Effect of controlled cooling after hot rolling on the mechanical properties of a low carbon niobium microalloyed steel wire rod Felipe Farage David, Sayd Farage David, Renan Carreiro Rocha, Ricardo Arthur Sanguinetti Ferreira Materials Science Forum, 2018 The wire rod has high relevance due to its wide application as a raw material for steel wire and wire processed in cold rolling mills and drawing. The control of process variables, such as cooling rate, coiling temperature, rolling speed is essential for obtaining the microstructures and therefore mechanical properties of the material. The purpose of this work is to study the behavior of the microstructure and mechanical properties with the variation of thermomechanical treatment in the hot rolling of wire rod. The steels used in this study were the microalloyed niobium steel equivalent to ASTM A913 grade 50 and carbon steel equivalent to ASTM A510 grade 1013. Despite the carbon steel has higher equivalent carbon to microalloyed steel, was found higher yield strength (σe) in the microalloyed niobium steel. Thus, by applying appropriate thermomechanical treatment in microalloyed steel is possible to improve mechanical properties mainly due to grain refining.
Artificial neural network model for predict of silicon content in hot metal blast furnace Sayd Farage David, Felipe Farage David, M.L.P. Machado Materials Science Forum, 2016 The growing focus on the efficiency of the reduction process in blast furnace generates an alteration in the way they operate. This modifies the conditions of transfer of silicon for the hot metal and can cause problems in the added value of your product. To evaluate the changes of the operational parameters of the reduction on the conditions of transfer of silicon process a mathematical model based on artificial neural networks has been implemented. Through this model it was possible to predict the silicon content to determine the influence of each operational parameter. Artificial neural networks were able to predict the silicon content through parameters of the reduction in blast furnace process, and this was verified by the precision of this model. The ANN showed that Theoretical flame temperature, Pressure blow and Coke rate have a positive influence on the silicon content in hot metal, and the Hot metal rate is inversely proportional to the silicon content of the hot metal.
Static aging behavior of microalloyed wire steel and carbon wire steel Felipe Farage David, Sayd Farage David, Lucas Lira Silveira, Ricardo Arthur Sanguinetti Ferreira Materials Science Forum, 2016 The reinforcing wire production CA-60 is highly relevant due to its wide application in concrete products (welded wire mesh and truss girder), driven by growing demand for products of the construction area. One of the properties required by ABNT / NBR 7480/07 is the yield stress (σe), which has a direct effect on the maximum load that the structural component may be subjected in service. The addition of steel wire temperature during cold rolling increases the σe and reduces the ductility due to the aging phenomenon. These variations occur due to the formation of solute atoms atmosphere around the dislocations. The purpose of this paper is to study the behavior of σe during heat treatment of static aging at 100 °C in the wire CA-60 steel made from the niobium microalloyed steel equivalent ASTM A913 and the equivalent ASTM 1013 steel. As a result the wire carbon steel 1013 showed the same variation of σe during static aging of niobium microalloyed steel A913. This phenomenon was justified because of the increased level of pro-eutectoid ferrite and grain size in the carbon steel 1013.
Artificial neural networks model to predict the sulfur percentage at the hot metal in the blast furnace Aistech Iron and Steel Technology Conference Proceedings, 2014
Thermomicrostructural model for calculate the roll force, grain size and fractional recrystallization in carbon steels 65th Abm International Congress 18th Ifhtse Congress and 1st TMS Abm International Materials Congress 2010, 2010
RECENT SCHOLAR PUBLICATIONS
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An analysis of pulverized coal injection in blast furnaces by rist diagram/Uma análise sobre a injeção de carvão pulverizado em altos-fornos por meio do diagrama de rist SF David, FF David, RC Nascimento Braz. J. Dev 6, 88911-88929 , 2020 2020.0 Citations: 1
Effect of Controlled Cooling after Hot Rolling on the Mechanical Properties of a Low Carbon Niobium Microalloyed Steel Wire Rod FF David, SF David, RC Rocha, RAS Ferreira Materials Science Forum 930, 333-338 , 2018 2018.0
Artificial neural network model for predict of silicon content in hot metal blast furnace SF David, FF David, MLP Machado Materials Science Forum 869, 572-577 , 2016 2016.0 Citations: 38
Static aging behavior of microalloyed wire steel and carbon wire steel FF David, SF David, L Lira Silveira, RAS Ferreira Materials Science Forum 869, 435-440 , 2016 2016.0 Citations: 2
