| Title: | Optimization of billet cooling after continuous casting using genetic programming—industrial study |
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| Authors: | ID Kovačič, Miha (Author)
ID Zupanc, Aljaž (Author)
ID Vertnik, Robert (Author)
ID Župerl, Uroš (Author) |
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| Files: |  metals-14-00819-v2.pdf (1,68 MB)
MD5: 0764245374A3353A1DBA9EB3146B1077
 https://www.mdpi.com/2075-4701/14/7/819
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FS - Faculty of Mechanical Engineering
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| Abstract: | ŠTORE STEEL Ltd. is one of the three steel plants in Slovenia. Continuous cast 180 mm × 180 mm billets can undergo cooling to room temperature using a turnover cooling bed. They can also be cooled down under hoods or heat treated to reduce residual stresses. Additional operations of heat treatment from 36 h up to 72 h and cooling of the billets for 24 h, with limited capacities (with only two heat treatment furnaces and only six hoods), drastically influence productivity. Accordingly, the casting must be carefully planned (i.e., the main thing is casting in sequences), while the internal quality of the billets (i.e., the occurrence of inner defects) may be compromised. Also, the stock of billets can increase dramatically. As a result, it was necessary to consider the abandoning of cooling under hoods and heat treatment of billets. Based on the collected scrap data after ultrasonic examination of rolled bars, linear regression and genetic programming were used for prediction of the occurrence of inner defects. Based on modeling results, cooling under hoods and heat treatment of billets were abandoned at the casting of several steel grades. Accordingly, the casting sequences increased, and the stock of billets decreased drastically while the internal quality of the rolled bars remained the same. |
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| Keywords: | billet cooling, continuous casting, ultrasonic testing, logistic regression, genetic programming, industrial study, steel making, optimization |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 03.06.2024 |
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| Article acceptance date: | 14.07.2024 |
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| Publication date: | 16.07.2024 |
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| Publisher: | MDPI AG |
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| Year of publishing: | 2024 |
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| Number of pages: | 12 str. |
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| Numbering: | Vol. 14, iss. 7, [article no.] 819 |
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| PID: | 20.500.12556/DKUM-91179  |
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| UDC: | 621.74:004.42 |
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| ISSN on article: | 2075-4701 |
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| COBISS.SI-ID: | 215361027 |
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| DOI: | 10.3390/met14070819 |
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| Copyright: | © 2024 by the authors |
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| Publication date in DKUM: | 25.11.2024 |
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| Views: | 178 |
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| Downloads: | 21 |
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| Metadata: |    |
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| Categories: | Misc.
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