ISSN 2594-5300
46º Seminário de Aciaria - Internacional — vol. 46, num.46 (2015)
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Resumo
Pin holes as a surface defect, and blow holes as an inner defect, occur in billet / bloom / beam blank casting, particularly for Si-Mn killed steel cast with metering nozzle and oil lubrication. If they are present in abundance or have a large size, they may originate defects in the rolled products. Their characteristics, factors behind their formation, as well as usual processing conditions that promote their occurrence are discussed. Finally, the evolution of these defects during reheating and rolling is analyzed, with industrial examples.
Palavras-chave
Billet casting, Metering nozzle, Pin-hole, Blow-hole, Oil lubrication, Nitrogen, Hydrogen, Oxygen
Oxygen
Como citar
Madias, Jorge;
Moreno, Alberto;
Genzano, Cristian.
BILLET DEFECTS: PIN-HOLE AND BLOW-HOLE FORMATION, PREVENTION AND EVOLUTION
,
p. 154-164.
In: 46º Seminário de Aciaria - Internacional,
Rio de Janeiro,
2015.
ISSN: 2594-5300
, DOI 10.5151/1982-9345-26292