Surface, microstructural and electrochemical analysis of Ti-6Al-4V alloy manufactured by direct metal laser sintering for biomedical applications RC Rocha, AG Galdino, SF David, PR Viana, FF David Sociedade Latino Americana de Biomateriais e Órgãos Artificiais (SLABO), São … , 2016 2016.0
ESTUDO DE CASO: FABRICAÇÃO, CONTROLE E GESTÃO DE CUSTOS DE FIO DIAMANTADO NA EMPRESA COFIPLAST ACT Christo, WAG Canzian, WG Ferreira, I Cardoso, SF David, ... Revista Univap 22 (40), 353-353 , 2016 2016.0
Parâmetros termodinâmicos e cinéticos de misturas dessulfurantes à base de CaO, MgO, SiO2 e CaF2 FN Aguiar, HCC Oliveira, RC Nascimento, JR Oliveira Tecnologia em Metalurgia, Materiais e Mineração 9 (3), 242-249 , 2013 2013.0 Citations: 1
Análise da influência dos fatores operacionais dos altos fornos sobre o teor do silício e enxofre no ferro gusa por meio de redes neurais artificiais SF David 2013.0
AN ANALYSIS ABOUT THE PULVERIZED COAL INJECTION IN BLAST FURNACES AT ARCELORMITTAL TUBARAO 1 BY RIST DIAGRAM SF David, RC Nascimento, JR De Oliveira, MLP Machado Tecnologia em Metalurgia, Materiais e Mineracao 20110912, 84-96 , 2011 2011.0
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REVISÃO DE LITERATURA: FERRAMENTAS DIAMANTADAS COM MATRIZES FERROSAS D dos Santos Machado, SF David
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MOST CITED SCHOLAR PUBLICATIONS
Artificial neural network model for predict of silicon content in hot metal blast furnace SF David, FF David, MLP Machado Materials Science Forum 869, 572-577 , 2016 2016.0 Citations: 38
Static aging behavior of microalloyed wire steel and carbon wire steel FF David, SF David, L Lira Silveira, RAS Ferreira Materials Science Forum 869, 435-440 , 2016 2016.0 Citations: 2
An analysis of pulverized coal injection in blast furnaces by rist diagram/Uma análise sobre a injeção de carvão pulverizado em altos-fornos por meio do diagrama de rist SF David, FF David, RC Nascimento Braz. J. Dev 6, 88911-88929 , 2020 2020.0 Citations: 1
Parâmetros termodinâmicos e cinéticos de misturas dessulfurantes à base de CaO, MgO, SiO2 e CaF2 FN Aguiar, HCC Oliveira, RC Nascimento, JR Oliveira Tecnologia em Metalurgia, Materiais e Mineração 9 (3), 242-249 , 2013 2013.0 Citations: 1
Análise bibliométrica na base de dados scopus sobre “tratamento térmico nos aços AISI 4140 e AISI 4340” D dos Santos Machado, GG Louzada, SF David, JC Sessa Caderno Pedagógico 21 (13), e12820-e12820 , 2024 2024.0
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Tecnologias e novos materiais na confecção de brocas diamantadas SF David, FR de Souza Machado, R da Silva Guimarães, JV Cheren, ... Congresso Fluminense de Pós-Graduação-CONPG , 2023 2023.0
Desenvolvimento de uma estufa microcontrolada via arduino para controle da temperatura e umidade do ar de microscópios ópticos Development of a microcontrolled greenhouse via … FF David, TL Maria, AP Moreira, LMC Vasconcelos, VA Silvestre, ... 2021.0
Determinação das temperaturas de transformação AR1 e AR3 em barras de aço CA-50 laminadas a quente Determination of the transformation temperatures AR1 and AR3 for hot rolled … FF David, LMC Vasconcelos, VA Silvestre, SF David Braz. J. of Develop 6 (11), 89375-89385 , 2020 2020.0
Effect of Controlled Cooling after Hot Rolling on the Mechanical Properties of a Low Carbon Niobium Microalloyed Steel Wire Rod FF David, SF David, RC Rocha, RAS Ferreira Materials Science Forum 930, 333-338 , 2018 2018.0
Surface, microstructural and electrochemical analysis of Ti-6Al-4V alloy manufactured by direct metal laser sintering for biomedical applications RC Rocha, AG Galdino, SF David, PR Viana, FF David Sociedade Latino Americana de Biomateriais e Órgãos Artificiais (SLABO), São … , 2016 2016.0
ESTUDO DE CASO: FABRICAÇÃO, CONTROLE E GESTÃO DE CUSTOS DE FIO DIAMANTADO NA EMPRESA COFIPLAST ACT Christo, WAG Canzian, WG Ferreira, I Cardoso, SF David, ... Revista Univap 22 (40), 353-353 , 2016 2016.0
Análise da influência dos fatores operacionais dos altos fornos sobre o teor do silício e enxofre no ferro gusa por meio de redes neurais artificiais SF David 2013.0
AN ANALYSIS ABOUT THE PULVERIZED COAL INJECTION IN BLAST FURNACES AT ARCELORMITTAL TUBARAO 1 BY RIST DIAGRAM SF David, RC Nascimento, JR De Oliveira, MLP Machado Tecnologia em Metalurgia, Materiais e Mineracao 20110912, 84-96 , 2011 2011.0
Thermomicrostructural model for calculate the roll force, grain size and fractional recrystallization in carbon steels MLP Machado, SF David, FF David Tecnologia em Metalurgia, Materiais e Mineracao 20100726, 794-803 , 2010 2010.0
REVISÃO DE LITERATURA: FERRAMENTAS DIAMANTADAS COM MATRIZES FERROSAS D dos Santos Machado, SF David
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CRIAÇÃO E VIABILIDADE DE MATERIAL DIDÁTICO PARA ENSINO DE PROJEÇÕES ORTOGONAIS EM PRÁTICAS DE DESENHO TÉCNICO JR Rodrigues, CF de Oliveira, SF David, M Chagas
MODELO DE REDES NEURAIS ARTIFICIAIS PARA PREDIÇÃO DO TEOR DE ENXOFRE NO FERRO GUSA DE ALTOS FORNOS SF David, MB Silva, RC Nascimento, MLP Machado
Artificial Neural Networks Model to Predict the Sulfur Percentage at the Hot Metal in the Blast Furnace SF David, MB Silva, MLP Machado
