Steel Plant
Mostrando 13-24 de 75 artigos, teses e dissertações.
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13. Gestão da qualidade aplicada à melhoria do processo de produção de carvão vegetal / Quality management applied to improve the production process of charcoal
The forestry sector contributes significantly to the Brazilian Gross Domestic Product (GDP), as well as to generate employment and income. The research for this sector brought numerous technological advances in areas such as forestry, plant breeding, soil management and water resources. However, few studies have studied management, responsible for increasing
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/12/2011
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14. Uma aplicação de opções reais no setor siderúrgico: opção de expansão.
This paper will analyze the application of Real Options Analysis - ROA at an investment project at steel industry. ROA is an investment analysis model that associate the management flexibility with the traditional analysis, in this case the expansion flexibility will be used. ROA will be applied in a case study where a steel plant will be expanded from 3.0Mt
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/08/2011
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15. Concretos submetidos a ciclos de temperaturas elevadas : estudos experimentais em corpos de prova localizados em unidades de produção de uma usina siderúrgica
O objetivo do presente trabalho é avaliar o estado de degradação em concretos localizados em uma unidade de produção de usina siderúrgica, submetidos a períodos prolongados de exposição à ciclos de temperaturas elevadas provenientes do processo de produção, pesquisando os efeitos sobre propriedades físicas, mecânicas e alterações de sua micro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/03/2011
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16. Desenvolvimento de software de simulação da solidificação de aços no processo de lingotamento contínuo de tarugos / Development of simulation software for the continuous casting process of steel billets
The development and application of simulation software for the continuous casting process is proposed in this work. The heat transfer and solidification models were validated with experimental results of temperature measurements in an industrial plant as well as with steel billets samples. Thermocouples embedded in the mold walls were used to measure tempera
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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17. Assessment of hydrophobicity and roughness of stainless steel adhered by an isolate of Bacillus cereus from a dairy plant
The interaction between the surface of stainless steel and Bacillus cereus was studied in terms of the characteristics of interfacial interaction determined from the measurement of the contact angle of the surface of B. cereus and stainless steel in the presence or absence of B. cereus adherence. The microtopographies and the roughness of the surface of stai
Brazilian Journal of Microbiology. Publicado em: 2010-12
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18. VALIDATION OF METHODS FOR WDXRF AND OES-SPARK TECHNIQUES IN STEEL ANALYSIS. DETERMINATION OF THE UNCERTAINTY OF MEASUREMENTS FOR API STEEL PLANT SAMPLE / Validação de métodos para as técnicas de WDXRF e OES -spark, na análise de aços. Cálculo de incerteza de medição para amostras de processo, aço classe API
The increase of gas and petroleum demanding in the national and international markets, the specification and certification of the chemical analysis results of gas and oil pipe-line have became more and more challenging. A continuous development has been outlined to improve API grade alloy steels (American Petroleum Institute). The steel properties depend on
Publicado em: 2009
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19. Avaliação estatística dos parâmetros operacionais das unidades de regeneração de ácido clorídrico da Usiminas
Operational parameters of the hydrochloric acid regeneration process and iron oxide production of the USIMINAS industrial plant were evaluated aiming to: (i) identify those statistically significant both for the quality of the oxide produced as for the generation of gases, and (ii) to develop statistical models that allow a satisfactory assessment of the pro
Publicado em: 2009
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20. Desenvolvimento de acabamento rolled-on em aço inoxidável
Different kinds of finishes exist for steels, a new one known Rolled-On (RO) could show with different surfaces patterns, with different roughness and gloss. This work presents the development of the RO finishes in 439 stainless steel with 1,5mm thick. This new finishes will be produced to substitute the grindings finishes. A RO finishes is obtained using a
Publicado em: 2009
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21. Estudo de uma metodologia baseada na utilizacao de ferramentas de simulacao numérica aplicadas às áreas de manutenção
Maintenance area has striven for new work methods as an approach to support the growing demand of expansions and diversification in national Steelmaking Production. In this context, it has searched an increase of equipment lifetime and fault analysis through the employment of tools which have been, up to this time, more commonly used in the field of project
Publicado em: 2009
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22. Desenvolvimento experimental e validaÃÃes do processo catalÃtico (Ni/γ-Al2O3/CeO2-Al2O3) de reforma metano-diÃxido de carbono em reator de leito fluidizado
Carbon dioxide of methane reforming into syngas over Ni/γ-Al2O3 and Ni/CeO2-Al2O3 catalysts was investigated. The Nikel catalysts presented high activity and stability although of the potential of coke formation on its active sites. The development of the dry methane reform for process, main component of natural gÃs (GN), was studied in a fluidized bed
Publicado em: 2009
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23. Project and assembling of pneumatic transport pilot unit in diluted phase for studying the relationship between the pressure drop and the distribution of granular particles into the cross section of industrial pipes / Projeto e montagem de unidade piloto de transporte pneumatico em fase diluida para estudo da relação entre a perda de carga e a distribuição de particulas granulares na seção transversal de dutos industriais
The pneumatic transport that involves the use of air particles to move materials through pipes is a major operation in various industries and chemical processes. Typical examples are systems for the conversion of energy from coal, catalytic cracking, drying and transport of solid and fine granular. The conventional pneumatic transport is often operated in di
Publicado em: 2009
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24. Grain size evolution of a vanadium microalloyed steel during bar rolling mill - 38MnSiV5. / Estudo da evolução do tamanho de grão na laminação a quente de barras de aço médio carbono microligado ao vanádio - 38MnSiV5.
Microalloyed steels are used as forging stock for many automotive parts such as crankshafts and connecting rods. Using mathematical equations describing the recrystallization kinetics and grain growth, a spreadsheet has been developed to simulate the austenitic grain size evolution during bar rolling mill schedules as a function of temperature, strain rate a
Publicado em: 2008