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DEVELOPMENT OF MICRO-ALLOYED FIRE RESISTANT STEEL,
DEVELOPMENT OF MICRO-ALLOYED FIRE RESISTANT STEEL,
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机译:微合金化耐火钢的发展
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摘要
The present invention deals with the development of a leaner chemistry micro-alloyed steels with fire resistance property upto 600�C for structural tube application having a lean chemical composition (mass %) consisting of: C: 0.10 max Mn: 0.50 max; Cr + Mo + V + N= 0.50 max; Si: 0.15 (max); Al: 0.15 (max); CE 0.30 balance being iron with impurities and characterized in that the microstructure of the micro-alloyed steel exhibits formation of (Cr, Mo, V) carbides, VN and complex carbo-nitrides (Cr, Mo, V) (C, N), which increases the resistance of thermal softening and improves fire resistance property in the form of higher yield strength at elevated temperature. .[IN-KOL-2012-00196A]
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机译:本发明致力于开发一种耐化学性高达600℃的,用于结构管的,具有稀薄化学成分(质量%)的稀薄化学微合金钢,其化学成分(质量%)包括:C:最大0.10; Mn:最大0.50; Cr + Mo + V + N = 0.50 max; Si:0.15(最大); Si:0.15(最大)。 Al:0.15(最大); Al:0.15(最大)。 CE <0.30天平为含杂质的铁,其特征在于微合金钢的微观结构表现出形成(Cr,Mo,V)碳化物,VN和复杂的碳氮化物(Cr,Mo,V)(C,N) ,它在高温下具有较高的屈服强度,从而提高了抗热软化性并改善了耐火性能。 。[IN-KOL-2012-00196A]
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