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- Title
ANÁLISE COMPARATIVA DE CARGAS DE LAMINAÇÃO A QUENTE INDUSTRIAIS COM AS OBTIDAS ATRAVÉS DE MODELAMENTO MATEMÁTICO.
- Authors
Diniz Dias, Evaldo; de Castro, Jose Adilson; de Oliveira Araújo, Fabio; Roberto Xavier, Carlos; Pimentel Sampaio, Alexandre
- Abstract
A comparison between the rolling loads calculated through the theoretical models of Sims, Orowan-Pascoe and Ekelund is performed in order to verify the performance of the models compared to the real values recorded during the processing of plain carbon-manganese steels and niobium steels during the finish rolling in the hot strip mill. To determine the hot deformation resistance, the equations of Shida, Poliak & Siciliano, Siciliano, Marini & Bruna, Siciliano, Leduc & Hensger, Misaka and Siciliano & Jonas are used. In the direct comparison between the calculated values and the actual values the best level of precision is obtained when the load prediction models are combined with the Shida equation, respectively Sims, Orowan-Pascoe and Ekelund. In order to better adjust calculated loads to the reality of the industrial process, adjustment factors are proposed for each of the seven stands of the finishing mill. With the application of the adjustment factors, the load prediction equations presented global mean errors in the finishing mill, varying between 4.3 and 5.6% for C-Mn steels and 4.6 and 6.3% for niobium steels.
- Subjects
HOT rolling; MANUFACTURING processes; NIOBIUM; PREDICTION models; STEEL walls
- Publication
Tecnologia em Metalurgia, Materiais e Mineração, 2019, Vol 16, Issue 3, p325
- ISSN
2176-1515
- Publication type
Article
- DOI
10.4322/2176-1523.20191714