulging was found to be a main reason of mold level hunching. The unsteady bulging profile through the full range of the caster and the height of mold level hunching were calculated using a heat transfer model and a continuous beam model. The effects of process variables on mold level hunching and the process condition of reducing mold level hunching were studied. The amount of mold level hunching increased as unsteady bulging increased due to the hunching of casting speed. An aperiodic roll pitch between segments could be effective in reducing mold level hunching.</abstract><cop>Tokyo</cop><pub>The Iron and Steel Institute of Japan</pub><doi>10.2355/isijinternational.42.1103</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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subjects | aperiodic roll pitch Applied sciences continuous beam model Exact sciences and technology FFT analysis Gravity die casting and continuous casting Iron and steel making Metals. Metallurgy mold level hunching (MLH) Production of metals thin slab casting unsteady bulging |
title | Analysis of Mold Level Hunching by Unsteady Bulging during Thin Slab Casting |
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