Now showing items 1-4 of 4

    • Analysis of secondary refining slag parameters with focus on inclusion cleanliness 

      Pereira, Julio Anibal Morales; Rocha, Vinicius Cardoso da; Yoshioka, Ayumi; Bielefeldt, Wagner Viana; Vilela, Antonio Cezar Faria (2018) [Journal article]
      Secondary refining slag samples with different chemical compositions (45-54 % CaO, 7-13 % Al2O3, 20-29 % SiO2, 9-16 % MgO, 0-5 % CaF2) were investigated to verify the influence of their effective viscosity on inclusion ...
    • Analysis of spinel based inclusions during the last stage of the steelmaking process of SAE 52100 

      Pereira, Julio Anibal Morales; Rocha, Vinicius Cardoso da; Alves, Pedro Cunha; Bielefeldt, Wagner Viana; Vilela, Antonio Cezar Faria (2020) [Journal article]
      Al2 O3 (alumina) and MgO·Al2 O3 (spinel) inclusions cause valve obstruction (clogging) in continuous casting and can deteriorate the quality of the final product. In this context, industrial heats of the bearing steel SAE ...
    • Determinação do tempo de mistura numa panela siderúrgica 

      Pereira, Julio Anibal Morales; Francois, Magda Beatriz Galant; Vilela, Antonio Cezar Faria (2002) [Journal article]
      A eficiência do processo de fabricação do aço durante a etapa de refino secundário na panela está relacionada aos fenômenos de mistura. Em função disto, é de muito interesse o conhecimento do estado de mistura que ocorre ...
    • Effective viscosity of slag and kinetic stirring parameter applied in steel cleanliness during vacuum degassing 

      Rocha, Vinicius Cardoso da; Pereira, Julio Anibal Morales; Yoshioka, Ayumi; Bielefeldt, Wagner Viana; Vilela, Antonio Cezar Faria (2017) [Journal article]
      The process of vacuum degassing occurs during the secondary refining of special steels. Its main function is to remove undesirable gases. However, during this process, flotation phenomenon and inclusions absorption are ...