Continuous Casting Of Steel
Mostrando 13-24 de 25 artigos, teses e dissertações.
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13. Evaluation of carbon effect in mould fluxes for continuous casting of steel. / Avaliação do efeito do carbono em fluxantes para lingotamento contínuo de aços.
In order to assure good performance of mould flux for continuous casting of steel, the chemical composition definition is important to guarantee the properties needs to its perfect behavior in the mould. Carbon is added to the mould flux to control the melting rate, since this property is related to the availability of liquid slag to fill in the gap between
Publicado em: 2006
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14. MODELAMENTO MATEMÁTICO DA ZONA DE MISTURA DE AÇOS EM LINGOTAMENTO CONTÍNUO
The increase of the production of steels through continuous casting machines requires long ladle sequences without interruption; if this condition is achieved it brings out stability and safeness and also reduction of operational cost. Companhia Siderúrgica de Tubarão (CST) arrival at the hot rolled coil market is demanding flexibility to supply small tonn
Publicado em: 2006
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15. ESTUDO FENOMENOLÓGICO DO MECANISMO DE OBSTRUÇÃO DO FLUXO DE AÇO DO DISTRIBUIDOR PARA O MOLDE NO INÍCIO DO LINGOTAMENTO CONTÍNUO DE PLACAS
The foccus of this work is the phenomenon known as start freezing blockage of the first batch of liquid steel flowing from tundish to mold through the slide gate system of a continuous casting machine. The flow rate is set by adjusting the position of the refractory sliding gate but in some instances, due to factors such as liquid steel temperature, refracto
Publicado em: 2006
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16. Levantamento das inclusões nos principais grupos de aços produzidos em aciaria do tipo LD. / Non-metallic inclusions in BOF steels, secondarily refined, destined to continuous casting of slabs.
Foram tomadas amostras de aço líquido referentes a três grupos de aço, a saber: (I) aços baixo-carbono (0,02 %C 0,08), acalmados ao alumínio; (II) aços peritéticos (0,09 %C 0,15), acalmados ao alumínio e silício; (III) aços ultrabaixo carbono ( C<35 ppm), acalmados ao alumínio.Os aços foram produzidos em aciaria do tipo LD e foram, a seguir, tra
Publicado em: 2006
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17. Trinca de solidificação off-corner no lingotamento contínuo de Tarugos
Internal cracks are a major quality problem in the continuous casting of billets. At Belgos plant, located in João Monlevade, off-corner crack is the most common kind of internal crack in steel billets. This type of crack occurs more frequently in medium carbon steels (carbon content between 0.25 and 0.45%). The focus of the present investigation is the ide
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/04/2005
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18. Caracterização microestrutural e mecânica de aços resisitentes ao fogo a base de MO-Si-P
Cracking problems during continuous casting of USI SAC structural steels produced by USIMINAS has led to development of a new steel design based on the substitution of Si and P for this former alloy base (Cr and Cu). The new design reduced significantly production costs associated with slab scarfing, without altering the original mechanical and physical char
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/09/2004
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19. Study of the nature of non-metallic inclusions in samples of aluminum and silicon killed low carbon steels, collected in the refining treatment and continuous casting stages
The amount, distribution, size and chemical composition of non-metallic inclusions have a direct influence on steel properties. By controlling size and chemical composition of these inclusions, it is possible to get a product with good quality. The identification of the nature and the control of inclusion formation are very important for steel cleanness. The
Materials Research. Publicado em: 2004-12
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20. A inserção de tecnicas de inteligencia artificial na modelagem matematica do lingotamento continuo de aços
The control of quality of products produced by continuous casting can not be achieved without a knowledge base of the process, which incorporates parameters and variables influence such as: equipment, cast metal, behavior of each component of the cooling system and operational conditions. This work presents the development of a computational algorithm (softw
Publicado em: 2001
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21. Analise de inclusões não-metalicas em aço de baixo carbono desoxidado ao aluminio produzido por lingotamento continuo
This work investigates the non-metallic inc1usions which are formed along the several stages of the industrial process of elaboration of the SAE 1015 steel, killed by aluminum, produced by continuous casting in the billets form, seeking a better understanding of the formation of inclusions with the objective of attaining a siderurgical product of better qual
Publicado em: 2001
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22. Simulation of thin strip continuous casting of steels / Simulação do lingotamento continuo de tiras finas de aços
It can be understood by process modeling the development of a quantitative or qualitative representation of the physical phenomena associated to the process. In this work, simulations concerning the twin roll continuous caster of steels process at IPT (Instituto de Pesquisas Tecnológicas do Estado de São Paulo) are performed. Two simulators were developed:
Publicado em: 2000
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23. Tratamento termomecanico de placas finas de aço microligado
The seeking for new technologies that aim costs reduction and quality and productivity improvement, has pushed the steelmakers to develop the near-net shape casting processes. One of these processes, the Thin Slabs Continuous Casting (TSCC), has been very diffused in hot strips and sheets production. In this work it will be showed the results of the thin sla
Publicado em: 2000
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24. Interação entre uma base de conhecimento e um modelo matematico de solidificação na analise da qualidade no lingotamento continuo de aços
In this work, a nunerical mode! based on the finite difference technique was developed permitting to determine the a thermal field evolution during solidification along the continuous casting process. The model predictions were compared to experimental results as well as to those furnished by other models found in literature. An interaction between a knowled
Publicado em: 1999