2011
DOI: 10.1134/s0036029511120093
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Rational technology for the deoxidation and out-of-furnace treatment of low-silicon steel

Abstract: 1110 1 Nonmetallic inclusions cause many defects in ready rolled products. In particular, surface defects identified as slivers, i.e., lines along the rolling direc tion, belong to them. Such defects are mainly typical of rolled sheets made of low carbon carbon killed (LCAK) steel. Figure 1 shows a characteristic surface defect (scab) of a 1.5 mm thick roll sheet made of low silicon low carbon steel.The authors of [1] believe that the damage of rolled products by linear surface defects correlates with the tota… Show more

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“…The effects of deoxidation sequence on inclusion size and morphology, in particular, have been the subject of discussion for long time and significant discussion still prevail. Some authors propose that the deoxidants should be introduced starting with the lower deoxidation power silicon, followed by aluminum, while others recommend the complete addition of aluminum directly to the fully oxidized bath, as tapped [4][5][6][7]. The objective of this work is to compare quality and cost indicators for the two practices and to understand the processes occurring in each deoxidation practices using thermodynamics.…”
Section: Introductionmentioning
confidence: 99%
“…The effects of deoxidation sequence on inclusion size and morphology, in particular, have been the subject of discussion for long time and significant discussion still prevail. Some authors propose that the deoxidants should be introduced starting with the lower deoxidation power silicon, followed by aluminum, while others recommend the complete addition of aluminum directly to the fully oxidized bath, as tapped [4][5][6][7]. The objective of this work is to compare quality and cost indicators for the two practices and to understand the processes occurring in each deoxidation practices using thermodynamics.…”
Section: Introductionmentioning
confidence: 99%
“…Steel deoxidation process is done through the following methods: precipitation (by using ferroalloys), diffusion (by using reducing or synthetic slag) -in the furnace [5] or in the secondary treatment aggregate [6], [7], and using a vacuum [8]. By using vacuum steel deoxidation, can be obtained grade steels with high purity.…”
mentioning
confidence: 99%