Manufacturing processes
Railways rails - Metallurgical aspects
Article REF: M3070 V1
Manufacturing processes
Railways rails - Metallurgical aspects

Author : Raymond DEROCHE

Publication date: June 10, 2013 | Lire en français

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2. Manufacturing processes

2.1 Liquid chain

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2.1.1 Processes from 1985 and earlier

The classic chain consisted of :

  • blast furnace ironmaking with hematite pig iron (low phosphorus);

  • oxygen converter refining ;

  • no in-pocket treatment apart from deoxidation with aluminum; IRSID then introduced bubbling with argon through a porous plug underneath the pocket to better settle aluminates (figure

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